A New and Effective System for Leak Detection in LNG Tank Insulation (eBook)

Published Date

January 1996

A New and Effective System for Leak Detection in LNG Tank Insulation (eBook)

(Excludes any applicable taxes)

This paper describes a new leak detection system that meets the IMO gas code requirements (12pp)

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In the case of a leak in the containment system of a ship carrying dangerous liquid cargo at a temperature below –55°, there is no practical way to stop it while the ship is loaded. As a consequence, monitoring containment systems for such a vessel are of utmost importance since a leak in containment system is not only a potential fire or explosive hazard, it is also a potential danger for the ship's structure which could be locally subject to brittle fracture.

For this purpose, IMO gas code requires, among other safety means, all ships designed for transportation of flammable or explosive products at temperatures below - 55° (which is the case for LNG ships) to have specific permanent instrumentation fitted for monitoring temperature and detecting gas leakages.

This instrumentation should give reading at regular intervals (up to 30 minutes maximum for gas detection) and send warning when preset levels are exceeded (the lowest temperature for which the hull steel is suitable, when monitoring temperature, or 30% of lower flammable limit for gas detection for example).

Paper delivered by:
Michel Garguet (Chantiers de L'Atlantique)
Roger Courtnay (Chantiers de L'Atlantique)
Michael Jehanno (Chantiers de L'Atlantique)
Carole Meunier (Bertin et Cie)

Prepared for:
Gastech Vienna 1996

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: A New and Effective System for Leak Detection in LNG Tank Insulation (eBook)
Product Code: 4433g026
Published Date: January 1996

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