Korean standard nuclear plant ex-vessel neutron dosimetry program Ulchin 4
- Westinghouse Electric Company LLC, 1000 Westinghouse Dr., Cranberry Township, PA 16066-5228 (United States)
- Korea Atomic Energy Research Inst., 150 Dukjin-dong Yuseung-gu, Daejeon, 305-353 (Korea, Republic of)
- Korea Reactor Integrity Surveillance Technology, 150 Dukjin-dong Yuseung-gu, Daejeon, 305-353 (Korea, Republic of)
A comprehensive ex-vessel neutron dosimetry (EVND) surveillance program has been deployed in 16 pressurized water reactors (PWR) in South Korea and EVND dosimetry sets have already been installed and analyzed in Westinghouse reactor designs. In this paper, the unique features of the design, training, and installation in the Korean standard nuclear plant (KSNP) Ulchin Unit 4 are presented. Ulchin Unit 4 Cycle 9 represents the first dosimetry analyzed from the EVND design deployed in KSNP plants: Yonggwang Units 3 through 6 and Ulchin Units 3 through 6. KSNP's cavity configuration precludes a conventional installation from the cavity floor. The solution, requiring the installation crew to access the cavity at an elevation of the active core, places a premium on rapid installation due to high area dose rates. Numerous geometrical features warranted the use of a detailed design in true 3D mechanical design software to control interferences. A full-size training mockup maximized the crew ability to correctly install the instrument in minimum time. The analysis of the first dosimetry set shows good agreements between measurement and calculation within the associated uncertainties. A complete EVND system has been successfully designed, installed, and analyzed for a KNSP plant. Current and future EVND analyses will continue supporting the successful operation of PWR units in South Korea. (authors)
- Research Organization:
- American Society for Testing and Materials - ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA, 19428-2959 (United States); European Working Group on Reactor Dosimetry - EWGRD, SCK.CEN, Mol (Belgium)
- OSTI ID:
- 22086939
- Report Number(s):
- INIS-US-13-ISRD-14-os1p-2; TRN: US13V0010045386
- Resource Relation:
- Conference: ISRD-14: 14. International Symposium on Reactor Dosimetry, Bretton Woods, NH (United States), 22-27 May 2011; Other Information: Country of input: France; 5 refs.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of the severe accident management guidelines (SAMG) for Ulchin Nuclear Power Plant Unit 3, 4, 5 and 6
Design Improvement on Ulchin Nuclear Power Plant Units 5 and 6