Evaluation of discrepancies in assembly cross-section generator codes

Technical Report · Thu Feb 01 00:00:00 EST 1990

OSTI ID:7157072

Fisher, J R; Grow, R L; Rapp, J S; Smolinske, K M; Mint, L S ^[1]

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1. Utility Resource Associates, Rockville, MD (USA)

The capabilities of utility reactor analysis technical staffs have increased significantly over the past five to ten years. Utilities utilize different cross section generators (EPRI-CELL, CPM, CASMO), different versions of these generators and different libraries in the generators, to produce input to different nodal codes. Phase I of this project utilized available data from utility calculations to identify the areas of differences in calculated results and to make an initial assessment of the potential impact and/or consequence of these differences. Phase II of this project investigated these differences via a consortium of utilities performing calculations for pin cells and multi-pin cells using controlled input data and options. The Phase II goal was to quantify differences and to determine if the differences were due to cross section library, cross section code methodology or the procedure for utilizing a code. The Phase III goal was to investigate the significant differences from Phase II in an assembly environment to determine if the differences became smaller, larger or remained the same in the assembly environment. The Phase III assembly calculations were performed by the same group of utilities as Phase II and the cases used controlled input and code vendor input option recommendations. 10 figs., 31 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Utility Resource Associates, Rockville, MD (USA)
• Sponsoring Organization: EPRI
• OSTI ID: 7157072
• Report Number(s): EPRI-NP-6147-Vol.3; TRN: 90-007906
• Country of Publication: United States
• Language: English

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