New Comparative Analysis of LWR Fuel Designs

摘要

In 1980, NRC published a comparative analysis of LWR fuel designs, and thatreport served as a handy reference for typical design and operating parameters for all types of fuel then in operation in U .S. power reactors. During the past twenty years, significant changes have been made in fuel designs, burnups, and analytical computer codes. The present report is an update of the earlier report. Typical fuel design parameters are tabulated for almost all fuel types in current operation, from BWR fuel bundles and PWR fuel assemblies. Calculated values are plotted for thirteen operating parameters including fuel centerline temperature, cladding O.D. temperature, gap conductance, rod internal gas pressure, and cladding hoop stress. The calculated values are plotted as a function of fuel burnup to 65 GWd/t for a variety of power histories, covering a range from low to high linear heat ratings, which are constant early in life but decline later in a realistic manner.