Final disposal of radioactive waste generated from Nuclear Power Plant (NPP) requires the detailed information about the characteristics and the quantities of radionuclides in waste package. Most of these radionuclides are difficult to measure and expensive to assay. Thus it is suggested to the indirect method by which the concentration of the Difficult-to-Measure (DTM) nuclide is estimated using the correlations of concentration - it is called the scaling factor - between Easy-to-Measure (Key) nuclides and DTM nuclides with the measured concentration of the Key nuclide. In general, the scaling factor is determined by the log mean average (LMA) method and the regression method. However, these methods are inadequate to apply to fission product nuclides and some activation product nuclides such as 14 and 90 . In this study, the artificial neural network (ANN) method is suggested to improve the conventional SF determination methods - the LMA method and the regression method. The root mean squared errors (RMSE) of the ANN models are compared with those of the conventional SF determination models for 14 and 90 in two parts divided by a training part and a validation part. The SF determination models are arranged in the order of RMSEs as the following order: ANN model

Abstract   I. Introduction   II. Converntional SF Determination Method   III. Artificial Neural Network   IV. Application of SF determination   V. Results and Discussion   VI. Concluded Remarks   VII. Acknowledgments   VIII. References

• Sang-Chul Lee(한국과학기술원) | 이상철
• Ki-Ha Hwang(한국과학기술원) | 황기하
• Sang-Hee Kang(한국과학기술원) | 강상희
• Kun-Jai Lee(한국과학기술원) | 이건재