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目前,在用压力容器不同程度地存在着大量的历史遗留下的缺陷,其中普遍存在着错边量、棱角度超过现行制造标准的情况,因此,在《在用压力容器检验规程》中第35条规定:“错边量和棱角度的超标,应根据具体情况进行综合评定:1.属一般超标,可打磨或不作处理,可定为2级或3级;2.属严重超标,经该部位焊缝内外部无损探伤抽查,如无较严重缺陷存在,可定为3级,若伴有裂纹、未熔合、未焊透等严重缺陷,应通过应力分析,确定能否继续使用。在规定的操作条件下和检验周期内,能安全使用的定为3级,否则定为4级或5级。”但在以上的要求中,一般超标与严重超标未
At present, there are a large number of defects left over by the pressure vessels to varying extents. Among them, there is a widespread problem that the amount of edge defects and edge angles exceed the current manufacturing standards. Therefore, in “Pressure Vessel Inspection Procedure”, Article 35 Article states: “The wrong side of the amount and edge angle exceeded, should be based on the specific situation of a comprehensive assessment: 1. Is generally exceeded, can be polished or not for processing, can be set for 2 or 3; 2 is a serious excessive, the The site of non-destructive testing of weld spot checks, such as no more serious defects exist, can be set at level 3, if accompanied by cracks, unfused, incomplete penetration and other serious defects, stress analysis should be to determine whether to continue to use. Under the specified operating conditions and inspection cycle, can be safely used as 3, otherwise set to 4 or 5. ”But in the above requirements, the general exceeded and severely exceeded the standard