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Identify
Isolate
Rescue
Wrap Up
…and, pay attention to the unique items for hydrogen-powered fuel cell electric vehicles
Follow SOPs for vehicle response
IdentifyTypically decals and graphics identifying car as an FCEV Blue diamond sticker on rear- SAE example (no standards, yet)Never assume the vehicle is off
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Identify
Identify
H2 release indicators
Compressed H2
Very loud hissing (almost all leaks will be audible)PRD/TRD release controlled high-pressure hydrogen rapid release through safety vent• Occurs if tanks are exposed to
high-temperature heat (e.g. – fire)Never cut into hydrogen lines
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High-voltage systems
Never cut into high-voltage systems• Designed to quickly dissipate
charge in lines• Charge can be retained when
system is off
Lines are marked orange
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Identify
Isolate
FCEVs are heavier than conventional vehiclesWhen safe, move the conventional vehicle away from the FCEV• Heat from gas fire can trigger TRD/PRD
Spray foam on gasoline or diesel leaks near FCEV• Let hydrogen fed fires burn out if safe to do so
Multiple vehicles and different fuels Isolate
Rescue: extricationAvoid the PRD/TRD vent Stabilize & disableFollow any “Emergency/ Manual Shut Down” procedure Dash roll: Avoid using cutters or spreaders on rocker panel--• Hydrogen and/or high voltage lines
may be present
Rescue
Extrication
Dash roll: for a purchase point on the rocker panel…• Cradle or saddle• Notch the rocker panel
Relief cut OK• Bottom of A post• Between hinges
Avoid cutting throughunderside of vehicle
Rescue
Rescue: fires
Let a hydrogen flame or plume burn• Fire will extinguish when
fuel is gone
Cover exposures Use standard suppression techniques for all non-hydrogen fed fires
Rescue
Emergency response
Fire response: (as with natural gas)• Vehicle: Let a hydrogen plume burn
• Station: shut off the flow of gas; let all hydrogen burn itself off*• *recommend dry powder extinguisher if the hydrogen flame must be extinguished
• Cool/protect other exposures
Recommended
