원전 불균일 방사선장하에서 유효선량 평가를 위한 복수선량계 알고리즘 적용방안 연구
A Study on the Application of Two-dosimeter Algorithm to Estimate theEffective Dose in an Inhomogeneous Radiation Field at Korean Nuclear PowerPlants
In Korean nuclear power plants (NPPs), two thermoluminescent dosimeters (TLD) were provided to workers who work inan inhomogeneous radiation field; one on the chest and the other on the head. In this way, the effective dose for radiation workers atNPPs was determined by the high deep dose between two radiation dose from these TLDs. This represented a conservative method ofevaluating the degree of exposure to radiation. In this study, to prevent the overestimation of the effective dose, field applicationexperiments were implemented using two-dosimeter algorithms developed by several international institutes for the selection of anoptimal algorithm. The algorithms used by the Canadian Ontario Power Generation (OPG) and American ANSI HPS N13.41, NCRP(55/50), NCRP (70/30), EPRI (NRC), Lakshmanan, and Kim (Texas A&M University) were extensively analyzed as two-dosimeteralgorithms. In particular, three additional TLDs were provided to radiation workers who wore them on the head, chest, and back duringmaintenance periods, and the measured value were analyzed. The results found no significant differences among the calculatedeffective doses, apart from Lakshmanan's algorithm. Thus, this paper recommends the NCRP(55/50) algorithm as an optimal two-dosimeter algorithm in consideration of the solid technical background of NCRP and the convenience of radiation works. In addition, itwas determined that a two-dosimeter is provided to a single task which is expected to produce a dose rate of more than 1 mSv/hr, adifference of dose rates depending on specific parts of the body of more than 30%, and an exposure dose of more than 2 mSv.
목차
초록 1. 서론 2. 국내외 원전의 복수선량계 적용현황 3. 복수선량계 알고리즘 조사 4. 복수선량계 알고리즘 적용성 시험 및 결과 5. 결론 참고문헌 abstract
대한방사선방어학회 [Korean Association For Radiation Protection]
설립연도
1975
분야
자연과학>기타자연과학
소개
회원 상호간의 협조와 친목을 도모함으로써 방사선방어에 관한 제반연구 및 발전에 이바지함을 물론 학술의 국제교류 및 국제학술단체와의 상호협력 증진에 기여함을 목적으로 하며, 이 목적을 달성하기 위하여 다음 각 호의 사업을 한다.
1. 방사선방어에 관한 학술연구발표회 및 강연회 등의 개최
2. 학회지 및 방사선방어에 관한 학술간행물의 발행 및 배포
3. 방사선방어에 관한 학술의 국제교류 및 협력
4. 방사선방어에 관한 국제학술자료의 조사, 수집 및 번역
5. 방사선방어에 관한 조사 및 연구용역
6. 회원의 연구활동을 위한 제반협조
7. 기타 본 학회의 목적 달성에 필요한 사항
간행물
간행물명
방사선방어학회지 [Journal of Radiation Protection and Research]