Integrity Management Process of Tension Leg Platforms

R. Sheppard, R. Spong, M. Sauls, P. Hosch, M. Danaczko, F. Puskar, S. Leverette
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Abstract

As the Gulf of Mexico (GOM) fleet of Tension Leg Platforms (TLPs) ages, the need for more explicit Integrity Management (IM) and life extension guidance, particularly for the tendons, has grown. Recent industry efforts have developed Structural Integrity Management (SIM) guidance for fixed and floating systems, but tendon-specific guidance is less detailed. The Bureau of Safety and Environmental Enforcement commissioned the study described in this paper to develop this guidance including providing greater definition of IM and life extension processes for tendon systems, and describing an approach for demonstrating the reliability of tendon systems subjected to fatigue degradation. Four primary objectives are addressed: 1) tendon IM, 2) tendon life extension, 3) tendon fatigue, and 4) tendon component post-service testing. These topics were addressed through the input of subject matter experts, interfacing with TLP operators, and developing analytical tools. The study looked at current industry practice for the design and management of tendon systems; how current SIM approaches can be applied to the unique features of TLP tendons; what are the critical features of tendons to be addressed as part of a life extension program; tendon fatigue factors of safety; how reliability approaches can be used to better define risks related to operating beyond the original service life; and how forensic testing of recovered tendon components can be used to gain a better understanding of tendon performance expectations.
张力腿平台完整性管理流程
随着墨西哥湾(GOM)张力腿平台(张力腿平台)的老化,对更明确的完整性管理(IM)和寿命延长指导的需求日益增长,尤其是对肌腱的需求。最近的行业努力已经为固定和浮动系统开发了结构完整性管理(SIM)指南,但针对肌腱的指南不太详细。安全与环境执法局委托进行了本文中描述的研究,以制定该指南,包括为肌腱系统提供更详细的IM和寿命延长过程定义,并描述了一种方法来证明肌腱系统在疲劳退化下的可靠性。本研究涉及四个主要目标:1)肌腱IM, 2)肌腱寿命延长,3)肌腱疲劳,4)肌腱组件服役后测试。这些问题通过主题专家的输入、与张力腿平台运营商的交互以及开发分析工具来解决。该研究着眼于当前肌腱系统设计和管理的行业实践;当前的SIM方法如何应用于足跖点肌腱的独特特征;作为延长生命计划的一部分,肌腱的关键特征是什么?肌腱疲劳安全系数;如何使用可靠性方法来更好地定义与超过原始使用寿命的操作相关的风险;以及如何使用复原肌腱组件的法医测试来更好地了解肌腱的性能预期。
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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