원자력시설 해체 종사자의 방사선피폭 관리를 위한피폭방사선량 관리체계 및 관리 목표치에 대한 연구 (Study of Decommissioning Organization and Target Doses for Management of Radiation Exposure to Workers at Nuclear Facilities)

서지정보

· 발행기관 : (사)한국방사선산업학회
· 수록지 정보 : 방사선산업학회지 / 12권 / 1호 / 89 ~ 96페이지
· 저자명 : 이화정, 지승우, 김우진, 도태관, 김도연, 김광표

초록

During decommissioning of a nuclear facility, the radiation dose to workers should be managed not to exceed a certain level. The objective of this study was to review decommissioning organization and target doses for management of radiation exposure to workers at nuclear facilities. The review was performed for the 7 nuclear facilities in the US, including commercial nuclear power plants, research and experimental reactor, and other nuclear facilities. For all the facilities, decommissioning organizations were established and given in decommissioning activities report and decommissioning plan. Certain department and associated supervisors were in charge of radiation protection of workers. They had an authority to stop radiation works not to exceed a certain level. In 10 CFR 20, only dose limits not target doses are given. Therefore, each facility set its own target doses and applied it during the facility decommission. The target doses were set 50~100% (25~50 mSv·year-1) level of dose limits for the commercial nuclear power plants and 10~50% (5~25 mSv·year-1) level of dose limits for the research and experimental nuclear plant and other nuclear facilities. It is suggested that 70~90% (14~18 mSv·year-1) level of dose limits is appropriate for near future decommissioning of a commercial nuclear power plant considering target doses for previous decommission of nuclear facilities in other country and management dose limits set for operational nuclear power plants in Korea.

영어초록

During decommissioning of a nuclear facility, the radiation dose to workers should be managed not to exceed a certain level. The objective of this study was to review decommissioning organization and target doses for management of radiation exposure to workers at nuclear facilities. The review was performed for the 7 nuclear facilities in the US, including commercial nuclear power plants, research and experimental reactor, and other nuclear facilities. For all the facilities, decommissioning organizations were established and given in decommissioning activities report and decommissioning plan. Certain department and associated supervisors were in charge of radiation protection of workers. They had an authority to stop radiation works not to exceed a certain level. In 10 CFR 20, only dose limits not target doses are given. Therefore, each facility set its own target doses and applied it during the facility decommission. The target doses were set 50~100% (25~50 mSv·year-1) level of dose limits for the commercial nuclear power plants and 10~50% (5~25 mSv·year-1) level of dose limits for the research and experimental nuclear plant and other nuclear facilities. It is suggested that 70~90% (14~18 mSv·year-1) level of dose limits is appropriate for near future decommissioning of a commercial nuclear power plant considering target doses for previous decommission of nuclear facilities in other country and management dose limits set for operational nuclear power plants in Korea.

참고자료

· 없음