원전 배관 결함의 크기측정성능에 대한 초음파 검사시스템의 확률론적 신뢰도 평가

Probabilistic Reliability Analysis of Ultrasonic Inspection System about Sizing Performance of Defects in Piping on Nuclear Power Plant

The performance demonstration round robin test was conducted to quantify the capability of ultrasonic inspection for in-service and to address some aspects of reliability for nondestructive evaluation. The fifteen inspection teams who employed procedures that met or exceeded ASME Sec. XI code requirements detected the piping of nuclear power plant with various cracks to evaluate the capability of detection. With data from PD-RR test, the performance of ultrasonic nondestructive inspection could be assessed using probability of length and depth sizing of cracks.