MB Petroelum third party fatality

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Safety Alert
No. 15 Oct 98

Committed to Safety
General Awareness on Handling and Disposal of
Lithium Batteries
Background Recently an incident occurred in one
of the Shell Opearating Units where a damaged
electronic gauge for measuring bottom hole
pressure exploded after it was recovered from a
well. The gauge was fitted with a lithium battery
power pack. Due to the explosion, a well services
technician was injured.
Causes of the incident After investigation, it
was established that the primary cause of the
incident was severe deformation of the electronic
gauge housing and internal components due to a
mechanical impact. This resulted in leakage
of the Lithium battery pack, which in turn led to
a spontaneous explosion. Actions to Prevent
Recurrence and Learning Points ??While the cells
and battery packs are designed for adverse
conditions, these very aggressive chemical
systems have limitations. Certain hazards are
associated with exposure to heat and its
subsequent effects on sealed cells. These hazards
include possible battery venting, rupture,
explosion and/or fires. The initial source of
heat can be external (fire, soldering iron) or
internal, such as heating caused by a short
circuit, forced over-discharging, charging or
excessive mechanical abuse. Note Most
primary Lithium cells have a warning printed on
their label against the following conditions
short circuit, charging, forced over-discharge,
excessive heating or incineration and crush,
puncture or disassembly. ??Lithium batteries are
extremely dangerous when in contact with water,
in particular after the outer casing of the
battery has been damaged. Therefore, Lithium
batteries should always be stored in a dry closed
container when not in use. ??Store in cool place,
but prevent condensation. Store in isolated area,
away from combustible materials. ??Do not use
water, CO2, dry chemical or halogen extinguishers
for fires involving Lithium. Use dry sand or
clay.