Make sure that all SCBAs and air-line respirators are provided with safe breathing air and oxygen according to the following:
Compressed breathing air must meet the following specifications for Grade D air:
▪ Oxygen (volume/volume) within 19.5-23.5%
▪ Hydrocarbon (condensed): NO MORE
than five milligrams per cubic meter of air
▪ Carbon monoxide
(CO): NO MORE
than ten parts per million (ppm)
▪ Carbon dioxide
(CO2): NO MORE
than 1,000 ppm
▪ 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. |
Make sure the moisture content of the air supplied meets the following:
Air supplied to respirators from cylinders must NOT
exceed a dew point of -50°F (or -45.6°C) at 1 atmospheric pressure.
Compressor supplied air must NOT
exceed a dew point of 10°F (or 5.56°C) BELOW
the use temperature at 1 atmospheric pressure.
Cylinders obtained from a supplier of breathing air must have a certificate of analysis that verifies each cylinder's contents meet Grade D and dew point standards.
Compressed and liquid oxygen must meet the United States Pharmacopoeia requirements for medical or breathing oxygen.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 05-01-166, § 296-307-61605, filed 12/21/04, effective 4/2/05.]