Ingangsdatum: 23-04-1992
1.1 - ApplicationThese Guidelines apply to the
foam concentrates for fixed low-expansion fire-extinguishing systems
required by SOLAS 74(83) Reg. 11-2/61 for oil tankers. These
Guidelines also apply to foam concentrates for fixed low-expansion
fire-extinguishing systems in machinery spaces according to SOLAS
74(83) Reg. 11-2/8.
1.2 -
DefinitionsFor the purpose of these
Guidelines the following definitions apply.
(a) Foam (fire fighting) : an aggregate of
air filled bubbles formed from an aqueous solution of a suitable
foam concentrate.
(b)
Foam solution: a solution of foam concentrate and water.
(c) Foam concentrate: the
liquid which, when mixed with water in the appropriate
concentration, gives a foam solution.
(d) Expansion ratio: the ratio of the
volume of foam to the volume of foam solution from which it was
made.
(e) Spreading
coefficient: a measurement of the ability of one liquid to
spontaneously spread across another.
(f) 25% (50%) drainage time: the time for
25% (50%) of the liquid content of a foam to drain out.
(g) Gentle application:
application of foam to the surface of a liquid fuel via a backboard,
tank wall or other surface.
(h) Sediment: insoluble particles in the foam
concentrate.