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Reliability evaluation of a LNGC insulation system with a metallic secondary barrier

机译:具有金属二级屏障的LNGC绝缘系统的可靠性评估

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This study examined the fatigue performance of a LNG (Liquefied Natural Gas) insulation system with a newly developed metallic secondary barrier used in Mark-III type LNG carriers. In particular, the conventional secondary barrier used in Mark-III type carries a risk of leakage and fatigue failure owing to the thermal and cyclic loads. In this respect, the secondary barrier requires superior tightness, high strength, and fatigue performance at cryogenic temperatures. To improve the tightness and strength, the metallic secondary barrier was constituted of two aluminum foils, 0.08 mm in thickness, covered with glass fabric. A series of fatigue tests for the newly secondary barrier was carried out at room and cryogenic temperatures. In addition, the durability of the new secondary barrier was confirmed by a comparison of the fatigue performance of the conventional secondary barrier with that of the new proposed secondary barrier. (C) 2017 Elsevier Ltd. All rights reserved.
机译:这项研究研究了Mark-III型液化天然气运输船中带有新开发的金属二级屏障的液化天然气绝缘系统的疲劳性能。尤其是,在Mark-III型中使用的常规二级屏障由于热负荷和循环负荷而具有泄漏和疲劳破坏的风险。在这方面,第二屏障要求在低温下具有优异的密封性,高强度和疲劳性能。为了提高密封性和强度,金属二级屏障由两块铝箔构成,厚度为0.08毫米,并覆盖有玻璃纤维。在室温和低温下对新的次要屏障进行了一系列疲劳测试。另外,通过将常规二级屏障与新提出的二级屏障的疲劳性能进行比较,证实了新型二级屏障的耐久性。 (C)2017 Elsevier Ltd.保留所有权利。

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