TM 5-4220-225-14
2-11. Daily Predive Procedures. The following procedures, Table 2-3, Daily Predive Procedures, shall be
performed before the start of each days diving operations.
WARNING
Arbitrary omission of steps could result in equipment failure and possible injury.
Table 2-3. Daily Predive Procedures.
Step
Procedure
NOTE
Equipment requirements will be tailored to each dive
mission. A briefing by the dive supervisor will indi-
cate the specific requirements and all equipment for
diving should be assembled on the diving station,
including necessary support equipment such as
tools and repair parts.The equipment must be laid
out in an orderly manner and inspected and tested
in accordance with these procedures.
1. HELMET ASSEMBLY
NOTE
(External Checks)
Always rest the helmet on a rubber mat when
inspecting or testing.Place the helmet on a bench
with the communication whip extended over the side
to avoid sharp flexing of the whip.
a.
Shell and Base Inspection.
(1)
Check base for cracks and breaks. Select an alternate helmet
if necessary.
(2)
Visually inspect for loose, missing or damaged screws and
stripped threads.Tighten or replace as necessary.
b.
Viewport Assembly Inspection.
(1)
Inspect viewports for scratches and chips. Replace as
necessary.Scratches 1/32-inch deep and more than 1 inch
long require replacement of viewport.
(2)
Inspect the viewport retainers for cracks, warping, broken
screws, and stripped threads. Replace as necessary.
2-31
