3.7 Drainage time
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.798 – Guidelines for Performance and Testing Criteria and Surveys of Medium-Expansion Concentrates for Fire-Extinguishing Systems – (Adopted on 9 June 1997) - Annex - Guidelines for Performance and Testing Criteria and Surveys of Medium-Expansion Foam Concentrates for Fire-Extinguishing Systems - 3 Tests for Type Approval of Foam Concentrates - 3.7 Drainage time

3.7 Drainage time

  3.7.1 The drainage time should be determined, after having determined the expansion ratio, in accordance with 3.6.2.3.

  3.7.2 The test should be carried out with seawater at about 20°C. Simulated seawater with the characteristics stated in 3.6.3 may be used.

  3.7.3 Drainage time obtained with the foam generators used on board should be consistent with the drainage time obtained with the foam generators during the fire test.

Parent topic: 3 Tests for Type Approval of Foam Concentrates
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