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Assessment method for remaining strength of corroded pipeline and its application
Author(s): 
Pages: 125-128
Year: Issue:  6
Journal: ACTA PETROLEI SINICA

Keyword:  腐蚀管道剩余强度腐蚀缺陷评价标准评价公式;
Abstract: 分析了管道腐蚀缺陷各种评价方法的理论基础,导出了相应的评价方法的评价公式.将现有的标准归纳为3种基本的准则,即B31G准则、API 579准则和DNV RP-F101准则.理论和数值分析表明:B31G准则评价的保守性低于API 579准则.在单一荷载下,3种准则的保守性从高到低依次为API 579准则、B31G准则、DNV RP-F101准则,评价复杂程度从高到低依次为API 579准则、DNV RP-F101准则和B31G准则.鉴于大多数管段主要在单一内压载荷下运行,为了降低评价的保守性,简化评价过程,对于单一荷载和简单缺陷,腐蚀管道的剩余强度仍按B31G准则或DNV RP-F101准则进行评价.
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