바로가기  >

Abstract
ICRP (2011) revised the dose limit to the eye lens to 20 mSv/y based on a recent epidemiological study of radiation-induced cataracts. Maintenance of steam generators at nuclear power plants is one of the highest radiation-associated tasks within a non-uniform radiation field. This study aims to evaluate eye lens doses in the steam generators of the Korean OPR1000 design. The source term was characterized based on the CRUD-specific activity, and both the eye lens dose and organ dose were simulated using MCNP6 combined with an ICRP voxel phantom and a mesh phantom, respectively. The eye lens dose was determined to be 5.39E-02-9.43E-02 Sv/h, with a negligible effect by beta particles. As the effective dose was found to be 0.81-1.21 times the lens equivalent dose depending on the phantom angles, the former can be used to estimate the lens dose in the SG of the OPR1000 for radiation monitoring purposes.

Author information

Maeng SJ1,2, Kim J2, Cho G2.
1
Central Research Institute, Korea Hydro and Nuclear Power Co., Ltd., Yuseong-daero, Daejeon 34101, Korea.
2
Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, KAIST 291, Daehak-ro Yuseong-gu, Daejeon, Korea.