{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.chimney-fire","code":"thing-q1427321","url":"https://ver.cy/models/thing/q1427321/","name":"chimney fire","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Activities and processes","entryKind":"thing","plane":"ACT","domain":["ACT.EVT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A chimney fire is the unintended combustion of accumulated combustible deposits, usually soot or creosote, or other combustible material within a chimney or flue.","purpose":"Enable an AI agent to recognise a reported chimney fire, track its extent and uncertainty, and identify the evidence and authority needed for response, inspection and return-to-use decisions.","scope":{"in":["Classification of suspected and confirmed combustion within the chimney or flue","Event onset, detection, active burning, apparent cessation and confirmed closure","Involved deposits, flue sections and connected combustion appliances","Evidence of damage or fire spread beyond the chimney","Incident response, inspection findings and return-to-use decisions"],"out":["The chimney's complete design, construction and maintenance record","Routine intended combustion within a fireplace or appliance","The full building-fire incident beyond its relationship to the chimney fire","Clinical assessment and treatment of smoke exposure or injury","General appliance certification, installation rules and insurance adjudication"],"boundaries":[]},"distinguishingFeatures":["The defining event is unintended combustion within the chimney or flue; a chimney carrying hot gases from normal appliance operation is insufficient.","A report of smoke, unusual sound or heat supports investigation but does not by itself establish that combustion occurred inside the chimney.","A blockage or poor draught can affect the same assembly without constituting a chimney fire unless combustion is also established.","Fire involving nearby roof or framing is recorded as spread from the chimney only where evidence supports that relationship; proximity alone does not establish origin.","The event is distinct from residual damage found during inspection: such damage may support an earlier chimney-fire hypothesis without establishing its date."],"structure":{"bundles":[{"id":"recognition-and-evidence","name":"Recognition and evidence","description":"Establish whether the reported occurrence qualifies as a chimney fire and what supports that judgement.","layers":[{"id":"combustion-boundary","name":"Combustion boundary","description":"Locate unintended combustion relative to the appliance, flue and surrounding construction.","findings":[{"id":"evidence-of-internal-burning","name":"Evidence of internal burning","description":"Record the basis for locating combustion inside the chimney or flue, preserving uncertainty where location is inferred.","questions":[{"text":"What evidence places unintended combustion within the chimney or flue rather than solely in the connected appliance?","id":"evidence-of-internal-burning-q01","kind":"definition"},{"text":"Which observations distinguish the report from smoke escape, blockage or normal discharge?","id":"evidence-of-internal-burning-q02","kind":"boundary"}]}]},{"id":"observation-confidence","name":"Observation confidence","description":"Separate direct observations, instrument records and retrospective interpretations.","findings":[{"id":"traceable-incident-assessment","name":"Traceable incident assessment","description":"Attach each classification to its observer, time, evidence and subsequent revisions.","questions":[{"text":"Who reported or confirmed the chimney fire, and what did they directly observe?","id":"traceable-incident-assessment-q01","kind":"provenance"},{"text":"Which alternative explanation remains plausible, and what evidence would change the classification?","id":"traceable-incident-assessment-q02","kind":"boundary"}]}]}]},{"id":"flue-involvement-and-origin","name":"Flue involvement and origin","description":"Identify the affected passage, connected equipment and proposed ignition circumstances.","layers":[{"id":"affected-flue-path","name":"Affected flue path","description":"Relate the event to identifiable sections of the chimney system.","findings":[{"id":"involved-passage-and-connections","name":"Involved passage and connections","description":"Record which passage and sections are implicated and which appliances connect to them.","questions":[{"text":"Which flue passage and vertical or connecting sections are known or suspected to have been involved?","id":"involved-passage-and-connections-q01","kind":"boundary"},{"text":"Which appliances connect to that passage, and what evidence establishes their operating state at the relevant time?","id":"involved-passage-and-connections-q02","kind":"provenance"}]}]},{"id":"fuel-and-ignition-account","name":"Fuel and ignition account","description":"Keep material identification separate from causal attribution.","findings":[{"id":"supported-origin-hypothesis","name":"Supported origin hypothesis","description":"Represent proposed burning material and ignition mechanisms as sourced assessments rather than assumed causes.","questions":[{"text":"What material was identified as burning, and was that identification observed, sampled or inferred after the event?","id":"supported-origin-hypothesis-q01","kind":"provenance"},{"text":"Who attributes ignition to which conditions, and what competing account or missing evidence limits that attribution?","id":"supported-origin-hypothesis-q02","kind":"provenance"}]}]}]},{"id":"progression-and-extension","name":"Progression and extension","description":"Track the timing of combustion and its possible effects outside the flue.","layers":[{"id":"incident-time-course","name":"Incident time course","description":"Distinguish estimated onset, first observations and later assessments of burning status.","findings":[{"id":"bounded-burning-timeline","name":"Bounded burning timeline","description":"Record time intervals with source and precision rather than assigning an unsupported single start or end.","questions":[{"text":"What are the earliest and latest supported bounds for onset, and how do they differ from the first detection time?","id":"bounded-burning-timeline-q01","kind":"measurement"},{"text":"When did visible or audible signs cease, and when, by whom and on what basis was extinguishment assessed?","id":"bounded-burning-timeline-q02","kind":"provenance"}]}]},{"id":"containment-and-building-interface","name":"Containment and building interface","description":"Record whether fire effects extend into the chimney assembly or surrounding building.","findings":[{"id":"extension-evidence-and-limits","name":"Extension evidence and limits","description":"Distinguish observed damage, suspected concealed involvement and confirmed fire extension.","questions":[{"text":"What evidence indicates involvement of the liner, chimney enclosure, roof or adjacent framing, and which locations remain unexamined?","id":"extension-evidence-and-limits-q01","kind":"boundary"},{"text":"If a building fire is associated with this event, what evidence establishes the direction of spread or leaves it unresolved?","id":"extension-evidence-and-limits-q02","kind":"provenance"}]}]}]},{"id":"response-and-return-to-use","name":"Response and return to use","description":"Record accountable response decisions and the evidence needed to resolve post-incident use restrictions.","layers":[{"id":"incident-response-account","name":"Incident response account","description":"Connect response actions and state changes to responsible parties and observations.","findings":[{"id":"response-actions-and-handover","name":"Response actions and handover","description":"Record actions taken, reported outcomes and unresolved concerns transferred between responders and subsequent inspectors.","questions":[{"text":"Which authority or responder directed the incident response, and which actions and observed outcomes were recorded?","id":"response-actions-and-handover-q01","kind":"provenance"},{"text":"What unresolved concerns about active burning, concealed extension or chimney damage were included in the handover?","id":"response-actions-and-handover-q02","kind":"action"}]}]},{"id":"post-fire-condition-and-clearance","name":"Post-fire condition and clearance","description":"Separate extinguishment from assessment of the system's condition and suitability for subsequent operation.","findings":[{"id":"documented-use-decision","name":"Documented use decision","description":"Link any return-to-use decision to the inspected components, findings, completed work and responsible decision-maker.","questions":[{"text":"Which flue, chimney and appliance components were examined after the fire, and what damage or inspection limitations were recorded?","id":"documented-use-decision-q01","kind":"boundary"},{"text":"Who may determine return to use in the applicable setting, and what evidence and outstanding conditions support the recorded decision?","id":"documented-use-decision-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-standards-and-regulation","name":"Standards and regulation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these standards and regulation hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-standards-and-regulation-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these regional variation hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of chimney fire this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Advise people who report a chimney fire to leave the building and call emergency services.","Remind households to have chimneys swept and inspected at the intervals local rules set."],"mustNot":["Tell a person to tackle a chimney fire themselves instead of calling the fire service.","Declare a chimney safe to use after a fire without a qualified inspection.","Advise pouring water down a hot flue or other improvised firefighting.","Delay passing on a reported fire to emergency services."],"requiresHuman":["Returning a chimney to use after a fire.","Deciding whether occupants should evacuate when the report is unclear."]},"ethics":{"considerations":["Chimney fires spread into homes and kill people, often in older rural housing.","Low-income households relying on wood or coal heat are most exposed."],"affectedParties":["Occupants","Neighbours","Firefighters"]},"owners":{"steward":"The owner or occupant of the building; the fire service responds and building control sets the rules.","roles":[],"masterSystems":[]},"relations":[{"target":"Q7625093","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.chimney-fire","Wikidata: Q1427321 (https://www.wikidata.org/wiki/Q1427321)"]},"properties":{"applicability":"not-applicable","items":["Incident classification: reported; suspected; confirmed; ruled out; unresolved","Combustion location: Identified chimney, flue passage, section and connection; unknown where unresolved","Material involved: Reported or identified combustible deposits, debris or other material; unknown; attribution source required","Event timing: Timestamp or bounded interval with calendar, time zone, precision and source","Burning status: unknown; suspected active; observed active; apparently ceased; assessed extinguished","Spread assessment: not assessed; no extension identified within stated inspection scope; suspected extension; confirmed extension","Post-incident use status: undetermined; use restricted; inspection pending; remedial work pending; cleared under recorded conditions"]},"recognition":{"applicability":"optional","items":["Flames or dense dark smoke and sparks coming from the top of a chimney.","A loud roaring or popping noise and a hot chimney breast inside."]},"capabilities":{"applicability":"required","items":["Classify a report while retaining competing explanations and evidential uncertainty.","Associate observations with specific flue sections, appliances and observation times.","Construct an incident timeline that distinguishes witnessed events from retrospective estimates.","Link suspected or confirmed spread to a related building-fire event without assuming causation.","Present unresolved incident evidence to the responsible emergency or inspection authority.","Track inspection requirements, remedial findings and documented conditions for return to use."]},"hazards":{"applicability":"required","items":["Fire spreading to roof timbers and the rest of the building.","Cracked flues that let heat and carbon monoxide into rooms.","Burning debris falling onto roofs and surroundings."]},"interfaces":{"applicability":"required","items":["NFPA 211, issued by the National Fire Protection Association, addresses chimneys, fireplaces, vents and solid fuel-burning appliances, including inspection and maintenance relevant to chimney-fire prevention.","EN 1443, issued by the European Committee for Standardization, establishes general chimney requirements and includes classification for resistance to soot fires."]},"context":{"applicability":"required","items":["Chimney fires occur in flues serving fireplaces, stoves and other combustion appliances when accumulated deposits or other combustible material ignite.","The concept is used in emergency reporting, fire investigation and building inspection to distinguish combustion inside the flue from normal appliance operation.","Records of a chimney fire inform assessments of damage and decisions about subsequent use."]}},"sources":[{"title":"Wikidata item Q1427321: chimney fire","url":"https://www.wikidata.org/wiki/Q1427321","note":"identity and sense of the item"},{"title":"Wikipedia: Chimney fire","url":"https://en.wikipedia.org/wiki/Chimney_fire","note":"general description of the item"}],"openQuestions":["Which authoritative definitions include fires involving debris or nesting material within a flue, and how do they distinguish these from deposit fires?","What evidence standards distinguish a suspected chimney fire from a confirmed event, especially when only later damage is available?","How should repeated flare-ups or renewed burning be grouped into one event versus separate incidents?","Which jurisdictional or system-specific requirements govern post-fire inspection and authority to approve return to use?","Which observations can support a finding of no concealed extension, and how should inaccessible areas limit that finding?"],"resources":{"spec":"/models/things/publications/thing-q1427321/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1427321/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T08:37:40Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:26+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane ACT: no invented physical properties."},"score":1.0}}