WAC 296-842-20005
Make sure breathing air and oxygen
meet established specifications. (1) Make sure that all SCBAs
and air-line respirators are provided with safe breathing air
and oxygen.
(2) Compressed breathing air must meet the following
specifications for Grade D air:
(b) Hydrocarbon (condensed): NO MORE than five milligrams
per cubic meter of air
(c) Carbon monoxide (CO): NO MORE than ten parts per
million (ppm)
(d) Carbon dioxide (CO2): NO MORE than 1,000 ppm
(e) No noticeable odor
Reference:
See the American National Standards Institute - Compressed Gas Association Commodity Specification for Air
(G-7.1.1989) for more information. Contact your local library to access a copy.
(3) Make sure the moisture content of the air supplied
meets the following:
(a) Air supplied to respirators from cylinders must NOT
exceed a dew point of -50°F (or -45.6°C) at 1 atmospheric
pressure.
(b) Compressor supplied air must NOT exceed a dew point of
10°F (or 5.56°C) BELOW the use temperature at 1 atmospheric
pressure.
(4) Cylinders of breathing air purchased or otherwise
obtained from a supplier must have a certificate of analysis
from the supplier verifying each cylinder's contents meet
Grade D breathing air requirements and dew point standards.
(5) Compressed and liquid oxygen must meet the United
States Pharmacopoeia requirements for medical or breathing
oxygen.