| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1729927 | Annals of Nuclear Energy | 2009 | 6 Pages |
Abstract
The accuracy of WIMS9A/PANTHER and MCNP5 in modeling D2O-moderated, and H2O-, D2O- or air-cooled, doubly heterogeneous lattices of fuel clusters was demonstrated using Low Void Reactivity Fuel (LVRF) substitution experiments in the ZED-2 critical facility. MCNP5 with ENDF/B-VI (Release 5) underpredicted keff but gave excellent coolant void reactivity (CVR) bias values. WIMS9A/PANTHER with JEF-2.2 overpredicted keff and underpredicted the CVR bias relative to MCNP5 by 100–200 pcm. Both codes reproduced the measured axial and radial flux shapes accurately.
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Authors
M.T. Sissaoui, P.A. Carlson, J.R. Lebenhaft,