An analysis of the radiation field characteristics for extremity dose assessment during maintenance periods at nuclear power plants in Korea.
Workers who maintain the water chambers of steam generators during maintenance periods in nuclear power plants (NPPs) have a higher likelihood of high radiation exposure, even if they are exposed for a short period of time. In particular, it is expected that the hands of workers would receive the highest radiation exposure as a consequence of hand contact with radioactive materials. In this study, a characteristic analysis of inhomogeneous radiation fields for contact operations was conducted using thermoluminescent dosemeters for the whole body and extremities during maintenance periods at Korean NPPs. It was observed that inhomogeneous radiation fields for contact operations at NPPs were dominated by high-energy photons.
Central Research Institute, Korea Hydro & Nuclear Power Co., Ltd., 25-1, Jangdong, Yuseong-gu, Daejeon 305-343, Republic of Korea. hkkim1@khnp.co.kr
Hee Geun
HG
Kim
Tae Young
TY
Kong
D001822:Body Burden; D019544:Equipment Failure Analysis / Q000706:statistics & numerical data; D006225:Hand; D006801:Humans; D008283:Maintenance / Q000706:statistics & numerical data*; D055848:Nuclear Power Plants / Q000295:instrumentation* / Q000706:statistics & numerical data*; D016273:Occupational Exposure / Q000032:analysis* / Q000706:statistics & numerical data*; D009928:Organ Specificity; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000706:statistics & numerical data*; D056910:Republic of Korea