3.7 Drainage time
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.670 – Guidelines for The Performance and Testing Criteria and Surveys of High-Expansion Foam Concentrates for Fixed Fire-Extinguishing Systems – (Adopted on 5th January 1995) - Annex - Guidelines for The Performance and Testing Criteria and Surveys of High-Expansion Foam Concentrates for Fixed 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, according to paragraph 3.6.2(b.3).

  3.7.2 The test should be carried out with sea water at about 20°C. Simulated sea water 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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