Foam Expansion Ratios and Flowrates. The Best Solutions for LNG Fires (eBook)

Published Date

January 1994

Foam Expansion Ratios and Flowrates. The Best Solutions for LNG Fires (eBook)

(Excludes any applicable taxes)

This paper describes trials to find the optimum flowrates and expansion ratios for fighting LNG fires (7pp)

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Between September 1983 and March 1984, the Cryogenic Studies Section carried out a series of large scale fire reduction trials whose aim was to study the effect of different foam expansion ratios and flowrates on the radiation of LNG fires.

A circular bund with a diameter of 16 m (200 m2 surface) was filled up to a height of 20 cm with LNG. The LNG pool was then ignited and one or more foam generators were put into action to reduce the intensity of the fire. The results show that expansion ratios close to 300 produce the shortest foam filling periods, whereas expansion ratios of about 150 provide optimal reduction of the fires. Furthermore, the foam destruction speed at steady state is roughly proportional to the expansion ratio. The trials conducted demonstrate that certain rules are not adapted since they encourage the use of high expansion ratios to the detriment of safety considerations.

Paper delivered by:
J. C. Le Diraison
Dominique Nedelka
(both of Gaz de France, France)

Prepared for:
Gastech Kuala Lumpur 1994

For over 45 years, the Gastech Exhibition & Conference has been at the forefront of the international gas and LNG market. This world-renowned event is regarded as the most significant meeting place for gas and LNG professionals, where the global industry gathers to do business.

Gastech hosts major IOCs, NOC’s, global utility companies, EPC contractors, shipbuilders, pipeline companies, manufacturers, distributors, technology and service providers, all who play an active role in the global energy value chain.

Title: Foam Expansion Ratios and Flowrates. The Best Solutions for LNG Fires (eBook)
Product Code: 4433G076
Published Date: January 1994

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