Fire Control Systems for LNG (eBook)

Published Date

January 1994

Fire Control Systems for LNG (eBook)

$19.11
(Excludes any applicable taxes)

This paper looks at the particular problems associated with cryogenic fires and advises on ways of controlling them. (7pp)

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LNG vapour forms a highly flammable mixture with air, and so an accidental spillage in the bunded (diked) region around a bulk storage tank poses a severe cryogenic fire hazard. The most widely accepted means of controlling such hazards is by using high expansion foam. Such cryogenic liquids are in fact gases at normal ambient temperature and pressure, but are stored at very low temperatures of around -164°C to reduce them into their liquid, rather than gaseous state. Clearly this makes processing storage and transportation for distribution easier and more cost effective.

However, LNG is 83 - 99% Methane which if ignited generates vast quantities of heat radiation very quickly (93,000 kcal/m3/h4 typically twice the heat produced by an equivalent quantity of gasolene/petrol. Unlike petrol the volume increase of LNG gas from it's liquid phase is around 600 fold. Consequently, any accidental leakage of LNG boils instantly, gaining heat from it's surrounding environment, the ground, concrete, pipework and even the air into which it is rapidly evaporating.

Paper delivered by:
Mike Willson
(Angus Fire, UK)

Prepared for:
Gastech Kuala Lumpur 1994

Title: Fire Control Systems for LNG (eBook)
Product Code: 4433g075
Published Date: January 1994

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