TM 54220-231-14&P
Section
IV. OPERATION UNDER UNUSUAL CONDITIONS
(EMERGENCY PROCEDURES)
Page
2-7
General .............................................................
2-80
2-8
Operation in Unusual Weather
............................................
2-80
2-9
Nuclear, Biological, Chemical
.............................................
2.80
2-10
Emergency
Procedures
................................................
2-80
2-7
General.
This section includes
instructions for actions necessary
to operate equipment
under unusual
conditions.
All diving, chamber,
and diver support operations
must be conducted
IAW U.S. Army Dive Manual FM
20-11-1.
2-8 Operation
In Unusual
Weather.
The following procedures
are used in cases of extreme weather conditions
when diving the SDASS:
(a)
At surface temperatures
below 29*F, Volume Tank Assembly drain valve must be opened at
least every 10 minutes to avoid freezing condensation.
(b)
When operating
below 29*F, check hoses and hose connections
frequently
for brittle lines,
cracks, cuts, blisters, etc...
(c)
When operating
above 90'F, check hoses and hose connections
frequently for bubbles, blisters,
and loose fittings due to expansion.
2-9 Nuclear,
Biological,
Chemical.
In the event of nuclear, biological or chemical attack, conduct operations
and
decontamination
IAW unit SOP.
2-10 Emergency
Procedures
(EP).
DIVING
a.
EP-1
Sudden
drop or rapid rise in air pressure
on DACC: CONSOLE
PRESSURE
Gage (ALP-
G423), Primary and/or Secondary
LP OUT Supply Gage (ALP-G420 or ALP-G422).
In the
event the regulator has failed open, the sound of the DACC or VTA relief valves lifting and
air escaping
may be heard.
(1) Close DACC HP IN PRIMARY (AHP-V405).
(2) Open DACC HP IN SECONDARY (AHP-V401).
(3) Abort Dive. Recover divers.
2-80
Change
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