Government of Canada / Gouvernement du Canada
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Marine Machinery Regulations (SOR/90-264)

Regulations are current to 2022-01-12 and last amended on 2021-06-23. Previous Versions

SCHEDULE XSteam, Boiler Water and Cooling Water Systems

PART I(Section 4)Design Specifications

1Steam pipes and connected components through which steam passes shall be designed, constructed and installed to withstand the maximum working stresses to which they may be subjected.
2Means shall be provided for draining every steam pipe in which dangerous water-hammer action may occur.
3Where a steam pipe or component may receive steam from any source at a higher pressure than that for which it is designed, it shall be fitted with a suitable reducing valve, relief valve and pressure gauge.
4Each steam generating system that provides services essential for the safety of the ship, or that could be rendered dangerous by the failure of its feed-water supply shall be fitted with at least two separate feed- water systems, including feed pumps, but a single penetration of the steam drum is acceptable.
5Unless over-pressure is prevented by the pump characteristics, means shall be provided to prevent over-pressure in any part of the system.

PARTS II to IV[Repealed, SOR/2021-135, s. 78]

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