Development of the KC-1 LNG Cargo Containment System (eBook)

Published Date

January 2006

Development of the KC-1 LNG Cargo Containment System (eBook)

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This paper describes the development of a proprietary new LNG cargo containment system from KOGAS. (15pp)

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Korea Gas Corporation (KOGAS) is developing a new LNG cargo containment system of corrugated membrane type called the KC-1, in collaboration with Korean shipyards. The KC-1 project is based on the KOGAS' Membrane Containment System technology used for the land-based LNG storage tanks. KOGAS had built a pilot LNG storage tank of 1,300 m3 in 2001 employing in-house membrane and insulation materials and has tested its performance and reliability in cryogenic operating conditions. The membrane containment system is being applied to the 200,000 m3 in-ground LNG storage tanks Nos. 19 and 20 in the KOGAS' Incheon LNG Receiving Terminal.

The KC-1 system uses a 1.5 mm thick corrugated stainless steel 304L membrane as the primary barrier and the secondary barrier, I-graded polyurethane foam having a density of 115 kg/m3 as the insulating material. The basic concept of the KC-1 system is to minimize the effect on the insulation system by the hull and primary barrier deformation. For this purpose, no insulation panels are bonded to the inner hull. The membrane panels are prefabricated at a shop by plasma arc butt welding and installed at yards by plasma arc lap welding. The KC-1 membrane system features no welds on the corrugations and hereby considerably shortens welding time and improves welding automation.

KOGAS will apply the KC-1 system to their vessels for the coming LNG import which the delivery is forecasted around 2011. The Classification approval of both principle and design and the erection of a mock-up tank to verify the buildability are now in progress.

This paper introduces the development progress and the concept of the KC-1 system.

Paper Delivered by:
Young-myung Yang
Ihn-soo Yoon
Sung-hee Choi
(all from the Korea Gas Corporation)

Prepared for:
Gastech Abu Dhabi 2006

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: Development of the KC-1 LNG Cargo Containment System (eBook)
Product Code: 4433g126
Published Date: January 2006

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