Cross section adjustment applied to estimation of uncertainty in the breeding ratio of an LMFBR

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5876271

Marable, J. H.; Weisbin, C. R.; de Saussure, G.

Eleven fast-reactor benchmark experiments and two neutron-field benchmark experiments were applied to a least-squares adjustment of a 26-group cross section library based primarily on ENDF/B-IV. The covariance data include correlations between cross sections for different energies, reactions, and materials, and between integral experiments, and covariances of calculational bias factors due to specific modeling and calculational procedures. The results of the adjustment are applied to the determination of the uncertainties in the multiplication factor and in the breeding ratio of a large LMFBR design model fixed by the Large Core Code Evaluation Working Group (LCCEWG).

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5876271
• Report Number(s): CONF-791058--26
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
BENCHMARKS
BREEDER REACTORS
BREEDING RATIO
CONVERSION RATIO
CROSS SECTIONS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
GROUP CONSTANTS
LEAST SQUARE FIT
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MAXIMUM-LIKELIHOOD FIT
MULTIPLICATION FACTORS
NUMERICAL SOLUTION
REACTORS