Commercial vehicle fires require distinct suppression tactics based on the fuel source and location on the vehicle. Match each commercial vehicle fire scenario with its correct primary containment and suppression protocol.
- Engine compartment fire with smoke emanating from under the hoodKeep the hood latched, turn off the engine, and discharge extinguishing agent through the grille louvers or from underneath the vehicle to avoid feeding oxygen to the fire.
- Smoldering rubber fire on a trailer dual-tire assemblyDouse thoroughly with large quantities of water or an approved Class A agent, continuing application until the rubber is fully cooled below re-ignition temperature.
- Dashboard electrical fire with active wiring arcing behind the instrument panelCut main battery power/ignition immediately and apply a non-conductive B:C dry chemical agent into access panels, avoiding all water or conductive liquids.
- Burning diesel fuel pool on the ground beneath a ruptured fuel tankStand upwind at an adequate safety distance, aim the B:C dry chemical nozzle at the base of the burning liquid, and sweep side-to-side across the entire perimeter.
Answer
Engine compartment fire matches discharging through louvers/underneath while keeping the hood latched; dual-tire fire matches thorough dousing with water/Class A agent until fully cooled; dashboard electrical fire matches cutting main power and applying non-conductive B:C agent; diesel pool fire matches aiming B:C dry chemical at the base of the liquid with a sweeping motion upwind.
Each commercial vehicle fire location involves specific materials and hazards: engine fires require containment without introducing oxygen by keeping the hood latched; tire fires involve deep-seated Class A rubber combustion requiring thorough water cooling; electrical fires demand non-conductive suppression after cutting circuit power; and flammable fuel spills require sweeping B:C dry chemical across the liquid base from an upwind position.
Step-by-Step Solution
Key Concept
Commercial Motor Vehicle Fire Suppression Tactics and Extinguisher Application
Estimated Time:1m 30s