Q-2, r. 32 - Regulation respecting hazardous materials

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87. Every building storing more than 20,000 kg of materials or objects containing PCBs or contaminated by PCBs and that is equipped with a mechanical ventilation device shall be equipped with an emergency system that will stop the ventilation and close the air intake and air evacuation registers as soon as there is heat or smoke.
O.C. 1310-97, s. 87.