Downtime cost analysis of offloading operations under irregular waves in Malaysian waters

IF 0.7 Q4 ENGINEERING, OCEAN

Ocean Systems Engineering-An International Journal Pub Date : 2020-06-01 DOI:10.12989/OSE.2020.10.2.131

M. S. Patel, M. S. Liew, Z. Mustaffa, Abdurrasheed Said Abdurasheed, A. Whyte

引用次数: 2

Abstract

The objective of this study was to evaluate the downtime cost of side-by-side ofﬂoading operations in Malaysian waters. With the help of a numerical time domain tool, the structure and cable response of moored FPSO vessel was simulated for heading and beam sea-states under irregular waves. The weather downtime was assessed by comparing the response under operational wave condition with the pre deﬁned industrial safe ofﬂoading criteria. Additionally, two cases of cable failure were simulated for each sea-state. The novel study on downtime cost was presented for three different location of Malaysia subcontinent for which the location speciﬁc wave scatter diagram facilitated to estimate the probability of occurrence of operational wave condition. It was concluded that an unpredictable increment in wave height by 0.5 m can signiﬁcantly impact the production cost.

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马来西亚海域不规则波浪下卸载作业的停机成本分析

本研究的目的是评估马来西亚水域并排装载作业的停机成本。利用数值时域工具，模拟了系泊浮式生产储油船在不规则波浪作用下的航向和波束海况下的结构和缆索响应。通过将运行波浪条件下的响应与预先确定的工业安全装载标准进行比较来评估天气停机时间。此外，还模拟了每种海况下的两种电缆故障情况。针对马来西亚次大陆的三个不同地点，提出了一项关于停机成本的新研究，该地点的特定波浪散点图有助于估计运行波浪条件发生的概率。得出的结论是，波浪高度不可预测地增加0.5米会显著影响生产成本。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ocean Systems Engineering-An International Journal ENGINEERING, OCEAN-

自引率

22.20%

发文量

期刊介绍： The OCEAN SYSTEMS ENGINEERING focuses on the new research and development efforts to advance the understanding of sciences and technologies in ocean systems engineering. The main subject of the journal is the multi-disciplinary engineering of ocean systems. Areas covered by the journal include; * Undersea technologies: AUVs, submersible robot, manned/unmanned submersibles, remotely operated underwater vehicle, sensors, instrumentation, measurement, and ocean observing systems; * Ocean systems technologies: ocean structures and structural systems, design and production, ocean process and plant, fatigue, fracture, reliability and risk analysis, dynamics of ocean structure system, probabilistic dynamics analysis, fluid-structure interaction, ship motion and mooring system, and port engineering; * Ocean hydrodynamics and ocean renewable energy, wave mechanics, buoyancy and stability, sloshing, slamming, and seakeeping; * Multi-physics based engineering analysis, design and testing: underwater explosions and their effects on ocean vehicle systems, equipments, and surface ships, survivability and vulnerability, shock, impact and vibration; * Modeling and simulations; * Underwater acoustics technologies.