PD資格試験実施から15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 2020, 54 examination sessions had been completed and 72 candidates had passed the examination. The total number of PD examinee including re-examination and re-certification was 124. Passed candidates can perform depth sizing of SCC flaws with a high level of accuracy. As a result of analyzing the causes of those who failed the PD examination, it was found that one of the criteria for passing the PD examination was the tendency to overestimate the actual SCC depth by being wary that the test response would not be less than 4.4 mm compared to the true SCC depth value.
