INTRODUCTION
As an Ammunition Inspector, MOS 55X40, you will inspect an ammunition
maintenance facility before a maintenance operation starts. This requires
inspecting the safety standards of the building, equipment, and tools, and
checking the Standard Operating Procedures (SOP) for completeness.
Personnel safety and maintenance operation effectiveness depends on work
areas conforming to established standards. Your careful attention to each
area of inspection will ensure that these standards are met.
Inspection
results will be recorded on a locally produced maintenance inspection
worksheet.
PART A - INSPECT AND TEST LIGHTNING PROTECTION SYSTEM
1.
Begin your inspection of the maintenance facility by examining the test
records for the lightning protection system.
a. The test records should indicate that the system
was
visually
inspected every seven (7) months and tested every 14 months.
b. If the system has not been tested during the past 14 months, then
you will have to test the system to determine if it meets the safety
standard.
2.
Next, visually inspect
the
lightning
protection
system
for
proper
installation or damage.
a. The integrally mounted system is the most common lightning
protection system for a maintenance facility with masonry construction and a
non-metallic or non-reinforced concrete roof. (See Figure 1-1.)
b. This lightning protection system includes air
terminals,
ridge
cables, down conductors, ground connections, and grounds.
3.
Check the air terminals for serviceability.
a. The air terminals should not be bent; they should
be
securely
connected and electrically continuous with the ridge cable.
b. The air terminals should be at least two (2) feet high.
c. If the building has vents that will emit explosive dust, the air
terminals shall be at least five (5) feet high.
d. If combustible dusts and flammable gases or vapor are emitted under
forced draft from opened stacks, the air terminals shall extend at least 15
feet above the vent opening.
2
MM4673
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