本文件给出了轻水反应堆非铁磁蒸汽发生器加热管涡流试验的运行前检查（PSI）和运行中检查（ISI）指南，其中使用机械化试验设备从管内侧向外进行试验。 作为一次回路部件的蒸汽发生器加热管塞的在役涡流试验不是本文件的目标。由于蒸汽发生器加热管塞的实施方式不同，有必要使用经过特殊调整的测试系统进行鉴定。 定义了用于不均匀性（表面）定位的测试系统，以及对测试人员、测试设备、测试和设备系统的准备、测试的实施以及记录的要求。 注:核安全标准中定义了有关试验段、试验范围、检查周期、检查间隔和指示评估的数据。 建议技术规范基于弯曲半径均匀的U形管弯头的经验（类似于S/KWU设计）。为了测试其他类型的弯管（例如带有两个90°弯管的U形弯管），将提供进一步的资格认证。

This document gives guidelines for pre-service inspection (PSI) and in-service inspections (ISI) by eddy current tests on non-ferromagnetic steam generator heating tubes of light water reactors, whereby the test is carried out using mechanised test equipment outwards from the tube inner side. An in-service eddy current test of steam generator heating tube plugs as a component of the primary circuit is not an object of this document. Owing to the different embodiments of steam generator heating tube plugs, the use of specially adapted test systems to be qualified is necessary. Test systems for the localisation of inhomogeneities (surface) and requirements for test personnel, test devices, the preparation of test and device systems, the implementation of the testing as well as the recording are defined. NOTE Data concerning the test section, test extent, inspection period, inspection interval and evaluation of indications is defined in the nuclear safety standards. It is recommended that the technical specifications are based on experience on U-tube bends with even bend radius (similar to the S/KWU design). To test other kind of tube bends (e.g. U-tube bends with two 90° bends) further qualifications will be provided.