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Open AccessArticle

Preventive Maintenance Topic Models for LNG Containment Systems of LNG Marine Carriers Using Dock Specifications

1
Division of Navigation & Information Systems, Mokpo National Maritime University, Mokpo 58628, Korea
2
Graduate School, Mokpo National Maritime University, Mokpo 58628, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(6), 1202; https://doi.org/10.3390/app9061202
Received: 17 February 2019 / Revised: 5 March 2019 / Accepted: 18 March 2019 / Published: 21 March 2019
(This article belongs to the Section Energy)
The high demand for liquefied natural gas (LNG) requires more LNG carriers (LNGCs) to be in operation. During transportation, there is a high risk due to the required extremely low temperatures and the explosive nature of LNG cargo. Moreover, when there is a lack of experience in operating old LNGCs, there is a serious concern regarding operational accidents. A systematic maintenance strategy, especially for LNG cargo containment systems, is crucial for maintaining safe LNG transportation at sea. The purpose of this study is to develop preventive LNG cargo containment system maintenance models by using LNGC dock specifications from LNGCs of various ages. The dock specifications from a conventional LNGC repairing dock were analyzed using natural language processing techniques in order to develop preventive maintenance models of the LNG cargo containment system. From these results, and by considering the ship’s age, it was found that for young LNGCs, the priority for repair should focus on checking routine consumable spare parts by tank inspections, whereas for older LNGCs, the focus should be on tank condition maintenance rather than on other facilities. These results are expected to be useful in the development of a maintenance strategy of preventive LNG cargo containment systems in maritime LNG transportation. View Full-Text
Keywords: preventive maintenance model; LNG cargo containment system; aging effect; dock specification; natural language processing preventive maintenance model; LNG cargo containment system; aging effect; dock specification; natural language processing
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MDPI and ACS Style

Youn, I.-H.; Kim, S.-C. Preventive Maintenance Topic Models for LNG Containment Systems of LNG Marine Carriers Using Dock Specifications. Appl. Sci. 2019, 9, 1202.

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