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Oil and Gas Occupational Safety and Health Regulations

Version of section 12.6 from 2014-05-29 to 2022-05-01:

  •  (1) If a hazardous substance is likely to be produced by hot work in a confined space,

    • (a) the confined space shall be ventilated in accordance with subsection (2); or

    • (b) every employee who enters into, exits from and occupies the confined space shall use a respiratory protective device that meets the requirements of section 13.7.

  • (2) If the requirements set out in subsection 12.2(1) have been maintained with the use of ventilation equipment, no person shall be granted access to the confined space unless

    • (a) the ventilation equipment is

      • (i) equipped with an alarm that will, if the equipment fails, be activated automatically and be audible or visible to any person in the confined space, or

      • (ii) monitored by an employee who is in constant attendance at the equipment; and

    • (b) in the event of a failure of the ventilation equipment, sufficient time is available for the person to escape from the confined space before

      • (i) the person’s exposure to or the concentration of a hazardous substance in the confined space exceeds the limit prescribed in paragraph 12.2(1)(a),

      • (ii) the concentration of airborne hazardous substances, other than chemical agents, in the confined space is hazardous to the safety or health of the person, or

      • (iii) the concentration of oxygen in the atmosphere ceases to meet the requirements of paragraph 12.2(1)(c).

  • (3) The employee referred to in subparagraph (2)(a)(ii) shall activate an alarm in the event of a failure of the ventilation equipment.

  • SOR/88-199, s. 19
  • SOR/2014-141, s. 8

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