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Value of information-based inspection planning for offshore structures

机译:海上结构信息化检查规划的价值

摘要

Asset integrity and management is an important part of the oil and gas industry especially for existing offshore structures. With declining oil price, the production rate is an important factor to be maintained that makes integrity of the structures one of the main concerns. Reliability based and risk- based inspection (RRBI) constitutes an efficient method to optimize inspection planning. Basing the inspection planning on pre-posterior Bayesian decision analysis and especially a Value of Information analysis allows to explicitly quantify the expected benefits, costs and risks associated with each inspection strategy. A simplified and generic risk-based inspection planning utilizing pre-posterior Bayesian decision analysis had been proposed by Faber et al. [1] and Straub [2]. This paper provides considerations on the theoretical background and a Value of Information analysis-based inspection planning. The paper will start out with a review of the state-of-art RBI planning procedure based on Bayesian decision theory and its application in offshore structure integrity management. An example of the Value of Information approach is illustrated and it is pointed to further research challenges.
机译:资产完整性和管理是石油和天然气行业的重要组成部分,尤其是对于现有的海上结构而言。随着油价的下降,生产率是要保持的重要因素,这使结构的完整性成为主要问题之一。基于可靠性和基于风险的检查(RRBI)构成了优化检查计划的有效方法。基于前后贝叶斯决策分析的检查计划,尤其是“信息价值”分析,可以明确量化与每个检查策略相关的预期收益,成本和风险。 Faber等人提出了一种使用后验贝叶斯决策分析的简化的,基于风险的通用检查计划。 [1]和Straub [2]。本文提供了有关理论背景和基于信息分析价值的检验计划的考虑。本文将首先回顾基于贝叶斯决策理论的最新RBI计划程序及其在海上结构完整性管理中的应用。举例说明了信息价值方法,并指出了进一步的研究挑战。

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