Table 2-2. Mission Predive Setup Procedure.
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
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.
Supply Valve Check.
(1) Remove the supply valve handle and ensure the packing gland
nut is snug. Reinstall the valve handle.
(2) Check the valve for smooth operation through its full range
(approximately three turns). Ensure the valve handle is
secured firmly to the valve stem.
Exhaust Valve Check.
Between missions, stow helmet with the exhaust
valve in the adjustable configuration; backoff the
valve handle (fully open) to remove tension on the
(1) Lay the helmet assembly on its right side with the exhaust valve
(2) Check the exhaust valve in accordance with the applicable