PD資格試験実施から13年の実施状況
概要
The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced performance demonstration examinations (PD examination) for flaw depth sizing of austenitic stainless steel pipes in March 2006. At the end of FY 2018, 50 examination sessions had been completed and 68 candidates had passed the examination. The total number of PD examinee including re-examination and re-certification was 116. Passed candidates can perform depth sizing of SCC flaws with a high level of accuracy. Mean of measurement error and the standard deviation for the unsuccessful candidate of PD examination tend to increase with increasing wall thickness of the PD specimen. The pass rate of the PD examinations is not depending on the age of the candidates.
