{"id":1790,"date":"2026-11-11T19:33:34","date_gmt":"2026-11-11T19:33:34","guid":{"rendered":"https:\/\/4atmos.com\/?page_id=1790"},"modified":"2026-11-14T16:12:12","modified_gmt":"2026-11-14T16:12:12","slug":"reliability-hub","status":"publish","type":"page","link":"https:\/\/4atmos.com\/el\/reliability-hub\/","title":{"rendered":"\u03a4\u03bf Hub \u03c4\u03b7\u03c2 \u0391\u03be\u03b9\u03cc\u03c0\u03b9\u03c3\u03c4\u03b7\u03c2 \u0394\u03b9\u03b1\u03b4\u03b9\u03ba\u03c4\u03c5\u03b1\u03ba\u03ae\u03c2 \u03a5\u03c0\u03b7\u03c1\u03b5\u03c3\u03af\u03b1\u03c2"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1790\" class=\"elementor elementor-1790\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7c2ffdf e-con e-atomic-element e-flexbox-base e-default-div e-bf76e57 \" data-id=\"7c2ffdf\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"7c2ffdf\">\n    \t\t<div class=\"elementor-element elementor-element-3f9771a elementor-widget elementor-widget-html\" data-id=\"3f9771a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- 4Atmos Custom Navigation Snippet -->\r\n<nav class=\"fa-custom-nav\" aria-label=\"4Atmos primary navigation\">\r\n    <div class=\"fa-custom-nav-inner\">\r\n        <a class=\"fa-nav-link\" href=\"https:\/\/4atmos.com\/\">Home<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/why-4atmos\/\">Why 4Atmos?<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/real-world-success\/\">Real World Success<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/4atmos-insights\/\">4Atmos Insights<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/Reliability-Hub\/\">RCA\/RCM Support<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/roi\/\">ROI<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/federal-compliance\/\">Federal Compliance<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/about-us\/\">About Us<\/a>\r\n        <a class=\"fa-nav-link\" href=\"\/contact-us\/\">Contact Us<\/a>\r\n    <\/div>\r\n<\/nav>\r\n\r\n<style>\r\n    .fa-custom-nav {\r\n        width: 100%;\r\n        background: radial-gradient(circle at 50% 0%, rgba(38, 130, 190, 0.12), transparent 42%), linear-gradient(180deg, rgba(6, 13, 18, 0.98), rgba(4, 9, 13, 0.98));\r\n        border: 1px solid rgba(146, 179, 206, 0.22);\r\n        border-radius: 0;\r\n        padding: 28px 18px;\r\n        box-sizing: border-box;\r\n        font-family: inherit;\r\n    }\r\n\r\n    .fa-custom-nav-inner {\r\n        max-width: 1120px;\r\n        margin: 0 auto;\r\n        display: flex;\r\n        justify-content: center;\r\n        align-items: center;\r\n        gap: 28px;\r\n        flex-wrap: wrap;\r\n    }\r\n\r\n    .fa-custom-nav .fa-nav-link {\r\n        color: rgba(238, 246, 252, 0.92) !important;\r\n        text-decoration: none !important;\r\n        font-size: 15px;\r\n        font-weight: 650;\r\n        letter-spacing: 0.02em;\r\n        line-height: 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ui-sans-serif, system-ui, -apple-system, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n  }\n\n  .fa-4rds-intro *,\n  .fa-4rds-intro *::before,\n  .fa-4rds-intro *::after {\n    box-sizing: border-box;\n  }\n\n  .fa-4rds-intro-wrap {\n    max-width: 1440px;\n    margin: 0 auto;\n  }\n\n  .fa-4rds-intro-panel {\n    position: relative;\n    overflow: hidden;\n    border: 1px solid rgba(245,166,35,.22);\n    border-radius: 30px;\n    background:\n      linear-gradient(135deg, rgba(255,255,255,.055), rgba(255,255,255,.02)),\n      linear-gradient(180deg, rgba(245,166,35,.08), rgba(255,255,255,.01) 42%, rgba(255,255,255,.01));\n    box-shadow: 0 22px 64px rgba(0,0,0,.38);\n    padding: 34px;\n  }\n\n  .fa-4rds-intro-panel::before {\n    content: \"\";\n    position: absolute;\n    inset: 0;\n    pointer-events: none;\n    background-image:\n      linear-gradient(30deg, rgba(255,255,255,.035) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,.035) 87.5%, 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1.65;\n    }\n\n    .fa-4rds-disclaimer {\n      margin-top: 12px;\n      padding: 13px 14px;\n      font-size: 12px;\n    }\n  }\n<\/style>\n\n<section class=\"fa-4rds-intro\">\n  <div class=\"fa-4rds-intro-wrap\">\n\n    <div class=\"fa-4rds-intro-panel\">\n      <div class=\"fa-4rds-intro-content\">\n\n        <div class=\"fa-4rds-intro-eyebrow\">\n          4RDS | Purpose\n        <\/div>\n\n        <h2>\n          Understand the equipment.\n          Identify the problem.\n          <span>Know where to look.<\/span>\n        <\/h2>\n\n        <p>\n          Effective troubleshooting starts with understanding what\n          you're working on, recognizing what has changed, and\n          knowing where to begin investigating. The 4Atmos\n          Reliability Data Standard (4RDS) Field Reference brings\n          equipment classifications, technical definitions, and\n          practical troubleshooting guidance together in one\n          accessible resource.\n\n          Built around the independently developed 4RDS\n          classification framework, this interactive guide helps\n          technicians, engineers, and maintenance professionals\n          identify equipment, explore common operating symptoms,\n          and understand what systems, components, measurements,\n          and maintenance records may deserve closer attention.\n\n          Rather than jumping to a diagnosis, the guide connects\n          what you're experiencing with relevant inspection points,\n          possible explanations, and the evidence needed to make\n          informed decisions. Covering marine, rail, and shared\n          industrial equipment, it provides a consistent starting\n          point for investigating unusual conditions, documenting\n          findings, and determining appropriate next steps.\n\n          Whether you're troubleshooting in the field, reviewing\n          equipment history, or planning maintenance, 4RDS is\n          designed to make technical information easier to\n          understand, apply, and communicate.\n        <\/p>\n\n      <\/div>\n    <\/div>\n\n    <div class=\"fa-4rds-disclaimer\">\n      <strong>Technical Disclaimer:<\/strong>\n      The 4RDS Field Reference is an educational and preliminary\n      troubleshooting resource developed by 4Atmos. Equipment\n      classifications and guided checks may be revised as the\n      4RDS framework develops. This tool does not establish a\n      confirmed failure, determine root cause, or authorize\n      maintenance work. It is not a substitute for manufacturer\n      instructions, qualified engineering assessment, applicable\n      safety procedures, site-specific operating requirements,\n      or regulatory obligations. All findings and potential\n      actions must be evaluated against the actual equipment,\n      operating conditions, inspection evidence, maintenance\n      history, and applicable requirements before implementation.\n    <\/div>\n\n  <\/div>\n<\/section>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-918df5e e-con e-atomic-element e-flexbox-base e-default-div e-5bfffc2 \" data-id=\"918df5e\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"918df5e\">\n    \t\t<div class=\"elementor-element elementor-element-3382c0c elementor-widget elementor-widget-html\" data-id=\"3382c0c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"UTF-8\"><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"><meta name=\"theme-color\" content=\"#061018\"><title>4RDS Field Reference v0.2 | 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.r-intro{display:none}}\n<\/style>\n<section id=\"fa-4rds-guide\" aria-label=\"4RDS Field Reference\">\n  <div class=\"r-wrap\">\n    <header class=\"r-hero\">\n      <div>\n        <p class=\"r-kicker\">4Atmos \/ Reliability Reference<\/p>\n        <h1>Know what to check.<br><span>Know where to look.<\/span><\/h1>\n        <p class=\"r-intro\">Choose an industry, equipment type, and observed symptom. Explore where to look, what to record, and when to involve qualified maintenance personnel\u2014without mistaking a symptom for a confirmed failure.<\/p>\n      <\/div>\n      <aside class=\"r-hero-meta\" aria-label=\"Reference coverage\">\n        <span class=\"r-tag\">4RDS Field Guide \/ Draft<\/span>\n        <div class=\"r-metrics\">\n          <div><b>13<\/b><span>Industry selections<\/span><\/div>\n          <div><b>73<\/b><span>Authored guide paths<\/span><\/div>\n          <div><b>66<\/b><span>Candidate equipment classes<\/span><\/div>\n          <div><b>59<\/b><span>Candidate functional roles<\/span><\/div>\n        <\/div>\n        <small>Original 4Atmos research drafts. Industry coverage is illustrative; classification and troubleshooting paths require technical review.<\/small>\n      <\/aside>\n    <\/header>\n    <div class=\"r-topnote\" role=\"note\"><span class=\"r-note-icon\">!<\/span><span><strong>Reference guide, not a repair authorization.<\/strong> Start with observable facts. Follow your operating rules, manufacturer procedures and applicable energy-isolation requirements. Never bypass alarms or safety devices to complete a check.<\/span><\/div>\n    <div class=\"r-nav\" role=\"tablist\" aria-label=\"Reference modes\">\n      <button type=\"button\" class=\"r-tab\" role=\"tab\" aria-selected=\"true\" data-action=\"tab\" data-value=\"guide\">Guided Check<\/button>\n      <button type=\"button\" class=\"r-tab\" role=\"tab\" aria-selected=\"false\" data-action=\"tab\" data-value=\"dictionary\">Equipment Dictionary<\/button>\n    <\/div>\n    <div id=\"r-guided\" role=\"tabpanel\">\n      <div class=\"r-nav-caption\"><div><h2>Start with what you can observe.<\/h2><p>Choose an industry, equipment type and symptom\u2014or describe what you're seeing to find a matching guide.<\/p><\/div><span class=\"r-tag\">Observation \u2260 Diagnosis<\/span><\/div>\n      <div class=\"r-industry-picker\" aria-label=\"Industry selector\"><div class=\"r-industry-head\"><strong>01 \/ Choose your industry<\/strong><small>13 sectors \u00b7 shared equipment + sector-specific examples<\/small><\/div><div class=\"r-domain\" data-out=\"domains\" role=\"group\" aria-label=\"Select industry\"><\/div><div class=\"r-industry-note\" id=\"r-industry-note\" role=\"status\"><\/div><\/div>\n      <div class=\"r-guide-layout\">\n        <aside class=\"r-surface r-sidebar\">\n          <div class=\"r-field\"><label class=\"r-label\" for=\"r-guide-class\">02 \/ Equipment<\/label><select class=\"r-select\" id=\"r-guide-class\" data-action=\"class-select\"><\/select><\/div>\n          <div class=\"r-field\"><label class=\"r-label\" for=\"r-guide-symptom\">03 \/ What is happening?<\/label><select class=\"r-select\" id=\"r-guide-symptom\" data-action=\"symptom-select\"><\/select><p class=\"r-fine\" style=\"margin-top:8px\">Only equipment with relevant guide paths appears here. The full 66-class candidate registry is available in the dictionary.<\/p><\/div>\n          <div class=\"r-field r-symptom-search\"><label class=\"r-label\" for=\"r-guide-query\">Or search by what you notice<\/label><input class=\"r-input\" id=\"r-guide-query\" autocomplete=\"off\" type=\"search\" placeholder=\"e.g. oil has iron, hot bearing, low air...\"\/><div class=\"r-matches\" id=\"r-search-matches\" aria-live=\"polite\"><\/div><\/div>\n          <div class=\"r-picks\"><p class=\"r-picks-head\">Try an example<\/p><div id=\"r-quick-picks\"><\/div><\/div>\n        <\/aside>\n        <article class=\"r-surface r-result\" id=\"r-result\" aria-live=\"polite\"><\/article>\n      <\/div>\n    <\/div>\n    <div id=\"r-dictionary\" role=\"tabpanel\" hidden>\n      <div class=\"r-nav-caption\"><div><h2>Equipment & functional roles.<\/h2><p>Original candidate definitions from the 4RDS research catalog. Equipment identifies <em>what something is<\/em>; functional roles describe <em>what it does<\/em>.<\/p><\/div><span class=\"r-tag\">Controlled vocabulary \/ Candidate<\/span><\/div>\n      <div class=\"r-dict-bar\">\n        <div><label class=\"r-label\" for=\"r-dict-query\">Search dictionary<\/label><input class=\"r-input\" id=\"r-dict-query\" type=\"search\" placeholder=\"e.g. alternator, steering, traction, compressor\"><\/div>\n        <div class=\"r-dict-toggle\" id=\"r-dict-modes\"><button type=\"button\" data-action=\"dict-mode\" data-value=\"classes\" aria-pressed=\"true\">Equipment (66)<\/button><button type=\"button\" data-action=\"dict-mode\" data-value=\"roles\" aria-pressed=\"false\">Roles (59)<\/button><\/div>\n        <div><label class=\"r-label\" for=\"r-dict-domain\">Industry applicability (draft)<\/label><select class=\"r-select\" id=\"r-dict-domain\"><\/select><\/div>\n      <\/div>\n      <p class=\"r-dict-count\" id=\"r-dict-count\"><\/p><div class=\"r-catalog\" id=\"r-catalog\"><\/div>\n    <\/div>\n    <footer class=\"r-foot\"><span>4RDS v0.2 \/ Independent 4Atmos research draft. No ISO code pack or licensed taxonomy included.<\/span><span>13 draft industry mappings. General first checks only; no thresholds, failure predictions or automatic diagnoses.<\/span><\/footer>\n  <\/div>\n<\/section>\n<script>\n(function(){'use strict';\nconst root=document.getElementById('fa-4rds-guide');if(!root||root.dataset.ready==='yes')return;root.dataset.ready='yes';\nconst DATA={\"title\":\"4RDS Field Reference \u2014 Multi-Industry Equipment & Guided First Checks\",\"version\":\"0.2.0-research\",\"status\":\"research_draft\",\"source_class_catalog\":\"4RDS-01 Session 003 v0.2 (66 classes, unchanged)\",\"source_role_catalog\":\"4RDS-01 Session 003 v0.1 (59 roles, unchanged)\",\"independent_authoring_note\":\"All additional first-check scenarios newly authored for this prototype. Not ISO, OEM repair instructions, or a validated diagnosis. Safety-specific checks require qualified personnel.\",\"classes\":[{\"class_id\":\"4rds.eq.platform.marine.towboat\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Inland towboat\",\"applies_to\":\"marine\",\"definition\":\"Self-propelled inland marine host whose normal equipment configuration is intended to move barges by pushing or other tow-handling operations.\",\"inclusion_criteria\":\"Register the entire powered vessel as a host; include a barge-pushing boat even when its assigned barges change.\",\"exclusion_criteria\":\"Do not use for an unpowered barge or for a yard-support craft whose primary assignment is short-range worksite movement.\",\"positive_example\":\"A powered river boat configured to push a barge flotilla.\",\"negative_example\":\"An unpowered hopper barge that a boat pushes.\",\"required_facts\":\"purpose_barge_movement\",\"contrary_facts\":\"unpowered_cargo_barge\",\"candidate_role_ids\":\"4rds.role.marine.host_barge_movement\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.marine.workboat\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Marine workboat\",\"applies_to\":\"marine\",\"definition\":\"Self-propelled marine host primarily arranged to support localized construction, maintenance, dredging, inspection, or similar worksite tasks.\",\"inclusion_criteria\":\"Include small powered vessels assigned to local support and equipment-handling missions.\",\"exclusion_criteria\":\"Exclude a regular line-haul towboat or a stationary floating platform without propulsion.\",\"positive_example\":\"A powered worksite support craft moving equipment around a dredging site.\",\"negative_example\":\"A line-haul towboat operating between ports.\",\"required_facts\":\"purpose_worksite_support\",\"contrary_facts\":\"purpose_linehaul_barge_movement\",\"candidate_role_ids\":\"4rds.role.marine.host_worksite_support\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.marine.other_vessel\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Other marine vessel\",\"applies_to\":\"marine\",\"definition\":\"Physical marine host not covered by a currently more specific 4RDS vessel class and identified by its documented marine operating function.\",\"inclusion_criteria\":\"Use as a controlled fallback when an existing vessel is real but the available catalog lacks an appropriate class.\",\"exclusion_criteria\":\"Do not assign when evidence supports a towboat or workboat class; do not use as a permanent substitute for classification review.\",\"positive_example\":\"A surveyed service vessel outside current catalog specializations.\",\"negative_example\":\"A barge-pushing vessel with documented towing service.\",\"required_facts\":\"vessel_other_mission\",\"contrary_facts\":\"vessel_defined_towboat\",\"candidate_role_ids\":\"4rds.role.marine.host_worksite_support\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.rail.diesel_electric_locomotive\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Diesel-electric locomotive\",\"applies_to\":\"rail\",\"definition\":\"Self-propelled rail vehicle using an onboard combustion-engine-driven electrical supply to furnish traction power through electric drive equipment.\",\"inclusion_criteria\":\"Include units whose primary propulsion chain is diesel engine to generator or alternator to traction motors.\",\"exclusion_criteria\":\"Exclude a direct-electric locomotive drawing propulsion electricity from an external supply without a diesel prime mover.\",\"positive_example\":\"A line locomotive with diesel engine, alternator, traction converter, and traction motors.\",\"negative_example\":\"A catenary-powered locomotive with no onboard traction diesel.\",\"required_facts\":\"diesel_generated_electric_traction\",\"contrary_facts\":\"external_electric_traction_only\",\"candidate_role_ids\":\"4rds.role.rail.host_rail_traction\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.rail.electric_locomotive\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Electric locomotive\",\"applies_to\":\"rail\",\"definition\":\"Self-propelled rail vehicle primarily supplied with propulsion energy from an external electric distribution system.\",\"inclusion_criteria\":\"Include locomotives designed to operate from overhead conductors or a conductor rail.\",\"exclusion_criteria\":\"Exclude diesel-electric locomotives that generate their own normal traction electricity.\",\"positive_example\":\"A locomotive drawing power from overhead wires for traction.\",\"negative_example\":\"A locomotive powered primarily by a diesel engine and alternator.\",\"required_facts\":\"external_electric_supply\",\"contrary_facts\":\"diesel_generated_traction_supply\",\"candidate_role_ids\":\"4rds.role.rail.host_rail_traction\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.rail.passenger_car\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Passenger rail car\",\"applies_to\":\"rail\",\"definition\":\"Rail vehicle primarily configured to carry passengers, including powered or unpowered cars when the car-level subject is the physical object.\",\"inclusion_criteria\":\"Include coaches and powered passenger cars; capture motive power configuration as attributes or related equipment.\",\"exclusion_criteria\":\"Exclude freight-only cars, separate locomotives, and maintenance vehicles whose passenger accommodations are incidental.\",\"positive_example\":\"A passenger coach with seating and climate control.\",\"negative_example\":\"A railcar built principally for bulk commodity transport.\",\"required_facts\":\"primary_passenger_carriage\",\"contrary_facts\":\"primary_freight_carriage\",\"candidate_role_ids\":\"4rds.role.rail.host_passenger_service\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.rail.freight_car\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Freight rail car\",\"applies_to\":\"rail\",\"definition\":\"Rail vehicle primarily configured to move goods rather than passengers or provide locomotive traction.\",\"inclusion_criteria\":\"Include tank, flat, box, and hopper car hosts under the common physical class pending approved subtypes.\",\"exclusion_criteria\":\"Exclude passenger accommodation cars and powered locomotives.\",\"positive_example\":\"A covered hopper car used to transport grain.\",\"negative_example\":\"A commuter passenger coach.\",\"required_facts\":\"primary_goods_carriage\",\"contrary_facts\":\"primary_passenger_carriage\",\"candidate_role_ids\":\"4rds.role.rail.host_freight_service\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.platform.rail.maintenance_vehicle\",\"family_id\":\"4rds.eq.platform\",\"label\":\"Rail maintenance vehicle\",\"applies_to\":\"rail\",\"definition\":\"Rail-capable vehicle with its principal purpose of maintaining, inspecting, constructing, or repairing railway infrastructure.\",\"inclusion_criteria\":\"Include self-propelled track inspection and maintenance-of-way vehicles with distinguishable host identity.\",\"exclusion_criteria\":\"Exclude ordinary locomotives temporarily transporting maintenance crews.\",\"positive_example\":\"A rail-mounted track inspection vehicle.\",\"negative_example\":\"A locomotive hauling a crew train as a temporary assignment.\",\"required_facts\":\"purpose_rail_infrastructure_work\",\"contrary_facts\":\"purpose_train_haulage\",\"candidate_role_ids\":\"4rds.role.rail.host_track_maintenance\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"family_id\":\"4rds.eq.power_source\",\"label\":\"Diesel combustion engine\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Individual compression-ignition combustion engine that converts fuel energy into shaft power.\",\"inclusion_criteria\":\"Include a separately trackable engine even when installed within a larger generator-set assembly.\",\"exclusion_criteria\":\"Exclude the whole generator set, a gaseous spark-ignition engine, and stand-alone alternators.\",\"positive_example\":\"A serial-numbered diesel engine installed as a vessel main engine.\",\"negative_example\":\"An engine-and-alternator generator set recorded as one complete skid.\",\"required_facts\":\"compression_ignition_engine_unit\",\"contrary_facts\":\"complete_engine_generator_package\",\"candidate_role_ids\":\"4rds.role.marine.auxiliary_electric_prime_mover; 4rds.role.marine.propulsion_prime_mover; 4rds.role.rail.diesel_prime_mover; 4rds.role.shared.general_rotating_driver\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_source.gas_engine\",\"family_id\":\"4rds.eq.power_source\",\"label\":\"Gas-fueled combustion engine\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Individual fuel-gas combustion engine producing mechanical shaft power, with its own identifiable engine boundary.\",\"inclusion_criteria\":\"Include dedicated gaseous-fuel prime movers regardless of whether they drive pumps or generators.\",\"exclusion_criteria\":\"Exclude gas turbines, diesel engines, and complete multi-unit generator packages.\",\"positive_example\":\"A spark-ignited natural-gas engine driving a compressor.\",\"negative_example\":\"A continuous-flow combustion turbine driving a generator.\",\"required_facts\":\"reciprocating_gas_engine\",\"contrary_facts\":\"continuous_flow_turbine\",\"candidate_role_ids\":\"4rds.role.marine.auxiliary_electric_prime_mover; 4rds.role.marine.propulsion_prime_mover; 4rds.role.shared.general_rotating_driver\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_source.electric_motor\",\"family_id\":\"4rds.eq.power_source\",\"label\":\"Rotating electric motor\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Identifiable machine converting electrical input to rotating shaft power, without a defining rail-traction design specialization.\",\"inclusion_criteria\":\"Include pumps' and fans' motors, and other rotating motors not classified into a specialized motor type.\",\"exclusion_criteria\":\"Exclude a rail traction motor specifically manufactured as a rail wheel-drive unit and exclude complete motor-pump skids.\",\"positive_example\":\"A pump-driving AC induction motor with its own serial number.\",\"negative_example\":\"A locomotive traction motor designed for a wheelset drive.\",\"required_facts\":\"general_rotating_motor\",\"contrary_facts\":\"rail_wheel_traction_motor\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_prime_mover; 4rds.role.shared.general_rotating_driver\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_source.gas_turbine\",\"family_id\":\"4rds.eq.power_source\",\"label\":\"Gas turbine\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Rotating prime mover producing shaft power from expansion of high-temperature combustion gases through turbine stages.\",\"inclusion_criteria\":\"Include gas turbines driving generators, pumps, or mechanical equipment.\",\"exclusion_criteria\":\"Exclude reciprocating gas engines, steam turbines, and an entire gas-turbine power plant when its subcomponents are individually tracked.\",\"positive_example\":\"A combustion gas turbine coupled to a compressor.\",\"negative_example\":\"A gas-fired reciprocating engine.\",\"required_facts\":\"gas_expansion_turbomachinery\",\"contrary_facts\":\"reciprocating_piston_engine\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_prime_mover; 4rds.role.shared.general_rotating_driver\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_source.battery_pack\",\"family_id\":\"4rds.eq.power_source\",\"label\":\"Traction or auxiliary battery pack\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated, physically bounded electrochemical storage assembly designed to supply electrical energy to connected equipment.\",\"inclusion_criteria\":\"Include modular battery packs with identifiable enclosure, monitoring, and electrical interfaces.\",\"exclusion_criteria\":\"Exclude a stand-alone auxiliary power converter and individual cells when the tracked object is the pack.\",\"positive_example\":\"A rail auxiliary lithium battery pack with pack-level identity.\",\"negative_example\":\"An inverter converting DC to AC without storing energy.\",\"required_facts\":\"electrochemical_pack_storage\",\"contrary_facts\":\"power_conversion_no_storage\",\"candidate_role_ids\":\"4rds.role.rail.auxiliary_electrical_supply\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_source.fuel_cell_module\",\"family_id\":\"4rds.eq.power_source\",\"label\":\"Fuel-cell power module\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Identifiable module generating electricity electrochemically from supplied reactants during operation.\",\"inclusion_criteria\":\"Include packaged fuel-cell stacks or modules at the chosen replaceable-unit boundary.\",\"exclusion_criteria\":\"Exclude a rechargeable battery pack and an engine-driven generator.\",\"positive_example\":\"A hydrogen fuel-cell module supplying DC bus power.\",\"negative_example\":\"A rechargeable battery assembly storing previously supplied electrical energy.\",\"required_facts\":\"fuel_reactant_electrochemical_generation\",\"contrary_facts\":\"rechargeable_electrochemical_storage\",\"candidate_role_ids\":\"4rds.role.shared.fuel_cell_power_supply\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.reduction_gear\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Speed-reducing gearbox\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Gearbox assembly whose designed power-transmission function is to lower output rotational speed relative to its input at an operating gear ratio.\",\"inclusion_criteria\":\"Include a marine reduction gear independently tracked from the propulsion engine.\",\"exclusion_criteria\":\"Exclude a rail axle-integrated traction gear drive when specialized as such, and exclude a reversing-only mechanism with no reduction duty.\",\"positive_example\":\"A propulsion gearbox reducing engine output speed for a shaft.\",\"negative_example\":\"A locomotive axle traction gear unit assigned the rail-specific class.\",\"required_facts\":\"gear_reduces_rotational_speed\",\"contrary_facts\":\"integrated_rail_axle_drive\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_speed_adaptation\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.reversing_gear\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Reversing gearbox\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Mechanically identifiable gear assembly principally arranged to select opposite rotation direction or drive direction between input and output.\",\"inclusion_criteria\":\"Include a distinct mechanical reversing box independently maintained and replaced.\",\"exclusion_criteria\":\"Exclude an electronic reversing control circuit or a simple fixed reduction gear with no selectable reversal.\",\"positive_example\":\"A marine reversing gearbox used to select ahead or astern drive.\",\"negative_example\":\"A fixed-ratio reduction gearbox without reversing control.\",\"required_facts\":\"mechanical_direction_reversal\",\"contrary_facts\":\"fixed_ratio_no_reverse\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_speed_adaptation\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.driveshaft\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Power-transmission shaft\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Elongated rotating member or shaft assembly transmitting torque between physically separated drive elements.\",\"inclusion_criteria\":\"Include separately replaceable marine intermediate shaft or drive shaft units.\",\"exclusion_criteria\":\"Exclude a stationary structural rod and a coupling whose body does not form the tracked shaft span.\",\"positive_example\":\"A marine intermediate propeller-shaft section.\",\"negative_example\":\"A flexible flange coupling between two shafts.\",\"required_facts\":\"elongated_torque_transmission_member\",\"contrary_facts\":\"shaft_joint_only\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_shaft_transfer; 4rds.role.shared.mechanical_torque_interface\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.coupling\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Mechanical coupling\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Connective unit that transfers rotational torque between shaft interfaces while accommodating a defined degree of alignment or joint condition.\",\"inclusion_criteria\":\"Include flexible and rigid shaft-to-shaft couplings with their own tracked component boundary.\",\"exclusion_criteria\":\"Exclude a clutch deliberately used to engage\/disengage torque and exclude an extended driveshaft span.\",\"positive_example\":\"A flexible coupling between engine and reduction gear.\",\"negative_example\":\"A controllable clutch that opens the drive under command.\",\"required_facts\":\"continuous_shaft_interface_coupling\",\"contrary_facts\":\"switchable_torque_disconnection\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_shaft_transfer; 4rds.role.shared.mechanical_torque_interface\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.clutch\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Engagement clutch\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Engageable mechanism that intentionally connects or disconnects torque transfer between two rotating powertrain members.\",\"inclusion_criteria\":\"Include mechanical or fluid-actuated clutches classified by the physical mechanism, not operator control panel.\",\"exclusion_criteria\":\"Exclude a permanently connected coupling and a directional valve.\",\"positive_example\":\"A pneumatically operated drive engagement clutch.\",\"negative_example\":\"A rigid flange coupling with no engagement state.\",\"required_facts\":\"intentional_torque_engagement\",\"contrary_facts\":\"non_switchable_shaft_join\",\"candidate_role_ids\":\"4rds.role.marine.propulsion_shaft_transfer; 4rds.role.shared.mechanical_torque_interface\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.axle_gear\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Axle gearing\",\"applies_to\":\"rail; industrial\",\"definition\":\"Gear unit transferring torque to or from an axle assembly without requiring a particular rail traction-drive design identity.\",\"inclusion_criteria\":\"Include general axle gear arrangements not covered by specialized rail traction gear-drive class.\",\"exclusion_criteria\":\"Exclude a locomotive-specific traction gear-drive assembly and a plain wheelset without gearing.\",\"positive_example\":\"A separately tracked non-rail axle differential gear assembly.\",\"negative_example\":\"An integral locomotive traction pinion-and-bull gear unit.\",\"required_facts\":\"general_axle_gear_unit\",\"contrary_facts\":\"locomotive_traction_gearing\",\"candidate_role_ids\":\"4rds.role.rail.traction_gearing\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.power_transfer.bearing_assembly\",\"family_id\":\"4rds.eq.power_transfer\",\"label\":\"Bearing assembly\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Bounded, serviceable unit whose principal purpose is supporting relative rotation or oscillation between a shaft and its surrounding support.\",\"inclusion_criteria\":\"Include a replaceable bearing cartridge, pillow-block assembly, or journal housing assembly.\",\"exclusion_criteria\":\"Exclude an entire wheelset or a rolling element tracked only as a non-serialized consumable part.\",\"positive_example\":\"A propulsion shaft bearing cartridge.\",\"negative_example\":\"A complete rail wheelset with axle and wheels.\",\"required_facts\":\"separately_serviceable_rotary_support\",\"contrary_facts\":\"complete_wheel_axle_assembly\",\"candidate_role_ids\":\"4rds.role.shared.rotating_support\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.marine_motion.propeller\",\"family_id\":\"4rds.eq.marine_motion\",\"label\":\"Propeller\",\"applies_to\":\"marine\",\"definition\":\"Marine rotating blade assembly converting shaft torque to thrust in water at the component boundary of the propeller itself.\",\"inclusion_criteria\":\"Include separately identified propellers inside or outside larger propulsion devices.\",\"exclusion_criteria\":\"Exclude the entire azimuth thruster assembly and the drive shaft that turns the blades.\",\"positive_example\":\"A replaceable fixed-pitch propeller mounted on a propulsion shaft.\",\"negative_example\":\"A complete packaged azimuth thruster with motor and steering mechanism.\",\"required_facts\":\"standalone_marine_blade_rotor\",\"contrary_facts\":\"complete_steerable_thruster_package\",\"candidate_role_ids\":\"4rds.role.marine.primary_propulsor\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.marine_motion.thruster\",\"family_id\":\"4rds.eq.marine_motion\",\"label\":\"Thruster\",\"applies_to\":\"marine\",\"definition\":\"Integrated marine thrust-producing device that packages a propulsor with equipment dedicated to applying thrust in a specific marine maneuvering or propulsion installation.\",\"inclusion_criteria\":\"Include bow tunnel thrusters and azimuthing propulsion units at the whole-assembly boundary.\",\"exclusion_criteria\":\"Exclude a propeller blade assembly tracked separately within the thruster.\",\"positive_example\":\"A complete bow thruster including housing and thrust rotor.\",\"negative_example\":\"A spare propeller alone on a parts pallet.\",\"required_facts\":\"complete_marine_thruster_assembly\",\"contrary_facts\":\"individual_propeller_only\",\"candidate_role_ids\":\"4rds.role.marine.maneuvering_thrust; 4rds.role.marine.primary_propulsor\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.marine_motion.rudder\",\"family_id\":\"4rds.eq.marine_motion\",\"label\":\"Rudder\",\"applies_to\":\"marine\",\"definition\":\"Hydrodynamic directional surface or separately tracked rudder assembly used to change vessel heading through water flow.\",\"inclusion_criteria\":\"Include a rudder blade assembly and its directly integrated stock where the chosen boundary is the rudder.\",\"exclusion_criteria\":\"Exclude the hydraulic actuator that moves it and a propulsion thruster with swiveling thrust.\",\"positive_example\":\"A physical rudder assembly aft of a vessel's propeller.\",\"negative_example\":\"A hydraulic cylinder actuating a rudder tiller.\",\"required_facts\":\"hydrodynamic_steering_surface\",\"contrary_facts\":\"hydraulic_steering_cylinder\",\"candidate_role_ids\":\"4rds.role.marine.heading_control_surface\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.marine_motion.steering_actuator\",\"family_id\":\"4rds.eq.marine_motion\",\"label\":\"Steering actuator\",\"applies_to\":\"marine\",\"definition\":\"Marine-designated power mechanism producing the mechanical motion commanded to steer a rudder or comparable vessel directional element.\",\"inclusion_criteria\":\"Include identified hydraulic steering cylinders and electric steering actuators under marine steering duty.\",\"exclusion_criteria\":\"Exclude a general instrument-positioning actuator not engineered as the vessel steering unit.\",\"positive_example\":\"A port steering ram actuating a rudder.\",\"negative_example\":\"An actuator adjusting an engine air damper position.\",\"required_facts\":\"marine_rudder_steering_motion\",\"contrary_facts\":\"generic_damper_positioner\",\"candidate_role_ids\":\"4rds.role.marine.steering_motion_source\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.marine_motion.shaft_seal\",\"family_id\":\"4rds.eq.marine_motion\",\"label\":\"Shaft sealing assembly\",\"applies_to\":\"marine\",\"definition\":\"Identifiable assembly limiting fluid passage along a rotating marine propulsion shaft where it penetrates a fluid or structural boundary.\",\"inclusion_criteria\":\"Include replaceable stern-tube sealing assemblies and similar shaft-penetration seals.\",\"exclusion_criteria\":\"Exclude a bearing assembly whose primary function is shaft support and an ordinary static flange gasket.\",\"positive_example\":\"A marine stern-tube lip-seal cartridge.\",\"negative_example\":\"A propulsion shaft support bearing with no sealing function.\",\"required_facts\":\"rotating_shaft_fluid_boundary_seal\",\"contrary_facts\":\"shaft_support_bearing_only\",\"candidate_role_ids\":\"4rds.role.marine.directional_shaft_sealing\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.truck_bogie\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Rail running truck \/ bogie\",\"applies_to\":\"rail\",\"definition\":\"Rail running assembly supporting a rail vehicle body through wheelsets and suspension-related structural interfaces.\",\"inclusion_criteria\":\"Include complete locomotive or railcar trucks tracked as assemblies, even if wheels and motors are separately identified.\",\"exclusion_criteria\":\"Exclude a single wheelset and non-rail equipment frames.\",\"positive_example\":\"A complete two-axle locomotive truck assembly.\",\"negative_example\":\"A single wheel-and-axle pair removed from a truck.\",\"required_facts\":\"complete_rail_running_truck\",\"contrary_facts\":\"individual_rail_wheelset\",\"candidate_role_ids\":\"4rds.role.rail.running_truck_support\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.wheelset\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Rail wheel-and-axle set\",\"applies_to\":\"rail\",\"definition\":\"Rail running assembly consisting of an axle and its installed rail wheels forming one jointly rotating unit.\",\"inclusion_criteria\":\"Include wheelsets whether motored or unpowered; traction gearing remains separately tracked if it has its own boundary.\",\"exclusion_criteria\":\"Exclude a whole bogie\/truck and a single wheel not yet assembled onto an axle.\",\"positive_example\":\"A wheel-and-axle set installed in a locomotive truck.\",\"negative_example\":\"An entire two-axle rail truck assembly.\",\"required_facts\":\"paired_rail_wheels_on_axle\",\"contrary_facts\":\"complete_multi_wheelset_truck\",\"candidate_role_ids\":\"4rds.role.rail.running_wheelset\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.traction_motor\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Traction motor\",\"applies_to\":\"rail\",\"definition\":\"Electric motor physically designed and identified for delivering traction torque to rail vehicle wheels.\",\"inclusion_criteria\":\"Include replaceable rail traction motors at motor-unit boundary regardless of whether temporarily held in stock.\",\"exclusion_criteria\":\"Exclude general auxiliary electric motors and the complete traction-gear drive.\",\"positive_example\":\"A serialized locomotive traction motor removed for overhaul.\",\"negative_example\":\"A cooling blower motor installed on a locomotive.\",\"required_facts\":\"motor_designed_for_rail_wheel_traction\",\"contrary_facts\":\"auxiliary_electric_drive_motor\",\"candidate_role_ids\":\"4rds.role.rail.wheel_traction_drive\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.traction_gear_drive\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Traction gear drive\",\"applies_to\":\"rail\",\"definition\":\"Rail-specific drive gearing transferring torque from a rail traction motor to a wheelset or axle.\",\"inclusion_criteria\":\"Include traction pinion\/gear assemblies at a distinct replaceable rail drive boundary.\",\"exclusion_criteria\":\"Exclude generic reduction gearboxes and complete traction motors.\",\"positive_example\":\"A replaceable locomotive pinion-to-axle gearing assembly.\",\"negative_example\":\"A marine propulsion reduction gearbox.\",\"required_facts\":\"rail_motor_to_axle_gearing\",\"contrary_facts\":\"general_marine_reduction_gear\",\"candidate_role_ids\":\"4rds.role.rail.traction_gearing\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.brake_actuator\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Rail brake actuator\",\"applies_to\":\"rail\",\"definition\":\"Rail-vehicle brake application unit converting brake-system command or pressure to force at the braking interface.\",\"inclusion_criteria\":\"Include brake cylinders and dedicated rail brake actuator units.\",\"exclusion_criteria\":\"Exclude the system's compressed-air producer and non-brake hydraulic cylinders.\",\"positive_example\":\"A railcar pneumatic brake cylinder.\",\"negative_example\":\"A compressor supplying the train brake air reservoir.\",\"required_facts\":\"rail_brake_force_actuation\",\"contrary_facts\":\"brake_system_air_generation\",\"candidate_role_ids\":\"4rds.role.rail.brake_force_application\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.brake_compressor\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Brake-air compressor\",\"applies_to\":\"rail\",\"definition\":\"Air-compression unit whose design and identified equipment boundary are specifically dedicated to supplying compressed air for rail vehicle braking.\",\"inclusion_criteria\":\"Include onboard locomotive brake-air compressors and their distinct packaged compressor assemblies.\",\"exclusion_criteria\":\"Exclude a general process compressor not designed for the rail brake-air service.\",\"positive_example\":\"A locomotive main reservoir charging compressor for air brakes.\",\"negative_example\":\"A workshop compressor used for general pneumatic tools.\",\"required_facts\":\"rail_brake_air_service_compressor\",\"contrary_facts\":\"general_shop_air_compressor\",\"candidate_role_ids\":\"4rds.role.rail.brake_air_generation; 4rds.role.shared.gas_compression\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.rail_motion.suspension_unit\",\"family_id\":\"4rds.eq.rail_motion\",\"label\":\"Rail suspension assembly\",\"applies_to\":\"rail\",\"definition\":\"Serviceable assembly managing relative motion and load transmission between a rail vehicle body, running truck, or axle through suspension elements.\",\"inclusion_criteria\":\"Include identifiable primary or secondary suspension assemblies and their mounted springs\/dampers when tracked as a unit.\",\"exclusion_criteria\":\"Exclude the whole truck and unassembled loose spring stock not managed as an asset.\",\"positive_example\":\"A rail bogie primary suspension assembly.\",\"negative_example\":\"A complete rail running bogie including wheelsets.\",\"required_facts\":\"rail_vehicle_suspension_module\",\"contrary_facts\":\"entire_running_truck\",\"candidate_role_ids\":\"4rds.role.rail.running_suspension\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.generator_set\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Engine-driven generator set\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated power-generation assembly combining a prime mover and electric generator as one maintained equipment package.\",\"inclusion_criteria\":\"Include packaged marine auxiliary gensets and rail auxiliary power gensets where tracked as a system-level physical assembly.\",\"exclusion_criteria\":\"Exclude a lone diesel engine or a lone alternator that is individually serviced.\",\"positive_example\":\"A skid containing engine, alternator, and common package controls.\",\"negative_example\":\"A bare generator alternator removed from its engine.\",\"required_facts\":\"combined_prime_mover_generator_package\",\"contrary_facts\":\"individual_alternator_only\",\"candidate_role_ids\":\"4rds.role.marine.auxiliary_electric_plant; 4rds.role.rail.traction_electrical_generation\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.alternator\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Electrical alternator\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Individual rotating electrical generator producing alternating electrical output when mechanically driven.\",\"inclusion_criteria\":\"Include alternators within larger gensets when separately tracked by physical identity.\",\"exclusion_criteria\":\"Exclude an integrated genset package and an electrical motor used to drive machinery.\",\"positive_example\":\"A marine generator alternator with its own serial number.\",\"negative_example\":\"An entire skid-mounted engine-generator power set.\",\"required_facts\":\"individual_rotating_ac_generator\",\"contrary_facts\":\"complete_engine_generator_package\",\"candidate_role_ids\":\"4rds.role.marine.alternating_current_generation; 4rds.role.rail.traction_electrical_generation\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.inverter\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Power inverter\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Power-electronic assembly converting direct-current input into a controlled alternating-current output.\",\"inclusion_criteria\":\"Include traction and auxiliary inverters when their tracked physical boundary is the converter.\",\"exclusion_criteria\":\"Exclude rectifiers and battery packs.\",\"positive_example\":\"A traction inverter producing variable-frequency AC output.\",\"negative_example\":\"A rectifier producing DC from incoming AC.\",\"required_facts\":\"dc_input_to_ac_output\",\"contrary_facts\":\"ac_input_to_dc_output\",\"candidate_role_ids\":\"4rds.role.rail.traction_power_conversion\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.rectifier\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Power rectifier\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Power-electronic assembly converting alternating-current input into direct-current output.\",\"inclusion_criteria\":\"Include rail or marine rectifier stacks and modular assemblies.\",\"exclusion_criteria\":\"Exclude inverters, transformers and electrochemical storage.\",\"positive_example\":\"An AC-to-DC rectifier assembly supplying a DC bus.\",\"negative_example\":\"A DC-to-AC traction inverter.\",\"required_facts\":\"ac_input_to_dc_output\",\"contrary_facts\":\"dc_input_to_ac_output\",\"candidate_role_ids\":\"4rds.role.rail.traction_power_conversion\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.transformer\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Electrical transformer\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Electrical apparatus transferring AC energy between circuits through magnetic coupling at a specified turns ratio or isolation configuration.\",\"inclusion_criteria\":\"Include auxiliary and traction power transformers tracked as separate physical units.\",\"exclusion_criteria\":\"Exclude rotating alternators and electronic inverters that produce a synthesized output.\",\"positive_example\":\"A rail traction transformer fed by overhead supply.\",\"negative_example\":\"A semiconductor inverter module.\",\"required_facts\":\"magnetically_coupled_ac_transfer\",\"contrary_facts\":\"semiconductor_dc_ac_conversion\",\"candidate_role_ids\":\"4rds.role.rail.traction_power_conversion\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.switchgear\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Switching and protection assembly\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated assembly intended for electrical circuit connection, isolation, switching, or protective interruption.\",\"inclusion_criteria\":\"Include breaker-and-contactor cabinets tracked as a single switchgear unit.\",\"exclusion_criteria\":\"Exclude a power converter whose principal function is voltage\/frequency conversion rather than switching\/protection.\",\"positive_example\":\"An electrical distribution switchgear cabinet with circuit breakers.\",\"negative_example\":\"A stand-alone inverter controlling traction motor frequency.\",\"required_facts\":\"electrical_circuit_isolation_protection\",\"contrary_facts\":\"principal_power_conversion\",\"candidate_role_ids\":\"4rds.role.shared.electrical_switching_protection\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.electrical.aux_power_supply\",\"family_id\":\"4rds.eq.electrical\",\"label\":\"Auxiliary electrical supply\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Bounded electrical supply unit delivering regulated or conditioned power for non-primary loads from an upstream electrical source.\",\"inclusion_criteria\":\"Include auxiliary DC\/DC modules or auxiliary supplies managed as separate installed assemblies.\",\"exclusion_criteria\":\"Exclude the primary electrochemical battery storage pack and a complete engine-driven genset.\",\"positive_example\":\"A rail control-circuit DC\/DC auxiliary supply.\",\"negative_example\":\"A high-voltage battery pack providing stored electrical energy.\",\"required_facts\":\"conditioned_auxiliary_output\",\"contrary_facts\":\"electrochemical_energy_storage_pack\",\"candidate_role_ids\":\"4rds.role.rail.auxiliary_electrical_supply\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.pump\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Fluid pump\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Physical machine adding mechanical energy to a liquid to create pressure or flow in a fluid circuit.\",\"inclusion_criteria\":\"Include cooling, lube, bilge, hydraulic and fuel transfer pumps when independently identified.\",\"exclusion_criteria\":\"Exclude gas compressors and the complete hydraulic power unit built around a pump.\",\"positive_example\":\"A sea-water centrifugal pump with its own asset record.\",\"negative_example\":\"An engine-driven compressor supplying gas at higher pressure.\",\"required_facts\":\"liquid_pumping_mechanical_work\",\"contrary_facts\":\"gaseous_compression_mechanical_work\",\"candidate_role_ids\":\"4rds.role.marine.bilge_water_management; 4rds.role.marine.engine_cooling_circulation; 4rds.role.marine.lubrication_supply; 4rds.role.shared.hydraulic_pressure_supply; 4rds.role.shared.liquid_process_movement\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.compressor\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Process or utility compressor\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Physical machine raising the pressure of gas, vapor, or air for a process or utility service, without dedicated rail brake-compressor identity.\",\"inclusion_criteria\":\"Include process-air, instrument-air, refrigerant and general compression units as distinct tracked equipment.\",\"exclusion_criteria\":\"Exclude pumps moving predominantly liquid and rail brake-air compressors classified in the specialized class.\",\"positive_example\":\"A compressor used for general shipboard compressed air.\",\"negative_example\":\"An onboard locomotive compressor designed for train braking.\",\"required_facts\":\"general_gas_pressure_generation\",\"contrary_facts\":\"dedicated_rail_brake_compressor\",\"candidate_role_ids\":\"4rds.role.shared.gas_compression\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.hydraulic_power_unit\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Hydraulic power unit\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated hydraulic package supplying pressurized hydraulic fluid, typically combining pumps, reservoir, and associated control\/protective devices.\",\"inclusion_criteria\":\"Include a separately tracked steering or actuation hydraulic power unit at package boundary.\",\"exclusion_criteria\":\"Exclude the individual pump, standalone reservoir, or downstream actuator.\",\"positive_example\":\"A complete steering hydraulic supply skid.\",\"negative_example\":\"A replacement hydraulic pump alone.\",\"required_facts\":\"integrated_hydraulic_supply_package\",\"contrary_facts\":\"standalone_hydraulic_pump_only\",\"candidate_role_ids\":\"4rds.role.shared.hydraulic_pressure_supply\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.control_valve\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Fluid control valve\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Physical flow-control device modifying fluid path, direction, pressure, or flow rate through a controllable restriction or passage.\",\"inclusion_criteria\":\"Include hydraulic, pneumatic, and process control valves.\",\"exclusion_criteria\":\"Exclude electronic control units and piping segments without moving control elements.\",\"positive_example\":\"A proportional hydraulic directional valve.\",\"negative_example\":\"A fixed-length pipe spool with no control element.\",\"required_facts\":\"variable_or_selective_fluid_path\",\"contrary_facts\":\"passive_fixed_pipe_spool\",\"candidate_role_ids\":\"4rds.role.marine.bilge_water_management; 4rds.role.shared.fluid_flow_regulation\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.filter_assembly\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Filter housing or assembly\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Assembly whose defined primary function is retaining particulate or otherwise separable contaminants from a flowing process or utility fluid.\",\"inclusion_criteria\":\"Include replaceable filter housings and combined media\/element assemblies where separately tracked.\",\"exclusion_criteria\":\"Exclude a complete lubricant-conditioning package employing multiple treatment processes and the loose filter element when considered a consumable.\",\"positive_example\":\"A stand-alone lube-oil filter housing.\",\"negative_example\":\"A complete oil purification and dehydration skid.\",\"required_facts\":\"single_stage_filtration_assembly\",\"contrary_facts\":\"multistage_lube_conditioning_skid\",\"candidate_role_ids\":\"4rds.role.shared.lubricant_quality_treatment\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.reservoir\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Fluid reservoir\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Bounded container primarily retaining a specified liquid or gas inventory for supply, surge, or collection within an equipment system.\",\"inclusion_criteria\":\"Include hydraulic sumps and tanks with separate physical asset identity.\",\"exclusion_criteria\":\"Exclude an entire hydraulic power skid and active pumping machinery.\",\"positive_example\":\"A hydraulic oil supply tank.\",\"negative_example\":\"A self-contained hydraulic power unit with pumps and controls.\",\"required_facts\":\"inventory_containment_vessel\",\"contrary_facts\":\"integrated_hydraulic_power_package\",\"candidate_role_ids\":\"4rds.role.shared.fluid_inventory_storage\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.piping_section\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Piping section\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Identifiable passive section of tubing or pipe transporting fluid between connection boundaries.\",\"inclusion_criteria\":\"Include tagged pipe spools and lines whose physical identity is separately managed.\",\"exclusion_criteria\":\"Exclude flow-control valves and flexible shaft drives.\",\"positive_example\":\"A removable pressurized coolant pipe spool.\",\"negative_example\":\"A pressure-regulating control valve.\",\"required_facts\":\"passive_fluid_conduit_span\",\"contrary_facts\":\"active_fluid_flow_control\",\"candidate_role_ids\":\"4rds.role.shared.fluid_conduit_transport\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.fluid.fuel_injector\",\"family_id\":\"4rds.eq.fluid\",\"label\":\"Fuel injector\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Metering delivery component introducing fuel into an engine combustion space under controlled pressure or timing.\",\"inclusion_criteria\":\"Include replaceable diesel or gas-engine fuel injection devices with independently managed identity.\",\"exclusion_criteria\":\"Exclude whole fuel treatment skids and bulk fuel transfer pumps.\",\"positive_example\":\"A serialized unit injector removed from a diesel cylinder.\",\"negative_example\":\"A fuel polishing skid operating upstream of the engine.\",\"required_facts\":\"engine_cylinder_fuel_delivery\",\"contrary_facts\":\"upstream_fuel_conditioning_package\",\"candidate_role_ids\":\"4rds.role.marine.fuel_injection_duty\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.thermal.heat_exchanger\",\"family_id\":\"4rds.eq.thermal\",\"label\":\"Heat exchanger\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Physical apparatus transferring thermal energy between separated fluid streams or between a fluid and another heat-transfer medium.\",\"inclusion_criteria\":\"Include plate, shell-and-tube, and oil-water exchangers without a dedicated radiator class boundary.\",\"exclusion_criteria\":\"Exclude air-cooled radiator assemblies when the specialized radiator class applies.\",\"positive_example\":\"An engine lube-oil-to-cooling-water plate exchanger.\",\"negative_example\":\"An air-cooled finned liquid radiator assembly.\",\"required_facts\":\"fluid_to_fluid_thermal_exchange\",\"contrary_facts\":\"finned_air_cooled_radiator\",\"candidate_role_ids\":\"4rds.role.shared.thermal_exchange\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.thermal.radiator\",\"family_id\":\"4rds.eq.thermal\",\"label\":\"Radiator\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Heat rejection assembly designed primarily to exchange heat between circulating liquid and ambient air across finned passages.\",\"inclusion_criteria\":\"Include locomotive cooling radiators and package radiator modules.\",\"exclusion_criteria\":\"Exclude marine plate coolers exchanging heat between two liquid circuits.\",\"positive_example\":\"A locomotive engine cooling radiator bank.\",\"negative_example\":\"A vessel oil-water plate heat exchanger.\",\"required_facts\":\"finned_liquid_to_air_heat_rejection\",\"contrary_facts\":\"liquid_to_liquid_plate_cooler\",\"candidate_role_ids\":\"4rds.role.shared.thermal_exchange\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.thermal.cooling_fan\",\"family_id\":\"4rds.eq.thermal\",\"label\":\"Cooling fan\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Identifiable rotating airflow machine designated as a cooling-air mover for machinery or heat-transfer equipment.\",\"inclusion_criteria\":\"Include radiator and equipment ventilation fans at the distinct fan-unit boundary.\",\"exclusion_criteria\":\"Exclude the entire HVAC unit and complete engine cooling packages.\",\"positive_example\":\"An independently maintained radiator cooling fan.\",\"negative_example\":\"A complete passenger cabin air-conditioning unit.\",\"required_facts\":\"dedicated_machinery_cooling_air_mover\",\"contrary_facts\":\"packaged_cabin_climate_unit\",\"candidate_role_ids\":\"4rds.role.shared.machinery_cooling_air\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.thermal.chiller\",\"family_id\":\"4rds.eq.thermal\",\"label\":\"Cooling machine\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Mechanical or electrical refrigeration package whose principal output is reduced temperature of a circulated liquid or coolant stream.\",\"inclusion_criteria\":\"Include packaged water chillers used for machinery cooling.\",\"exclusion_criteria\":\"Exclude a cabin HVAC unit whose tracked boundary is occupant climate control and exclude passive heat exchangers.\",\"positive_example\":\"A packaged liquid chiller for an industrial cooling loop.\",\"negative_example\":\"A passenger-cabin air conditioning air-handler package.\",\"required_facts\":\"refrigerated_liquid_chilling_package\",\"contrary_facts\":\"cabin_air_climate_package\",\"candidate_role_ids\":\"4rds.role.shared.cooling_liquid_refrigeration\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.controls.control_unit\",\"family_id\":\"4rds.eq.controls\",\"label\":\"Electronic control unit\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Identifiable electronic or electromechanical apparatus interpreting input states and issuing control instructions to managed equipment.\",\"inclusion_criteria\":\"Include PLC modules and locomotive control controllers when the unit itself performs control decision logic.\",\"exclusion_criteria\":\"Exclude a communications-only gateway or a measurement sensor.\",\"positive_example\":\"An engine control module commanding fuel settings.\",\"negative_example\":\"An Ethernet gateway that routes telemetry without commanding control.\",\"required_facts\":\"equipment_control_decision_logic\",\"contrary_facts\":\"transport_only_telemetry_gateway\",\"candidate_role_ids\":\"4rds.role.shared.machine_control_execution\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.controls.sensor\",\"family_id\":\"4rds.eq.controls\",\"label\":\"Instrument or sensor\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Physical instrument that senses or converts an operating condition into a detectable signal or recorded measurement.\",\"inclusion_criteria\":\"Include pressure transducers, speed pickups, and vibration sensors tracked as units.\",\"exclusion_criteria\":\"Exclude a gateway transmitting sensor readings and the monitored physical engine itself.\",\"positive_example\":\"A vibration accelerometer fixed to a gearbox.\",\"negative_example\":\"A cellular gateway collecting many sensor readings.\",\"required_facts\":\"direct_physical_quantity_sensing\",\"contrary_facts\":\"telemetry_transport_only\",\"candidate_role_ids\":\"4rds.role.shared.machine_condition_sensing\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.controls.data_gateway\",\"family_id\":\"4rds.eq.controls\",\"label\":\"Data gateway\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Hardware or software appliance whose primary equipment function is collecting, translating, buffering, or routing machine data between systems.\",\"inclusion_criteria\":\"Include field protocol gateways and standalone telematics aggregators.\",\"exclusion_criteria\":\"Exclude sensing elements and primary machinery control units.\",\"positive_example\":\"A fieldbus-to-cloud telemetry gateway.\",\"negative_example\":\"An engine ECU executing closed-loop fuel control.\",\"required_facts\":\"protocol_translation_data_routing\",\"contrary_facts\":\"closed_loop_equipment_control\",\"candidate_role_ids\":\"4rds.role.shared.telemetry_transport\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.controls.position_actuator\",\"family_id\":\"4rds.eq.controls\",\"label\":\"Positioning actuator\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Device converting a command or input energy into controlled movement of a non-marine-steering target.\",\"inclusion_criteria\":\"Include damper, valve-positioning, and generic linear\/electric actuator assemblies.\",\"exclusion_criteria\":\"Exclude a dedicated marine rudder actuator or a rail brake actuator within those specialist boundaries.\",\"positive_example\":\"An electric damper positioning actuator.\",\"negative_example\":\"A hydraulic steering ram operating a vessel rudder.\",\"required_facts\":\"general_controlled_position_movement\",\"contrary_facts\":\"dedicated_marine_rudder_steering\",\"candidate_role_ids\":\"4rds.role.marine.steering_motion_source; 4rds.role.shared.controlled_position_movement\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.controls.communications_module\",\"family_id\":\"4rds.eq.controls\",\"label\":\"Communications module\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Identifiable subsystem furnishing radio, wireline, or network communications between devices without being the designated primary data translation gateway.\",\"inclusion_criteria\":\"Include onboard radio data modems or identifiable network communication modules.\",\"exclusion_criteria\":\"Exclude protocol translation gateways and physical measuring instruments.\",\"positive_example\":\"An installed LTE modem module.\",\"negative_example\":\"A gateway combining protocol translation, storage, and telemetry routing.\",\"required_facts\":\"communications_interface_module\",\"contrary_facts\":\"multi_protocol_translation_gateway\",\"candidate_role_ids\":\"4rds.role.shared.telemetry_transport\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.auxiliary.hvac_unit\",\"family_id\":\"4rds.eq.auxiliary\",\"label\":\"Heating or cooling cabin unit\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated equipment assembly providing conditioned air or temperature control for occupied cabins, passenger spaces, or equipment rooms.\",\"inclusion_criteria\":\"Include packaged railcar and vessel cabin climate units.\",\"exclusion_criteria\":\"Exclude stand-alone process chillers and fans whose primary duty is machine cooling.\",\"positive_example\":\"A complete rail passenger saloon air-conditioning unit.\",\"negative_example\":\"A stand-alone radiator cooling fan.\",\"required_facts\":\"occupied_space_climate_package\",\"contrary_facts\":\"single_machine_cooling_fan\",\"candidate_role_ids\":\"4rds.role.rail.passenger_climate_service\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.auxiliary.lubricant_conditioner\",\"family_id\":\"4rds.eq.auxiliary\",\"label\":\"Lubricant conditioning unit\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated service unit designed to maintain or improve lubricant suitability through combined treatment, separation, dehydration, heating, or conditioning operations.\",\"inclusion_criteria\":\"Include mobile or fixed oil conditioning skids with identifiable package identity.\",\"exclusion_criteria\":\"Exclude simple filter housings and engine lubricating-oil pumps.\",\"positive_example\":\"A lube-oil purifier skid incorporating separation and dehydration.\",\"negative_example\":\"A replaceable lube-oil filter housing.\",\"required_facts\":\"integrated_lubricant_treatment\",\"contrary_facts\":\"single_filter_only\",\"candidate_role_ids\":\"4rds.role.shared.lubricant_quality_treatment\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.auxiliary.fuel_treatment_unit\",\"family_id\":\"4rds.eq.auxiliary\",\"label\":\"Fuel treatment unit\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated treatment package conditioning fuel supply quality prior to its final use by engines or other equipment.\",\"inclusion_criteria\":\"Include identifiable filtration\/separation\/heating fuel polishing packages.\",\"exclusion_criteria\":\"Exclude individual cylinder injectors and ordinary transfer pumps without treatment.\",\"positive_example\":\"A combined fuel polishing and water separation module.\",\"negative_example\":\"A diesel cylinder unit injector.\",\"required_facts\":\"upstream_fuel_quality_treatment\",\"contrary_facts\":\"combustion_chamber_fuel_injector\",\"candidate_role_ids\":\"4rds.role.shared.fuel_quality_treatment\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.auxiliary.air_dryer\",\"family_id\":\"4rds.eq.auxiliary\",\"label\":\"Compressed-air dryer\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Equipment assembly that reduces moisture content in an air stream by adsorption, refrigeration, membrane separation, or comparable treatment.\",\"inclusion_criteria\":\"Include rail and marine compressed-air dryer cartridges or packages at their separately tracked boundary.\",\"exclusion_criteria\":\"Exclude compressed-air producing compressors and receiver reservoirs.\",\"positive_example\":\"A locomotive compressed-air desiccant dryer.\",\"negative_example\":\"A brake-air compressor raising air pressure.\",\"required_facts\":\"compressed_air_moisture_removal\",\"contrary_facts\":\"air_pressure_generation\",\"candidate_role_ids\":\"4rds.role.rail.brake_air_treatment\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.auxiliary.fire_suppression_unit\",\"family_id\":\"4rds.eq.auxiliary\",\"label\":\"Fire suppression unit\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Integrated equipment unit intended to store, control, or discharge a fire suppression agent into a protected equipment area.\",\"inclusion_criteria\":\"Include packaged fixed-system fire suppression modules and release units.\",\"exclusion_criteria\":\"Exclude ordinary service pumps that may be used for fire water but are not the suppression package.\",\"positive_example\":\"An engine-room fixed fire suppression cylinder-and-control package.\",\"negative_example\":\"A general-purpose centrifugal transfer pump.\",\"required_facts\":\"packaged_fire_suppression_release\",\"contrary_facts\":\"general_process_transfer_pump\",\"candidate_role_ids\":\"4rds.role.shared.fire_protection_release\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.auxiliary.engine_mount\",\"family_id\":\"4rds.eq.auxiliary\",\"label\":\"Machinery mounting assembly\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Physical load-carrying mounting assembly specifically engineered to support and isolate engine machinery from its surrounding structure.\",\"inclusion_criteria\":\"Include removable engine resilient mount assemblies when maintained as traceable units.\",\"exclusion_criteria\":\"Exclude hull structure and a general non-engine suspension unit.\",\"positive_example\":\"A separately identified elastomeric diesel engine mount.\",\"negative_example\":\"A rail bogie spring suspension module.\",\"required_facts\":\"engine_support_isolation_mount\",\"contrary_facts\":\"rail_running_suspension\",\"candidate_role_ids\":\"4rds.role.shared.engine_support_mounting\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.structure.hull\",\"family_id\":\"4rds.eq.structure\",\"label\":\"Marine hull\",\"applies_to\":\"marine\",\"definition\":\"Primary marine buoyant structural envelope or hull assembly that carries and encloses vessel equipment.\",\"inclusion_criteria\":\"Include the tracked structural hull of a marine vessel when managed as a physical assembly separate from host identity.\",\"exclusion_criteria\":\"Exclude railway frames, free-standing equipment cabinets, and an entire vessel host record if the target is specifically the hull.\",\"positive_example\":\"A vessel's steel hull structure surveyed as a separately managed assembly.\",\"negative_example\":\"A locomotive underframe.\",\"required_facts\":\"marine_buoyant_structural_envelope\",\"contrary_facts\":\"rail_vehicle_support_frame\",\"candidate_role_ids\":\"4rds.role.marine.hull_integrity_structure\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.structure.rail_vehicle_frame\",\"family_id\":\"4rds.eq.structure\",\"label\":\"Rail vehicle frame\",\"applies_to\":\"rail\",\"definition\":\"Principal load-bearing frame structure of a rail vehicle supporting body and mounted equipment.\",\"inclusion_criteria\":\"Include locomotive or railcar frame assemblies when separately tracked from the whole host.\",\"exclusion_criteria\":\"Exclude a marine hull and a protective enclosure cabinet.\",\"positive_example\":\"A locomotive underframe assembly.\",\"negative_example\":\"A vessel hull structure.\",\"required_facts\":\"rail_vehicle_structural_frame\",\"contrary_facts\":\"marine_vessel_hull_structure\",\"candidate_role_ids\":\"4rds.role.rail.vehicle_support_frame\",\"definition_status\":\"original_draft_for_sme_review\"},{\"class_id\":\"4rds.eq.structure.equipment_enclosure\",\"family_id\":\"4rds.eq.structure\",\"label\":\"Equipment enclosure\",\"applies_to\":\"marine; rail; industrial\",\"definition\":\"Bounded protective housing for machinery or electrical equipment when the housing itself has a managed physical identity.\",\"inclusion_criteria\":\"Include weatherproof cabinets, skid enclosures, and standalone instrument shelters.\",\"exclusion_criteria\":\"Exclude primary marine hulls, rail vehicle frames, and the active machine contained inside the enclosure.\",\"positive_example\":\"A removable outdoor electrical cabinet housing.\",\"negative_example\":\"A whole locomotive structural underframe.\",\"required_facts\":\"independent_protective_equipment_housing\",\"contrary_facts\":\"primary_vehicle_structural_frame\",\"candidate_role_ids\":\"4rds.role.shared.protective_enclosure\",\"definition_status\":\"original_draft_for_sme_review\"}],\"roles\":[{\"role_id\":\"4rds.role.marine.host_barge_movement\",\"label\":\"Barge movement host\",\"definition\":\"Marine host assigned to move barges under its own propulsion.\",\"compatible_class_ids\":\"4rds.eq.platform.marine.towboat\",\"domain\":\"marine\",\"assignment_scope\":\"host\",\"boundary_note\":\"A workboat operating only inside a construction site is not automatically a line-haul barge-movement host.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.host_worksite_support\",\"label\":\"Marine worksite support host\",\"definition\":\"Marine host assigned to maintenance, inspection, construction, or other localized worksite support.\",\"compatible_class_ids\":\"4rds.eq.platform.marine.workboat; 4rds.eq.platform.marine.other_vessel\",\"domain\":\"marine\",\"assignment_scope\":\"host\",\"boundary_note\":\"A regular towboat does not change its physical class merely by transporting a work crew.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.propulsion_prime_mover\",\"label\":\"Marine propulsion prime mover\",\"definition\":\"Shaft-power source mechanically driving vessel propulsion equipment.\",\"compatible_class_ids\":\"4rds.eq.power_source.diesel_engine; 4rds.eq.power_source.gas_engine; 4rds.eq.power_source.gas_turbine; 4rds.eq.power_source.electric_motor\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Engine class is independent from propulsion role.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.propulsion_speed_adaptation\",\"label\":\"Marine propulsion ratio control\",\"definition\":\"Assembly adapting propulsion input speed or torque to the intended shaft duty.\",\"compatible_class_ids\":\"4rds.eq.power_transfer.reduction_gear; 4rds.eq.power_transfer.reversing_gear\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not assume the gear physically belongs to its driving engine.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.propulsion_shaft_transfer\",\"label\":\"Marine propulsion shaft path\",\"definition\":\"Rotating element transferring propulsion torque across a physical span.\",\"compatible_class_ids\":\"4rds.eq.power_transfer.driveshaft; 4rds.eq.power_transfer.coupling; 4rds.eq.power_transfer.clutch\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Track the physical unit separately from adjacent rotating machinery.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.primary_propulsor\",\"label\":\"Marine primary propulsor\",\"definition\":\"Thrust-producing component or bounded device used to propel the vessel.\",\"compatible_class_ids\":\"4rds.eq.marine_motion.propeller; 4rds.eq.marine_motion.thruster\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"The same host may use multiple propulsion technologies.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.heading_control_surface\",\"label\":\"Marine direction-control surface\",\"definition\":\"Water-acting assembly used to influence vessel direction.\",\"compatible_class_ids\":\"4rds.eq.marine_motion.rudder\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A steering hydraulic cylinder is not a hydrodynamic surface.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.steering_motion_source\",\"label\":\"Marine steering motion supply\",\"definition\":\"Unit providing controlled motion to directional-control hardware.\",\"compatible_class_ids\":\"4rds.eq.marine_motion.steering_actuator; 4rds.eq.controls.position_actuator\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Use specialized steering actuator class for a dedicated marine rudder unit.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.auxiliary_electric_plant\",\"label\":\"Marine auxiliary electrical generation\",\"definition\":\"Complete auxiliary power-generation assembly supplying onboard electrical loads.\",\"compatible_class_ids\":\"4rds.eq.electrical.generator_set\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"The power plant assembly and its constituent alternator have different physical IDs.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.auxiliary_electric_prime_mover\",\"label\":\"Marine auxiliary generator driver\",\"definition\":\"Prime mover that powers a marine auxiliary generator assembly.\",\"compatible_class_ids\":\"4rds.eq.power_source.diesel_engine; 4rds.eq.power_source.gas_engine\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"An engine remains an engine even within a generator package.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.alternating_current_generation\",\"label\":\"Marine AC generation device\",\"definition\":\"Individual rotating generator producing alternating-current output.\",\"compatible_class_ids\":\"4rds.eq.electrical.alternator\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A whole package should be classified as generator set.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.maneuvering_thrust\",\"label\":\"Marine maneuvering device\",\"definition\":\"Thruster assembly dedicated to transverse or vectored maneuvering thrust.\",\"compatible_class_ids\":\"4rds.eq.marine_motion.thruster\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not classify a loose propeller as a whole maneuvering assembly.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.directional_shaft_sealing\",\"label\":\"Marine rotating penetration sealing\",\"definition\":\"Sealing assembly reducing fluid passage at a propulsion shaft passage.\",\"compatible_class_ids\":\"4rds.eq.marine_motion.shaft_seal\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not conflate sealing with support-bearing function.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.engine_cooling_circulation\",\"label\":\"Marine cooling circuit pumping\",\"definition\":\"Unit circulating liquid in an engine or associated cooling loop.\",\"compatible_class_ids\":\"4rds.eq.fluid.pump\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Cooling role does not change the pump's physical class.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.lubrication_supply\",\"label\":\"Marine lubricant delivery\",\"definition\":\"Unit moving lubricant into or through equipment lubrication circuits.\",\"compatible_class_ids\":\"4rds.eq.fluid.pump\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Oil-quality treatment is a separate duty; the conditioner itself does not automatically act as the lubrication supply pump.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.bilge_water_management\",\"label\":\"Marine bilge-fluid control\",\"definition\":\"Unit assigned to remove or route collected bilge liquid.\",\"compatible_class_ids\":\"4rds.eq.fluid.pump; 4rds.eq.fluid.control_valve\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"An oil-transfer pump used in another duty retains its pump class.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.fuel_injection_duty\",\"label\":\"Marine cylinder fuel injection\",\"definition\":\"Component administering fuel to the combustion chamber.\",\"compatible_class_ids\":\"4rds.eq.fluid.fuel_injector\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A fuel treatment unit is upstream of injection.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.marine.hull_integrity_structure\",\"label\":\"Marine hull structural envelope\",\"definition\":\"Physical structure carrying flotation and hull loads.\",\"compatible_class_ids\":\"4rds.eq.structure.hull\",\"domain\":\"marine\",\"assignment_scope\":\"slot\",\"boundary_note\":\"The hull is distinct from the whole host vessel identity.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.host_rail_traction\",\"label\":\"Locomotive host\",\"definition\":\"Self-powered host unit providing the train's traction.\",\"compatible_class_ids\":\"4rds.eq.platform.rail.diesel_electric_locomotive; 4rds.eq.platform.rail.electric_locomotive\",\"domain\":\"rail\",\"assignment_scope\":\"host\",\"boundary_note\":\"A passive passenger or freight car is not a traction locomotive.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.host_passenger_service\",\"label\":\"Rail passenger host\",\"definition\":\"Rail car host arranged for carrying passengers.\",\"compatible_class_ids\":\"4rds.eq.platform.rail.passenger_car\",\"domain\":\"rail\",\"assignment_scope\":\"host\",\"boundary_note\":\"A locomotive hauling passenger cars is not itself a passenger car.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.host_freight_service\",\"label\":\"Rail freight host\",\"definition\":\"Rail car host arranged for goods transport.\",\"compatible_class_ids\":\"4rds.eq.platform.rail.freight_car\",\"domain\":\"rail\",\"assignment_scope\":\"host\",\"boundary_note\":\"The railway operator's service assignment does not override car construction.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.host_track_maintenance\",\"label\":\"Rail maintenance host\",\"definition\":\"Rail vehicle performing infrastructure examination or repair.\",\"compatible_class_ids\":\"4rds.eq.platform.rail.maintenance_vehicle\",\"domain\":\"rail\",\"assignment_scope\":\"host\",\"boundary_note\":\"A passenger train temporarily carrying tools remains a passenger car.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.diesel_prime_mover\",\"label\":\"Rail onboard engine prime mover\",\"definition\":\"Diesel-fueled mechanical source of onboard propulsion electrical generation.\",\"compatible_class_ids\":\"4rds.eq.power_source.diesel_engine\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A separate engine physical ID survives locomotive renumbering.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.traction_electrical_generation\",\"label\":\"Rail electrical traction generation\",\"definition\":\"Individual generator delivering energy to traction electrical conversion equipment.\",\"compatible_class_ids\":\"4rds.eq.electrical.alternator; 4rds.eq.electrical.generator_set\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Package-level and machine-level instances require separate records.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.traction_power_conversion\",\"label\":\"Rail traction electrical conversion\",\"definition\":\"Unit transforming electric supply into required traction supply type.\",\"compatible_class_ids\":\"4rds.eq.electrical.inverter; 4rds.eq.electrical.rectifier; 4rds.eq.electrical.transformer\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"An inverter is not physically reclassified merely because it changes duty.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.wheel_traction_drive\",\"label\":\"Rail wheel traction motor\",\"definition\":\"Motor delivering electrical-to-mechanical torque to running wheel gearing.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.traction_motor\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"General blower motors are not rail traction motors.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.traction_gearing\",\"label\":\"Rail motor-to-wheel gearing\",\"definition\":\"Geared assembly applying motor torque to an axle or wheelset.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.traction_gear_drive; 4rds.eq.power_transfer.axle_gear\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Use the specialist rail class when axle traction features define the unit.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.running_truck_support\",\"label\":\"Rail running truck support\",\"definition\":\"Assembly supporting vehicle through wheelsets and suspension interfaces.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.truck_bogie\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A single wheelset is smaller than the whole truck.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.running_wheelset\",\"label\":\"Rail running wheelset\",\"definition\":\"Integrated axle-and-wheel pair carrying vehicle load and\/or traction.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.wheelset\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Separate a wheelset from its truck assembly.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.brake_force_application\",\"label\":\"Rail brake force actuator\",\"definition\":\"Unit converting brake command or pressure into applied braking force.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.brake_actuator\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Air generation compressor is not brake application actuator.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.brake_air_generation\",\"label\":\"Rail brake-air supply\",\"definition\":\"Unit producing compressed air for onboard brake supply.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.brake_compressor\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Air dryer removes moisture but does not generate compressed air.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.brake_air_treatment\",\"label\":\"Rail brake-air treatment\",\"definition\":\"Unit drying air upstream of pneumatic brake use.\",\"compatible_class_ids\":\"4rds.eq.auxiliary.air_dryer\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Distinguish compressor and dryer functions.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.running_suspension\",\"label\":\"Rail truck suspension\",\"definition\":\"Unit governing wheelset\/body relative motion and load transfer.\",\"compatible_class_ids\":\"4rds.eq.rail_motion.suspension_unit\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not equate bogie identity to one suspension assembly.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.auxiliary_electrical_supply\",\"label\":\"Rail auxiliary electrical supply\",\"definition\":\"Unit providing regulated non-traction electricity.\",\"compatible_class_ids\":\"4rds.eq.electrical.aux_power_supply; 4rds.eq.power_source.battery_pack\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Energy storage and conversion remain separate equipment classes.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.passenger_climate_service\",\"label\":\"Rail passenger climate supply\",\"definition\":\"Unit conditioning air for an occupied rail compartment.\",\"compatible_class_ids\":\"4rds.eq.auxiliary.hvac_unit\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Equipment cooling fan is not a complete passenger HVAC unit.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.rail.vehicle_support_frame\",\"label\":\"Rail host frame structure\",\"definition\":\"Principal load-bearing vehicle frame.\",\"compatible_class_ids\":\"4rds.eq.structure.rail_vehicle_frame\",\"domain\":\"rail\",\"assignment_scope\":\"slot\",\"boundary_note\":\"The vehicle's whole host identity is distinct from its frame assembly.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.general_rotating_driver\",\"label\":\"General rotating machinery drive\",\"definition\":\"Prime mover producing shaft power for non-specialized processes.\",\"compatible_class_ids\":\"4rds.eq.power_source.electric_motor; 4rds.eq.power_source.diesel_engine; 4rds.eq.power_source.gas_engine; 4rds.eq.power_source.gas_turbine\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Classify physical motor construction independently of duty.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.mechanical_torque_interface\",\"label\":\"Mechanical torque connection\",\"definition\":\"Unit joining, engaging, or transmitting rotation through a bounded interface.\",\"compatible_class_ids\":\"4rds.eq.power_transfer.coupling; 4rds.eq.power_transfer.clutch; 4rds.eq.power_transfer.driveshaft\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A clutch can disengage; a coupling typically cannot.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.rotating_support\",\"label\":\"Rotating support\",\"definition\":\"Unit primarily supporting a rotating shaft or bearing journal.\",\"compatible_class_ids\":\"4rds.eq.power_transfer.bearing_assembly\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Shaft bearing assembly is not an axle gearing unit.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.hydraulic_pressure_supply\",\"label\":\"Hydraulic pressure supply\",\"definition\":\"Unit providing hydraulic fluid energy to downstream equipment.\",\"compatible_class_ids\":\"4rds.eq.fluid.hydraulic_power_unit; 4rds.eq.fluid.pump\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Whole hydraulic supply skid differs from standalone pump.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.liquid_process_movement\",\"label\":\"Process liquid movement\",\"definition\":\"Unit increasing liquid flow or pressure for general process movement.\",\"compatible_class_ids\":\"4rds.eq.fluid.pump\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A gas compressor is not a liquid pump.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.gas_compression\",\"label\":\"Gas compression service\",\"definition\":\"Unit increasing pressure of a gaseous working medium.\",\"compatible_class_ids\":\"4rds.eq.fluid.compressor; 4rds.eq.rail_motion.brake_compressor\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Use rail specialist when dedicated brake-air design applies.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.thermal_exchange\",\"label\":\"Heat transfer duty\",\"definition\":\"Unit transferring heat between process media.\",\"compatible_class_ids\":\"4rds.eq.thermal.heat_exchanger; 4rds.eq.thermal.radiator\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Finned liquid-to-air radiators have specialized class precedence.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.machinery_cooling_air\",\"label\":\"Equipment cooling airflow\",\"definition\":\"Unit moving air for equipment thermal management.\",\"compatible_class_ids\":\"4rds.eq.thermal.cooling_fan\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not use for entire cabin HVAC package.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.fluid_flow_regulation\",\"label\":\"Fluid path regulation\",\"definition\":\"Unit modulating or switching flow in a fluid passage.\",\"compatible_class_ids\":\"4rds.eq.fluid.control_valve\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A fixed pipe segment has no active flow regulation.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.machine_condition_sensing\",\"label\":\"Machine measurement\",\"definition\":\"Unit directly acquiring a physical or chemical machine variable.\",\"compatible_class_ids\":\"4rds.eq.controls.sensor\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A gateway forwarding a reading is not the sensing element.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.machine_control_execution\",\"label\":\"Equipment control processing\",\"definition\":\"Unit interpreting feedback and issuing operational control decisions.\",\"compatible_class_ids\":\"4rds.eq.controls.control_unit\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A sensor-only unit does not execute control decisions.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.controlled_position_movement\",\"label\":\"Non-specialized actuator\",\"definition\":\"Unit producing controlled mechanical displacement for positioning.\",\"compatible_class_ids\":\"4rds.eq.controls.position_actuator\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Marine rudder actuators and rail brake actuators have specialist classes.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.telemetry_transport\",\"label\":\"Industrial data relay\",\"definition\":\"Unit passing measurement or control information between digital systems.\",\"compatible_class_ids\":\"4rds.eq.controls.data_gateway; 4rds.eq.controls.communications_module\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A communications modem and translation gateway have different boundaries.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.protective_enclosure\",\"label\":\"Equipment protection housing\",\"definition\":\"Unit enclosing another identifiable machine or electrical assembly.\",\"compatible_class_ids\":\"4rds.eq.structure.equipment_enclosure\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not confuse equipment enclosure with vehicle host frame.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.fire_protection_release\",\"label\":\"Fire suppression actuation\",\"definition\":\"Complete assembly designated to release fire suppression agent.\",\"compatible_class_ids\":\"4rds.eq.auxiliary.fire_suppression_unit\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A general water pump alone is not the suppression module.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.fuel_quality_treatment\",\"label\":\"Fuel conditioning\",\"definition\":\"Unit removing water\/particulate or otherwise treating fuel.\",\"compatible_class_ids\":\"4rds.eq.auxiliary.fuel_treatment_unit\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"The downstream injector is separate equipment.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.lubricant_quality_treatment\",\"label\":\"Lubricant conditioning\",\"definition\":\"Unit improving lubricant condition by treatment.\",\"compatible_class_ids\":\"4rds.eq.auxiliary.lubricant_conditioner; 4rds.eq.fluid.filter_assembly\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Differentiate multistage skid from stand-alone filter.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.fuel_cell_power_supply\",\"label\":\"Electrochemical feedstock power\",\"definition\":\"Unit producing electrical power from an externally supplied electrochemical reactant.\",\"compatible_class_ids\":\"4rds.eq.power_source.fuel_cell_module\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A rechargeable battery stores energy rather than converting an external reactant flow.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.electrical_switching_protection\",\"label\":\"Electrical switching and protection\",\"definition\":\"Device switching or isolating electrical circuits, or interrupting fault current.\",\"compatible_class_ids\":\"4rds.eq.electrical.switchgear\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Power conversion is not itself protective switchgear.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.fluid_inventory_storage\",\"label\":\"Fluid inventory storage\",\"definition\":\"Passive equipment retaining an identified fluid inventory within a circuit.\",\"compatible_class_ids\":\"4rds.eq.fluid.reservoir\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Do not confuse storage tank with powered hydraulic power unit.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.fluid_conduit_transport\",\"label\":\"Fluid conduit segment\",\"definition\":\"Passive bounded section conveying working fluid between interfaces.\",\"compatible_class_ids\":\"4rds.eq.fluid.piping_section\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A flow-control valve is a separate item.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.cooling_liquid_refrigeration\",\"label\":\"Chilled liquid supply\",\"definition\":\"Packaged equipment actively reducing the temperature of a liquid circuit using refrigeration.\",\"compatible_class_ids\":\"4rds.eq.thermal.chiller\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"A passive heat exchanger may reject heat without mechanical refrigeration.\",\"status\":\"candidate\"},{\"role_id\":\"4rds.role.shared.engine_support_mounting\",\"label\":\"Engine load support and isolation\",\"definition\":\"Tracked unit supporting an engine and mitigating transmission of mechanical loads to its host.\",\"compatible_class_ids\":\"4rds.eq.auxiliary.engine_mount\",\"domain\":\"shared\",\"assignment_scope\":\"slot\",\"boundary_note\":\"Engine mount should not be classified as rail bogie suspension.\",\"status\":\"candidate\"}],\"guides\":[{\"id\":\"4rds.guide.diesel_engine.wear_metals\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Wear metals increasing in oil\",\"summary\":\"The latest sample shows more wear metal than earlier samples from the same engine.\",\"where\":[\"Current laboratory report and prior results for this exact engine\",\"Oil filter and service records\",\"Engine operating hours and recent duty changes\"],\"checks\":[\"Confirm the sample belongs to the correct physical engine and collection date.\",\"Compare the trend using consistent oil hours, oil grade and sampling method.\",\"Review filter changes, top-ups, repairs and the laboratory comments.\",\"Have qualified personnel examine additional indicators or obtain a confirmation sample using the approved procedure.\"],\"possible\":[\"Normal change after maintenance, a new oil charge, or sampling variation\",\"Contaminant entry or changed operating conditions\",\"Possible wear in an oil-wetted component; the metal alone cannot identify a failed part\"],\"capture\":[\"Lab ID, sample date\/precision, iron and other trends, oil hours\",\"Oil make\/grade, recent work and any operational symptoms\",\"Sampling point and engine serial or unresolved identity\"],\"escalate\":\"Promptly escalate a sharp unexplained trend together with low oil pressure, overheating, abnormal noise or metal debris. Follow the equipment operating limits.\",\"keywords\":\"iron fe copper lead chromium wear ppm oil sample sos abnormal trend metal\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.diesel_engine.overheat\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Engine running hotter than normal\",\"summary\":\"Temperature is increasing, fluctuating or producing a cooling-related alarm.\",\"where\":[\"Temperature indication and historical baseline\",\"Accessible coolant-level indication and leakage evidence\",\"External cooler, radiator, seawater path or fan area as installed\"],\"checks\":[\"Verify the reading against another permitted indicator or alarm history.\",\"Review recent coolant service and fluid condition records.\",\"Check accessible external airflow or heat-transfer restrictions without removing guards.\",\"Arrange qualified review of cooling circulation, thermostatic control and heat-exchange performance.\"],\"possible\":[\"Insufficient heat rejection or coolant circulation\",\"Faulty temperature measurement or control\",\"Higher loading or altered ambient\/sea-water conditions\"],\"capture\":[\"Temperature trend, load, ambient or intake-water conditions\",\"Coolant condition, alarms and recent work\",\"When the temperature changed and whether other equipment is affected\"],\"escalate\":\"Follow the manufacturer\u2019s immediate action\/shutdown guidance for overtemperature, steam, coolant loss or hot-fluid release. Never open a hot pressurized cooling system.\",\"keywords\":\"overheating temperature warm hot coolant radiator heat\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.diesel_engine.oil_pressure\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Low or unstable engine oil pressure\",\"summary\":\"Lubrication pressure is below its normal trend or changes unexpectedly.\",\"where\":[\"Engine oil-pressure indication and alarm record\",\"Oil-level indication where safe and accessible\",\"Maintenance history, oil grade and filter information\"],\"checks\":[\"Compare reading to the OEM limits at the same speed and oil temperature.\",\"Check whether an alternate approved indication supports the reading.\",\"Review recent oil service, leaks and abnormal temperature history.\",\"Have qualified personnel investigate pressure generation, restrictions and instrumentation.\"],\"possible\":[\"Lubricant inventory, viscosity or temperature change\",\"Restriction or pressure-control issue\",\"Instrument fault or internal mechanical condition\"],\"capture\":[\"Pressure, speed, oil temperature, operating state\",\"Alarm time, recent service and fluid grade\",\"Evidence supporting or contradicting gauge accuracy\"],\"escalate\":\"A confirmed low oil-pressure alarm may require immediate shutdown under OEM procedures. Do not continue operation merely to complete this guide.\",\"keywords\":\"oil pressure low fluctuates lubrication psi\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.diesel_engine.rough_running\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Rough running, power loss or unusual vibration\",\"summary\":\"The engine feels uneven, makes a new sound or cannot develop its normal power.\",\"where\":[\"Logged engine speed\/load, event messages and power records\",\"Fuel supply and filter service history\",\"Accessible mounts, external leaks and connecting drive equipment\"],\"checks\":[\"Document the conditions when the behavior occurs.\",\"Review fuel quality, recent fueling and engine-service history.\",\"Compare recorded performance across similar loads, if available.\",\"Request qualified inspection of combustion, controls and connected equipment.\"],\"possible\":[\"Fuel delivery or combustion inconsistency\",\"Load change or coupled equipment issue\",\"Mounting, monitoring or internal mechanical issue\"],\"capture\":[\"Speed\/load, symptom duration and location\",\"Fuel, oil and coolant history\",\"Applicable alarm codes and qualified inspection observations\"],\"escalate\":\"Escalate if there is uncontrolled vibration, smoke, fire, fuel spray, loss of control or a critical engine alarm.\",\"keywords\":\"rough running vibration shaking low power misfire smoke\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.reduction_gear.unusual_noise\",\"class_id\":\"4rds.eq.power_transfer.reduction_gear\",\"title\":\"New gearbox whine, knock or vibration\",\"summary\":\"A reduction gear makes a noise or vibration not previously present.\",\"where\":[\"Gear housing and external mounting area, when safely accessible\",\"Lubricant report and maintenance history\",\"Coupling, shaft line and adjacent machinery observations\"],\"checks\":[\"Note whether the sound changes with RPM, load or direction.\",\"Compare recent lubrication sampling and oil grade to baseline.\",\"Look for documented external leaks, heat or abnormal mounting movement.\",\"Have authorized maintainers review alignment and gear\/bearing condition after isolation.\"],\"possible\":[\"Gear or bearing distress\",\"Alignment, coupling or shaft-line influence\",\"Lubrication or operating-condition change\"],\"capture\":[\"Noise description, speed\/load and direction\",\"Oil analysis history, oil hours and housing temperature trend\",\"Recent shaft\/coupling work\"],\"escalate\":\"Stop and escalate new severe knocking, rapidly increasing vibration, smoke or oil loss under approved operating procedures.\",\"keywords\":\"gear whine grinding noise knock transmission vibration\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.reduction_gear.oil_condition\",\"class_id\":\"4rds.eq.power_transfer.reduction_gear\",\"title\":\"Gearbox oil contains water or debris\",\"summary\":\"Oil report or inspection suggests the gear lubricant is contaminated.\",\"where\":[\"Latest gear oil analysis and earlier samples\",\"External seals, breathers and accessible leak indicators\",\"Oil service, topping-up and washdown history\"],\"checks\":[\"Check the sampling point and whether the correct gear was sampled.\",\"Compare water and particle indications with prior results and lab methodology.\",\"Review known seal or breather exposure paths.\",\"Arrange equipment-specific follow-up test and external inspection.\"],\"possible\":[\"Ingress through a seal or breather\",\"Cross-contamination from service activity\",\"Sampling or container contamination\"],\"capture\":[\"Water\/particle result, method and sample identification\",\"Weather\/service events and changes in lubricant\",\"Photographs and qualified findings\"],\"escalate\":\"Escalate quickly if contamination accompanies abnormal temperature, noise, loss of lubrication or loss of propulsion.\",\"keywords\":\"water debris contamination metal oil gearbox emulsified moisture\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.generator_set.no_output\",\"class_id\":\"4rds.eq.electrical.generator_set\",\"title\":\"Generator set not supplying expected power\",\"summary\":\"The generator set runs, but output is absent, unstable, or below its expected performance.\",\"where\":[\"Generator-set monitoring panel and event log\",\"Operating configuration, demand and load history\",\"Alternator, regulator and protective device records\"],\"checks\":[\"Record the exact failure state without resetting or bypassing protection.\",\"Confirm permissible status indications, breaker states and demand conditions.\",\"Review fuel\/engine behavior separately from electrical output.\",\"Refer electrical checks to qualified personnel following isolation and OEM procedures.\"],\"possible\":[\"Protective trip or control issue\",\"Alternator\/excitation or power regulation issue\",\"Mechanical prime-mover limitation\"],\"capture\":[\"Voltage\/frequency readings from installed indicators\",\"Engine speed\/load and alarms\",\"Previous electrical maintenance or protection activity\"],\"escalate\":\"Treat exposed electrical conductors, arcing, fire, repeated protective trips or uncontrolled voltage as urgent; do not open energized panels.\",\"keywords\":\"genset generator no electricity no output voltage frequency power\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.generator_set.hot\",\"class_id\":\"4rds.eq.electrical.generator_set\",\"title\":\"Generator set running hot\",\"summary\":\"A packaged generator set reports excessive temperature or new heat-related warnings.\",\"where\":[\"Cooling ventilation and room conditions\",\"Engine temperature and alternator temperature indications\",\"Recent load and maintenance records\"],\"checks\":[\"Identify whether the alarm comes from the engine, electrical generator or enclosure.\",\"Compare with load, airflow and room temperature history.\",\"Review filter, coolant and ventilation maintenance.\",\"Request qualified inspection of the affected subsystem.\"],\"possible\":[\"Restricted cooling or ventilation\",\"Excess load or electrical loss\",\"Temperature-sensor or control issue\"],\"capture\":[\"Exact alarm source, time and load\",\"Temperature and ventilation status\",\"Recent environmental or service changes\"],\"escalate\":\"Escalate smoke, burning odor, arcing, or manufacturer-defined overtemperature immediately.\",\"keywords\":\"hot overheating generator alternator\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.alternator.unstable_output\",\"class_id\":\"4rds.eq.electrical.alternator\",\"title\":\"Alternator voltage fluctuates\",\"summary\":\"Generator output voltage is unstable or generating abnormal power-quality alarms.\",\"where\":[\"Regulator\/alarm logs and power-quality records\",\"Alternator connection history and load events\",\"Cooling and external enclosure indications\"],\"checks\":[\"Record voltage, frequency, demand and alarm sequence.\",\"Check whether instability coincides with engine-speed changes.\",\"Review recent regulator, wiring and load modifications.\",\"Have qualified electrical technicians test protection and excitation under approved procedures.\"],\"possible\":[\"Prime-mover speed variation\",\"Regulator or excitation issue\",\"Electrical load or connection problem\"],\"capture\":[\"Voltage\/frequency trend, load transitions and alarms\",\"Equipment model and installation changes\",\"Findings from authorized electrical tests\"],\"escalate\":\"Stop unsafe investigation at energized equipment; escalate arcing, insulation smell or protective trips.\",\"keywords\":\"voltage fluctuation power alternator frequency\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.steering_actuator.slow_response\",\"class_id\":\"4rds.eq.marine_motion.steering_actuator\",\"title\":\"Steering responds slowly or unevenly\",\"summary\":\"A steering command produces delayed or inconsistent movement.\",\"where\":[\"Steering-position display and command history\",\"Hydraulic or electrical supply alarm indicators\",\"Accessible external actuator and linkage area\"],\"checks\":[\"Compare indicated command with actual position feedback.\",\"Record whether the behavior differs by direction or load.\",\"Review fluid, pump, sensor and prior steering work records.\",\"Refer movement and pressure checks to qualified personnel with machinery secured.\"],\"possible\":[\"Supply pressure or control issue\",\"Position feedback or actuation issue\",\"Mechanical binding or external load\"],\"capture\":[\"Command, indicated position, and actual response\",\"Operating conditions, alarms and leakage evidence\",\"Recent repairs or adjustments\"],\"escalate\":\"Treat impaired directional control as a navigation safety concern; follow vessel procedures and notify responsible operators immediately.\",\"keywords\":\"steering hydraulic slow rudder directional response\",\"domains\":[\"marine\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.hydraulic_power_unit.pressure_low\",\"class_id\":\"4rds.eq.fluid.hydraulic_power_unit\",\"title\":\"Hydraulic power low or unstable\",\"summary\":\"Hydraulic equipment is sluggish, intermittent or reports insufficient pressure.\",\"where\":[\"Hydraulic power unit pressure\/level indicators\",\"Pump\/motor operating status from approved displays\",\"Accessible external hoses, fittings and filter indicators\"],\"checks\":[\"Document affected function and any alarms.\",\"Review fluid level, temperature and filtration history.\",\"Identify other functions sharing the same hydraulic supply.\",\"Request qualified testing of pump, valves, controls and supply under isolation procedures.\"],\"possible\":[\"Fluid loss or aeration\",\"Pressure regulation, pump or filter issue\",\"Actuator load or measurement issue\"],\"capture\":[\"Pressure trend, fluid level\/temperature and alarms\",\"Which hydraulic functions are impaired\",\"Leak locations and maintenance history\"],\"escalate\":\"High-pressure fluid injection is hazardous: do not touch or hand-check leaks. Escalate lost steering or unsafe movement immediately.\",\"keywords\":\"hydraulic pressure low slow pump HPU\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.propeller.vibration\",\"class_id\":\"4rds.eq.marine_motion.propeller\",\"title\":\"Unusual propulsion vibration\",\"summary\":\"Vibration appears to be associated with the propeller or shaft line.\",\"where\":[\"Propeller\/shaft trend records and operating conditions\",\"Recent grounding, debris strike or maintenance records\",\"Accessible vibration and power-transfer observations\"],\"checks\":[\"Note RPM, thrust direction, speed, and when vibration occurs.\",\"Compare port and starboard conditions when applicable.\",\"Review prior shaft\/propeller inspections and alignment history.\",\"Arrange underwater\/shaft inspection only through approved specialist procedures.\"],\"possible\":[\"Blade damage or fouling\",\"Shaft alignment or bearing issue\",\"Hydrodynamic loading or connected machinery\"],\"capture\":[\"Event date, location and propeller position\",\"Speed\/load relationship and associated noise\",\"Prior incidents, inspection results and photos\"],\"escalate\":\"Escalate loss of propulsion, severe vibration or suspected impact damage. Never enter water or approach rotating shafts as part of a quick check.\",\"keywords\":\"propeller vibrating shaking cavitation thrust\",\"domains\":[\"marine\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.shaft_seal.leakage\",\"class_id\":\"4rds.eq.marine_motion.shaft_seal\",\"title\":\"Water or lubricant near shaft seal\",\"summary\":\"A rotating shaft penetration appears to leak or show changing fluid levels.\",\"where\":[\"Accessible shaft-seal area and fluid recovery indicators\",\"Bilge or seal-system alarm history\",\"Lubricant and sea-water ingress reports\"],\"checks\":[\"Identify whether the fluid is oil, water, or unknown without direct exposure.\",\"Record change over time and associated shaft operation.\",\"Review recent seal service, shaft work and temperature trends.\",\"Arrange approved inspection with propulsion secured as required.\"],\"possible\":[\"Seal wear or damage\",\"Shaft movement or alignment changes\",\"Drainage or adjacent piping source mistaken for seal leakage\"],\"capture\":[\"Observed location, fluid identification and volume trend\",\"Shaft speed, recent work and alarm times\",\"Photographs and confirmed inspection notes\"],\"escalate\":\"Escalate flooding, uncontrolled water ingress, lubrication loss or hot\/leaking seal conditions immediately.\",\"keywords\":\"shaft seal leaking water ingress leak bilge stuffing box\",\"domains\":[\"marine\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.pump.flow_low\",\"class_id\":\"4rds.eq.fluid.pump\",\"title\":\"Pump flow or pressure below normal\",\"summary\":\"The pump is running but the supplied fluid flow or pressure is low.\",\"where\":[\"Pump suction\/discharge indications and trend\",\"Strainers, filter-service records and fluid supply history\",\"Motor\/pump status and accessible external piping\"],\"checks\":[\"Confirm the measurement and operating configuration.\",\"Check recorded fluid level, temperature and known valve positions.\",\"Review maintenance, filter restrictions and system demand changes.\",\"Refer cavitation, internal pump and valve evaluation to qualified maintainers.\"],\"possible\":[\"Restricted inlet or reduced supply\",\"Pump wear, air entry or drive issue\",\"Sensor, control or downstream system change\"],\"capture\":[\"Flow\/pressure\/temperature under known load\",\"Suction conditions and alarms\",\"Fluid service and maintenance history\"],\"escalate\":\"Escalate loss of critical cooling, steering or lubrication flow. Do not open pressurized systems or run equipment dry.\",\"keywords\":\"pump low flow low pressure not pumping cavitation\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.pump.external_leak\",\"class_id\":\"4rds.eq.fluid.pump\",\"title\":\"Fluid showing around pump\",\"summary\":\"A new liquid leak or stain is visible around a pump assembly.\",\"where\":[\"Externally visible pump casing and nearby drain paths\",\"Accessible connections, seals and piping runs\",\"Fluid inventory and leakage monitoring logs\"],\"checks\":[\"Identify the source area only from a safe location.\",\"Compare fluid-level changes and when the leak appears.\",\"Review recent pump service and seal replacements.\",\"Have qualified maintainers isolate and inspect the source.\"],\"possible\":[\"Shaft seal or casing joint issue\",\"Loose or damaged external connection\",\"Nearby leakage traveling to the pump housing\"],\"capture\":[\"Fluid type, location and rate trend\",\"Photographs, equipment state and pressure indication\",\"Recent repairs and operational impacts\"],\"escalate\":\"Escalate fuel spray, hot liquid, high-pressure injection risk, fire hazard or major inventory loss.\",\"keywords\":\"leak drip seal pump fluid dripping\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.filter_assembly.restriction\",\"class_id\":\"4rds.eq.fluid.filter_assembly\",\"title\":\"Filter restriction or differential pressure rising\",\"summary\":\"A filter indicator or measured pressure drop suggests increasing restriction.\",\"where\":[\"Filter differential-pressure or condition indicator\",\"Filter element service and fluid contamination history\",\"Relevant upstream\/downstream pressure trends\"],\"checks\":[\"Confirm the indicator status and service interval.\",\"Compare operating temperature and flow at the time of reading.\",\"Review recent fluid changes, contamination reports and work orders.\",\"Have authorized personnel evaluate the element and bypass condition under OEM procedure.\"],\"possible\":[\"Accumulated debris in the element\",\"Fluid viscosity, temperature or high flow\",\"Instrument issue or unexpected bypass condition\"],\"capture\":[\"Pressure readings and conditions\",\"Element identity and hours since replacement\",\"Fluid-analysis results and service findings\"],\"escalate\":\"If the filter protects critical lubrication or fuel supply, escalate abnormal differential pressure or bypass alarms before continuing.\",\"keywords\":\"filter plugged restriction differential pressure clog bypass\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.heat_exchanger.poor_cooling\",\"class_id\":\"4rds.eq.thermal.heat_exchanger\",\"title\":\"Heat exchanger not removing enough heat\",\"summary\":\"A fluid remains hotter than usual after passing through a cooling unit.\",\"where\":[\"Inlet\/outlet temperature indicators\",\"Cooling-fluid flow and supply condition\",\"Historical performance and maintenance records\"],\"checks\":[\"Confirm measured temperature difference at comparable loading.\",\"Review flow, fouling, environmental conditions and recent service.\",\"Check permitted external indicators for reduced circulation or bypass.\",\"Refer internal fouling and integrity tests to qualified maintenance personnel.\"],\"possible\":[\"Reduced fluid flow or heat-transfer surface fouling\",\"Higher load or warmer cooling supply\",\"Measurement or control problem\"],\"capture\":[\"Inlet\/outlet temperatures and flow indications\",\"Duty\/load, surrounding conditions and maintenance\",\"Leak or contamination symptoms\"],\"escalate\":\"Escalate critical overheating, pressure release or coolant loss; do not open hot or pressurized equipment.\",\"keywords\":\"cooling heat exchanger not cooling high temperature\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.cooling_fan.airflow_loss\",\"class_id\":\"4rds.eq.thermal.cooling_fan\",\"title\":\"Cooling airflow reduced\",\"summary\":\"A cooling fan or machine enclosure reports low airflow or high temperature.\",\"where\":[\"Fan alarm\/status display\",\"External ventilation inlets and outlets\",\"Motor\/fan maintenance records\"],\"checks\":[\"Confirm demand versus actual fan status from safe indicators.\",\"Look for externally visible restrictions without opening guards.\",\"Review temperature trends and fan control changes.\",\"Request qualified inspection of drive, bearings and controls.\"],\"possible\":[\"Air intake\/outlet restriction\",\"Fan drive or electrical-control issue\",\"Temperature sensing or abnormal cooling demand\"],\"capture\":[\"Fan status, temperature and ambient conditions\",\"Alarms, load and service history\",\"External obstruction photos where safe\"],\"escalate\":\"Escalate when cooling loss threatens critical equipment or there is smoke, burning odor or exposed rotating machinery.\",\"keywords\":\"fan airflow low blocked ventilation cooling\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.traction_motor.hot\",\"class_id\":\"4rds.eq.rail_motion.traction_motor\",\"title\":\"Traction motor temperature elevated\",\"summary\":\"A rail traction-motor temperature or thermal alarm is above its normal pattern.\",\"where\":[\"Traction motor and inverter event records\",\"Cooling-air indication and exterior accessible ducting\",\"Motor position, axle group and maintenance history\"],\"checks\":[\"Record the identified motor position, speed and load when the warning occurred.\",\"Compare with other motors on the same locomotive under similar conditions.\",\"Review cooling, insulation and sensor histories.\",\"Refer electrical and mechanical measurements to authorized railway maintainers.\"],\"possible\":[\"Cooling restriction or excessive electrical loading\",\"Bearing or drive-train mechanical condition\",\"Temperature sensor, cable or inverter issue\"],\"capture\":[\"Motor position and serial identity\",\"Temperature\/current alarms and conditions\",\"Wheelset, gearbox and ventilation inspection findings\"],\"escalate\":\"An overheated traction motor can present electrical and fire risk. Follow railroad and OEM defect-handling procedures; do not access energized traction equipment.\",\"keywords\":\"traction motor hot overheat temperature locomotive rail\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.traction_motor.vibration\",\"class_id\":\"4rds.eq.rail_motion.traction_motor\",\"title\":\"Traction motor vibration or unusual sound\",\"summary\":\"New vibration or noise is associated with a locomotive traction-motor area.\",\"where\":[\"Available vibration\/inspection history\",\"Wheelset, bearing and traction-gear service records\",\"Speed-dependent event descriptions\"],\"checks\":[\"Record speed, loading, direction, and whether noise changes with operation.\",\"Check permitted exterior visual observations and maintenance history.\",\"Review whether the motor, gear drive, wheelset or running truck was recently replaced.\",\"Request qualified inspection with the equipment secured and traction energy isolated.\"],\"possible\":[\"Motor bearing issue\",\"Gear-drive or axle interface condition\",\"Wheelset, truck or mounting influence\"],\"capture\":[\"Motor and truck positions\",\"Noise\/vibration operating conditions\",\"Prior work, inspection reports and alarms\"],\"escalate\":\"Escalate severe vibration, wheel\/axle defects, smoke, or other defects that may affect safe railroad operation.\",\"keywords\":\"rail motor vibration traction shaking grinding\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.traction_gear_drive.noise\",\"class_id\":\"4rds.eq.rail_motion.traction_gear_drive\",\"title\":\"Traction gear noise or abnormal wear debris\",\"summary\":\"Gear-drive sound or lubrication data has changed.\",\"where\":[\"Gear-drive oil or grease records, if applicable\",\"Motor-to-axle gear inspection history\",\"Wheelset and bearing condition reports\"],\"checks\":[\"Verify the trackable drive unit and operating position.\",\"Compare maintenance findings and lubricant results to prior history.\",\"Identify whether the noise follows speed, load or direction.\",\"Have qualified railway maintainers inspect the gear assembly.\"],\"possible\":[\"Gear tooth or bearing condition\",\"Lubrication or contamination issue\",\"Misalignment or adjacent rotating equipment\"],\"capture\":[\"Drive identity, location and motor association\",\"Noise pattern and lubricant evidence\",\"Service records and inspector findings\"],\"escalate\":\"Escalate abnormal axle-drive noises or defects affecting safe operation; do not access moving undercarriage equipment.\",\"keywords\":\"traction gears gear drive whining grinding wear\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.brake_compressor.slow_air\",\"class_id\":\"4rds.eq.rail_motion.brake_compressor\",\"title\":\"Brake system air pressure building slowly\",\"summary\":\"Air supply is taking longer than usual to reach its required operating condition.\",\"where\":[\"Installed compressor\/air-system indicators and event log\",\"Air dryer and compressor maintenance history\",\"Permitted external leak reports or status indications\"],\"checks\":[\"Record actual indicated pressure and time sequence; do not improvise a brake test.\",\"Review compressor duty, air-dryer status and recent service.\",\"Check whether low-pressure alarms or other affected circuits are present.\",\"Refer leak, cut-in\/cut-out and brake tests to authorized rail personnel under applicable rules.\"],\"possible\":[\"Air leakage or excessive demand\",\"Compressor, governor or dryer condition\",\"Pressure sensing or system configuration issue\"],\"capture\":[\"Recorded air pressure and operating state\",\"Defect reports and maintenance records\",\"Qualified brake-test results\"],\"escalate\":\"A brake-air defect may make a train unsafe to operate. Follow the railroad\u2019s applicable inspection and defect procedures; never bypass brake protection.\",\"keywords\":\"air brake compressor low slow build pressure rail\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.brake_compressor.moisture\",\"class_id\":\"4rds.eq.rail_motion.brake_compressor\",\"title\":\"Moisture or contamination in brake-air system\",\"summary\":\"Air supply records show unexpected water, oil or other contamination.\",\"where\":[\"Air-dryer service history\",\"Authorized moisture inspections and condition records\",\"Compressor lubricant and air-system defects\"],\"checks\":[\"Document what was observed and where.\",\"Review dryer operation and service intervals.\",\"Check whether condensation or compressor carryover has been recorded.\",\"Refer air-system remediation and testing to qualified railway technicians.\"],\"possible\":[\"Air-dryer performance issue\",\"Compressor carryover or moisture intrusion\",\"Seasonal effects or maintenance condition\"],\"capture\":[\"Observation type and collection location\",\"Weather\/operating circumstances\",\"Dryer, compressor and brake maintenance findings\"],\"escalate\":\"Escalate conditions affecting required brake operation, especially in freezing weather; follow the railroad\u2019s safety rules.\",\"keywords\":\"brake air water moisture dryer oil contamination\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.wheelset.new_noise\",\"class_id\":\"4rds.eq.rail_motion.wheelset\",\"title\":\"Wheelset vibration, unusual sound or hot bearing\",\"summary\":\"A locomotive or railcar has new wheel\/axle noise or a heat-related indication.\",\"where\":[\"Wheelset position and prior inspection reports\",\"Bearing and truck maintenance history\",\"Detector or onboard alarm information, if available\"],\"checks\":[\"Confirm the identified axle or wheelset position.\",\"Record speed, recent operation, alarms and exact observed symptoms.\",\"Review last wheelset\/bearing inspection and replacement.\",\"Ensure qualified rail personnel perform necessary defect evaluation.\"],\"possible\":[\"Wheel, axle or bearing condition\",\"Brake drag, track interaction or connected drive issue\",\"Instrument or location misidentification\"],\"capture\":[\"Position and serial identity\",\"Alarms and inspection measurements\",\"Work history and operator observations\"],\"escalate\":\"Treat indications of overheated bearings, damaged wheels or unsafe rolling gear as an immediate railroad-safety escalation under applicable operating rules.\",\"keywords\":\"wheelset wheel axle bearing hotbox noise vibration flat spot\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.inverter.fault\",\"class_id\":\"4rds.eq.electrical.inverter\",\"title\":\"Traction inverter fault or protective trip\",\"summary\":\"A power-conversion system has reported a fault or unexpectedly interrupted traction.\",\"where\":[\"Installed fault codes, inverter diagnostics and event times\",\"Cooling and power-supply status indications\",\"Previous electrical maintenance and traction-system configuration\"],\"checks\":[\"Capture fault codes before any authorized reset process.\",\"Record traction demand, speed and operating context.\",\"Review related motor and supply alarms.\",\"Assign high-voltage investigation to trained personnel following railway isolation procedures.\"],\"possible\":[\"Cooling or input-power anomaly\",\"Power-electronic or connected motor fault\",\"Control or sensing issue\"],\"capture\":[\"Exact fault codes, time and sequence\",\"Locomotive and inverter identities\",\"Authorized maintenance findings\"],\"escalate\":\"Do not open or probe high-voltage traction equipment. Escalate smoke, arcing, fire or failures affecting safe operation immediately.\",\"keywords\":\"inverter traction converter fault trip power electronic locomotive\",\"domains\":[\"rail\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.bearing_assembly.temperature\",\"class_id\":\"4rds.eq.power_transfer.bearing_assembly\",\"title\":\"Bearing temperature rising\",\"summary\":\"A bearing monitor or inspection indicates more heat than the equipment baseline.\",\"where\":[\"Bearing position and trend monitoring\",\"Lubrication and related shaft\/axle service records\",\"Accessible temperature and vibration displays\"],\"checks\":[\"Identify the physical bearing assembly and exact position.\",\"Compare changes in temperature with operating load and speed.\",\"Review lubricant service and adjacent machinery history.\",\"Refer internal inspection to authorized maintainers after safe isolation.\"],\"possible\":[\"Lubrication quality or supply issue\",\"Load, fit, alignment or bearing wear\",\"Sensor or external heat transfer\"],\"capture\":[\"Temperature trend, load\/speed and alarms\",\"Lubrication record and service age\",\"Inspection and vibration information\"],\"escalate\":\"Escalate rapidly increasing bearing heat, smoke, or abnormal noise; railroad wheel-bearing concerns require rail-specific defect procedures.\",\"keywords\":\"bearing hot heating journal vibration temperature\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.bearing_assembly.noise\",\"class_id\":\"4rds.eq.power_transfer.bearing_assembly\",\"title\":\"Bearing making new rumbling or scraping sound\",\"summary\":\"A rotating support develops noise or vibration not seen in earlier service.\",\"where\":[\"Bearing service log and equipment configuration\",\"Vibration and temperature records\",\"Nearby coupling, shaft or wheelset maintenance\"],\"checks\":[\"Document where the sound is strongest without approaching rotating parts.\",\"Compare operating speed\/load conditions and trend.\",\"Review recent lubrication and replacement history.\",\"Arrange authorized inspection of bearings, mounting and adjacent power-transfer components.\"],\"possible\":[\"Wear or damaged rolling\/contact surfaces\",\"Lubrication condition or contamination\",\"Load, alignment or nearby machinery\"],\"capture\":[\"Location and operating state\",\"Noise\/vibration history and temperature\",\"Qualified findings and component identity\"],\"escalate\":\"Escalate severe noise, rapidly increasing vibration or heat; isolate energy before any hands-on checks.\",\"keywords\":\"bearing rumbling squeal scraping vibration\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.fuel_injector.rough_combustion\",\"class_id\":\"4rds.eq.fluid.fuel_injector\",\"title\":\"Fuel injection concern or uneven combustion\",\"summary\":\"The machine has an injection-related indication or unexplained uneven running.\",\"where\":[\"Engine performance history and diagnostic log\",\"Fuel condition and filter records\",\"Recent injector replacement or cylinder work\"],\"checks\":[\"Record symptoms at comparable load and speed.\",\"Review fuel quality, prior engine alarms and maintenance.\",\"Compare available cylinder-specific readings if the OEM provides them.\",\"Refer injector testing and replacement to trained engine maintainers.\"],\"possible\":[\"Injector condition\",\"Fuel supply\/quality condition\",\"Compression, control or sensor influence\"],\"capture\":[\"Injector\/cylinder location if known\",\"Load, speed, smoke observations and warnings\",\"Recent repairs and fuel source changes\"],\"escalate\":\"Never loosen a running high-pressure injection line. Escalate fuel spray, fire or severe engine distress immediately.\",\"keywords\":\"fuel injector rough combustion misfire cylinder\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.sensor.bad_reading\",\"class_id\":\"4rds.eq.controls.sensor\",\"title\":\"Sensor reading seems wrong or jumps\",\"summary\":\"A display shows a measurement inconsistent with nearby observations or suddenly changing without context.\",\"where\":[\"Sensor identity and exact measurement location\",\"Alarm\/event history and data acquisition chain\",\"Comparison measurements from approved independent indications\"],\"checks\":[\"Confirm units, timestamps and whether the value is raw or calculated.\",\"Review power, communication and recent calibration history.\",\"Compare against another permitted measurement only where safe.\",\"Ask qualified personnel to investigate sensor and wiring faults.\"],\"possible\":[\"Sensor calibration or signal problem\",\"Data mapping, scaling or timestamp error\",\"A genuine physical event requiring investigation\"],\"capture\":[\"Sensor ID and location\",\"Raw reading, units, time zone and other indications\",\"Calibration\/service details\"],\"escalate\":\"Never dismiss a safety-critical alarm as a sensor failure without verification. Escalate accordingly.\",\"keywords\":\"sensor signal drifting jumping strange reading inaccurate\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.control_unit.alarm\",\"class_id\":\"4rds.eq.controls.control_unit\",\"title\":\"Repeated controller alarms or missing communication\",\"summary\":\"The machinery controller shows fault events or its data feed is interrupted.\",\"where\":[\"Controller alarm\/event history\",\"Power and network health status from approved displays\",\"Recent software, configuration and wiring changes\"],\"checks\":[\"Document exact codes and time sequence.\",\"Separate machinery fault alarms from communication-only events.\",\"Review authorized changes and related sensor histories.\",\"Refer controller and wiring diagnostics to qualified personnel.\"],\"possible\":[\"Communication or power instability\",\"Connected device\/sensor issue\",\"Controller configuration or internal fault\"],\"capture\":[\"Controller\/version identity and timestamps\",\"Codes, affected functions and network status\",\"Changes and approved diagnostics\"],\"escalate\":\"If control of safety-critical machinery is impaired, follow operating procedures and escalate without attempting unauthorized resets.\",\"keywords\":\"control controller alarms communications offline reset\",\"domains\":[\"marine\",\"rail\",\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\"},{\"id\":\"4rds.guide.transit.traction_motor_overheat\",\"class_id\":\"4rds.eq.rail_motion.traction_motor\",\"title\":\"Traction motor temperature or odor reported\",\"summary\":\"A passenger rail vehicle has a newly reported hot-motor indication, unusual smell, or unusual noise.\",\"where\":[\"Vehicle fault and temperature records\",\"The traction motor location and its recent service history\",\"Nearby cooling and ventilation system reports\"],\"checks\":[\"Confirm which car, axle position and physical motor the warning identifies.\",\"Compare recorded readings against that vehicle\u2019s recent operation and approved criteria.\",\"Ask qualified maintenance personnel to inspect the cooling and motor area under safe access conditions.\"],\"possible\":[\"Cooling restriction\",\"Bearing or drive issue\",\"Electrical loading or sensor error\"],\"capture\":[\"Vehicle number, motor position, event time and operator report\",\"Alarm codes and recorded temperatures\",\"Changes after recent maintenance\"],\"escalate\":\"Follow operator safety rules and remove affected equipment from service for qualified assessment when overheating, smoke, or abnormal running is suspected. Do not access live traction equipment.\",\"keywords\":\"subway light rail transit smell motor traction hot\",\"domains\":[\"transit\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.transit.inverter_trip\",\"class_id\":\"4rds.eq.electrical.inverter\",\"title\":\"Traction power trips while accelerating\",\"summary\":\"A transit vehicle reports repeated traction inverter faults when starting or accelerating.\",\"where\":[\"Control-system event history\",\"Inverter cooling and enclosure status from approved indicators\",\"Recent vehicle or propulsion maintenance\"],\"checks\":[\"Record exact fault text and which vehicle experienced it.\",\"Check whether the event repeats under similar operating conditions without deliberately recreating a hazardous trip.\",\"Review cooling, power and communication alarms with authorized technicians.\"],\"possible\":[\"Overtemperature protection\",\"Power supply disturbance\",\"Internal drive or monitoring fault\"],\"capture\":[\"Event time, alarm and trip codes\",\"Ambient conditions and duty at time of occurrence\",\"Service history and return-to-service assessment\"],\"escalate\":\"Do not reset protective trips repeatedly or access high-voltage traction equipment. Follow transit authority restrictions and qualified electrical procedures.\",\"keywords\":\"metro subway light rail inverter acceleration trip propulsion\",\"domains\":[\"transit\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.transit.wheelset_thumping\",\"class_id\":\"4rds.eq.rail_motion.wheelset\",\"title\":\"Repeating thump or vibration from a passenger car\",\"summary\":\"A repeating sound or vibration follows vehicle speed and may originate near running gear.\",\"where\":[\"Operator and passenger incident reports\",\"Wheelset monitoring and inspection records\",\"Vehicle truck and axle position history\"],\"checks\":[\"Record speed range and which vehicle location is affected.\",\"Review wheel condition and bearing-alert records from approved inspection systems.\",\"Arrange qualified inspection using the operator\u2019s running-gear procedures.\"],\"possible\":[\"Wheel tread damage\",\"Running-gear misalignment\",\"Nearby suspension or bearing condition\"],\"capture\":[\"Car number, truck and axle position\",\"Event date, approximate speed and reported location\",\"Approved inspection findings\"],\"escalate\":\"Treat abnormal running-gear noise, wheel damage indicators or hot-bearing alarms as a vehicle safety issue and follow the operator\u2019s removal-from-service rules.\",\"keywords\":\"metro wheel flat spot thump rumble subway rail passenger\",\"domains\":[\"transit\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.transit.hvac_passenger\",\"class_id\":\"4rds.eq.auxiliary.hvac_unit\",\"title\":\"Passenger compartment heating or cooling weak\",\"summary\":\"Interior temperatures no longer respond as expected during normal passenger service.\",\"where\":[\"Vehicle HVAC status indications\",\"Cabin temperature records and air distribution points\",\"HVAC service and filter history\"],\"checks\":[\"Compare reported and measured cabin temperatures where instruments are approved.\",\"Review commanded operating mode and onboard fault history.\",\"Have authorized staff check airflow restrictions and unit status during maintenance.\"],\"possible\":[\"Airflow restriction\",\"Cooling or heating equipment performance loss\",\"Temperature control or sensor error\"],\"capture\":[\"Car number and affected compartment\",\"Indoor and outdoor temperature data\",\"Faults, timing and recent maintenance\"],\"escalate\":\"Escalate promptly where temperatures threaten passenger welfare or where smoke, odor or electrical faults are reported. Avoid access to powered HVAC equipment without authorization.\",\"keywords\":\"subway transit passenger train air conditioning hvac warm hot cold\",\"domains\":[\"transit\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.offshore.deck_hydraulic_response\",\"class_id\":\"4rds.eq.fluid.hydraulic_power_unit\",\"title\":\"Offshore deck hydraulics respond slowly\",\"summary\":\"A deck-mounted or process hydraulic system responds more slowly than its normal operating behavior.\",\"where\":[\"Operator observations and approved hydraulic indications\",\"Reservoir level and visible condition from safe observation points\",\"Recent equipment changes and maintenance records\"],\"checks\":[\"Identify the precise hydraulic unit and affected function.\",\"Compare reported pressure and temperature trends from installed instrumentation.\",\"Have a qualified team review documented leaks and equipment condition under the site permit system.\"],\"possible\":[\"Hydraulic supply restriction\",\"Fluid condition or temperature change\",\"Control or actuator issue\"],\"capture\":[\"System tag and affected function\",\"Timestamped pressure or temperature logs\",\"Inspection findings and any visible leak report\"],\"escalate\":\"Stop and escalate if motion is uncontrolled, personnel are exposed to suspended loads, or pressurized hydraulic fluid is escaping. Never loosen fittings under pressure.\",\"keywords\":\"offshore platform hydraulic deck winch slow pressure\",\"domains\":[\"offshore\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.offshore.shaft_seal_observation\",\"class_id\":\"4rds.eq.marine_motion.shaft_seal\",\"title\":\"Fluid reported near offshore shaft sealing\",\"summary\":\"Water or lubricant is reported near a rotating shaft seal on an applicable offshore marine drive.\",\"where\":[\"Seal monitoring records\",\"Authorized machinery-space observation points\",\"Lubricant and bilge records associated with the unit\"],\"checks\":[\"Confirm the identified shaft and seal installation.\",\"Compare leakage indications with historical monitoring and approved limits.\",\"Ask qualified personnel to investigate only after appropriate isolation and safe access.\"],\"possible\":[\"Seal wear or movement\",\"Drain or nearby connection leakage\",\"External water entry from another location\"],\"capture\":[\"Shaft position and unit identification\",\"Fluid appearance and observed location\",\"Sample evidence and recent work history\"],\"escalate\":\"Report increasing water ingress or lubricant loss under the installation\u2019s marine emergency and pollution procedures. Avoid contact with moving shafts.\",\"keywords\":\"offshore thruster seal shaft water ingress fluid leak\",\"domains\":[\"offshore\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.offshore.generator_load_shift\",\"class_id\":\"4rds.eq.electrical.generator_set\",\"title\":\"Offshore generator load or output unstable\",\"summary\":\"A generator set experiences unexplained changes in output or repeated load-sharing alarms.\",\"where\":[\"Generator and bus load logs\",\"Control and protection event history\",\"Engine service and cooling records\"],\"checks\":[\"Confirm which unit and operating mode produced the indication.\",\"Compare load trends, frequency and voltage records with the applicable operating envelope.\",\"Refer protection and synchronization concerns to qualified power personnel.\"],\"possible\":[\"Control or load-sharing issue\",\"Prime-mover performance change\",\"Instrumentation or protection event\"],\"capture\":[\"Unit ID and generator role\",\"Voltage, frequency, loading and alarms\",\"Concurrent equipment events\"],\"escalate\":\"Follow the facility electrical safety and emergency-power procedures. Do not bypass protection or attempt manual synchronization outside authorized procedures.\",\"keywords\":\"offshore generator electrical load shedding unstable power\",\"domains\":[\"offshore\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.offshore.gas_detector_disagreement\",\"class_id\":\"4rds.eq.controls.sensor\",\"title\":\"Conflicting offshore gas detection indications\",\"summary\":\"One gas-detection reading differs from another indicator or from the expected operating situation.\",\"where\":[\"Fixed gas detection status and control-room alarm log\",\"Device calibration and bump-test history maintained by qualified staff\",\"Related ventilation and process event records\"],\"checks\":[\"Record the exact alarm and detector location from a safe position.\",\"Notify the responsible control-room or safety function.\",\"Have authorized instrumentation staff verify the instrument under the facility gas-safety procedure.\"],\"possible\":[\"Sensor malfunction\",\"Environmental or process concentration differences\",\"Calibration or communication issue\"],\"capture\":[\"Alarm code, detector ID and reported concentration\",\"Time and other detector indications\",\"Safety response and approved verification results\"],\"escalate\":\"Treat any credible gas alarm as real until the facility response procedure determines otherwise. Do not approach a potentially hazardous area to check the instrument.\",\"keywords\":\"offshore gas detector combustible h2s methane conflicting alarm\",\"domains\":[\"offshore\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.oilgas.compressor_vibration\",\"class_id\":\"4rds.eq.fluid.compressor\",\"title\":\"Process compressor vibration increasing\",\"summary\":\"A process or utility compressor shows rising vibration or unusual running behavior.\",\"where\":[\"Condition-monitoring trend and trip history\",\"Lubrication and seal-system records\",\"Operating-pressure and process-flow history\"],\"checks\":[\"Verify compressor tag and measurement point.\",\"Review vibration change alongside process conditions and recent starts.\",\"Request qualified rotating-equipment evaluation of safeguards and trends.\"],\"possible\":[\"Process instability\",\"Bearing or coupling condition\",\"Measurement or support-system issue\"],\"capture\":[\"Vibration trend and measurement units\",\"Suction\/discharge process context and alarms\",\"Recent work and machine identity\"],\"escalate\":\"Escalate abnormal vibration, leak detection, seal alarms or protective trips immediately under the site process-safety plan. Do not approach suspect equipment.\",\"keywords\":\"oil gas refinery petrochemical compressor surging vibration\",\"domains\":[\"oilgas\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.oilgas.pump_seal_fluid\",\"class_id\":\"4rds.eq.fluid.pump\",\"title\":\"Liquid visible near a process pump\",\"summary\":\"A process pump has a newly reported external wet area or visible seepage.\",\"where\":[\"Approved leak and containment reports\",\"Pump seal and nearby flange locations from diagrams\",\"Process-fluid identification and maintenance history\"],\"checks\":[\"Identify the liquid and its hazards from approved documentation; do not touch or sample it.\",\"Check available process alarms and operating records from a safe location.\",\"Have authorized operations staff assess containment and required isolation.\"],\"possible\":[\"Seal-system leakage\",\"Nearby piping or fitting leakage\",\"Residual fluid from earlier work\"],\"capture\":[\"Pump tag, fluid service and source of observation\",\"Location, time and available process indicators\",\"Containment and authorized inspection outcome\"],\"escalate\":\"For suspected flammable, toxic or pressurized releases, follow site emergency, reporting and isolation procedures. Do not attempt hands-on inspection.\",\"keywords\":\"refinery hydrocarbon seal leak pump spill\",\"domains\":[\"oilgas\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.oilgas.valve_disagreement\",\"class_id\":\"4rds.eq.fluid.control_valve\",\"title\":\"Valve commanded position differs from indication\",\"summary\":\"Control system requests one valve position, but feedback indicates another.\",\"where\":[\"Control-system trend and alarm history\",\"Position feedback and control source\",\"Actuator service records and process operating context\"],\"checks\":[\"Confirm the valve tag and whether the feedback value is current.\",\"Compare command, feedback and measured process response.\",\"Assign qualified controls personnel to investigate under approved work and process procedures.\"],\"possible\":[\"Actuator or control-air concern\",\"Position feedback error\",\"Mechanical restriction\"],\"capture\":[\"Valve tag and control mode\",\"Timestamped demand, position feedback and related process values\",\"Permits and verification findings\"],\"escalate\":\"Escalate any loss of containment, hazardous process deviation or unreliable safety-critical valve under the site process-safety procedures.\",\"keywords\":\"process control valve position stuck oil gas refinery\",\"domains\":[\"oilgas\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.oilgas.exchanger_approach\",\"class_id\":\"4rds.eq.thermal.heat_exchanger\",\"title\":\"Process heat exchanger performance declining\",\"summary\":\"A process temperature difference is changing and the exchanger may no longer meet its expected duty.\",\"where\":[\"Recorded inlet\/outlet temperatures and flows\",\"Process-stream service information\",\"Past cleaning, inspection and bypass histories\"],\"checks\":[\"Confirm which exchanger and process stream is affected.\",\"Compare approved temperature and flow trends at comparable operating loads.\",\"Ask process engineering to evaluate measurements and fouling possibilities.\"],\"possible\":[\"Surface fouling\",\"Flow or bypass difference\",\"Sensor or process loading change\"],\"capture\":[\"Exchanger ID and stream conditions\",\"Correct units and time series\",\"Process-engineer assessment and inspection records\"],\"escalate\":\"Escalate potential overpressure, containment issues, or process safety limit exceedance rather than adjusting equipment based on this guide.\",\"keywords\":\"refinery exchanger heat duty delta temperature fouling\",\"domains\":[\"oilgas\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.power.turbine_temperature\",\"class_id\":\"4rds.eq.power_source.gas_turbine\",\"title\":\"Gas turbine temperature pattern changing\",\"summary\":\"A turbine report shows a new abnormal temperature pattern or related health alarm.\",\"where\":[\"Control-room trend records\",\"Alarm and protection history\",\"Ambient and load data with recent service information\"],\"checks\":[\"Identify the unit, operating mode and instrument positions.\",\"Compare available normalized trends from approved instrumentation.\",\"Refer protection and combustion concerns to qualified turbine personnel.\"],\"possible\":[\"Instrument drift\",\"Combustion or airflow change\",\"Operating condition or cooling-system difference\"],\"capture\":[\"Unit designation and recorded trends\",\"Load, ambient and fuel context\",\"Trip\/event history and engineering review\"],\"escalate\":\"Treat turbine protection, fire alarms, or hazardous leakage as urgent operational events. Never override limits or open energized\/hot equipment.\",\"keywords\":\"power gas turbine exhaust spread temperature anomaly\",\"domains\":[\"power\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.power.transformer_alarm\",\"class_id\":\"4rds.eq.electrical.transformer\",\"title\":\"Transformer heat or warning indication\",\"summary\":\"A transformer is reported hotter than expected or displays a new condition alarm.\",\"where\":[\"Substation monitoring and alarm system\",\"Transformer loading and cooling history\",\"Inspection, fluid-test and maintenance records\"],\"checks\":[\"Confirm transformer identity and monitor source remotely.\",\"Compare trends with load and environmental context using approved data.\",\"Refer thermal, gas or protection alarms to authorized electrical specialists.\"],\"possible\":[\"Overload or cooling loss\",\"Instrument or monitoring issue\",\"Internal electrical condition\"],\"capture\":[\"Asset tag and voltage class\",\"Load\/temperature\/condition alarms with dates\",\"Specialist assessment and test results\"],\"escalate\":\"Do not approach damaged or leaking high-voltage equipment. Follow utility electrical clearance and emergency procedures.\",\"keywords\":\"transformer heat alarm power substation electrical\",\"domains\":[\"power\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.power.alternator_voltages\",\"class_id\":\"4rds.eq.electrical.alternator\",\"title\":\"Generating-unit voltage fluctuating\",\"summary\":\"An alternator associated with a generating unit has unstable recorded electrical output.\",\"where\":[\"Plant control and protection event history\",\"Excitation\/control records where available\",\"Prime-mover and load change records\"],\"checks\":[\"Identify whether disturbance follows demand, prime-mover or alternator indication.\",\"Review recorded voltage, frequency and protection events.\",\"Refer corrective testing to qualified electrical staff.\"],\"possible\":[\"Regulation or excitation issue\",\"Load variability\",\"Measurement or connection concern\"],\"capture\":[\"Unit tag and operating state\",\"Electrical trends and trip records\",\"Completed verified inspections\"],\"escalate\":\"Follow plant electrical safety policy and equipment protection rules; never bridge or disable protection to test an output fluctuation.\",\"keywords\":\"power plant alternator generator voltage unstable\",\"domains\":[\"power\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.power.cooling_fan_heat\",\"class_id\":\"4rds.eq.thermal.cooling_fan\",\"title\":\"Station cooling fan not delivering normal airflow\",\"summary\":\"A plant cooling fan has reduced airflow or an abnormal sound or fault indication.\",\"where\":[\"Fan control and condition history\",\"Equipment cooling temperature trends\",\"Duct\/filter and fan service records\"],\"checks\":[\"Identify the affected fan and protected equipment.\",\"Review available run status and thermal readings.\",\"Arrange safe inspection of restrictions and rotating parts by authorized maintenance personnel.\"],\"possible\":[\"Airflow obstruction\",\"Drive or bearing problem\",\"Control\/feedback issue\"],\"capture\":[\"Fan ID and area\",\"Operating indications and temperature trend\",\"Safe inspection findings\"],\"escalate\":\"Escalate when loss of cooling threatens electrical, turbine or safety-critical equipment. Keep clear of running fans and exposed electrical parts.\",\"keywords\":\"power station fan cooling airflow\",\"domains\":[\"power\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.manufacturing.motor_heat\",\"class_id\":\"4rds.eq.power_source.electric_motor\",\"title\":\"Production-line motor running hot\",\"summary\":\"A production motor temperature is increasing or operators notice an unusual odor.\",\"where\":[\"Motor operating and overload history\",\"Cooling and ventilation condition reports\",\"Driven load and maintenance records\"],\"checks\":[\"Record exact motor and driven equipment identity.\",\"Compare available current, temperature and duty records.\",\"Arrange authorized inspection under machine-specific energy-control rules.\"],\"possible\":[\"Overloaded process\",\"Cooling restriction\",\"Bearing or electrical condition\"],\"capture\":[\"Motor ID, machine and observed time\",\"Trend values and operator observations\",\"Condition of the driven equipment\"],\"escalate\":\"Escalate smoke, burning smell, unsafe motion or electrical protective trips. Never open guards or approach rotating machinery while energized.\",\"keywords\":\"factory electric motor overheating conveyor line\",\"domains\":[\"manufacturing\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.manufacturing.line_bearing_rumble\",\"class_id\":\"4rds.eq.power_transfer.bearing_assembly\",\"title\":\"Production conveyor bearing noise increasing\",\"summary\":\"A bearing area in a production line makes a new scraping, rumbling or cyclical noise.\",\"where\":[\"Bearing position and accessible condition-monitoring reports\",\"Machine load, cycle and speed history\",\"Lubrication and recent replacement records\"],\"checks\":[\"Locate the bearing using equipment documentation rather than approaching moving parts.\",\"Compare monitoring trends or operator reports.\",\"Obtain an isolated inspection by authorized maintenance staff.\"],\"possible\":[\"Lubrication issue\",\"Bearing degradation\",\"Adjacent rotating assembly noise\"],\"capture\":[\"Line ID and bearing position\",\"Noise start time and operating conditions\",\"Verified maintenance\/inspection results\"],\"escalate\":\"Stop and escalate where guarding, excessive heat or suspected failure makes operation unsafe. Do not reach into equipment or remove guards to observe.\",\"keywords\":\"manufacturing conveyor bearing rumble wear\",\"domains\":[\"manufacturing\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.manufacturing.air_dryer_moisture\",\"class_id\":\"4rds.eq.auxiliary.air_dryer\",\"title\":\"Compressed-air supply contains more moisture\",\"summary\":\"Moisture is detected downstream of a manufacturing compressed-air dryer.\",\"where\":[\"Dryer alarms and cycle history\",\"Downstream moisture measurement records\",\"Compressed-air utility and maintenance logs\"],\"checks\":[\"Confirm instrument location and whether the reading is verified.\",\"Compare inlet\/outlet conditions and dryer mode records.\",\"Refer possible dryer or drain issues to qualified utilities staff.\"],\"possible\":[\"Drying process issue\",\"Condensate management problem\",\"Faulty measurement or high demand\"],\"capture\":[\"Dryer ID and air network location\",\"Measurement method and result\",\"Downstream equipment or product impacts\"],\"escalate\":\"Escalate if contaminated air could affect safety systems, breathing-air service, or product quality. Do not defeat dryer or compressor protections.\",\"keywords\":\"factory pneumatic air wet moisture dryer\",\"domains\":[\"manufacturing\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.manufacturing.gateway_no_data\",\"class_id\":\"4rds.eq.controls.data_gateway\",\"title\":\"Equipment readings disappear from dashboard\",\"summary\":\"Machine telemetry or remote trends stop updating while the equipment remains in service.\",\"where\":[\"Data gateway health and communication alarms\",\"Sensor and control system timestamps\",\"IT or network change records\"],\"checks\":[\"Check the age of the last valid reading and source identity.\",\"Compare with local approved indications without bypassing control systems.\",\"Refer network or configuration investigation to authorized controls\/IT teams.\"],\"possible\":[\"Network or gateway failure\",\"Data-tag mapping error\",\"Sensor power or interface issue\"],\"capture\":[\"Affected data points and timestamps\",\"Gateway and source tag identifiers\",\"Event logs and any restoration confirmation\"],\"escalate\":\"Do not treat missing telemetry as evidence of healthy operation. Follow site rules if monitoring of critical machinery is unavailable.\",\"keywords\":\"industrial factory remote data telemetry missing scada dashboard\",\"domains\":[\"manufacturing\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.mining.mobile_engine_cooling\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Mine mobile engine temperature rising\",\"summary\":\"A diesel-powered mining vehicle reports higher operating temperature than its normal trend.\",\"where\":[\"Operator equipment and warning logs\",\"Cooling-system maintenance history\",\"Service-hour, ambient and work-cycle records\"],\"checks\":[\"Confirm machine identity and location.\",\"Compare reported temperature against prior duty cycles without intentionally overloading the unit.\",\"Have authorized mechanics inspect cooling status after safe parking and energy control.\"],\"possible\":[\"Cooling airflow restriction\",\"Coolant-system issue\",\"Load or sensor difference\"],\"capture\":[\"Unit ID and engine serial where known\",\"Temperature and alarm trend\",\"Duty\/ambient information\"],\"escalate\":\"Follow mine traffic and safe-parking procedures. Escalate rising temperature, fluid release, or engine protection events before continued operation.\",\"keywords\":\"mine haul truck diesel engine hot cooling\",\"domains\":[\"mining\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.mining.hydraulic_slow\",\"class_id\":\"4rds.eq.fluid.hydraulic_power_unit\",\"title\":\"Mining equipment hydraulic motion slow\",\"summary\":\"A mining machine or fixed hydraulic work unit responds slowly or unevenly.\",\"where\":[\"Equipment operator reports\",\"Hydraulic status alarms and fluid service logs\",\"Affected actuator and duty history\"],\"checks\":[\"Identify the affected motion and whether any load is suspended.\",\"Review pressure\/temperature trends from approved indicators.\",\"Schedule authorized investigation with proper immobilization and energy control.\"],\"possible\":[\"Supply or fluid restriction\",\"Control valve issue\",\"Actuator leakage or sensor error\"],\"capture\":[\"Machine, position and operating condition\",\"Recorded hydraulic trends\",\"Qualified inspection and corrective work\"],\"escalate\":\"Stop and escalate uncontrolled motion, fluid injection hazards or unexpected movement. Never inspect under a raised component without approved support and isolation.\",\"keywords\":\"mining hydraulic loader shovel weak slow\",\"domains\":[\"mining\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.mining.crusher_bearing\",\"class_id\":\"4rds.eq.power_transfer.bearing_assembly\",\"title\":\"Fixed mining process bearing alarm\",\"summary\":\"A crusher or screening machine reports a higher bearing temperature or vibration alarm.\",\"where\":[\"Remote condition-monitoring displays\",\"Lubrication records\",\"Process load and maintenance history\"],\"checks\":[\"Verify bearing and measurement-point identity.\",\"Compare load-adjusted monitoring trends and sensor quality.\",\"Arrange authorized inspection using established isolation procedures.\"],\"possible\":[\"Lubrication concern\",\"Machine or process loading change\",\"Bearing or support fault\"],\"capture\":[\"Machine position and condition history\",\"Load changes and alarm times\",\"Inspection results and samples\"],\"escalate\":\"Escalate rapid heating, unusual motion or suspected mechanical failure. Remain clear of energized crusher and conveyor equipment.\",\"keywords\":\"aggregate crushing plant hot bearing vibration\",\"domains\":[\"mining\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.mining.slurry_piping\",\"class_id\":\"4rds.eq.fluid.piping_section\",\"title\":\"Slurry line pressure or leakage concern\",\"summary\":\"A processing line has a visible wet area, pressure change or apparent material-loss report.\",\"where\":[\"Approved line pressure and flow indications\",\"Piping diagrams and inspection records\",\"Wear and corrosion monitoring history\"],\"checks\":[\"Confirm exact line and service from the process documentation.\",\"Review available trends and leak reports from a safe location.\",\"Engage authorized operations for inspection and containment decisions.\"],\"possible\":[\"Pipe wear or joint leakage\",\"Process blockage\",\"Faulty measurement or adjacent leak\"],\"capture\":[\"Line tag and material description\",\"Position and timing of observed anomaly\",\"Authorized assessment and containment response\"],\"escalate\":\"Do not approach a pressurized line suspected of rupturing or containing hazardous material; follow mine\/process emergency and isolation procedures.\",\"keywords\":\"mining slurry pipeline abrasive leak pressure\",\"domains\":[\"mining\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.construction.diesel_power_smoke\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Construction engine loses power or smokes\",\"summary\":\"A construction machine shows an unusual exhaust appearance or responds with less power.\",\"where\":[\"Operator reports and fault history\",\"Air, fuel and service records\",\"Engine load and work-cycle data\"],\"checks\":[\"Identify the machine, engine and duty when symptoms occur.\",\"Review fault codes and service history without bypassing emission or safety equipment.\",\"Arrange qualified evaluation of supply, airflow and combustion systems.\"],\"possible\":[\"Airflow\/fuel delivery issue\",\"Load or operating-condition change\",\"Instrument or control fault\"],\"capture\":[\"Machine ID and engine serial\",\"Smoke color description and timing\",\"Fault codes and recent service\"],\"escalate\":\"Stop and escalate heavy smoke, fire indicators, runaway symptoms, or unsafe power loss. Follow manufacturer and site operating rules.\",\"keywords\":\"excavator wheel loader bulldozer diesel power smoke\",\"domains\":[\"construction\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.construction.digging_slow\",\"class_id\":\"4rds.eq.fluid.hydraulic_power_unit\",\"title\":\"Boom or bucket movement unusually slow\",\"summary\":\"Hydraulically powered construction equipment moves more slowly than expected.\",\"where\":[\"Operator work-cycle report\",\"Hydraulic temperature and pressure indications\",\"Service and fluid records\"],\"checks\":[\"Identify which motion is affected and whether the machine is stabilized.\",\"Compare approved hydraulic readings under normal recorded operating conditions.\",\"Refer mechanical checks to qualified technicians after equipment is safely supported.\"],\"possible\":[\"Hydraulic supply restriction\",\"Control or actuator issue\",\"Temperature or sensor effect\"],\"capture\":[\"Machine and boom\/bucket position\",\"Recorded symptoms and available readings\",\"Maintenance findings\"],\"escalate\":\"Do not work beneath raised attachments or approach potential high-pressure leaks. Escalate uncontrolled or unintended motion immediately.\",\"keywords\":\"excavator boom bucket loader hydraulic slow\",\"domains\":[\"construction\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.construction.dust_cooling_fan\",\"class_id\":\"4rds.eq.thermal.cooling_fan\",\"title\":\"Cooling airflow reduced in dusty conditions\",\"summary\":\"The cooling fan or associated system appears unable to maintain expected airflow in dusty jobsite operation.\",\"where\":[\"Engine and machine temperature indicators\",\"Airflow and filter service records\",\"Worksite dust and duty history\"],\"checks\":[\"Compare temperature history with similar site conditions.\",\"Record available fan status and cooling-system alarms.\",\"Schedule safe inspection of guards, filters and fan area after authorized shutdown.\"],\"possible\":[\"Dust blockage\",\"Fan drive issue\",\"Cooling-system load or sensor issue\"],\"capture\":[\"Unit ID and recent service\",\"Observed dust\/temperature conditions\",\"Verified safe inspection results\"],\"escalate\":\"Escalate rapid temperature rise, damaged guards or overheating warnings. Never clear debris from a running fan.\",\"keywords\":\"construction dusty fan blocked cooling\",\"domains\":[\"construction\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.construction.reservoir_loss\",\"class_id\":\"4rds.eq.fluid.reservoir\",\"title\":\"Hydraulic fluid level decreasing\",\"summary\":\"An equipment hydraulic reservoir is reported to lose fluid between routine checks.\",\"where\":[\"Reservoir level records and machine duty history\",\"Service records and reported spill locations\",\"Hydraulic-system visual reports\"],\"checks\":[\"Verify readings were taken using the manufacturer\u2019s proper method and machine state.\",\"Compare fluid-added history and timing.\",\"Ask qualified maintenance staff to inspect safely for possible leakage or reporting error.\"],\"possible\":[\"External leakage\",\"Inconsistent measurement conditions\",\"Internal component or line issue\"],\"capture\":[\"Asset ID and reservoir location\",\"Level\/added volume and observation times\",\"Authorized leak inspection or repair record\"],\"escalate\":\"Treat sudden fluid loss, spills, or erratic machine movement as operational hazards; do not touch suspected pressurized leaks.\",\"keywords\":\"construction heavy equipment excavator hydraulic reservoir loss\",\"domains\":[\"construction\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.water.pump_noise_flow\",\"class_id\":\"4rds.eq.fluid.pump\",\"title\":\"Treatment pump noisy with lower flow\",\"summary\":\"A water or wastewater pump has new noise alongside reduced observed flow.\",\"where\":[\"Pump pressure, flow and motor trend history\",\"Intake\/suction conditions from approved remote indications\",\"Maintenance and standby-pump history\"],\"checks\":[\"Confirm pump location and process role.\",\"Compare operating measurements with historical conditions without intentionally stressing the pump.\",\"Assign qualified operations staff to evaluate intake, piping and pump condition.\"],\"possible\":[\"Intake restriction or entrained air\",\"Mechanical wear\",\"Flow-meter or process-condition error\"],\"capture\":[\"Pump ID and served process\",\"Flow and pressure data\",\"Observed noise location and operator response\"],\"escalate\":\"Follow utility continuity-of-service and confined-space rules. Escalate flooding, process overflow or loss of required treatment capacity.\",\"keywords\":\"water wastewater lift station noisy pump low flow cavitation\",\"domains\":[\"water\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.water.filter_dp_high\",\"class_id\":\"4rds.eq.fluid.filter_assembly\",\"title\":\"Water-process filter pressure difference increasing\",\"summary\":\"A treatment-system filter indicates a rising differential pressure or unexpected restriction warning.\",\"where\":[\"Influent and effluent pressure logs\",\"Filter cycle\/cleaning history\",\"Instrumentation and valve-status records\"],\"checks\":[\"Record which filter and sampling period are involved.\",\"Verify whether the change corresponds to flow and cleaning cycle.\",\"Have operations evaluate the approved filter maintenance response.\"],\"possible\":[\"Media loading\",\"Flow or valve change\",\"Pressure instrument issue\"],\"capture\":[\"Filter ID and operating flow\",\"Upstream\/downstream pressure trend\",\"Cleaning events and verified results\"],\"escalate\":\"Escalate any condition that could compromise treated-water quality, overflow controls or required service; do not bypass treatment equipment based on this guide.\",\"keywords\":\"water drinking water wastewater filter dp differential clogged\",\"domains\":[\"water\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.water.sensor_conflict\",\"class_id\":\"4rds.eq.controls.sensor\",\"title\":\"Water quality or process readings conflict\",\"summary\":\"Different instruments or laboratory results disagree about a water-process condition.\",\"where\":[\"Instrument identity, measurement location and data history\",\"Laboratory sample identity and time\",\"Calibration and quality-control records\"],\"checks\":[\"Check whether values describe the same sample location and time.\",\"Preserve original readings and identify units and methods.\",\"Refer verification to certified\/authorized water quality staff under applicable procedures.\"],\"possible\":[\"Different sample timing or location\",\"Sensor drift or fouling\",\"Laboratory or data transcription error\"],\"capture\":[\"Site and sample locations\",\"Values, units, calibration status and chain of custody\",\"Confirmatory results and operator decisions\"],\"escalate\":\"Treat potential water quality exceedances or control limits as operational\/compliance matters. Follow required notification and sampling plans.\",\"keywords\":\"water wastewater treatment sensor chlorine turbidity ph reading\",\"domains\":[\"water\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.water.valve_position\",\"class_id\":\"4rds.eq.fluid.control_valve\",\"title\":\"Treatment valve position not matching command\",\"summary\":\"A water treatment or distribution valve does not show the expected position after a control command.\",\"where\":[\"SCADA demand and feedback records\",\"Valve and actuator maintenance history\",\"Process pressure, flow and operating status\"],\"checks\":[\"Confirm valve identification and whether feedback is current.\",\"Compare command history, position report and process response.\",\"Have authorized operators investigate position and flow under approved site controls.\"],\"possible\":[\"Actuator supply problem\",\"Mechanical restriction\",\"Position indication error\"],\"capture\":[\"Valve tag and direction\/mode\",\"Command, feedback and flow trends\",\"Authorized verification result\"],\"escalate\":\"Escalate uncontrolled flows, loss of disinfection or service, or risk of flooding. Do not override process interlocks.\",\"keywords\":\"wastewater valve control scada not responding\",\"domains\":[\"water\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.ports.crane_hydraulic\",\"class_id\":\"4rds.eq.fluid.hydraulic_power_unit\",\"title\":\"Cargo-handling hydraulics slow or erratic\",\"summary\":\"Terminal handling equipment displays uneven hydraulic response during normal operation.\",\"where\":[\"Equipment fault and operator report\",\"Hydraulic status and service records\",\"Load and cycle history\"],\"checks\":[\"Identify the affected function and whether any load is suspended.\",\"Review pressure and temperature data from the approved console.\",\"Arrange qualified inspection after operations have secured the equipment.\"],\"possible\":[\"Hydraulic supply or restriction\",\"Control valve issue\",\"Sensor or actuator problem\"],\"capture\":[\"Crane or handling equipment ID and duty\",\"Reported alarm and recorded response\",\"Maintenance and operator disposition\"],\"escalate\":\"Stop lifting activities and escalate unexpected or unsafe motion. Never work under suspended loads or inspect pressurized lines directly.\",\"keywords\":\"port terminal container crane hydraulic slow\",\"domains\":[\"ports\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.ports.hoist_motor\",\"class_id\":\"4rds.eq.power_source.electric_motor\",\"title\":\"Hoist or handling motor overheating\",\"summary\":\"A terminal motor serving a hoist or handling function has a temperature or overload warning.\",\"where\":[\"Drive fault and motor telemetry\",\"Hoist service and load history\",\"Electrical cooling and maintenance records\"],\"checks\":[\"Record motor ID, duty and warning details.\",\"Compare temperature and current trends using approved systems.\",\"Refer drive and motor inspection to authorized maintenance after safe equipment isolation.\"],\"possible\":[\"Repeated high load\",\"Cooling restriction\",\"Electrical or bearing condition\"],\"capture\":[\"Equipment ID, motor and drive identifiers\",\"Load\/fault sequence\",\"Verified maintenance findings\"],\"escalate\":\"Do not continue lifting when safety-related overload or motor protection is active. Follow crane and terminal-specific procedures.\",\"keywords\":\"port container crane hoist motor hot overload\",\"domains\":[\"ports\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.ports.conveyor_bearing\",\"class_id\":\"4rds.eq.power_transfer.bearing_assembly\",\"title\":\"Terminal conveyor bearing noise or heat\",\"summary\":\"A material-handling conveyor reports vibration or a localized hot-bearing condition.\",\"where\":[\"Remote bearing and conveyor monitoring\",\"Cargo type, load and running history\",\"Inspection and lubrication reports\"],\"checks\":[\"Verify monitoring location and conveyor section.\",\"Compare observations with speed and load history.\",\"Have authorized crews inspect only after required energy isolation.\"],\"possible\":[\"Lubrication or contamination problem\",\"Bearing deterioration\",\"Material-handling load change\"],\"capture\":[\"Conveyor position and equipment tag\",\"Heat\/vibration trends\",\"Cargo, maintenance and verified cause findings\"],\"escalate\":\"Escalate overheating near combustible cargo or any guard, belt or bearing damage. Keep clear of moving conveyors.\",\"keywords\":\"port terminal conveyor bearing cargo grain heat\",\"domains\":[\"ports\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.ports.shore_switchgear\",\"class_id\":\"4rds.eq.electrical.switchgear\",\"title\":\"Terminal switchgear trips or alarms\",\"summary\":\"A shore terminal electrical distribution assembly reports unexplained protection or status events.\",\"where\":[\"Electrical protection and alarm history\",\"Affected feeder and connected loads\",\"Recent utility and maintenance changes\"],\"checks\":[\"Identify affected panel and circuit through approved records.\",\"Review event sequence and the associated power\/load changes.\",\"Refer protection investigation to licensed or otherwise qualified electrical staff.\"],\"possible\":[\"Load-related trip\",\"Equipment condition\",\"Protective device or monitoring event\"],\"capture\":[\"Panel\/feeder identifiers\",\"Trip timestamp and protective indication\",\"Authorized diagnostic outcome\"],\"escalate\":\"Do not reset repeatedly or open energized distribution cabinets. Follow site electrical clearance requirements.\",\"keywords\":\"port shore power switchgear breaker trip crane terminal\",\"domains\":[\"ports\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.fleet.oil_wear\",\"class_id\":\"4rds.eq.power_source.diesel_engine\",\"title\":\"Truck engine oil wear indicator increasing\",\"summary\":\"A road-fleet engine oil sample shows a change from its established pattern.\",\"where\":[\"Correct truck engine and sample history\",\"Fuel, oil, idle hours and maintenance records\",\"Other supported oil-condition and operating readings\"],\"checks\":[\"Confirm the sample was collected from the correct physical engine and time.\",\"Compare consistent lubricant, service intervals, duty and laboratory methods.\",\"Refer abnormal trends to the fleet technical reviewer rather than assuming a failed part.\"],\"possible\":[\"Operating or service interval variation\",\"Possible component wear\",\"Sampling or contamination issue\"],\"capture\":[\"Truck\/unit and engine serial\",\"Laboratory numbers with oil hours and dates\",\"Recent repair or oil change history\"],\"escalate\":\"Escalate low oil pressure, severe engine noise, warning lamps or unsafe driving behavior using fleet procedures.\",\"keywords\":\"truck diesel oil analysis iron metals lubricant engine\",\"domains\":[\"fleet\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.fleet.driveline_shudder\",\"class_id\":\"4rds.eq.power_transfer.driveshaft\",\"title\":\"Road vehicle driveline shudder or vibration\",\"summary\":\"A commercial vehicle has a new vibration that may follow vehicle speed or driveline load.\",\"where\":[\"Driver report including speed and load\",\"Driveshaft and coupling maintenance history\",\"Relevant vehicle inspection findings\"],\"checks\":[\"Record exactly when the symptom occurs and its severity without recreating unsafe conditions.\",\"Review documented shaft, coupling and related equipment service.\",\"Arrange a qualified lift\/inspection in an approved shop environment.\"],\"possible\":[\"Driveline imbalance or wear\",\"Related mounting or coupling issue\",\"Nearby wheel or running-gear condition\"],\"capture\":[\"Vehicle, driveline position and affected speed range\",\"Inspection records and repair history\",\"Verified technician findings\"],\"escalate\":\"Remove from service where driveline vibration is severe or a failed component is suspected. Do not inspect beneath an unsecured vehicle.\",\"keywords\":\"truck heavy fleet driveline shaft shudder vibration\",\"domains\":[\"fleet\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.fleet.charging_voltage\",\"class_id\":\"4rds.eq.electrical.alternator\",\"title\":\"Commercial vehicle charging voltage abnormal\",\"summary\":\"A fleet vehicle indicates an unexpected electrical charging or voltage condition.\",\"where\":[\"Vehicle warning logs and service history\",\"Alternator and auxiliary power records\",\"Recent battery or electrical work\"],\"checks\":[\"Identify affected unit and the relevant voltage display.\",\"Review operating mode and recorded charging trend.\",\"Ask qualified vehicle electrical staff to inspect with manufacturer-approved procedures.\"],\"possible\":[\"Alternator output issue\",\"Battery or connection condition\",\"Instrument or control error\"],\"capture\":[\"Vehicle ID and event time\",\"Available voltages and warning codes\",\"Battery, alternator and repair history\"],\"escalate\":\"Escalate electrical smoke, strong odor or critical power faults. Follow high-voltage precautions for electrified vehicles.\",\"keywords\":\"truck charging voltage alternator low battery\",\"domains\":[\"fleet\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.fleet.cooling_traffic\",\"class_id\":\"4rds.eq.thermal.radiator\",\"title\":\"Fleet engine overheating during heavy duty\",\"summary\":\"A truck or service vehicle experiences rising coolant temperature in traffic or under load.\",\"where\":[\"Engine temperature and duty records\",\"Radiator\/cooling maintenance logs\",\"Ambient, idle and recent service records\"],\"checks\":[\"Identify engine and vehicle service condition.\",\"Compare trend with route, load and ambient conditions.\",\"Arrange qualified inspection of cooling equipment after safe shutdown.\"],\"possible\":[\"Airflow restriction\",\"Cooling-system loss\",\"High duty or temperature sensing difference\"],\"capture\":[\"Vehicle and engine ID\",\"Temperature trend, route\/load and ambient conditions\",\"Inspection outcome\"],\"escalate\":\"Stop and escalate sustained overheating or coolant loss according to manufacturer instructions. Never open a hot pressurized cooling system.\",\"keywords\":\"truck fleet radiator overheat traffic hauling\",\"domains\":[\"fleet\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.industrial.compressor_delivery\",\"class_id\":\"4rds.eq.fluid.compressor\",\"title\":\"Compressed-air output below normal\",\"summary\":\"An industrial utility compressor is unable to maintain expected air supply to its consumers.\",\"where\":[\"Compressor controller indications\",\"Distribution pressure trend\",\"Service\/condensate and process demand records\"],\"checks\":[\"Identify compressor unit and pressure-measurement point.\",\"Compare demand, setpoint history and alarms from approved displays.\",\"Arrange authorized inspection of compressor and distribution system under appropriate isolation.\"],\"possible\":[\"Demand or piping loss\",\"Compressor control problem\",\"Instrumentation discrepancy\"],\"capture\":[\"Compressor identity and load state\",\"Air pressure trends and alarms\",\"Maintenance and leakage assessments\"],\"escalate\":\"Escalate pressure vessel, relief valve or other pressure-system concerns. Do not defeat pressure protections.\",\"keywords\":\"industrial air compressor low pressure supply\",\"domains\":[\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.industrial.electrical_trips\",\"class_id\":\"4rds.eq.electrical.switchgear\",\"title\":\"Plant switchgear protection operating unexpectedly\",\"summary\":\"An industrial switchgear assembly records repeated protective events or unexplained load outages.\",\"where\":[\"Protection trip history and approved single-line diagrams\",\"Affected equipment\/feeder load records\",\"Recent electrical or process changes\"],\"checks\":[\"Identify exact protective device and event time.\",\"Review authorized indications without repeatedly energizing the circuit.\",\"Refer diagnosis to qualified electrical and protection personnel.\"],\"possible\":[\"Downstream circuit issue\",\"Load change\",\"Equipment or measurement fault\"],\"capture\":[\"Switchgear and feeder IDs\",\"Trip and load history\",\"Approved electrician assessment\"],\"escalate\":\"Do not access energized equipment or defeat protection. Follow electrical safety clearance and incident rules.\",\"keywords\":\"industrial electrical switchgear breaker trips\",\"domains\":[\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"},{\"id\":\"4rds.guide.industrial.chiller_capacity\",\"class_id\":\"4rds.eq.thermal.chiller\",\"title\":\"Industrial chiller struggling to maintain temperature\",\"summary\":\"A building or industrial cooling plant reports reduced temperature-control performance.\",\"where\":[\"Supply\/return water temperature records\",\"Chiller operational and fault logs\",\"Process or building load and service history\"],\"checks\":[\"Confirm the affected circuit and temperature locations.\",\"Review measured temperatures versus operating load.\",\"Ask qualified refrigeration or plant personnel to inspect the system.\"],\"possible\":[\"Heat-transfer or flow restriction\",\"Load increase\",\"Control or sensor issue\"],\"capture\":[\"Chiller and circuit identity\",\"Temperature trend and operating conditions\",\"Faults and maintenance events\"],\"escalate\":\"Escalate pressure or refrigerant safety concerns and critical cooling loss according to site procedures; do not access refrigerant equipment unqualified.\",\"keywords\":\"industrial chiller cooling capacity temperature\",\"domains\":[\"industrial\"],\"status\":\"research_draft\",\"diagnosis\":\"not_determined\",\"guide_scope\":\"industry_specific\",\"engineering_review\":\"pending\"}],\"industries\":[{\"id\":\"marine\",\"label\":\"Marine & Inland Waterways\",\"summary\":\"Towboats, workboats, propulsion, power and onboard auxiliaries\",\"short_label\":\"Marine\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.marine_motion.propeller\",\"4rds.eq.marine_motion.rudder\",\"4rds.eq.marine_motion.shaft_seal\",\"4rds.eq.marine_motion.steering_actuator\",\"4rds.eq.marine_motion.thruster\",\"4rds.eq.platform.marine.other_vessel\",\"4rds.eq.platform.marine.towboat\",\"4rds.eq.platform.marine.workboat\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.structure.hull\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"marine\",\"status\":\"research_overlay\"},{\"id\":\"rail\",\"label\":\"Freight Rail\",\"summary\":\"Locomotives, freight equipment, traction and onboard 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Rail & Metro\",\"summary\":\"Subway, light-rail and passenger-vehicle systems\",\"short_label\":\"Transit\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.platform.rail.electric_locomotive\",\"4rds.eq.platform.rail.passenger_car\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.rail_motion.brake_actuator\",\"4rds.eq.rail_motion.brake_compressor\",\"4rds.eq.rail_motion.suspension_unit\",\"4rds.eq.rail_motion.traction_gear_drive\",\"4rds.eq.rail_motion.traction_motor\",\"4rds.eq.rail_motion.truck_bogie\",\"4rds.eq.rail_motion.wheelset\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.structure.rail_vehicle_frame\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"rail\",\"status\":\"research_overlay\"},{\"id\":\"offshore\",\"label\":\"Offshore & Marine Energy\",\"summary\":\"Offshore equipment, utilities, rotating machinery and deck hydraulics\",\"short_label\":\"Offshore\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.marine_motion.propeller\",\"4rds.eq.marine_motion.shaft_seal\",\"4rds.eq.marine_motion.steering_actuator\",\"4rds.eq.marine_motion.thruster\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"oilgas\",\"label\":\"Oil, Gas & Petrochemical\",\"summary\":\"Production, gathering, refining and process machinery\",\"short_label\":\"Oil & Gas\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"power\",\"label\":\"Electric Power & Utilities\",\"summary\":\"Generation equipment, electrical distribution and plant auxiliaries\",\"short_label\":\"Power\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"manufacturing\",\"label\":\"Manufacturing & Processing\",\"summary\":\"Production lines, motors, compressed air and utilities\",\"short_label\":\"Manufacturing\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"mining\",\"label\":\"Mining & Aggregates\",\"summary\":\"Mobile machinery and fixed-process equipment\",\"short_label\":\"Mining\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"construction\",\"label\":\"Construction Equipment\",\"summary\":\"Earthmoving machines and hydraulic work systems\",\"short_label\":\"Construction\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"water\",\"label\":\"Water & Wastewater\",\"summary\":\"Pumps, treatment equipment, controls and utility machinery\",\"short_label\":\"Water\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"ports\",\"label\":\"Ports & Material Handling\",\"summary\":\"Terminal machinery, power systems and cargo-handling auxiliaries\",\"short_label\":\"Ports\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.marine_motion.shaft_seal\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"fleet\",\"label\":\"Commercial Fleets & Trucking\",\"summary\":\"Road vehicles, driveline systems and service equipment\",\"short_label\":\"Fleet\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"},{\"id\":\"industrial\",\"label\":\"General Industrial\",\"summary\":\"Shared industrial machinery and equipment types\",\"short_label\":\"General\",\"class_ids\":[\"4rds.eq.auxiliary.air_dryer\",\"4rds.eq.auxiliary.engine_mount\",\"4rds.eq.auxiliary.fire_suppression_unit\",\"4rds.eq.auxiliary.fuel_treatment_unit\",\"4rds.eq.auxiliary.hvac_unit\",\"4rds.eq.auxiliary.lubricant_conditioner\",\"4rds.eq.controls.communications_module\",\"4rds.eq.controls.control_unit\",\"4rds.eq.controls.data_gateway\",\"4rds.eq.controls.position_actuator\",\"4rds.eq.controls.sensor\",\"4rds.eq.electrical.alternator\",\"4rds.eq.electrical.aux_power_supply\",\"4rds.eq.electrical.generator_set\",\"4rds.eq.electrical.inverter\",\"4rds.eq.electrical.rectifier\",\"4rds.eq.electrical.switchgear\",\"4rds.eq.electrical.transformer\",\"4rds.eq.fluid.compressor\",\"4rds.eq.fluid.control_valve\",\"4rds.eq.fluid.filter_assembly\",\"4rds.eq.fluid.fuel_injector\",\"4rds.eq.fluid.hydraulic_power_unit\",\"4rds.eq.fluid.piping_section\",\"4rds.eq.fluid.pump\",\"4rds.eq.fluid.reservoir\",\"4rds.eq.power_source.battery_pack\",\"4rds.eq.power_source.diesel_engine\",\"4rds.eq.power_source.electric_motor\",\"4rds.eq.power_source.fuel_cell_module\",\"4rds.eq.power_source.gas_engine\",\"4rds.eq.power_source.gas_turbine\",\"4rds.eq.power_transfer.axle_gear\",\"4rds.eq.power_transfer.bearing_assembly\",\"4rds.eq.power_transfer.clutch\",\"4rds.eq.power_transfer.coupling\",\"4rds.eq.power_transfer.driveshaft\",\"4rds.eq.power_transfer.reduction_gear\",\"4rds.eq.power_transfer.reversing_gear\",\"4rds.eq.structure.equipment_enclosure\",\"4rds.eq.thermal.chiller\",\"4rds.eq.thermal.cooling_fan\",\"4rds.eq.thermal.heat_exchanger\",\"4rds.eq.thermal.radiator\"],\"base_applicability\":\"industrial\",\"status\":\"research_overlay\"}],\"industry_coverage_note\":\"Industry overlays are draft application mappings; a shared equipment class does not imply the sector taxonomy or site hazards are comprehensively covered.\"}; \/\/ independently authored 4RDS class definitions, roles and guide prompts\nconst cls=DATA.classes, roles=DATA.roles, guides=DATA.guides, industries=DATA.industries;\nconst byId=new Map(cls.map(c=>[c.class_id,c]));\nconst byIndustry=new Map(industries.map(i=>[i.id,{...i,classSet:new Set(i.class_ids)}]));\nconst roleCompatible=r=>r.compatible_class_ids.split(';').map(x=>x.trim()).filter(Boolean);\nconst sector=(id)=>byIndustry.get(id)||byIndustry.get('industrial');\nfunction guideMatches(g,s){return s.classSet.has(g.class_id)&&(g.domains.includes(s.id)||g.domains.includes(s.base_applicability));}\nfunction specificGuide(g,id){return g.domains.includes(id)&&(!!g.guide_scope||g.domains.length===1);}\nconst state={tab:'guide',domain:'marine',classId:'4rds.eq.power_source.diesel_engine',guideId:'4rds.guide.diesel_engine.wear_metals',q:'',dictQ:'',dictDomain:'all',dictMode:'classes',asset:'',notes:'',checked:new Set()};\nconst $=s=>root.querySelector(s);\nconst esc=s=>String(s==null?'':s).replace(\/[&<>\"']\/g,x=>({'&':'&amp;','<':'&lt;','>':'&gt;','\"':'&quot;',\"'\":'&#39;'}[x]));\nconst domainOk=(item,domain)=>{if(domain==='all')return true;const s=sector(domain);if(item.class_id)return s.classSet.has(item.class_id);if(item.role_id)return (item.domain==='shared'||item.domain===s.base_applicability)&&roleCompatible(item).some(id=>s.classSet.has(id));return false;};\nfunction filteredGuides(){const s=sector(state.domain);return guides.filter(g=>guideMatches(g,s)).sort((a,b)=>Number(specificGuide(b,s.id))-Number(specificGuide(a,s.id))||a.title.localeCompare(b.title));}\nfunction classOptions(){const ids=[...new Set(filteredGuides().map(g=>g.class_id))];return ids.map(id=>byId.get(id)).filter(Boolean);}\nfunction chosen(){return guides.find(g=>g.id===state.guideId&&g.class_id===state.classId)||null;}\nfunction setGuide(g){if(!g)return;state.domain=guideMatches(g,sector(state.domain))?state.domain:(industries.find(x=>guideMatches(g,sector(x.id)))?.id||'marine');state.classId=g.class_id;state.guideId=g.id;state.checked.clear();state.asset='';state.notes='';state.q='';$('#r-guide-query').value='';renderGuide();}\nfunction renderTabs(){root.querySelectorAll('[data-action=\"tab\"]').forEach(el=>el.setAttribute('aria-selected',String(el.dataset.value===state.tab)));$('#r-guided').hidden=state.tab!=='guide';$('#r-dictionary').hidden=state.tab!=='dictionary';}\nfunction renderControls(){const s=sector(state.domain);\n$('[data-out=\"domains\"]').innerHTML=industries.map(i=>`<button type=\"button\" aria-pressed=\"${i.id===state.domain}\" data-action=\"domain\" data-value=\"${esc(i.id)}\" title=\"${esc(i.summary)}\">${esc(i.label)}<\/button>`).join('');\nconst available=filteredGuides(), authored=available.filter(g=>specificGuide(g,s.id)).length;\n$('#r-industry-note').innerHTML=`<span>${esc(s.short_label)}<\/span><span>${esc(s.summary)} \u00b7 ${available.length} available checks (${authored} sector-specific). The other paths use shared equipment guidance; this is not a complete sector safety manual.<\/span>`;\nconst cc=classOptions();if(!cc.some(c=>c.class_id===state.classId)){state.classId=cc[0]?.class_id||'';state.guideId='';}\n$('#r-guide-class').innerHTML=cc.map(c=>`<option value=\"${esc(c.class_id)}\">${esc(c.label)}<\/option>`).join('');$('#r-guide-class').value=state.classId;\nconst gg=available.filter(g=>g.class_id===state.classId);if(!gg.some(g=>g.id===state.guideId)){state.guideId=gg[0]?.id||'';state.checked.clear();}\n$('#r-guide-symptom').innerHTML=gg.map(g=>`<option value=\"${esc(g.id)}\">${esc(g.title)}${specificGuide(g,s.id)?' \u00b7 Sector-specific':''}<\/option>`).join('');$('#r-guide-symptom').value=state.guideId;\nconst picks=available.filter(g=>specificGuide(g,s.id)).slice(0,4).length?available.filter(g=>specificGuide(g,s.id)).slice(0,4):available.slice(0,4);\n$('#r-quick-picks').innerHTML=picks.map(g=>`<button type=\"button\" class=\"r-pick\" data-action=\"open-guide\" data-value=\"${esc(g.id)}\">${esc(g.title)}<\/button>`).join('');\n}\nfunction renderSearch(){const target=$('#r-search-matches');const q=state.q.trim().toLowerCase();if(!q){target.innerHTML='';return;}const skip=new Set(['a','an','and','are','at','for','has','have','i','in','is','it','my','of','on','or','the','to','with']);const terms=q.split(\/[^a-z0-9]+\/).filter(w=>w&&!skip.has(w)).map(w=>w==='whining'?'whine':w);const match=filteredGuides().filter(g=>{const body=[g.title,g.summary,g.keywords,byId.get(g.class_id)?.label].join(' ').toLowerCase();return terms.length&&terms.every(w=>body.includes(w));}).slice(0,8);target.innerHTML=match.length?match.map(g=>`<button type=\"button\" class=\"r-match\" data-action=\"open-guide\" data-value=\"${esc(g.id)}\"><strong>${esc(g.title)}<\/strong><small>${esc(byId.get(g.class_id)?.label||'')}<\/small><\/button>`).join(''):`<p class=\"r-fine\">No matching guide in the current domain. Try a shorter phrase or select another industry.<\/p>`;}\nfunction list(items){return '<ul>'+items.map(s=>'<li>'+esc(s)+'<\/li>').join('')+'<\/ul>';}\nfunction checks(items){return items.map((s,i)=>`<label class=\"r-check\"><input type=\"checkbox\" data-check=\"${i}\" ${state.checked.has(i)?'checked':''}><span>${esc(s)}<\/span><\/label>`).join('');}\nfunction renderResult(){const g=chosen();const t=$('#r-result');if(!g){t.innerHTML='<p class=\"r-empty\">Select an equipment class and symptom to begin.<\/p>';return;}const c=byId.get(g.class_id);const compat=roles.filter(r=>r.compatible_class_ids.split(';').map(x=>x.trim()).includes(g.class_id)&&(r.domain===sector(state.domain).base_applicability||r.domain==='shared')).slice(0,2);t.innerHTML=`\n<div class=\"r-crumb\">${esc(sector(state.domain).label)} \/ ${esc(c.family_id.split('.').slice(-1)[0].replace(\/_\/g,' '))} \/ guided check<\/div>\n<h3>${esc(g.title)}<\/h3><p class=\"r-summary\">${esc(g.summary)}<\/p>\n<div class=\"r-identity\"><span class=\"r-tag\">${esc(c.label)}<\/span><span class=\"r-code\">${esc(c.class_id)}<\/span><span class=\"r-scope\">${specificGuide(g,state.domain)?'Industry-specific first check':'Shared equipment guide'}<\/span><\/div>\n<div class=\"r-grid\"><section class=\"r-panel r-review\"><span class=\"r-micro\">Step A \u00b7 Location<\/span><h4>Where to look<\/h4>${list(g.where)}<\/section><section class=\"r-panel r-review\"><span class=\"r-micro\">Step B \u00b7 Inspection prompts<\/span><h4>What to check<\/h4>${checks(g.checks)}<\/section><section class=\"r-panel r-possible\"><span class=\"r-micro\">Step C \u00b7 Not confirmed<\/span><h4>What could explain it<\/h4>${list(g.possible)}<p style=\"margin-top:11px\">These are investigation possibilities, not a diagnosis or probability ranking.<\/p><\/section><section class=\"r-panel r-evidence\"><span class=\"r-micro\">Step D \u00b7 Record facts<\/span><h4>What to document<\/h4>${list(g.capture)}<\/section><\/div>\n<div class=\"r-panel r-stop\" style=\"margin-top:12px\"><span class=\"r-micro\">Safety and escalation<\/span><h4>When to stop and escalate<\/h4><p class=\"r-stopline\">${esc(g.escalate)}<\/p><\/div>\n<div class=\"r-field-notes\"><div><label class=\"r-label\" for=\"r-field-asset\">Asset label (optional)<\/label><input class=\"r-input\" id=\"r-field-asset\" type=\"text\" maxlength=\"160\" placeholder=\"e.g. STBD ME \/ Unit 204\" value=\"${esc(state.asset)}\"><\/div><div><label class=\"r-label\" for=\"r-field-notes\">What did you actually observe? (optional)<\/label><textarea class=\"r-textarea\" id=\"r-field-notes\" maxlength=\"3000\" placeholder=\"Facts, times, readings, and where they came from...\">${esc(state.notes)}<\/textarea><\/div><\/div>\n<div class=\"r-actions\"><button type=\"button\" class=\"r-btn r-primary\" data-action=\"copy\">Copy field worksheet<\/button><button type=\"button\" class=\"r-btn\" data-action=\"download\">Export JSON<\/button><button type=\"button\" class=\"r-btn\" data-action=\"print\">Print guide<\/button><button type=\"button\" class=\"r-btn\" data-action=\"show-class\">View class definition<\/button><\/div><p class=\"r-status\" id=\"r-action-status\" role=\"status\"><\/p>\n<p class=\"r-fine\" style=\"margin-top:9px\">Research draft. This worksheet does not confirm a cause, create a maintenance authorization, or save data to a server. ${compat.length?'Relevant candidate roles: '+esc(compat.map(r=>r.label).join(' \u00b7 '))+'.':''}<\/p>`;}\nfunction renderGuide(){renderTabs();renderControls();renderResult();renderSearch();}\nfunction renderDictionary(){root.querySelectorAll('[data-action=\"dict-mode\"]').forEach(x=>x.setAttribute('aria-pressed',String(x.dataset.value===state.dictMode)));let entries=state.dictMode==='classes'?cls:roles;entries=entries.filter(x=>domainOk(x,state.dictDomain));const q=state.dictQ.trim().toLowerCase();if(q)entries=entries.filter(x=>[x.label,x.definition,x.class_id,x.role_id,x.family_id,x.inclusion_criteria,x.exclusion_criteria].join(' ').toLowerCase().includes(q));$('#r-dict-count').textContent=`Showing ${entries.length} of ${state.dictMode==='classes'?cls.length:roles.length} ${state.dictMode==='classes'?'equipment classes':'functional roles'} \u00b7 Industry applicability is a draft overlay; all definitions remain candidates.`;const target=$('#r-catalog');if(!entries.length){target.innerHTML='<p class=\"r-empty\">No dictionary entries match. Try another term or domain.<\/p>';return;}target.innerHTML=entries.map(e=>{if(state.dictMode==='classes'){const matched=roles.filter(r=>r.compatible_class_ids.split(';').map(x=>x.trim()).includes(e.class_id)).slice(0,4);return `<article class=\"r-catalog-entry\"><span class=\"r-tax\">${esc(e.family_id.replace('4rds.eq.','').replace(\/_\/g,' '))} \u00b7 ${esc(e.applies_to)}<\/span><h3>${esc(e.label)}<\/h3><p>${esc(e.definition)}<\/p><code class=\"r-code\">${esc(e.class_id)}<\/code><details><summary>Classification boundary & roles<\/summary><p class=\"r-dict-detail\"><strong>Include:<\/strong> ${esc(e.inclusion_criteria)}<\/p><p class=\"r-dict-detail\"><strong>Exclude:<\/strong> ${esc(e.exclusion_criteria)}<\/p><p class=\"r-dict-detail\"><strong>Example:<\/strong> ${esc(e.positive_example)}<\/p><p class=\"r-dict-detail\"><strong>Candidate roles:<\/strong> ${esc(matched.map(x=>x.label).join('; ')||'Not yet assigned')}<\/p><\/details><\/article>`;}return `<article class=\"r-catalog-entry\"><span class=\"r-tax\">Functional role \u00b7 ${esc(e.domain)}<\/span><h3>${esc(e.label)}<\/h3><p>${esc(e.definition)}<\/p><code class=\"r-code\">${esc(e.role_id)}<\/code><details><summary>Compatible equipment & boundary<\/summary><p class=\"r-dict-detail\"><strong>Compatible classes:<\/strong> ${esc(e.compatible_class_ids.split(';').map(x=>byId.get(x.trim())?.label||x.trim()).join('; '))}<\/p><p class=\"r-dict-detail\"><strong>Boundary:<\/strong> ${esc(e.boundary_note)}<\/p><\/details><\/article>`;}).join('');}\nfunction worksheet(){const g=chosen(),c=g&&byId.get(g.class_id);return {standard:'4RDS Field Guide',version:DATA.version,record_type:'observational_field_worksheet',draft:true,exported_at:new Date().toISOString(),industry:state.domain,industry_label:sector(state.domain).label,guide_scope:specificGuide(g,state.domain)?'industry_specific':'shared_equipment',asset_label:state.asset||null,equipment_class_id:c?.class_id||null,equipment_label:c?.label||null,guide_id:g?.id||null,reported_symptom:g?.title||null,observation_notes:state.notes||null,completed_prompt_indexes:Array.from(state.checked).sort((a,b)=>a-b),completed_prompt_text:g?Array.from(state.checked).sort((a,b)=>a-b).map(i=>g.checks[i]):[],cause_status:'not_determined',inspection_guidance_not_a_diagnosis:true,developer_note:'Local worksheet export only; not a validated event record or maintenance authorization.'};}\nfunction plainWorksheet(){const w=worksheet(),g=chosen();return ['4RDS FIELD REFERENCE v0.2 | WORKSHEET (DRAFT)','Industry: '+w.industry_label,'Equipment: '+w.equipment_label,'Equipment ID: '+w.equipment_class_id,'Asset label: '+(w.asset_label||'Not entered'),'Observation: '+w.reported_symptom,'','WHERE TO LOOK',...g.where.map((x,i)=>`${i+1}. ${x}`),'','CHECK PROMPTS',...g.checks.map((x,i)=>`${w.completed_prompt_indexes.includes(i)?'[x]':'[ ]'} ${x}`),'','POSSIBLE EXPLANATIONS (NOT CONFIRMED)',...g.possible.map(x=>'\u2022 '+x),'','EVIDENCE TO COLLECT',...g.capture.map(x=>'\u2022 '+x),'','ESCALATION',''+g.escalate,'','OBSERVED FACTS',w.observation_notes||'(not entered)','','Cause status: NOT DETERMINED. Follow OEM and site safety procedures.'].join('\\n');}\nfunction notify(x){const el=$('#r-action-status');if(el)el.textContent=x;}\nroot.addEventListener('click',async ev=>{const b=ev.target.closest('[data-action]');if(!b||!root.contains(b))return;const a=b.dataset.action,v=b.dataset.value;\nif(a==='tab'){state.tab=v;renderTabs();if(v==='dictionary')renderDictionary();return;}\nif(a==='domain'){state.domain=v;state.classId='';state.guideId='';state.q='';$('#r-guide-query').value='';state.checked.clear();state.asset='';state.notes='';renderGuide();return;}\nif(a==='open-guide'){setGuide(guides.find(g=>g.id===v));return;}\nif(a==='dict-mode'){state.dictMode=v;renderDictionary();return;}\nif(a==='show-class'){state.tab='dictionary';state.dictMode='classes';state.dictDomain='all';const 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class=\"fa-footer-brand-line\">Technologies, LLC<\/div>\r\n                <img decoding=\"async\" src=\"https:\/\/4atmos.com\/wp-content\/uploads\/2026\/04\/CRC_Member_Logo_Black.png\" alt=\"Proud Member of the Commuter Rail Coalition\" class=\"fa-footer-crc\">\r\n                <div class=\"fa-footer-brand-sub\">Let\u2019s Make Smart Solutions<\/div>\r\n            <\/div>\r\n\r\n            <div class=\"fa-footer-col fa-footer-direct\">\r\n                <p>For partnership, program, and operational inquiries, contact us directly.<\/p>\r\n                <p><a class=\"fa-footer-cta\" href=\"\/contact-us\/\">Contact 4Atmos<\/a><\/p>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"fa-footer-bottom\">\r\n            <nav class=\"fa-footer-nav\" aria-label=\"Footer\">\r\n                <a href=\"\/\">Home<\/a>\r\n                <a href=\"\/about-us\/\">About Us<\/a>\r\n                <a href=\"\/real-world-success\/\">Real World Success<\/a>\r\n                <a href=\"\/4atmos-insights\/\">4Atmos Insights<\/a>\r\n                <a href=\"\/why-4atmos\/\">Why 4Atmos?<\/a>\r\n                <a href=\"\/Reliability-Hub\/\">RCA\/RCM Support<\/a>\r\n                <a href=\"\/roi\/\">ROI<\/a>\r\n                <a href=\"\/federal-compliance\/\">Federal Compliance<\/a>\r\n                <a href=\"\/contact-us\/\">Contact Us<\/a>\r\n            <\/nav>\r\n\r\n            <div class=\"fa-footer-social\">\r\n                <a href=\"https:\/\/www.linkedin.com\/in\/michaeljensen67\" target=\"_blank\" rel=\"noopener noreferrer\">LinkedIn<\/a>\r\n            <\/div>\r\n\r\n            <div class=\"fa-footer-copy\">\r\n                \u00a9 2013-2026 4Atmos Technologies, LLC. All Rights Reserved\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/footer>\r\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home Why 4Atmos? Real World Success 4Atmos Insights RCA\/RCM Support ROI Federal Compliance About Us Contact Us 4RDS | Purpose Understand the equipment. Identify the problem. Know where to look. Effective troubleshooting starts with understanding what you&#8217;re working on, recognizing what has changed, and knowing where to begin investigating. 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