8 Instrumentation, Measurements and Measurement Equipment
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1384 – Guidelines for the Testing and Approval of Fixed High-Expansion Foam Systems – (10 December 2010) - Annex – Guidelines for the Testing and Approval of Fized High-Expansion Foam Systems - Appendix 4 – Optional Small Scale Test Method for High–Expansion Foam Concentrates to be Used With Inside Air - 8 Instrumentation, Measurements and Measurement Equipment

8 Instrumentation, Measurements and Measurement Equipment

Parent topic: Appendix 4 – Optional Small Scale Test Method for High–Expansion Foam Concentrates to be Used With Inside Air

8.1 Gas temperature measurements

 The gas temperature inside the test compartment should be continuously measured and recorded during the tests. The individual thermocouples should be positioned as follows:

  • .1 one thermocouple 150 mm behind the foam generator; and

  • .2 five thermocouples, respectively, at vertical distances of 100 mm, 200 mm, 300 mm, 600 mm and 1,200 mm from the ceiling. The thermocouple tree should be positioned 500 mm from the front side wall (for informative reasons only).

 All thermocouples should be of type K (chromel-alumel) and made from 0.5 mm wire welded together.

8.2 Foam system and water pressure

  8.2.1 The system pressure at the inlet to the fire test compartment should be monitored using a pressure gauge.

  8.2.2 The pressure gauge should have an accuracy of ± 0.05 bar.

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