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 TM 55-1905-219-14-8
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.
REFRIGERANT-12.
Refrigerant-12 is practically odorless and non-toxic. 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 phosgene 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
F
(557.8*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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