fire extinguisher
Enable an AI agent to recognise a fire extinguisher, assess its documented suitability and readiness, and identify permitted handling, inspection or service actions without treating uncertain equipment as safe to use.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex
Purpose and description
Enable an AI agent to recognise a fire extinguisher, assess its documented suitability and readiness, and identify permitted handling, inspection or service actions without treating uncertain equipment as safe to use.
It can be Identify the unit and retrieve its applicable operating and service documentation.; Compare documented ratings and restrictions with an externally supplied hazard assessment.; Record non-invasive inspection observations and flag missing or conflicting readiness evidence.; Locate the unit and assess whether its mounting, visibility or access needs attention.; Determine whether use, movement or service is permitted under documented conditions and actor competence.; Initiate authorised service, replacement or retirement workflows and record the resulting disposition..
Distinguishing features
The device is identified by its markings or supporting documentation as a fire extinguisher; a pressurised cylinder alone is insufficient evidence.
It carries an extinguishing medium and an integrated discharge arrangement, distinguishing it from a fire blanket or an empty storage container.
Its intended operation is as a discrete portable or wheeled unit, distinguishing it from a fixed suppression system nozzle or supply cylinder.
Its documented purpose is fire suppression, distinguishing it from a similar-looking garden sprayer, compressed-gas cylinder or cleaning applicator.
An empty or condemned extinguisher retains its equipment identity while its readiness changes; appearance alone does not establish serviceability.
Scope
+ Identification of the extinguisher and its labelled agent, capacity and ratings
+ Discharge mechanism, controls and safety devices
+ Physical condition, charge evidence and readiness assessment
+ Placement, accessibility and mounting
+ Inspection, service history and restrictions on use or return to service
- Fire detection, alarm and building evacuation systems
- Fixed fire suppression installations and their distribution networks
- Building fire risk assessments and extinguisher coverage planning
- Responder competence, training and personal protective equipment
- Fire incident command, firefighting tactics and evacuation decisions
Characteristics
- Equipment identity
- Manufacturer, model and serial or asset identifier; unknown where unverified Connects the physical unit to the correct instructions, ratings and service records.
- Mobility form
- Hand-portable, wheeled, other documented form, unresolved Determines handling assumptions and helps establish the boundary with fixed equipment.
- Extinguishing medium
- Exact label or manufacturer designation; unknown Supports interpretation of documented fire suitability and restrictions.
- Nominal agent charge
- Labelled mass in kg or volume in L, preserving the original unit Records intended contents without confusing agent charge with total equipment mass.
- Fire performance rating
- Exact rating notation with issuing standard, jurisdiction and edition where known Prevents ratings from different classification systems being treated as equivalent.
- Expulsion mechanism
- Manufacturer-described mechanism, such as stored pressure or cartridge operation; unknown Determines which condition indicators and service instructions apply.
- Charge evidence
- Recorded indicator reading or approved measurement, method, date and interpretation; unavailable or inconclusive Separates evidence of charge from an unsupported declaration of readiness.
- Physical integrity
- Observed condition of vessel, valve, discharge path and safety devices; defects or unknowns recorded separately Exposes defects that may restrict handling or use even when charge appears acceptable.
- Deployment location
- Link to installed location, mounting arrangement and assigned coverage assessment Connects the unit to accessibility observations and externally determined placement requirements.
- Service eligibility
- Rechargeable, non-rechargeable or unresolved, according to applicable documentation Constrains what may happen after discharge or a failed assessment.
- Readiness disposition
- Unassessed, assessed ready, restricted, out of service or retired; with basis, assessor and assessment date Provides a traceable decision rather than inferring readiness from one indicator.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 10 layers · 10 findings · 21 questions.
Identity and rating Establishes which extinguisher is present and how its declared capabilities must be interpreted.
Similar-looking extinguishers can have different contents, ratings and instructions.
Unit identification
Connects physical markings to a specific equipment model and individual unit.
Traceable extinguisher identity
Record the evidence identifying the unit as an extinguisher and linking it to manufacturer documentation.
- Which markings establish the manufacturer, model and individual unit identifier? definition
- Which documentation matches this unit, and are any markings missing, illegible or inconsistent? provenance
Rating interpretation
Preserves the meaning and authority of capability markings.
Declared fire capability
Record exact fire ratings and their classification context without translating them into unsupported equivalences.
- What exact fire class and performance markings appear on the unit? definition
- Which standard or certification system defines those markings, and what evidence establishes its applicability? provenance
Agent and hazard compatibility Describes the contents and the documented limits on where they may be applied.
An extinguisher's suitability depends on its specific medium and documented restrictions, not just its presence.
Agent charge
Identifies the specified extinguishing medium and nominal quantity.
Specified extinguishing contents
Separate the declared contents from evidence about what is currently inside the unit.
- What medium designation and nominal charge quantity are specified for this model? definition
- What label, manufacturing or service evidence supports the identity of the current contents? provenance
Application restrictions
Connects documented capability to the hazards and environmental constraints supplied by neighbouring models.
Documented suitability boundaries
Record supported applications, exclusions and unresolved compatibility questions.
- What restrictions do the applicable instructions state for electrical equipment, materials, occupied spaces or environmental conditions? boundary
- Does the supplied hazard assessment fall within the documented capability, or is further assessment required? boundary
Discharge and readiness Captures the condition of the discharge assembly and evidence supporting operational readiness.
Charge indication, mechanical integrity and discharge history must be considered together.
Discharge assembly
Identifies the model-specific controls, safeguards and discharge path.
Discharge path condition
Record the presence and observed condition of required controls, safety devices, hose, horn or nozzle as applicable.
- Which controls, safety devices and discharge components are required by this model's documentation? definition
- What visible damage, obstruction, missing component or evidence of tampering affects those parts? measurement
Readiness evidence
Combines applicable charge checks, integrity observations and use history into a qualified assessment.
Supported readiness assessment
Record the assessment basis and unresolved evidence without assuming every extinguisher has a pressure gauge.
- Which charge assessment method applies to this model, and what dated reading or result is available? measurement
- What discharge history, leakage, vessel damage or other unresolved condition affects the assessment? measurement
- Who may assign its readiness disposition, and what evidence supports that decision? action
Placement and access Records where the extinguisher is deployed and whether it can be found and retrieved as intended.
A serviceable extinguisher may still be unavailable because of obstruction, unsuitable mounting or exposure.
Deployment position
Links the physical unit to its location and assigned role in an external coverage plan.
Assigned extinguisher location
Distinguish the observed location from the location required by the responsible assessment.
- Where is the unit currently located, and when was that location verified? measurement
- Which coverage assessment or placement instruction assigns this unit to that location? provenance
Retrieval and exposure
Captures obstacles to retrieval and conditions affecting the installed unit.
Accessible and protected installation
Record visibility, access, mounting condition and environmental exposure against applicable requirements.
- What obstructions, enclosure conditions or mounting defects affect finding and retrieving the unit? measurement
- Are the observed temperature and exposure conditions within the documented installation limits? boundary
Service and disposition Tracks applicable maintenance obligations and the authority for changing service status.
Inspection, recharge, testing and retirement depend on the particular equipment and governing requirements.
Maintenance basis
Connects completed and pending service activities to their applicable requirements.
Traceable service obligations
Record service evidence and due activities without assuming universal maintenance intervals.
- Which manufacturer instructions and jurisdictional requirements establish the applicable inspection, maintenance and testing activities? provenance
- What records establish completed work, its outcome and the basis for the next required activity? provenance
Permitted status transitions
Controls decisions following discharge, defects, failed checks or end-of-service determinations.
Authorised service disposition
Record whether the unit may remain available, requires service or replacement, or has been retired.
- Given the unit's condition and documented service eligibility, which next actions are permitted and who is qualified to perform them? action
- What evidence and authorisation are required before this individual unit can return to service? action
What the second pass must settle
- Does the registry intend this entry to include wheeled extinguishers, aerosol extinguishing devices and specialist portable units, or do existing neighbouring entries own some of these forms?
- Which existing Vercy world model, if any, already owns this concept and should remain its single source of truth?
- Which jurisdictions and rating systems must be supported, and how should their non-equivalent markings be represented?
- Which manufacturer-specific methods and acceptance criteria establish charge and readiness for each supported extinguisher type?
- Which actors may assess readiness, perform service and authorise return to service under the applicable operating context?