石油和天然气工业.管道传输系统.基于可靠性的极限状态法

[中文适用范围]： 本国际标准规定了石油和天然气行业使用 ISO 13623 允许的基于可靠性的极限状态方法进行管道设计、运行和重新鉴定的功能要求和原则。 基于可靠性的极限状态方法提供了一种系统的方法来预测管道设计和操作的安全性。 本国际标准对 ISO 13623 进行了补充，可用于 ISO 13623 未提供具体指导且可应用极限状态方法的情况，例如但不限于新概念的鉴定，例如应用新技术时或者对于行业经验有限的设计方案， -- 由于设计基础发生变化而重新鉴定管道，例如延长使用寿命，其中可能包括由于改进完整性监控和操作经验而减少不确定性， -- 崩溃深水中的外部压力， -- 极端载荷，例如地震载荷（例如在断层交叉处），冰载荷（例如冰龙骨的冲击）， -- 基于应变的标准可能适用的情况。 本文件适用于石油和天然气工业中使用的陆地和海上刚性金属管道。 [外文原描述]： ISO 16708:2006 specifies the functional requirements and principles for design, operation and re-qualification of pipelines in the petroleum and natural gas industries using reliability based limit state methods as permitted by ISO 13623. Reliability-based limit state methods provide a systematic way to predict pipeline safety in design and operation. ISO 16708:2006 supplements ISO 13623 and can be used in cases where ISO 13623 does not provide specific guidance and where limit states methods can be applied, such as, but not limited to - qualification of new concepts, e.g. when new technology is applied or for design scenarios where industry experience is limited, - re-qualification of the pipeline due to a changed design basis, such as service-life extension, which can include reduced uncertainties due to improved integrity monitoring and operational experience, - collapse under external pressure in deep water, - extreme loads, such as seismic loads (e.g. at a fault crossing), ice loads (e.g. by impact from ice keels), - situations where strain-based criteria can be appropriate. ISO 16708:2006 applies to rigid metallic pipelines on-land and offshore used in the petroleum and natural gas industries.