Vehicle Fire - Hyundai NEXO Emergency Response Manual

Emergency Procedures

Vehicle Fire

After Initial Emergency Response Procedures have been applied, firefighting procedures may begin.
Hyundai recommends that each response team follow their own department's standard operating
procedures for fighting vehicle fires in combination with the NEXO specific details that are covered
in this section.
Firefighting Operations
If the high-voltage battery pack is either involved in or at risk of being involved in a fire in a NEXO,
strict cautions must be taken while conducting firefighting operations due to following reasons:
• Lithium-ion polymer batteries contain gel electrolytes that can vent, ignite, and produce sparks
when subjected to temperatures above 300°F.
• May burn rapidly with a flare-burning effect.
• Even after the high-voltage battery fire appears to have been extinguished, renewed or delayed
fires can occur.
- Use a thermal imaging camera to ensure the high voltage battery is completely cooled before
leaving the incident.
- Always advise second responders that there is a risk of the battery re-igniting.
- If there is a fire, submersion or collision that has compromised the high voltage battery, always
store it in an open area with no exposures within 50 feet.
• A burning battery could release hydrogen fluoride, carbon monoxide, and carbon dioxide
gasses. Use NIOSH/MSHA approved full-face self-contained breathing apparatus (SCBA) with
full protective gear.
• If the fire spreads to the hydrogen tanks at rear floor of NEXO, you should not extinguish the
fire. Wait until the vehicle is done burning and find a place where you can protect yourself.
Even if the high-voltage battery pack is not directly involved in a vehicle fire, approach the vehicle
very carefully.
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