Inspection and Investigation
Inspection and investigation covers fire inspections, code enforcement, fire cause determination, evidence preservation, and pre-incident planning. NFPA 1021, NFPA 1, NFPA 101, NFPA 921, and NFPA 1033 supply the technical frame.
Core rules
- Inspections verify compliance with the adopted fire code and referenced standards; identify occupancy classification, means of egress, fire protection systems, storage, and housekeeping.
- Document conditions objectively, photograph, cite the code section, set a reinspection date, and follow the department's enforcement ladder: notice, citation, abatement, legal referral.
- Entry generally requires consent, a warrant, or a lawful exception such as exigent circumstances; know your state law and department policy.
- Fire cause determination uses the scientific method from NFPA 921: define the problem, collect data, analyze, develop hypotheses, test, and select the best-supported cause.
- Preserve the scene: control access, avoid overhaul damage before examination, maintain chain of custody, and call a qualified investigator when the cause is not obvious or is suspicious.
Worked example
At a restaurant fire, the officer sees fire damage concentrated at a deep fryer and a clean burn pattern on the floor. Rather than declaring a grease fire, the officer secures the area, stops overhaul near the appliance, photographs, and requests an investigator. Reasoning: the area of origin is not the cause; NFPA 921 requires testing hypotheses, and evidence can be destroyed by overhaul.
Traps
Do not confuse area of origin with cause, assume the obvious, exceed inspection authority, or fail to document a hazard because the owner promises to fix it.