A study on DCGL determination and the classification of contaminated areas for preliminary decommission planning of KEPCO-NF nuclear fuel fabrication facilityopen access
- Authors
- Cho, Seo-Yeon; Kim, Yong-Soo; Park, Da-Won; Park, Chan-Jun
- Issue Date
- Dec-2019
- Publisher
- KOREAN NUCLEAR SOC
- Keywords
- DCGL; Decommissioning; Nuclear fuel fabrication facility; RESRAD-BUILD; MARSSIM
- Citation
- NUCLEAR ENGINEERING AND TECHNOLOGY, v.51, no.8, pp.1951 - 1956
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- NUCLEAR ENGINEERING AND TECHNOLOGY
- Volume
- 51
- Number
- 8
- Start Page
- 1951
- End Page
- 1956
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/11615
- DOI
- 10.1016/j.net.2019.06.012
- ISSN
- 1738-5733
- Abstract
- As a part of the preliminary decommissioning plan of KEPCO-NF fuel fabrication facility, DCGLs of three target radionuclides, 234U, 235U, and 238U, 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 (DCGLgross = 10493.01 Bq/m2). The DCGLgross 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 DCGLgross 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.
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