尿素高压管道支管座在连接管焊缝侧开裂原因分析及防范措施

摘要

The cracking cause and online processing of branch tube socket on the high pressure pipe and connecting tube in the weld fusion line in the USA and Netherlands type 480kt/a urea plant are introduced and analyzed, got the main damage reason that was stress corrosion, and took precautionary measures and corrective measures.%介绍美荷型480kt/a尿素装置高压系统,高压管道支管座与接管（≤DN50）焊缝在熔合线上的开裂原因及在线处理情况,并对开裂原因进行分析,得出损坏的主要原因由应力腐蚀引起,针对腐蚀原因提出防范和整改措施。