Canada Occupational Health and Safety Regulations (SOR/86-304)

5.12 Every boiler, pressure vessel and pressure piping system in use at a work place shall be inspected by an inspector more frequently than it is provided for in section 5.11, if it is necessary to ensure that the boiler, pressure vessel or pressure piping system is safe for its intended use.

5.13 For the purposes of subsections 5.11(5), (6) and (8), the corrosion rate shall be determined from actual metal loss during the last appropriate inspection period specified in the subsections.

5.14 Stationary or portable air receivers used in the railway industry, instead of being inspected in accordance with subsection 5.11(7) and a record completed in accordance with section 5.18, may be inspected and tested and a record filed in accordance with TC-0-010, Rules for the Installation, Inspection and Testing of Air Reservoirs (Other Than on Motive Power Equipment) made by the Railway Association of Canada and approved by the Minister of Transport on December 5, 1994.

5.15 If a pressure vessel that contains materials hazardous to human health or the environment is to be emptied before being inspected, it shall be emptied and inspected in a manner that does not pose a risk to human health or the environment.

• 5.16 (1) The installation of a buried pressure vessel shall meet the requirements set out in Appendix A to Part I of the Boiler Code.

• (2) Notice of the proposed backfilling shall be given to a health and safety officer at the regional office or district office before backfilling is done over a pressure vessel.

• (3) If test plates are used as an indication of corrosion of a buried pressure vessel, the test plates and, subject to subsection (4), the pressure vessel shall be completely uncovered and inspected by an inspector at least once every three years.

• (4) If, on an inspection referred to in subsection (3), the test plates show no corrosion, the buried pressure vessel may be completely uncovered and inspected at intervals exceeding three years if the employer, immediately after the inspection, notifies in writing a regional health and safety officer at the regional office or district office of the condition of the test plates and of the proposed inspection schedule for the pressure vessel.

• (5) Every buried pressure vessel shall be completely uncovered and inspected at least once every 15 years.

5.17 The employer shall keep and maintain a record of every boiler, pressure vessel and pressure piping system to which this Part applies and that is under the employer’s control.