Experience of occupational dose ALARA through work management in Korea

The occupational dose to radiation workers in nuclear power plants depends on not only plant-specific factors such as design features, materials, water chemistry and other factors related to dose rates but also work management particles. The long-term experience in the nuclear power industry has showed that the work management can be applied for the simultaneous achievement of two conflicting goals for cost saving and occupational dose reduction. KEPCO has been trying to fulfill these two goals through work management since early 1990s, and achieved great success in the occupational dose reduction. In this paper, the work management policy of KEPCO has been briefly described. Work management experiences for steam generator replacement job of Kori 1, RTD bypass line removal job of Kori 3 and 4, and some other important jobs presented in the ALARA workshop held in 1999 were summarized. Then the lessons learned from the experiences were discussed. (author). 9 refs., 3 tabs., 1 fig