Helium detection technology applied in NPP 60F steam generator tubes pressurization test

The helium detection technology of Steam Generator tubes is a new technology developed by EDF in 1980s what is used to test the pressurization of tubes. This technology is applied in NPP Steam Generator which is belonged to EDF maturely. But the structure of the second side is diffident in 60F Steam Generator at a certain NPP. This article regards the application of the helium detection in this type Steam Generator as an example, introduces the operational principle and procedure of helium detection, recounts the difference in the structure, summarizes the problems found in the test preparation and actualization? forms the corresponding solutions, provides the experience for the same type of Steam Generator. (author)