基于无损检测的输油管道环焊缝缺陷安全评估  

Safety Assessment on Girth Weld Defects of Petroleum Transmission Pipeline Based on NDT

作　　者：沙胜义[1] 付春艳[2] 燕冰川[1] 赵帅 时雷 刘陇 SHA Sheng-yi FU Chun-yan YAN Bing-chuan ZHAO Shuai SHI Lei LIU Long(PetroChina Pipeline Company, Langfang 065000, China China Internationnal Engineering Consulting Corporation, Beijing 100048, China Changqing Oil ＆ Gas Transmission Sub-company, PetroChina Pipeline Company, Yinchuan 750000, China Jinan Oil ＆ Gas Transmission Sub-company, PetroChina Pipeline Company, Jinan 250000, China Lanzhou Oil ＆ Gas Transmission Sub-company,PetroChina Southwest Pipeline Company,Lanzhou 730000, China)

机构地区：[1]中国石油管道公司,河北廊坊065000 [2]中国国际工程咨询公司,北京100048 [3]中国石油管道公司长庆输油气分公司,宁夏银川750000 [4]中国石油管道公司济南输油气分公司,山东济南250000 [5]中国石油西南管道兰州输油气分公司,甘肃兰州730000

出　　处：《管道技术与设备》2017年第1期26-29,共4页Pipeline Technique and Equipment

基　　金：质检公益性行业科研专项(201510205-03)

摘　　要：输油管道环焊缝开裂可能造成严重的威胁,但漏磁内检测技术难以精确识别及量化环焊缝缺陷。因此,基于漏磁内检测数据结果的适用性评价结果可能存在较大的偏差。为此,对比环焊缝缺陷无损检测结果,分析漏磁内检测环焊缝缺陷的尺寸量化精度,并基于无损检测的缺陷尺寸进行失效评估,结合管道实际运行压力,进行疲劳强度校核。评估结果显示无损检测识别的环焊缝缺陷均满足安全评定要求,不需要修复。Oil pipeline girth weld cracking may cause serious threat,but magnetic flux leakage in-line inspection is difficult to identify and quantify the girth weld defects accurately. So the suitability of girth welds may has a large deviation based on inline inspection data. Therefore,the quantitative accuracy of girth weld for magnetic flux leakage in-line inspection was analyzed by comparing the nondestructive testing results. And the defect size failure assessment was performed based on the NDT results combining actual operation pressure. The fatigue strength was checked.The assessment results show that girth weld defects identified by NDT meet the requirement of safety assessment and need not to be repaired.

关 键 词：管道 环焊缝缺陷 无损检测 内检测 疲劳 安全评估 

分 类 号：TE88[石油与天然气工程—油气储运工程]