OAR 437-002-0355: Air Supply Systems (Compressed Gases and Air)

(1) For purposes of this standard, air supply systems shall include: (a) Air supplied directly to a diver; (b) Compressed systems used to fill air cylinders (tanks); (c) Compressed air cylinders (tanks); and (d) Compressed oxygen cylinder; (e) For additional requirements for compressed gas cylinders, see OAR division 2/I, 1910.134(d), Respiratory Protection; Division 2/H, 1910.101, Compressed Gases; and 30 CFR 11, Respiratory Protective Devices. (2) Tests for carbon monoxide shall be conducted on the air in air supply systems as follows: (a) At least daily for air supplied directly to the diver; and (b) At least once for each group or batch of cylinders filled or purchased. (3) The employer shall insure that the requirements of 1910. 430(d) through (i) are met, regardless of where compressed gas cylinder (tanks) are purchased or filled.