Korea Gas LNG containment system approved
Korea Gas Corp (KOGAS), the world’s largest LNG importer, has received extended design approval from the American Bureau of Shipping (ABS) for the KC-1 LNG cargo containment system.
The new corrugated membrane type will be installed on all newbuild LNG carrier on order for KOGAS. The company developed the design, based on land-based LNG storage tanks, in cooperation with DSME, Samsung Heavy Industries and Hyundai Heavy Industries shipyards in South Korea.
The KC-1 system aims to minimise the effect that hull and primary barrier deformation has on the insulation system. It uses 1.5mm thick corrugated stainless steel 304L membrane as the primary and secondary barriers, and polyurethane foam with a density of 115kg/m3 as the insulating material.
The membrane technology has been tested for performance and reliability in cryogenic operating conditions and is being applied to 200,000m3 in-ground LNG storage tanks in the KOGAS’s LNG Receiving Terminal in Incheon.
ABS’ work included a sloshing evaluation as part of the structural strength assessment of the new containment system. The pump tower design and sloshing analyses have been reviewed in accordance with ABS guidance and other applicable industry standards.
Dr Young-Myung Yang, executive vice president and chief technology officer of research and design at KOGAS, said: "We are delighted to have been granted final design approval. We have been working closely with ABS for nearly a decade to conduct preliminary safety reviews and obtain design approval for this new LNG technology."
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