@phdthesis{oai:nagoya.repo.nii.ac.jp:00007940,
 author = {東條, 匡志 and tojo, masashi},
 month = {Sep},
 note = {In this study, a BWR core calculation method is developed. The continuous energy Monte Carlo burn-up calculation code is newly applied to BWR assembly calculations of production level. The applicability of the present new calculation method is verified through the tracking-calculation of commercial BWR. The mechanism and quantitative effects of the error propagations, the spatial discretization and of the temperature distribution in fuel pellet on the Monte Carlo burn-up calculations are clarified. These effects on the BWR assembly calculations have never been quantitatively evaluated. Through this study, the optimized calculation condition and total calculation errors including propagation effect are clarified. After these verifications, a new method of BWR assembly calculation is established that utilize a continuous energy Monte Carlo code, which has never been used for production assembly calculations. Few-groups cross-sections and related constants (kinetic parameters) are generated by the continuous-energy Monte Carlo code, MVP-BURN. And the commercial BWR is analyzed by a coupled neutronic-thermalhydraulic core simulator using these assembly constants. The calculated core parameters show good agreement with the results of the on-line core monitoring system. Consequently, it is confirmed that the present method is applicable to BWR core production calculations. Furthermore, advanced three-dimensional pin power reconstruction method is proposed. This new pin power reconstruction method utilizes the characteristics of the Monte Carlo calculation that it can directly execute three-dimensional calculation. It can treat axially heterogeneous regions such as control tip. Accuracy of Linear Heat Generation Ratio (LHGR) at these Control Rod (CR) tip regions is improved by this method. Through this study, the basic method of the application of continuous energy Monte Carlo calculation to the commercial reactors is established. The present new BWR core analysis method using continuous energy Monte Carlo burn-up calculation is a particularly attractive candidate for the analysis of advanced BWR fuel assemblies with exotic geometry and high Gd content, due to the features of the continuous-energy Monte Carlo code, i.e., high accuracy and generalized geometry treatment., 名古屋大学博士学位論文 学位の種類:博士(工学)(課程)  学位授与年月日:平成19年9月28日},
 school = {名古屋大学, Nagoya University},
 title = {Study on the Development of New BWR Core Analysis Scheme Based on the Continuous Energy Monte Carlo Burn-up Calculation Method},
 year = {2007}
}