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概要

Korea Electric Power Research Institute (KEPRI) and Korea Hydro and Nuclear Power Company (KHNP) developed Korean Performance Demonstration (KPD) system for ultrasonic examination applicable to pressurized light-water reactor and pressurized heavy-water reactor power plants in accordance with ASME Sec. XI App. VIII. In order to develop the KPD system, following works were completed. 1)Surveying the welds on piping of all nuclear power plants in Korea, 2)Surveying the bolting configuration of all nuclear power plant in Korea, 3)Determining the number and type of test specimens, 4)Designing the test and the practice specimens, 5)Developing quality assurance procedures for the fabrication of test specimens and system management, 6)Developing generic procedures for manual ultrasonic test, 7)Fabrication and fingerprint of test specimen. After establishing the KPD system, round robin tests were conducted to evaluate the accuracy and reliability of examination results by comparing traditional ASME code and performance demonstration method. KEPRI/KHNP had successfully developed the KPD system to fulfill the performance demonstration requirements of ASME Sec. XI, Appendix VIII, and are executing the performance demonstration test for ultrasonic examination system.

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