Liquefied Gas Transfer At Sea (eBook)

Published Date

January 2002

Liquefied Gas Transfer At Sea (eBook)

(Excludes any applicable taxes)

This paper describes the state of the art of the technology of liquefied gas transfer at sea. (30pp)

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Traditional jetties are all based on the same design: a loading platform, several mooring and breasting dolphins and a trestle linking the jetty to the shore and supporting the transfer lines. These jetties consist of huge structures extending over 350 meters overall length with a cost becoming largely prohibitive as soon as the trestle length exceeds one or two kilometres. Due to the fact that these jetties are mono-directional, they require a sheltered area to avoid that the mooring forces become too high. Furthermore, many jetties require a turning basin and, often, a navigation channel. Four tugs are necessary to perform the marine operations. Today the new LNG plants (vaporisation or liquefaction) are much more widely dispersed in the world and are accompanied with siting problems. In some cases the siting constraints, such as congested areas or shallow waters, impose the jetties to be located at some more remote areas and further weather exposed locations.

In many cases a breakwater is necessary. Many gas companies have been very active in trying to reduce the cost of the LNG chain including bigger storage tanks, bigger trains, bigger and more efficient ships, etc., but so far nothing substantial was done with respect to the transfer facilities themselves. For this reason TotalFinaElf, Gaz de France, Euroout, since 1999, an extensive programme of studies of new architectures for LNG transfer (and other liquefied gases) together with an ambitious programme of development and test of the main cryogenic components like the subsea lines, the transfer hoses and the connecting and disconnecting systems. These innovative solutions are presently in the preindustrial stage and the first half of 2003 should see the termination of the studies and tests of components through various associations and Joint Industrial Programs (JIP). These transfer technologies (and more specifically the cryogenic hose with the connector) are also suitable for offshore LNG transfer such as tandem offloading.

This paper therefore gives the state of the art of the technology of liquefied gas transfer at sea. Priority in these developments has been given on non-dedicated ships and to safety levels equal to or above those of the traditional jetties

Paper Delivered by:
Bertrand Lanquetin (TotalFinaElf)
Pierre-Luc Lanteri-Minet (Gaz de France)
Bernard Dupont (EURODIM)

Prepared for:
Gastech Doha 2002

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: Liquefied Gas Transfer At Sea (eBook)
Product Code: 4433g151
Published Date: January 2002

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