含超标气孔缺陷的在用工业管道安全评定方法

Safety Assessment Method With Industrial Pipeline Containing Excessive Porosity Defects

对国内外承压设备缺陷安全评定技术发展现状与动态进行了分析,并以某化工装置为例,对在用工业管道全面检验中发现的气孔超标缺陷按GB/T 19624《在用含缺陷压力容器安全评定》标准进行评定,给出评定的方法和步骤。建议在《在用工业管道定期检验规程》修订时,对一些疸管道,例如腐蚀、无疲劳等疸管道,合理放松对于接焊缝非深孔型气孔缺陷的评估,最大限度减少单位停机时间,降低运行的成本。

The domestic and international pressure equipment safety defect assessment technology development status and dynamic analyzes,and a chemical plant,for example,to excessive porosity defects in the pipe industry with a comprehensive test found by GB/T 19624“in containing safety assessment“standard assessment,assessment methods and procedures are given defective pressure vessel.We recommend“In the industrial pipe with periodic inspection procedures” revision,some jaundice pipeline,such as corrosion, fatigue,jaundice pipeline no reasonable non-deep relaxation for welds stomata defect assessment to minimize unit downtime,reduce the cost of operation.