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http://dx.doi.org/10.3744/SNAK.2017.54.5.361

On the New Design of Liquid Dome Chair in Membrane Type LNG Carrier  

Kim, Jeong-Hwan (Department of Naval Architecture and Ocean Engineering, College of Engineering, Inha University)
Kim, Yooil (Department of Naval Architecture and Ocean Engineering, College of Engineering, Inha University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.54, no.5, 2017 , pp. 361-367 More about this Journal
Abstract
A membrane type LNG cargo tank is equipped with a pump tower and a liquid dome for loading and unloading of LNG. However, the membrane running continuously on the tank wall to prevent leakage of LNG is interrupted by the liquid dome, hence care should be taken in the design of liquid dome and its substructures. In case of GTT NO96 membrane type cargo containment system, chair structure is arranged along the periphery of the liquid dome targeting to support the membrane which is exposed to the both hull girder and thermal load. This paper proposes a new and simple chair structure, which outperforms traditional design from productivity point of view maintaining same level of structural safety. Strength assessment on the new design was performed to guarantee the structural safety of the new design, which includes strength, fatigue and crack propagation analysis.
Keywords
Membrane type LNG cargo tank; Pump tower; Liquid dome; Chair structure; GTT NO96 system;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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