12.3 Where conditions in the confined space or the nature of the work to be performed in the confined space are such that subparagraph 12.2(1)(a)(i) and paragraphs 12.2(1)(c), (e) and (f) cannot be complied with, the following procedures shall apply:
(a) a qualified person trained in the procedures referred to in subsection 12.2(2) shall be
(i) in attendance outside the confined space,
(ii) in communication with the person inside the confined space, and
(iii) provided with a suitable alarm device for summoning assistance;
(b) every person granted access to the confined space shall be provided with and trained in the use of the protection equipment referred to in subsection 12.2(2);
(c) every employee entering into, exiting from and occupying the confined space shall wear a safety harness that is securely attached to a life line that
(i) is attached to a secure anchor outside the confined space, and
(ii) is controlled by the qualified person referred to in paragraph (a);
(d) two or more employees shall be in the immediate vicinity of the confined space to assist in the event of an accident or other emergency; and
(e) one of the employees referred to in paragraph (d) shall
(i) be trained in the emergency procedures referred to in subsection 12.2(2),
(ii) be a first aid attendant who has successfully completed a CPR course, and
(iii) be provided with the protection equipment and emergency equipment referred to in subsection 12.2(2).
- SOR/94-165, s. 47.
12.4 Before a confined space is sealed, the person in charge of the area surrounding the confined space shall ascertain that no person is inside the confined space.
Hot Work Operations
12.5 (1) Hot work shall not be performed in a confined space where an explosive or flammable hazardous substance may be present unless a qualified person has determined that the work can be safely performed therein.
(2) Where hot work is to be performed in a confined space,
(a) a qualified person shall patrol the area surrounding the confined space and maintain therein a fire protection watch until all hazard of fire is passed; and
(b) fire extinguishers shall be provided in the area referred to in paragraph (a).
- SOR/88-199, s. 19;
- SOR/2014-141, s. 14(F).
12.6 (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.
- Date modified: