Non-destructive testing of nuclear power engineering requires compliance with many safety laws and regulations, and the qualification requirements for inspectors are very strict.
Due to the characteristics of the unit, it should follow many testing standards, such as Russian standards, American standards, European standards, Chinese national standards, industry/department standards, and various industry/enterprise associations, design institutes/enterprise standards. There are many types of materials involved in the inspection, such as carbon steel, low alloy steel, cast steel, cast iron, duplex steel, stainless steel, etc., and the material standard surface is wide and fine, technical requirements and high standards of qualification; long construction period, pre-service Detection and in-service testing are intertwined, and engineering coordination is difficult.
The improvement of the management level of non-destructive testing is the key to ensure the last barrier, that is, the inspection and acceptance does not fail. Therefore, it is necessary to effectively manage the key links such as non-destructive testing personnel qualification control, non-destructive testing process evaluation, testing procedure formulation, and report management. The quality of work and management of non-destructive testing.
Non-destructive testing methods for nuclear power engineering mainly include ray (RT), ultrasonic (UT), eddy current (ET), infiltration (PT), leakage (LT), magnetic powder (MT), television inspection (CCTV) and visual inspection (VT). Such methods, such as human error, violation of the detection process procedures, etc., have a certain impact on the reliability of the test results. The common problems in the non-destructive testing management of nuclear power engineering under the new situation mainly include the following aspects.
---NDT process specifications and reporting coverage issues
---Non-destructive testing personnel qualification control and sustainability issues
---Detection skills and problems in detecting human error
---Detection of missing records and post-replenishment data
---Detecting problems in the report
---Security protection problem
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