加氢装置厚壁管道无损检测方法的选择  

Selection of Nondestructive Testing Method for Piping with Thick Shell Used in Hydrogenation Unit

作　　者：姜万军 Jiang Wanjun(SINOPEC Luoyang Petrochemical Engineering Co.,Ltd,Luoyang 471003,China)

机构地区：[1]中石化洛阳工程有限公司,河南洛阳471003

出　　处：《化工设备与管道》2018年第6期61-65,共5页Process Equipment & Piping

摘　　要：加氢装置厚壁管道多,管道对接环焊缝无损检测比例高,焊缝无损检测工作量大,对接环焊缝无损检测受现场条件制约,采用射线检测往往存在一定难度,特别是随着装置大型化,该问题显得更加突出。而射线检测、超声波检测、磁粉检测和渗透检测作为常用的管道无损检测方法,由于受其原理的限制,每种无损检测方法均有其适用范围和优缺点,用单一的无损检测方法难以保证焊缝缺陷检出效果。在制定无损检测方案时,应根据不同材质管道的特点和焊接过程中容易产生的缺陷类型,选择两种或多种检测方法的无损检测组合方案,从而保证无损检测对缺陷的检出效果,进而保证焊缝质量。In hydrogenation unit,there is a lot of piping with thick wall,for which the ratio of hoop weld inspection is high and workload is large.Constrained with onsite conditions,use of radioactive test in weld inspection is often difficult.Especially,with the condition that plant and equipment change toward to large scale,this problem is more prominent.Every nondestructive testing method,such as RT,UT,MT and PT,has its applicable scope based on its principle,respectively.With single NDT method,the defects existed in welds may be difficult to find.Thus,in determination of NDT scheme,the combination of 2 or more methods should be selected based on the features of piping materials and the types of defects appeared in the welds,so that the inspection effect can be ensured and welding quality can be controlled.

关 键 词：加氢装置 管道 无损检测 焊接 

分 类 号：TQ055.8[化学工程] TH17[机械工程—机械制造及自动化]