S-2.1, r. 13 - Regulation respecting occupational health and safety

Full text
312.43. Sampling and analysis: Sampling and analysis of compressed air, pure gases and gas mixtures used for diving must be carried out in accordance with Clause 4.9 and Clauses 4.11.2 to 4.11.5 of CAN/CSA Standard Z275.2-11, Occupational Safety Code for Diving Operations. The results of those analyses must be entered by the employer in a register that must be kept for a period of at least 5 years.
O.C. 425-2010, s. 3; O.C. 1104-2015, s. 5.
312.43. Gas mixture: The gas mixture used in a breathing mixture must meet the following requirements:
(1)  the gases must be at least 99.5% pure;
(2)  the proportion of oxygen, nitrogen, helium and any other gas present in the mixture must comply with the decompression tables of the Defence and Civil Institute of Environmental Medicine of the Department of National Defence of Canada;
(3)  the concentration of contaminants in the mixture must not exceed the maximum concentration provided for in Part 2 of Schedule X;
(4)  the concentration of contaminants other than those provided for in Schedule II must not reach the odour threshold or exceed 1/25 of the time-weighted average exposure values provided for in Part 1 of Schedule I;
(5)  the particles must not exceed 0.3 µm; and
(6)  the mixture must be odourless.
O.C. 425-2010, s. 3.