TB 172 - Electric/Hybrid Vehicles And Lithium-Ion Battery Safety

Question 1

In the incident involving the Tesla Model X (above), it was well documented that ignition from a Li-ion Battery can take place up to __ days after the initial fire

Answer 1

6

Question 2

The Lithium-ion battery can range from ____ to ____ plus volts

Answer 2

100 to 500

Question 3

A “_________ _________” is a term used when a battery cell suffers a short circuit; the battery heats up and continues to produce heat, even when it is extinguished and/or submerged in water

Answer 3

Thermal Runaway

Question 4

During a thermal runaway event, temperatures can exceed over ____ degrees Fahrenheit. The battery cell itself will suffer a self-destruction of its structure (these are small explosions and “pop” noises Firefighters may hear) and the gases and heat produced will cause the module casing to vent (these are the “thump” noises Firefighters may hear on the scene as the modules’ pressure caps open up).

Answer 4

900

Question 5

The National Fire Protection Association (NFPA) statistics show that about ___ cars catch fire for every 1 billion miles driven in the United States

Answer 5

90

Question 6

LAFD personnel shall establish a ___’ safety zone when extinguishing an EV fire with water and wear full structure fire personal protective equipment (PPE) and self-contained breathing apparatus (SCBA

Answer 6

30

Question 7

During NFPA testing, it was determined that it could take _______ and up to ________ gallons of water to effectively cool down the battery

Answer 7

2,600
3,000

Question 8

Due to the potential of electrocution, LAFD personnel working on vehicles after a fire or accident should wear the Department approved _________ _________ any time they come in contact with the vehicle, including incidents that require extrication

Answer 8

Gauntlet Gloves

Question 9

Do not use ______ on EV fires

Answer 9

Foam

Question 10

Electric/Hybrid Vehicles And Lithium-Ion Battery Safety:
Consider the electrical system unsafe for a full __ minutes after ignition shut down

Answer 10

5

Question 11

Never, touch, cut or open any _______ cable or components protected by ________ shields (high-voltage)

Answer 11

Orange
Orange

Question 12

First Responder Loop: In all vehicle accidents or auto fires involving EV or Hybrid vehicles, LAFD personnel shall make every attempt to disconnect the DC electrical battery at the vehicle’s “______ ___________ Loop.”

Answer 12

First Responder