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www.enersys.com
Publication No. US-MP-OM-001
March 2017
2.3.2 Explosive Gases
Batteries can generate gases which, when released, can explode
causing blindness and other serious personal injury.
Always wear protective clothing and use the correct safety tools.
Eliminate any potential of sparks, flames or arcing.
IN CASE OF FIRE: To extinguish a fire in a battery room containing lead-acid batteries, use a
CO
2, foam or dry-chemical extinguishing medium. Do NOT discharge the extinguisher directly
onto the battery. The resulting thermal shock may cause cracking of the battery case/cover.
SPECIAL PROCEDURES:
If batteries are on charge, shut off power. Use positive-pressure, self-contained breathing
apparatus. Wear acid resistant clothing. Water applied to electrolyte generates heat and
causes it to splatter.
TOXIC FUMES:
Burning plastic may cause toxic fumes. Leave area as soon as possible if toxic fumes
are present. Wear breathing apparatus if required to remain in the area.
2.3.3 Electrical Shocks and Burns
Multi-cell battery systems can attain high voltage and/or currents. Do NOT
touch uninsulated batteries, connectors or terminals. To prevent serious
electrical burns and shock, use EXTREME CAUTION when working with
the system.
Always wear protective clothing and use nonconductive or insulated safety tools when
working with ANY battery system.
Remove all jewelry that could produce a short circuit.
BEFORE working on the system:
1. Disconnect ALL loads and power sources to the battery. Use appropriate
lockout/tagout procedures.
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