Development of the program for identifying high ORD jobs in nuclear power plants

According to the requirements of keeping occupational radiation dose (ORD) as low as reasonably achievable (ALARA), the effective reduction of ORD has always been one of the major concerns in the phases of design as well as operation of a nuclear power plant. But ORD is expected to increase on accounting of NPP(Nuclear Power Plants)-outworn. The cost-effective reduction of ORD at a NPP could not be achieved without going through an extensive analysis of accumulated ORD data of existing plants. For this purpose, the ORD data of KOREA NPP during outages are analyzed. Through the analysis of existing ORD data, high ORD jobs are identified. For analysis, two main ORD database program is developed. Using this program, the main high ORD jobs are analyzed according to several factors. From this result, improvement of ORD reduction method is possible to adopting effective means based upon the results of analysis