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首页> 外文会议>CORROSION/2004 Research Topical Symposium on Corrosion Modeling for Assessing the Condition of Oil and Gas Pipelines; 2004; >Pipeline Corrosion Direct Assessment
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Pipeline Corrosion Direct Assessment

机译：管道腐蚀直接评估

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摘要

The pipeline industry, undergoing significant changes because of revisions to safety regulations, has responded by formalizing a method to assess the integrity of pipelines with respect to corrosion damage. This method, termed Direct Assessment (DA), is intended to serve as an integrity verification tool, playing the same role within pipeline integrity management as in-line inspection and hydrotesting (either as a replacement or as a complement). The method relies on 1) identifying a mechanism for corrosion susceptibility, 2) detecting a property associated with this mechanism through an indirect measurement, 3) performing a direct observation of the pipe (by excavation), and 4) correcting for any discrepancies between the predictions and observations. DA processes have been developed for external corrosion, internal corrosion, and stress corrosion cracking. Although the underlying principles of DA are familiar and the individual detection tools are well established, the formalized approach for the purpose of integrity verification has only recently been developed. DA is considered effective, but gaps in the implementation of the technology still exist that require additional research. In addition, the future of Direct Assessment is predicted to follow the evolution of pipeline integrity management to a more quantitative approach.
机译：由于修订了安全法规，导致管道行业发生了重大变化，因此，对管道行业做出了回应，形式化了一种评估管道在腐蚀损害方面的完整性的方法。这种称为直接评估（DA）的方法旨在用作完整性验证工具，在管道完整性管理中扮演与在线检查和水压测试（替代或补充）相同的角色。该方法依赖于1）识别腐蚀敏感性的机制，2）通过间接测量检测与该机制相关的特性，3）对管道进行直接观察（通过挖掘）和4）校正管道之间的任何差异。预测和观察。已经开发了用于外部腐蚀，内部腐蚀和应力腐蚀开裂的DA工艺。尽管DA的基本原理很熟悉，并且各个检测工具都已经很好地建立了，但是用于完整性验证的形式化方法只是最近才被开发出来。 DA被认为是有效的，但是该技术的实施方面仍然存在差距，需要进一步的研究。此外，预计直接评估的未来将跟随管道完整性管理向更量化方法的演进。

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