k. Ohm tests must be conducted every 2 years on all static
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grounds in the laboratory (maximum resistance is 25 ohms).
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4.
Special Considerations for Mobile and Airmobile Laboratories
a. Purge the laboratory before entering; if the purge system
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is inoperative, open all doors and vents and wait approximately
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30 minutes before occupancy.
b.
Ground the laboratory and generator.
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c.
Remove all full or empty sample cans promptly from the
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laboratory; store empty cans at least 50 feet away from the
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laboratory or generator.
d.
Test and calibrate the gas alarm as required.
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e. Remove all waste drums and sample cans from the area when
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setting up or taking down the laboratory and equipment
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(camouflage netting produces static electricity).
5.
Fire Extinguishes
Fire presents the greatest single dangerous hazard in a
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laboratory.
Laboratory personnel should be thoroughly prepared
on how to prevent fire and how to react to one if necessary.
Procedures for extinguishing fires should be posted in prominent
locations in the laboratory. Also fire extinguishers and other
fire fighting equipment should be within easy reach but safe
from fire. Make fire extinguishers valuable tools for fighting
fires by:
a.
Knowing the location and types of fire extinguishers on
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hand in the laboratory and the classes of fire for which they
are intended.
b. Inspecting the laboratory facility monthly to ensure that
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all extinguishers are in their designated places.
They are
readily accessible, are not damaged, and the nozzles are not
clogged.
c.
Following the manufacturer's instructions when using the
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extinguisher.
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d.
Recharging extinguishers immediately after use.
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e.
Testing all extinguishers.
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4-4
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