Investigation of the Impact of ENDF/B-VI Cross Sections on the H.B. Robinson-2 Pressure-Vessel Flux Prediction [electronic resource].
- Rockville, Md. : U.S. Nuclear Regulatory Commission, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 20 pages : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory
U.S. Nuclear Regulatory Commission
United States. Department of Energy. Office of Scientific and Technical Information
- This report discusses the impact of the change from the SAILOR cross-section library, based on the ENDF/B-IV data, to the BUGLE-96 cross-section library, based on the ENDF/B-VI data, on the neutron flux prediction in the H. B. Robinson-2 pressure vessel, in the surveillance capsule, and in the cavity. The fast flux (E > 1 MeV) from the transport calculations with the BUGLE-96 library is ∼6% higher in the surveillance capsule and at the PV inner wall, and ∼25% higher in the reactor cavity than the flux from the transport calculations with the SAILOR library. These changes result from the combined effect of the changes in the cross sections, which cause significant increases in the calculated fluxes, and much smaller decreases in the fast fluxes due to the changes in the fission spectra. The increase in the calculated fast flux due to the changes in the cross sections only is ∼9% in the capsule and at the pressure vessel (PV) wall, and ∼30% in the cavity. The changes in the fission spectra lead to decreases in the order of ∼3-4% in calculated fast fluxes.
- Published through SciTech Connect.
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