J. Ocean Eng. Technol. Search

CLOSE


J. Ocean Eng. Technol. > Volume 38(5); 2024 > Article
J. Ocean Eng. Technol. 2024;38(5):307-314.    
Published online October 25, 2024.
DOI: https://doi.org/10.26748/KSOE.2024.059   

A Study on the Structural Impact of FLNG Topside Piperack Module Enlargement
Eun-Hak Lee1  , Tak-Kee Lee2 
1Graduate Student, Department of Ocean Engineering, Gyeongsang National University, Tongyeong, Korea
2Professor, Department of Naval Architecture & Ocean Engineering, Gyeongsang National University, Tongyeong, Korea
Corresponding author:  Tak-Kee Lee, Tel: +82-55-772-9193, tklee@gnu.ac.kr
Received July 1, 2024   Revised August 7, 2024   Accepted September 13, 2024
© 2024 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Floating liquefied natural gas, Piperack, Relative deflection, Unity check, Reaction force, Topside module support (TMS), In-place analysis
Abstract
To minimize the production time of floating liquefied natural gas (FLNG) units, which are eco-friendly offshore structures, builders are exploring methods to extend the length of piperacks. This approach aims to reduce the number of installations and equipment required. In this study, a static stability analysis (in-place analysis) was conducted using the structural analysis computer system (SACS), a program for analyzing topside structures, to assess the effects of piperack enlargement. Two models were analyzed: the original piperack and a version with double the length. Both models were based on data from an existing FLNG unit, with identical environmental loads applied. The results showed that while relative displacement increased linearly with length, the stress did not follow the same linear pattern. However, stress levels in some braces at the base of the structure increased, indicating the need for larger structural members. From the perspective of in-place analysis, piperack enlargement appears feasible. However, further investigation, including fatigue analysis and assessments of operational and maintenance challenges, is recommended to confirm its long-term viability.


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY

Browse all articles >

PUBLICATION ETHICS
FOR CONTRIBUTORS
Editorial Office
President Office BD Rm. 1302, 13 Jungang-daero 180beon-gil, Dong-gu, Busan 48821, Republic of Korea
Tel: +82-51-759-0656    Fax: +82-51-759-0656    E-mail: ksoehj@ksoe.or.kr                

Copyright © 2024 by The Korean Society of Ocean Engineers.

Developed in M2PI

Close layer
prev next