Study on the Ultrasonic Inspection Strategy for the Primary Pipeline
In order to compensate for the increased risk caused by canceling the primary system hydraulic tests,the National Nuclear Safety Administration requires increasing the ultrasonic inspection of the primary pipeline welds.A CPR1000 nuclear power plant is going to cancel the primary system hydraulic tests,so it is necessary to formulate ultrasonic inspection strategy for 24 welds of the primary pipeline.Referring to the analysis method of the risk-guided in-service inspection,this paper evaluates the risks of different inspection strategies,and provides support for the formulation of primary inspection strategies.
Primary system hydraulic testsRI-ISIUltrasonic inspectionProbabilistic safety assessment
NETL
NSTL
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