고피폭 예상 불균일 방사선장하에서 복수선량계를 이용한 피폭방사선량 평가에 대한 고찰
A Review on the Application of Two-dosimeter Algorithm to Estimate the Effective Dose in an Inhomogeneous Radiation Field and High Dose Rate
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초록
Maintenance on the water chamber of steam generator during outages has a likelihood of high radiation exposure to workers in nuclear power plants (NPPs). In such work, the radiation source geometry is formed vertically from top to bottom, and the radiation is generally scattered due to the narrow and limited space inside the water chamber of the steam generator. Thus, high radiation dose rates and non-uniform radiation fields can cause high radiation exposure to workers even short time period of task. In Korean NPPs, radiation workers who work in nonuniform radiation fields typically wear two dosimeters on the chest and back to evaluate their exposure precisely. This paper investigates the applicability of two-dosimeter approaches to medical workers who participate in the radiation diagnosis or handle radioisotopes in a hospital.
Abstract
Maintenance on the water chamber of steam generator during outages has a likelihood of high radiation exposure to workers in nuclear power plants (NPPs). In such work, the radiation source geometry is formed vertically from top to bottom, and the radiation is generally scattered due to the narrow and limited space inside the water chamber of the steam generator. Thus, high radiation dose rates and non-uniform radiation fields can cause high radiation exposure to workers even short time period of task. In Korean NPPs, radiation workers who work in nonuniform radiation fields typically wear two dosimeters on the chest and back to evaluate their exposure precisely. This paper investigates the applicability of two-dosimeter approaches to medical workers who participate in the radiation diagnosis or handle radioisotopes in a hospital.
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