标准摘要
[中文适用范围]： 本文件规定了用于铁磁性材料制成的在用设备的磁通泄漏（MFL）测试方法和结果评估。本文件主要适用于检测板材和管状结构测试表面及对面表面的体积缺陷，如腐蚀和机械损伤。测试表面允许最大厚度为6 mm的涂层。本文件适用于外径不小于38 mm、壁厚不超过20 mm的在用铁磁性无缝钢管和压力容器壳体母材的外部MFL测试。本文件也适用于壁厚不超过20 mm的压力容器和储罐底板的母材MFL测试。 [外文原描述]： This document specifies a magnetic flux leakage (MFL) testing method and evaluation of results for in-use equipment made of ferromagnetic materials. This document is mainly applicable for the detection of volume defects such as corrosion and mechanical damage on the test surface and the opposite surface of plate and tubular structures. A coating with a maximum thickness of 6 mm is allowed on the test surface. This document applies to external MFL testing of in-use ferromagnetic seamless steel pipes and base metal of pressure vessel shells with an outer diameter of not less than 38 mm and a wall thickness of not more than 20 mm. This document is also applicable to MFL testing of base metal of pressure vessels and storage tank bottom plates with a wall thickness of not more than 20 mm.
英文名称Non-destructive testing — Magnetic flux leakage testing — Corrosion of steel plates and steel pipes of in-service equipment