为确保油气管道的安全运行，有必要对新建管道和在役老龄管道系统进行长期检测和维修优化，使得在检测及维修费用与可靠性之间达到最佳。

In order to ensure oil and gas pipeline safety operation, it is necessary for the building pipeline and existing aging one to make inspection & maintenance costs and reliability optimization.

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老龄管网的完整性维修是管道输送公司的主要任务。

The integrity maintenance of old pipeline network is a major task for pipeline transportation company.

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油气管道随着服役时间的增加正趋于老龄化，管道出现裂纹现象是重要特征之一，它影响了管道的完整性。

Oil and gas pipelines have been aged as time going on. The pipeline crack is an important feature, which influences the integrity of the pipeline.

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