含未焊透缺陷工业管道的强度分析与安全评定

文章采用分析设计方法对2条被《在用工业管道定期检验规程》定级为4级的含未焊透缺陷判废工业管道进行了有限元强度数值计算，同时，利用基于内压／弯矩／扭矩复杂载荷作用下的含未焊透缺陷压力管道安全评定方法对其进行了安全评价。通过强度校核和安全评定结果表明：在低应力情况下，上述4级未焊透缺陷不影响管道的安全运行，指出了《在用压力管道定期检验规程》安全状况等级划分方法的保守性，对于最大限度地发挥在用工业管道的使用效能、提高安全监管的科学性和有效性具有重要意义。图11表7参8

Strength Analysis and Safety Assessment for Industrial Pipes Scored Containing Incomplete Welding Defects

The strength of failure industrial pipes containing incomplete welding defects scored 4 degree by regular inspect criterion for in-service industrial pipelines finite-element strength value has been calculated and checked with design by analysis method, meanwhile, their safety are assessed by the safety assessment method for pressure pipe containing incomplete welding defects based on combined bending,torsion and internal pressure loadings. Through strength checking and safety assessment, the results show that the above incomplete welding defects scored 4 degree did not affect the safety of pipes in the low stress level, and the conservation of safety divided method in Regular inspect criterion for in-service industrial pipelines has been disclosured. What is mentioned in the paper makes good sense for exerting the capbility of in-service industrial pressure pipes for the most degree and improving the science and efficiency for safety management and supervision. Ch, 11 fig. 7 tab. 8 ref. ]