6.2 This Part does not apply to
(a) a heating boiler that has a heating surface of 3 m2 or less;
(b) a pressure vessel that has a capacity of 40 L or less;
(c) a pressure vessel that is installed for use at a pressure of 100 kPa or less;
(d) a pressure vessel that has an internal diameter of 150 mm or less;
(e) a pressure vessel that has an internal diameter of 600 mm or less and that is used for the storage of hot water;
(f) a pressure vessel that has an internal diameter of 600 mm or less and that is connected to a water-pumping system containing air that is compressed to serve as a cushion; or
(g) a refrigeration plant that has a capacity of 18 kW or less of refrigeration.
Construction, Testing and Installation
6.3 Every boiler, pressure vessel and piping system used in a work place shall be constructed, tested and installed by a qualified person.
Use, Operation, Repair, Alteration and Maintenance
6.4 (1) No person shall use a boiler, pressure vessel or piping system unless it has been inspected by an inspector in accordance with subsection (2).
(2) Every boiler, pressure vessel and piping system shall be inspected in accordance with sections 6.8 to 6.10
(a) after installation; and
(b) after any welding, alteration or repair is carried out on it.
- SOR/94-165, s. 18.
6.5 Every boiler, pressure vessel and piping system in use at a work place shall be operated, maintained and repaired by a qualified person.
6.6 No person shall alter, interfere with or render inoperative any fitting attached to a boiler, pressure vessel or piping system except for the purpose of adjusting or testing the fitting.
Buried Pressure Vessels
6.7 Notice of a proposed backfilling over a buried pressure vessel shall be given to the regional safety officer before the backfilling is begun.
6.8 (1) Subject to section 6.9, every boiler, pressure vessel and piping system in use in a work place shall be inspected
(a) externally, at least once each year; and
(b) internally, at least once every five years.
(2) Paragraph (1)(a) does not apply to a pressure vessel that is buried.
6.9 (1) Where a pressure vessel is used to store anhydrous ammonia, a hydrostatic test at a pressure equal to one and one-half times the maximum allowable working pressure shall be conducted at least once every five years.
(2) The integrity of a pressure vessel that is a part of a motion compensator system or blowout preventer shall be verified at least once every five years by
(a) where practicable, an internal inspection; or
(b) where an internal inspection is not practicable, by a hydrostatic test or other non-destructive test method.
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