Canada Occupational Health and Safety Regulations

11.5 (1) If conditions in a confined space or the nature of the work to be performed in a confined space is such that the specifications set out in paragraph 11.4(1)(a) cannot be complied with during all times that a person is in the confined space, the employer shall

• (a) in consultation with the work place committee or the health and safety representative, establish emergency procedures to be followed in the event of an accident or other emergency in or near the confined space, which procedures shall specify the date on which they are established and provide for the immediate evacuation of the confined space when

  • (i) an alarm is activated, or

  • (ii) there is any significant change in a concentration or percentage referred to in paragraph 11.4(1)(a) that would adversely affect the health or safety of a person in the confined space;

• (b) provide the protection equipment referred to in paragraphs 11.3(b), (c) and (d) for each person who is about to enter the confined space;

• (c) ensure that a qualified person trained in the entry and emergency procedures established pursuant to paragraph 11.3(a) and paragraph (a) is

  • (i) in attendance outside the confined space, and

  • (ii) in communication with the person inside the confined space;

• (d) provide the qualified person referred to in paragraph (c) with a suitable alarm device for summoning assistance; and

• (e) ensure that two or more persons are in the immediate vicinity of the confined space to assist in the event of an accident or other emergency.

(2) One of the persons referred to in paragraph (1)(e) shall

• (a) be trained in the emergency procedures established pursuant to paragraph (1)(a);

• (b) be the holder of a basic first aid certificate; and

• (c) be provided with the protection equipment and emergency equipment referred to in paragraph 11.3(d).

(3) The employer shall ensure that every person entering, exiting or occupying a confined space referred to in subsection (1) wears an appropriate safety harness that is securely attached to a lifeline that

• (a) is attached to a secure anchor outside the confined space;

• (b) is controlled by the qualified person referred to in paragraph (1)(c);

• (c) protects the person from the hazard for which it is provided and does not in itself create a hazard; and

• (d) is, if feasible, equipped with a mechanical lifting device.