c. If the floor is uneven and it is difficult to obtain five square
inches of contact, a thin coat of "electrode jelly" (brushless shaving
soaps) may be applied to the underside of the block.
d. The other electrode should have a suitable spring test clip for
attachment to a permanent ground.
e. The electrodes must be insulated from each other; they should be
connected to instruments with test leads which can reach all parts of the
floor.
f. The voltage applied to the instrument should be between 90 and 500
volts.
g. Low voltage instruments may be used.
However, if the floor shows
more than the maximum permitted resistance with instruments of less than 500
volts, a test with a 500 volt instrument should be made before any action is
taken.
h. If the resistance is greater than 250,000 ohms, and the floor and
electrodes are free from insulating materials, the effectiveness of the
floor grounds should be tested.
PART C - INSPECT DOORS, OPERATIONAL SHIELDS,
AND SPRINKLER SYSTEM
1.
Check the number of exit doors in each room of the ammunition
maintenance facility. To determine the number of required exit doors, you
must check the maintenance Standard Operating Procedure (SOP) to see how
many personnel will be required to work in each room.
a. Each room must be provided with at least two exits; these exists
should be located at opposite ends or sides.
b. If two or less people work in a small room, one exit is sufficient.
c. Rooms in which more than 8 persons are employed shall be provided
with 1 additional exit for each 5 additional employees or portion there of.
d. In determining the total number of exits required where exit widths
exceed 30 inches, each 30 inches of width may be considered 1 exit.
e. Exits should be equally
spaced
about
the
perimeter
of
large
explosives operating buildings.
12
MM4673
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