Canada Occupational Health and Safety Regulations

5.5 (1) An employer shall ensure that a qualified person, charged with the operation of a boiler, is in attendance and readily available at all times while the boiler is in operation and other employees are normally present in the same building as a boiler.

(2) The attendance referred to in subsection (1) is not required if

• (a) the boiler is equipped with a fail-safe device and an automated warning device that will ensure the safe operation of the boiler and its shutdown if required, and that are installed in such a manner that they

  • (i) cannot be rendered inoperative, and

  • (ii) can be tested under operating conditions; and

• (b) the boiler is rated below 2,000 kW in the case of a high pressure boiler, and below 3,000 kW in the case of a low pressure boiler, which includes a low pressure hot water boiler, a low pressure organic fluid boiler and a low pressure steam boiler.

(3) When a boiler is shut down by a device referred to in paragraph (2)(a), the boiler shall not be restarted unless it has been examined by a qualified person and the cause of the shutdown rectified.