Validation of the new code package APOLLO2.8 for accurate PWR neutronics calculations

Conference · Mon Jul 01 04:00:00 EDT 2013

OSTI ID:22212821

Santamarina, A.; Bernard, D.; Blaise, P.; Leconte, P.; Palau, J. M.; Roque, B.; Vaglio, C.; Vidal, J. F. ^[1]

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1. Commissariat a l'Energie Atomique et aux Energies Alternatives, CEA, DEN, DER, SPRC, Cadarache, F-13108 Saint-Paul-Lez-Durance (France)

This paper summarizes the Qualification work performed to demonstrate the accuracy of the new APOLLO2.S/SHEM-MOC package based on JEFF3.1.1 nuclear data file for the prediction of PWR neutronics parameters. This experimental validation is based on PWR mock-up critical experiments performed in the EOLE/MINERVE zero-power reactors and on P.I. Es on spent fuel assemblies from the French PWRs. The Calculation-Experiment comparison for the main design parameters is presented: reactivity of UOX and MOX lattices, depletion calculation and fuel inventory, reactivity loss with burnup, pin-by-pin power maps, Doppler coefficient, Moderator Temperature Coefficient, Void coefficient, UO{sub 2}-Gd{sub 2}O{sub 3} poisoning worth, Efficiency of Ag-In-Cd and B4C control rods, Reflector Saving for both standard 2-cm baffle and GEN3 advanced thick SS reflector. From this qualification process, calculation biases and associated uncertainties are derived. This code package APOLLO2.8 is already implemented in the ARCADIA new AREVA calculation chain for core physics and is currently under implementation in the future neutronics package of the French utility Electricite de France. (authors)

• Research Organization: American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
• OSTI ID: 22212821
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
ACCURACY
BAFFLES
BURNUP
COMPARATIVE EVALUATIONS
DOPPLER COEFFICIENT
ELECTRICITE DE FRANCE
GADOLINIUM OXIDES
GAS UTILITIES
MODERATORS
PWR TYPE REACTORS
SPENT FUELS
TEMPERATURE COEFFICIENT
URANIUM DIOXIDE
VALIDATION
VOID COEFFICIENT
ZERO POWER REACTORS