MSC.1/Circ.1312 – Foam Concentrates for Fixed Fire-Extinguishing Systems – Set C

Source: MSC.1/Circular.1312 – Revised Guidelines for the Performance and Testing Criteria, and Surveys of Foam Concentrates for Fixed Fire-Extinguishing Systems (10 June 2009), Annex.
Reference: imorules.com – MSC.1/Circ.1312

Question 4 of 10

4. The polyethylene tube used in the freezing and thawing test is approximately:

A) 65 mm in diameter and 400 mm long, open at both ends B) 10 mm in diameter and 400 mm long, sealed and weighted at one end C) 10 mm in diameter and 150 mm long, sealed at both ends D) 25 mm in diameter and 500 mm long, weighted at both ends

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