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1 问题提出在我电厂热网建设中,采用架空和直埋两种方式敷设管线。按设计要求,架空敷设管线采用10%抽检,而直埋管线则需100%X射线探伤。X射线探伤工作量大且时间紧,不允许太多废片出现。直埋管焊缝探伤时,由于外套管距离500mm,而射线机又要紧贴被检件,活动空间小,很难对准中
1 issue put forward in my thermal power plant construction, the use of overhead and buried in two ways laying pipeline. According to design requirements, overhead laying pipelines using 10% sampling, and buried pipelines will require 100% X-ray inspection. X-ray inspection workload and time is tight, do not allow too much scrap pieces appear. Buried pipe weld flaw detection, due to the outer tube distance of 500mm, and ray machine but also close to the seized pieces, the activity space is small, it is difficult to align