Preliminary Neutronic Study of D_2O-Cooled High Conversion PWRs

摘要

This paper presents a preliminary neutronics analysis of tight-pitch D_2O-cooled high-conversion PWRs loaded with MOX fuel aiming at high Pu conversion and negative void coefficient. SCALE6.1 has been exclusively utilized for this study. The analyses are performed in two separate parts. The first part of this paper investigates the performance of axial and internal blankets and seeks break-even or near-breeder core even without the presence of radial blankets. The second part of this paper performs sensitivity and uncertainty analyses of integral parameters (k_(eff) and void coefficient) for selected systems in order to analyze the characters of this high-conversion PWR from different aspects.