TM 5-4220-225-14
Deficiency Report). Mail it to us at: Commander, U.S. Army Troop Support Command, ATTN: AMSTR-MOF, 4300
Goodfellow Boulevard, St. Louis, Missouri 63120-1798. We will send you a reply.
1-6. List of Abbreviations.
ac
Alternating current
ACFM
Actual cubic feet per minute of gas flow
CCN
Closed cell neoprene
CO2
Carbon dioxide
dBA
Noise level standard (scale A)
dc
Direct current
FSW
Feet of seawater
Hg
Mercury
H.P.
High Pressure
Hz
Hertz; unit of electrical frequency (cycles per second)
H2O
Water (fresh)
I.D.
Inside diameter
Kg
Kilogram
Kn
Knot
lb
Pound
LPM
Liters per minute, flow
Nm
Newton meter
NWDL
Normal working diving limit
O.B.
Overbottom
O2
Oxygen
P
Pressure differential
psi
Pounds per square inch
psia
Pounds per square inch, absolute
psid
Pounds per square inch, differential
psig
Pounds per square inch, gage
RTV
Room Temperature vulcanizing sealant
SCUBA
Self Contained Underwater Breathing Apparatus
SEV
Surface equivalent volume
SSDS
Surface Supported Diving System
U/W
Underwater
VAC
Vacuum
Vac
Volt, alternating current
Vdc
Volt, direct current
°C
Degrees Celsius
°F
Degrees Fahrenheit
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