Eddy Current Testing of Nuclear Power Plant High-pressure Heater Tubes and Defect Mechanism Analysis

Leaking failures of the heat-exchanging tubes of high-pressure heaters have serious impact on the safe operation of nuclear power plant. Eddy current testing for the high-pressure heaters can always find the defects effectively. In this thesis, with the results from eddy current testing, by analyzing the operation condition of high-pressure tubes, the degradation mechanism is studied and the protection suggestion is introduced.