Maritime Occupational Health and Safety Regulations

142 (1) If there is a hazard of an airborne hazardous substance or an oxygen-deficient atmosphere in a work place, the employer must provide a respiratory protective device or breathing apparatus that is listed in the most recent version of the NIOSH Certified Equipment List.

(2) A respiratory protective device or breathing apparatus referred to in subsection (1) must be selected, fitted, cared for, used and maintained in accordance with the standards set out in CSA Standard CAN/CSA-Z94.4-02 (R2007), Selection, Care and Use of Respirators.

(3) If air is provided by means of a respiratory protective device or breathing apparatus referred to in subsection (1)

• (a) the air must meet the standards set out in clause 15.3 of CSA Standard CAN/CSA-Z180.1-00 (R2005), Compressed Breathing Air and Systems; and

• (b) the system that supplies air must be constructed, tested, operated and maintained in accordance with the CSA Standard referred to in paragraph (a).

(4) If a steel or aluminum self-contained breathing apparatus cylinder has a dent deeper than 1.5 mm and less than 50 mm in major diameter or shows evidence of deep isolated pitting, cracks or splits, the cylinder must be removed from service until it has been shown to be safe for use by means of a hydrostatic test at a pressure equal to one and one-half times the maximum allowable working pressure.