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Top LNG ship takes shape in Shanghai
By Li Jing (China Daily)
Updated: 2005-07-18 05:30

Wang said the LNG vessel is double-hulled with two layers of membranes made of Invar, a metal high in nickel content that does not contract under low temperatures.

The liquefied gas is carried at atmospheric pressure in the specially insulated tanks, referred to as the 'cargo containment system', inside the inner hull, Wang explained.

He said that even a worker's sneeze or sweating could harm the Invar-melting process because one drop of foreign fluid on the 0.7-millimetre-thick membranes could lead to a leak that is invisible to the naked eye.

Apart from the first LNG vessel, Hudong-Zhonghua now has three LNG vessel orders in hand with a possible fourth to come, Wang said. Construction on the second one, which is also being made for the Guangdong project, will soon be carried out.

The world is facing a LNG boom, and China is moving to incorporate natural gas expansion into its energy strategy in order to be environmentally friendlier, relieve energy security concerns and improve energy efficiency.

Xu Kai, general manager of the Nantong Cosco Khi Ship Engineering Co Ltd, said China plans to build several more LNG terminals in provinces such as Fujian, Zhejiang, Jiangsu and Shandong.

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