2.2 Overheating and seizure
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.601 – Fire Protection in Machinery Spaces – (Adopted on 29 January 1993) - Annex 1 - F35 Rev.2 1991 - Fire protection of machinery spaces - 2 Items to be considered for reducing the fire risk - 2.2 Overheating and seizure

2.2 Overheating and seizure

Parent topic: 2 Items to be considered for reducing the fire risk

2.2.1 Oil heaters

  .1 Where steam heaters or heaters using other heating media are provided in fuel or lubricating oil systems, they shall be fitted with at least a high temperature alarm or low flow alarm in addition to a temperature control, except where the temperature dangerous for the ignition of the medium cannot be reached.

  .2 When electric heaters are fitted, means shall be provided to ensure that heating elements are permanently submerged during operation.

In order to avoid in any case a surface temperature of heating element of 220°C and above, a safety temperature switch, independent from the automatic control sensor, shall be provided. The safety switch should cut off the electrical power supply in the event of excessive temperature and shall be provided with manual reset.

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