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 TM 55-1905-220-14-8
d. All personnel should be encouraged to wash their hands on, exit from a
sewage handling area or after being in contact with sewage handling
equipment.
e.
REFRIGERANT-12.
Refrigerant-12 is practically odorless and nontoxic. It is not necessary to wear a gas mask when servicing
equipment in which it is contained unless the conditions necessary for the decomposition of R-12 to
phospene gas exist.
Never use a torch or attempt a repair on a line containing R-12 until it is certain that all gas has been
pumped out of the section, of pipe to be repaired, the area is well ventilated and,,, the line has been valved
off. Refrigerant-12 in contact with an open flame of high temperature (about 1,000 (557.8 ))
F
C
decomposes into phosgene, a highly toxic gas.
Always wear goggles when handling R-12, or servicing equipment in which it is contained, to avoid the
possibility of liquid refrigerant coming in contact with the eyes.
If liquid R-12 accidentally comes in contact with the eyes, take person suffering the injury to the medical
officer at once. Do not rub or irritate the eyes and give the following first ' aid treatment immediately:
a. Introduce drops of sterile mineral oil into the eyes as an irrigant.
b. If irritation continues at all, wash the eyes with a weak boric acid solution, or a sterile salt solution not
to exceed 2% sodium chloride.
Should liquid R-12 come in contact with the skin, treat the injury the same as though the skin had been
frost bitten or frozen.
Do not work in a closed space where R-12 may be leaking unless adequate ventilation is provided.
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