High-burn up 10×10 100%MOX ABWR core physics analysis with APOLLO2.8 and TRIPOLI-4.5 codes

Blaise, Patrick; Huot, N.; Thiollay, Nicolas; Fougeras, Philippe; Santamarina, A.

doi:10.1016/j.anucene.2010.04.006

Cited by 5 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Design of assemblies with UO 2 fuel consists of 9 × 9 lattice configuration with 2 large water channels and 74 fuel rods of varying 235 U enrichment. Initial enrichment varies from Science and Technology of Nuclear Installations 3 3 wt% to 6.3 wt% for fuel mixtures (marked by numbers [1][2][3][4]. 16 fuel rods contain UO 2 -Gd 2 O 3 mixture (marked as G).…”

Section: Designs Of Fuelmentioning

confidence: 99%

See 1 more Smart Citation

Void Reactivity Coefficient Analysis during Void Fraction Changes in Innovative BWR Assemblies

Slavickas

Pabarčius

Tonkunas

et al. 2015

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

The study of the void reactivity variation in innovative BWR fuel assemblies is presented in this paper. The innovative assemblies are loaded with high enrichment fresh UO 2 and MOX fuels. UO 2 fuel enrichment is increased above existing design limitations for LWR fuels (>5%). MOX fuel enrichment with fissile Pu content is established to achieve the same burnup level as that of high enrichment UO 2 fuel. For the numerical analysis, the TRITON functional module of SCALE 6.1 code with the 238-group ENDF/B-VI cross section data library was applied. The investigation of the void reactivity feedback is performed in the entire 0-100% void fraction range. Higher values of void reactivity coefficient for assembly loaded with MOX fuel are found in comparison with values for assembly loaded with UO 2 fuel. Moreover, coefficient values for MOX fuel are positive over 75% void fraction. The variation of the void reactivity coefficient is explained by the results of the decomposition analysis based on four-factor formula and neutron absorption reactions for main isotopes. Additionally, the impact of the moderation enhancement on the void reactivity coefficient was investigated for the innovative assembly with MOX fuel.

show abstract

Section: Designs Of Fuelmentioning

confidence: 99%

“…Void reactivity coefficient for BWR fuel has been studied for typical void fraction values of 0%, 40%, and 70% [2][3][4]. 0% and 70% void fractions were chosen in these studies, since they correspond to moderation conditions at the bottom and the top of the BWR fuel assembly during normal operation, respectively.…”

Section: Introductionmentioning

confidence: 99%