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Abstract When operating an LNG carrier, maintaining the internal temperature of LNG tanks is one of the most important factors. In order to transport cryogenic LNG, insulation panels are installed on the inner walls of the LNG tanks. Meanwhile, during the production process of the LNG tanks, the inner walls of the LNG tanks are not flat and can have flexion. If the insulation panels to be installed on the inner walls of the LNG tanks are not flat and their slopes are large, the insulation efficiency may decrease, and dynamic fatigue may increase. Therefore, wedges to support the insulation panels are installed on the inner walls of the LNG tanks.
In addition, mastic ropes are installed under the insulation panels to fill the gap between the inner walls and the insulation panels. In this process, if the mastic ropes are excessively used, the unnecessary cost is incurred. On the other hand, if the usage of the mastic ropes decreases, the insulation panels may be inclined, and the insulation efficiency may decrease. Therefore, in this study, we proposed an optimization method to minimize the total amount of mastic ropes used in the membrane-type LNG tanks while satisfying the flatness of the insulation panels within the allowable criteria. To verify the effectiveness of the proposed method, it was applied to the examples and the result was compared with the manual design. As a result, it was confirmed that the proposed method could reduce the usage of the mastic ropes by about 30% as compared with the manual design.
Publication Date 2022-11-07

List of Articles
번호 분류 제목 Publication Date
11 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Bo-Woo Nam, "Coupled Analysis of the LNG Offloading Operation Based on Multibody Dynamics", Proceedings of PRADS 2022, Dubrovnik, Croatia, 2022.10.09-13 2022-10-09
10 International Conference Ki-Su Kim, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "An Improved Method for the Evacuation Analysis of a Passenger Ship Considering Intermediate Flooding", Proceedings of PRADS 2022, Dubrovnik, Croatia, 2022.10.09-13 2022-10-09
9 International Conference Jin-Hyeok Kim, Myung-Il Roh, In-Chang Yeo, Ki-Su Kim, Min-Jae Oh, Sejin Oh, "Estimation Model of Hydrodynamic Performance Using Hull Form Variation and Deep Learning", Proceedings of PRADS 2022, Dubrovnik, Croatia, pp.??, 2022.10.09-13 2022-10-09
8 International Conference Do-Hyun Chun, Myung-Il Roh, Hye-Won Lee, Seung-Ho Ham, "A Method for Automatic Control of Cranes for Block Lifting in Shipyard", Proceedings of PRADS 2022, Dubrovnik, Croatia, pp. 64, 2022.10.09-13 file 2022-10-09
7 International Conference Jisang Ha, Myung-Il Roh, Ki-Su Kim, Min-Chul Kong, "Integrated Method for the Arrangement Design of a Ship for Implementing Digital Twin in Design", Proceedings of PRADS 2022, Dubrovnik, Croatia, 2022.10.09-13 file 2022-10-10
6 International Conference Min-Chul Kong, Myung-Il Roh, Jisang Ha, Eun Seok Jin, Donghun Yu, "Design of the Integrated System for the Safe Operation Based on Augmented Reality", Proceedings of PRADS 2022, Dubrovnik, Croatia, 2022.10.09-13 2022-10-12
5 International Conference Jin-Hyeok Kim, Myung-Il Roh, In-Chang Yeo, Ki-Su Kim, "Estimation of the Hydrodynamic Performance of the Parameterized Hull Forms Using Deep Learning", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-06
4 International Conference Yeongmin Jo, Myung-Il Roh, Hye-Won Lee, Donghun Yu, "A Ship Tracking Method under Dynamic Characteristic Changes with LSTM", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-06
3 International Conference In-Chang Yeo, Myung-Il Roh, Hye-Won Lee, "An Optimization Method of the Surround-View Camera System for Automatic Berthing of Ships", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-06
» International Conference Do-Hyun Chun, Myung-Il Roh, In-Chang Yeo, "Optimum Design of Membrane-type LNG Tanks for Installing Insulation", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-07
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