介绍了四种体积型腐蚀缺陷的评价方法,对比分析了其特点及适用性.结论为:ANSI/ASME-B31G适用于管材等级较低、管道服役年限长的老管道的评估,半经验、偏保守;DNV法可进行单个缺陷、相互作用的缺陷和复杂形状缺陷的评估;SY/T6151-1995法评价过程较复杂,但评价结果较准确;API RP 579-2000是目前较先进、较精确的分级评估方法,我国的SY/T6477-2000等效于它.
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