This article introduces the defects evaluation method for oil and gas pipeline, and analyzes the R6 method defects evaluation process, meanwhile the typical defects are evaluated.
本文重点介绍了石油天然气输送管道缺陷评定方法，简要分析了应用R6方法的缺陷评定过程并对典型缺陷进行了评定。
R6 failure assessment diagram method belongs to the approximate graphical method, its assessment result is much conservative.
R6的失效评定图法属近似的图解评定方法，评定结果最为保守；
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