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首页> 外文会议>Proceedings of the 28th international conference on ocean, offshore and arctic engineering 2009 >ENVIRONMENTAL EFFECT ON FATIGUE LIFE OF FPSO HULL STRUCTURES
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ENVIRONMENTAL EFFECT ON FATIGUE LIFE OF FPSO HULL STRUCTURES

机译：FPSO船体结构疲劳寿命的环境影响

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摘要

Floating production, storage and offloading systems (FPSOs) have been widely used in the development of offshore oil and gas fields because of their many attractive features. These features include a large work area and storage capacity, mobility (if desired), relatively low construction cost and good stability. They are mostly ship shaped, either converted from existing tankers or purpose built. The hull structural scantling design for tankers may be applicable to FPSOs; however, FPSOs have their own unique characteristics. FPSOs are located at specific locations with a dynamic loading that is quite different from that arising from unrestricted ocean service conditions for tankers. It is also noted that the wave conditions in recent FPSO applications may be very complicated when operating in areas such as those offshore West Africa and offshore Brazil where both seas and swells exist and propagate in different directions. In this paper, the unique FPSO operational aspects, especially the load assessment due to on-site environments will be described. The methodology of handling complicated wave conditions in fatigue assessment will be addressed. Special considerations for converted FPSOs, which need to take into account their operational history as a trading tanker and low cycle fatigue due to FPSO operations, will also be introduced. Case studies will be presented and appropriate analysis methodology will be summarized. The methodology has also been adopted by ABS Guide, see ABS [1].
机译：浮动生产，存储和卸载系统（FPSO）具有许多吸引人的功能，因此已广泛用于海上油气田的开发。这些特征包括较大的工作区域和存储容量，移动性（如果需要），相对较低的建造成本和良好的稳定性。它们大多是船形的，可以是从现有油轮改装而成的，也可以是专用的。液货船的船体结构尺寸设计可适用于FPSO。但是，FPSO具有自己的独特特征。 FPSO位于特定位置，其动态负载与油轮不受限制的海洋服务条件所产生的动态负载完全不同。还应注意，当在诸如西非近海和巴西近海等存在海浪的地区并以不同方向传播时，最近的FPSO应用中的波浪条件可能会非常复杂。在本文中，将描述FPSO独特的操作方面，尤其是现场环境导致的负载评估。将讨论在疲劳评估中处理复杂波浪条件的方法。还将对转换后的FPSO进行特殊考虑，需要考虑其作为贸易油轮的运营历史以及由于FPSO运营而导致的低周期疲劳。将介绍案例研究并总结适当的分析方法。该方法也已被ABS指南采用，请参见ABS [1]。

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