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Volume 17, Issue 33 (5-2021)                   Marine Engineering 2021, 17(33): 37-52 | Back to browse issues page

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Hasanvand E, Edalat P. Comparison of Dynamic Response of Chinese Lantern and Lazy S Riser Configurations Used in CALM Oil Terminal. Marine Engineering 2021; 17 (33) :37-52
URL: http://marine-eng.ir/article-1-857-en.html
Comparison of Dynamic Response of Chinese Lantern and Lazy S Riser Configurations Used in CALM Oil Terminal
Esmaeil Hasanvand1 , Pedram Edalat * 2
1- Offshore Structural Engineering, Petroleum University of Technology, Abadan, Iran
2- Mechanical Engineering Department, Petroleum University of Technology, Abadan
Abstract:   (3055 Views)
The risers are one of the most important components of the CALM oil terminal during the unloading/loading operations of tankers, which are used in two common configurations, including Chinese Lantern and Lazy S. It is common to not consider the interaction between these riser configurations and the mooring system. Therefore, the purpose of this paper is to compare the permissible horizontal displacement range or SAFOP of each of these risers in interaction with the mooring system and also to compare the dynamic response of these risers under operating conditions using OrcaFlex software with Persian Gulf environmental conditions in 16 coordinate directions. The results show that the Chinese Lantern configuration performs better in terms of SAFOP than Lazy S. The results also show that in the most critical case, the maximum tension created in the PLEM is 7% higher in the riser with the Lazy S configuration than in the riser with the Chinese lantern configuration. However, the maximum bending moment created in the riser with the Chinese Lantern configuration is 73% higher than the riser with the Lazy S configuration.
Keywords: Oil Terminal, CALM, Chinese Lantern configuration, Lazy S configuration, OrcaFlex
Full-Text [PDF 2640 kb]   (1942 Downloads)    
Type of Study: Research Paper | Subject: Offshore Structure
Received: 2020/09/11 | Accepted: 2021/02/14
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