TO 00-25-172 - Robins Air Force Base
TO 00-25-172 - Robins Air Force Base
TO 00-25-172 - Robins Air Force Base
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<strong>TO</strong> <strong>00</strong>-<strong>25</strong>-<strong>172</strong><br />
craft. Gradually increase the delivery pressure until the<br />
gauge on the low side of the unit regulator indicates<br />
4<strong>25</strong> psig. After the flow to the aircraft system has<br />
stopped, the gauge on the cart should indicate pressure<br />
of the aircraft system. A final check should then be<br />
made by checking the gauge at the oxygen regulator in<br />
the aircraft.<br />
b. Eye protection (safety goggles, safety glasses with side<br />
shields, or face shield) shall be worn by personnel performing<br />
oxygen servicing at aircraft connection point.<br />
c. Gaseous oxygen servicing hose does not sufficiently<br />
provide a stable ground. Statically ground the Gaseous<br />
Oxygen Servicing Cart to a common ground before<br />
connecting servicing hose.<br />
d. Personnel shall observe aircraft oxygen gauges at all<br />
times during servicing operations to prevent overfilling<br />
of tanks.<br />
NOTE<br />
If the aircraft oxygen system gauges can be observed<br />
to prevent overfilling while stationed at the<br />
oxygen-servicing unit, such as T-37 aircraft, one<br />
person can accomplish the servicing.<br />
e. Personnel shall be stationed at the oxygen servicing<br />
unit at all times during servicing operations to shut off<br />
unit valves immediately upon receiving a command<br />
from the personnel watching the aircraft system gauges.<br />
4.17 LIQUID OXYGEN SERVICING.<br />
Liquid oxygen servicing refers to a LOX bottle exchange on<br />
the aircraft or a LOX cart servicing operation. For LOX<br />
bottle exchange operations, the operator is only required to<br />
wear eye protection (goggles or face shield). LOX cart servicing<br />
is not allowed during the fuel servicing portion of a<br />
CSO. For servicing with a LOX cart, the following procedures<br />
apply:<br />
• LOX will freeze and seriously damage human<br />
skin tissue upon contact.<br />
• If LOX spills on asphalt or concrete expansion<br />
joint sealant, stop servicing or other operations<br />
within a 20-foot radius of spilled area. Do not<br />
walk or roll equipment over area of spill for at<br />
least 30 minutes (minimum) and until all frost<br />
and fog appearance has disappeared.<br />
NOTE<br />
Do not attempt to rewarm parts of the body that<br />
have been frozen by contact with liquid oxygen.<br />
Prevent further injury to the frozen area. Transport<br />
immediately to the emergency room of the nearest<br />
medical facility.<br />
a. Fire Protection. Ensure a serviceable 150-pound<br />
wheeled Halon 1211 fire extinguisher or equivalent is<br />
placed within 50 feet of the LOX servicing operation.<br />
When servicing LOX in an exercise or training<br />
environment, chemical warfare defense ensembles<br />
and other chemical warfare suits, including chemical<br />
warfare masks, will not be worn, even underneath<br />
other coverings; they must be removed prior<br />
to LOX flow and not be donned until the lines are<br />
disconnected.<br />
b. Protective Clothing and Equipment. When transferring<br />
LOX, personnel shall wear headcovering, eye protection<br />
(safety glasses with side shields or goggles), face<br />
shield or locally purchased hard hat face shield combination,<br />
gloves, leather, welder’s gauntlet cuff (A-A-<br />
5<strong>00</strong>22B) (NSN 8415-<strong>00</strong>-268-7860) medium with<br />
gloves, cloth, work, cotton knit (A-A-55213) (NSN<br />
8415-<strong>00</strong>-964-4760) medium as an insert; or gloves,<br />
leather (NSN 8415-<strong>00</strong>-268-7871) with glove inserts,<br />
wool (NSN 8415-<strong>00</strong>-682-6673) or equivalent; apron<br />
(NSN 8415-<strong>00</strong>-082-6108), coveralls, white cotton, or<br />
cuffless trousers and long sleeve shirt or jacket and<br />
• Do not allow LOX to contact petroleum products<br />
as fire or explosion may result.<br />
4-16