Regulation 9 - Fixed high-expansion foam fire-extinguishing systems in machinery spaces
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.847 – Interpretations of Vague Expressions and other Vague Wording in SOLAS Chapter II-2 – (Adopted on 12 June 1998) - Annex - Interpretations of Vague Expressions and Other Vague Wording in SOLAS Chapter II-2 - Part A - General - Regulation 9 - Fixed high-expansion foam fire-extinguishing systems in machinery spaces

Regulation 9 - Fixed high-expansion foam fire-extinguishing systems in machinery spaces

Parent topic: Part A - General

9 High-expansion foam fire-extinguishing system in spaces other than machinery spaces

 When such a system is to be fitted in any space other than a machinery space, this regulation applies.

9.1.1 Reference to MSC/Circular.670

 Reference is made to MSC/Circular.670 - Guidelines for the performance and testing criteria and surveys of high-expansion foam concentrates for fixed fire-extinguishing systems.

9.3 Delivery ducts for foam

 Where the space containing the foam generators is close to the protected space, the relevant delivery ducts should meet the following requirements:

  • .1 they should be made of steel having a thickness of not less than 5 mm;

  • .2 they should have a length, within the foam generator space, of a least 450 mm; and

  • .3 their openings at the bulkhead or deck between the foam generator space and the protected space should be provided with a damper (single or multi-bladed) made of stainless steel with a thickness of not less than 3 mm. Those dampers should be automatically operated (electrically, pneumatically or hydraulically) by means of remote control of the foam generator related to them.

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