FDNY COF For Flammable-Refrigerant Refrigeration Systems (B28) Practice Test

Hydrocarbon refrigerants introduce both a flammable vapor hazard and potential pressurized containers, so responders must treat the incident as a hazardous materials/occupational safety situation. That means establishing appropriate protection for responders, using procedures and PPE suited to hazmat incidents, and working to control ignition sources while assessing the specific refrigerant involved. The best approach is to follow hazMat/occup safety protocols, choose extinguishing agents that are effective for hydrocarbon fires (to cool and smother the release without spreading the flame), and ventilate the area to remove and dilute flammable vapors. Venting helps prevent vapor buildup that could ignite and also creates safer conditions for suppression activities and for any occupants or responders near the scene. Coordination with hazmat teams and careful monitoring are essential during venting and suppression. Treating it as a standard fire ignores the added flammable refrigerant hazard. Ventilating alone doesn’t address suppression or containment of the potential ignition sources. Evacuating without attempting suppression leaves the fire and vapor release uncontained, increasing risk to people and exposures.