PWR experimental benchmark analysis using WIMSD and PRIDE codes

• PWR experimental benchmark calculations were performed using WIMSD and PRIDE codes.
• Various models for lattice cell homogenization were used.
• Multiplication factors, power distribution and reaction rates were studied.
• The effect of cross section libraries on these parameters was analyzed.
• The results were compared with experimental and reported results.

The PWR experimental benchmark problem defined by ANS was analyzed using WIMSD and PRIDE codes. Different modeling methodologies were used to calculate the infinite and effective multiplication factors. Relative pin power distributions were calculated for infinite lattice and critical core configurations, while reaction ratios were calculated for infinite lattice only. The discrete ordinate method (DSN) and collision probability method (PERSEUS) were used in each calculation. Different WIMSD cross-section libraries based on ENDF/B-VI.8, ENDF/B-VII.0, IAEA, JEF-2.2, JEFF-3.1 and JENDL-3.2 nuclear data files were also employed in the analyses. Comparison was made with experimental data and other reported results in order to find a suitable strategy for PWR analysis.