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

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312.29. Underwater welding and cutting: Any underwater welding or cutting, as well as the installation, handling and maintenance of equipment required to that effect, must be carried out in accordance with Clause 9.5 of CSA Standard CAN/CSA W117.2-01, Safety in Welding, Cutting and Allied Processes, except Clause
O.C. 425-2010, s. 3.