Questions and Answers
What is the first step to take for potentially disabling the high voltage battery system?
Which method should be avoided if water does not extinguish the fire during an attack?
What indicates a potential for secondary fire in relation to battery temperature?
How long should electric vehicles that have been involved in a fire be monitored before turning them over to a tow company?
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What is the purpose of using a thermal blanket during a vehicle fire?
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What is the main purpose of cutting the negative terminal on the low voltage side of hybrid vehicles?
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When using a thermal imager or temperature gun, what specific area should be monitored?
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What characteristic of the battery temperature after a fire indicates a risk of reignition?
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What is a potential hazard if the batteries have suffered thermal or mechanical damage?
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Which factor should be considered in the Incident Action Plan (IAP) when dealing with a vehicle fire?
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Study Notes
High Voltage and Low Voltage Battery Systems
- High voltage battery systems are managed via low voltage battery systems; disabling both is crucial for safety.
- Cut the negative terminal on the low voltage side to potentially disable the battery systems.
- Some electrical capacitors might take up to 10 minutes to fully discharge, posing a lingering electrical hazard.
Hybrid and Electric Vehicle Hazards
- Hybrid vehicles typically combine lithium batteries with another fuel source, creating multiple hazards.
- In case of a fire, using water may not extinguish the flames; dry chemical extinguishers are recommended for initial suppression efforts.
Temperature Monitoring Post-Fire
- After extinguishing a fire, use a Thermal Imaging Camera (TIC) or temperature gun to measure battery casing temperatures.
- Documenting temperature trends is critical; increasing temperatures indicate a risk for reignition and secondary fires.
- Ensure temperatures around battery locations are stable or decreasing for at least one hour before involving a tow company to mitigate reignition risks.
Risk Management and Strategies
- Batteries that have experienced thermal or mechanical damage pose an electrocution risk; minimize contact with affected vehicles.
- Consider using a thermal blanket to isolate a burning vehicle and limit the fire's spread; however, it does not prevent thermal runaway.
- If there is no threat to life or exposure, an Incident Action Plan (IAP) may allow for the vehicle to burn while treating it as an exposure to reduce smoke production.
High Voltage and Low Voltage Battery Systems
- High voltage battery systems are managed via low voltage battery systems; disabling both is crucial for safety.
- Cut the negative terminal on the low voltage side to potentially disable the battery systems.
- Some electrical capacitors might take up to 10 minutes to fully discharge, posing a lingering electrical hazard.
Hybrid and Electric Vehicle Hazards
- Hybrid vehicles typically combine lithium batteries with another fuel source, creating multiple hazards.
- In case of a fire, using water may not extinguish the flames; dry chemical extinguishers are recommended for initial suppression efforts.
Temperature Monitoring Post-Fire
- After extinguishing a fire, use a Thermal Imaging Camera (TIC) or temperature gun to measure battery casing temperatures.
- Documenting temperature trends is critical; increasing temperatures indicate a risk for reignition and secondary fires.
- Ensure temperatures around battery locations are stable or decreasing for at least one hour before involving a tow company to mitigate reignition risks.
Risk Management and Strategies
- Batteries that have experienced thermal or mechanical damage pose an electrocution risk; minimize contact with affected vehicles.
- Consider using a thermal blanket to isolate a burning vehicle and limit the fire's spread; however, it does not prevent thermal runaway.
- If there is no threat to life or exposure, an Incident Action Plan (IAP) may allow for the vehicle to burn while treating it as an exposure to reduce smoke production.
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Description
This quiz explores essential knowledge regarding safety protocols for hybrid vehicle battery systems. It emphasizes the importance of disabling both the high voltage and low voltage battery systems to mitigate electrical hazards. Participants will learn about necessary steps, including cutting the negative terminal, and the timing required for electrical components to discharge.
