Ultrasonic inspection defect roughness influence compensation test process for nuclear power plant

The invention relates to an ultrasonic inspection defect roughness influence compensation test process for a nuclear power plant. The process comprises the following steps: selecting typical parts such as base metal and weld joints of main equipment of the nuclear power plant as test objects; determining a base material and related welding requirements of a test piece according to a test object, and preparing the test piece; preparing a plurality of groups of defects with different sizes on the test piece; carrying out ultrasonic inspection test work on the multiple groups of defects by adopting multiple groups of different ultrasonic inspection parameters; and formulating a nuclear power plant main equipment ultrasonic inspection defect roughness influence compensation table. Multiple groups of different ultrasonic inspection parameters are adopted to comprehensively and respectively perform ultrasonic inspection on multiple groups of defects, and a more comprehensive influence result of defect surface rough