Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, Han-Sung Kim, Hyunsik Ahn, "Weight-estimation Method of FPSO Topsides Considering the Work Breakdown Structure", Journal of Offshore Mechanics and Arctic Engineering, Vol. 40, No. 1, pp. 1-10, 2018.02.01

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Abstract	With the recent international economic downturn, most engineering, procurement, and construction (EPC) contractors are incurring deficits in their floating, production, storage, and offloading unit (FPSO) projects. Numerous reasons underpin these situations. One of the most important reasons is the cost-estimation failure. The cost estimation is the key contractual point and mainly depends on a weight estimation of the FPSO topsides. Because the topsides contain a lot of equipment and complex structures, it is very difficult to make an estimation at the contractual stage. To overcome this problem, many methods have been proposed to estimate the weight of offshore topsides; however, most of the methods involve the top–down approach, making it difficult to obtain a sufficiently accurate prediction for field-work usage in terms of the weight estimation. Therefore, a work breakdown structure (WBS) for the performance of the weight-estimation process is proposed in this study. Using the WBS of the FPSO topsides, the corresponding presentation of the weight-estimation process makes the process usable in the field work regarding the WBS-item estimations. Accordingly, estimates of the detailed units (disciplines, modules, and areas) inside the topside that were previously not possible were performed. In addition, a prototype program was developed using the proposed method, and the applicability of the proposed method was evaluated through the application of three projects.
Publication Date	2018-02-01
Role	Corresponding Author
Category	SCIE
Impact Factor	0.993

Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, Han-Sung Kim, Hyunsik Ahn, "Weight-estimation Method of FPSO Topsides Considering the Work Breakdown Structure", Journal of Offshore Mechanics and Arctic Engineering, Vol. 140, No. 1, pp. 1-10, 2018.02.01

Prev Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, “Case Study of D... Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, “Case Study of D... 2017.07.13by 구남국, 노명일, 차주환, "최적 러그 배치를 위한 골리앗 크레인의 와이어 로프와 선체 블록간의 동적 접촉력 계산", 한국전산구조공학회 논문집, Vol. 25, No. 5, pp. 375-380, 2012.10.01 Next 구남국, 노명일, 차주환, "최적 러그 배치를 위한 골리앗 크레인의 와이어 로프와 선체 블록간의 동적 접촉력 계산", 한국전산구조공학회 논문집, Vol. 25, No. 5, pp. 375-380, 2012.10.01 2013.12.04by SyDLab

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Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, Han-Sung Kim, Hyunsik Ahn, "Weight-estimation Method of FPSO Topsides Considering the Work Breakdown Structure", Journal of Offshore Mechanics and Arctic Engineering, Vol. 40, No. 1, pp. 1-10, 2018.02.01

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Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, Han-Sung Kim, Hyunsik Ahn, "Weight-estimation Method of FPSO Topsides Considering the Work Breakdown Structure", Journal of Offshore Mechanics and Arctic Engineering, Vol. 40, No. 1, pp. 1-10, 2018.02.01

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