k. Ohm tests must be conducted every 2 years on all static
grounds in the laboratory (maximum resistance is 25 ohms).
Special Considerations for Mobile and Airmobile Laboratories
a. Purge the laboratory before entering; if the purge system
is inoperative, open all doors and vents and wait approximately
30 minutes before occupancy.
Remove all full or empty sample cans promptly from the
laboratory; store empty cans at least 50 feet away from the
Test and calibrate the gas alarm as required.
e. Remove all waste drums and sample cans from the area when
setting up or taking down the laboratory and equipment
Fire presents the greatest single dangerous hazard in a
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
from fire. Make fire extinguishers valuable tools for fighting
Knowing the location and types of fire extinguishers on
b. Inspecting the laboratory facility monthly to ensure that
all extinguishers are in their designated places.
readily accessible, are not damaged, and the nozzles are not
Following the manufacturer's instructions when using the
Recharging extinguishers immediately after use.
Testing all extinguishers.