A study on DCGL determination and the classification of contaminated areas for preliminary decommission planning of KEPCO-NF nuclear fuel fabrication facility
- Title
- A study on DCGL determination and the classification of contaminated areas for preliminary decommission planning of KEPCO-NF nuclear fuel fabrication facility
- Author
- 김용수
- Keywords
- DCGL; Decommissioning; Nuclear fuel fabrication facility; RESRAD-BUILD; MARSSIM
- Issue Date
- 2019-12
- Publisher
- KOREAN NUCLEAR SOC
- Citation
- NUCLEAR ENGINEERING AND TECHNOLOGY, v. 51, no. 8, Page. 1951-1956
- Abstract
- As a part of the preliminary decommissioning plan of KEPCO-NF fuel fabrication facility, DCGLs of three target radionuclides, U-234, U-235, and U-238, were derived using RESRAD-BUILD code and contaminated areas of the facility were classified based on contamination levels from the derived DCGLs.
From code simulations, one-room modeling results showed that the grinding room in building #2 was the most restrictive (DCGL(gross) 10493.01 Bq/m(2)). The DCGL(gross) results in contaminated areas from one-room modeling were slightly more conservative than three-room modeling. Prior to the code simulation, field survey and measurements conducted by each survey unit. For a conservative approach, the most restrictive DCGL(gross) in each survey unit was taken as a reference to classify the contaminated areas of the facility. Accordingly, seven rooms and 37 rooms in the nuclear-fuel buildings were classified as Class 1 and Class 2, respectively. As expected, fuel material handling and processing rooms such as the grinding room, sintering room, compressing room, and powder collecting room were included in the Class 1 area. (C) 2019 Korean Nuclear Society, Published by Elsevier Korea LLC.
- URI
- https://linkinghub.elsevier.com/retrieve/pii/S1738573319301639https://repository.hanyang.ac.kr/handle/20.500.11754/151660
- ISSN
- 1738-5733
- DOI
- 10.1016/j.net.2019.06.012
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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