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

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312.74. Exceptional preventive measures: In addition to the general preventive measures referred to in sections 312.68 to 312.73, the exceptional preventive measures prescribed in sections 312.75 to 312.79 apply to any dive operation in a contaminated environment conducted in one of the following locations:
(1)  at the discharge point or in the vicinity of the discharge point of effluents from an industrial plant, a water treatment or wastewater purification station;
(2)  in the vicinity of a chemical, biological or radioactive pollutant spill; or
(3)  in a nuclear plant.
Likewise, the measures apply if sediments containing contaminants are moved with equipment resulting in their suspension at the underwater workstation.
O.C. 425-2010, s. 3.