4 Classification criteria
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.848 – Revised Guidelines for the Approval of Equivalent Fixed Gas Fire-Extinguishing Systems, as Referred to in SOLAS 74, for Machinery Spaces and Cargo Pump-Rooms – (Adopted on 8 June 1998)Amended by MSC.1/Circular.1267 - Annex - Revised Guidelines for the Approval of Equivalent Fixed Gas Fire-Extinguishing Systems, as Referred to in SOLAS 74, for Machinery Spaces and Cargo Pump-Rooms - Appendix - Test Method for Fire Testing of Fixed Gas Fire-Extinguishing Systems - 4 Classification criteria

4 Classification criteria

  4.1 Class B fires must be extinguished within 30 s of the end of agent discharge. At the end of the soak period there should be no re-ignition upon opening the enclosure.

  4.2 The fuel spray should be shut off 15 s after extinguishment. At the end of the soak time, the fuel spray should be restarted for 15 s prior to reopening the door and there should be no re-ignition.

  4.3 At the end of the test fuel trays must contain sufficient fuel to cover the bottom of the tray.

  4.4 Wood crib weight loss must be no more than 60%.

Parent topic: Appendix - Test Method for Fire Testing of Fixed Gas Fire-Extinguishing Systems
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