scholarly journals BURNUP SENSITIVITY CALCULATIONS WITH CBZ FOR LIGHT WATER REACTOR ASSEMBLY PROBLEMS

2021 ◽  
Vol 247 ◽  
pp. 15013
Author(s):  
Go Chiba
Keyword(s):  
Perturbation Theory ◽  
Nuclear Fuel ◽  
Nuclear Data ◽  
Light Water Reactor ◽  
Code System ◽  
Reactor Physics ◽  
Light Water ◽  
Water Reactor ◽  
Fuel Assemblies ◽  
Reactor Assembly

Sensitivities of k∞ and nuclides number densities during nuclear fuel burnup with respect to nuclear data are calculated with a reactor physics code system CBZ. Sensitivity calculations are carried out with the depletion perturbation theory applicable to nuclear fuel assemblies including burnable absorbers. Numerical results are presented both for BWR and PWR assemblies, and those demonstrate usefulness and effectiveness of burnup sensitivity calculation capabilities for LWR fuel assemblies.

scholarly journals Uncertainty quantification works relevant to fission yields and decay data

2018 ◽  
Vol 4 ◽  
pp. 43
Author(s):  
Go Chiba ◽  
Shunsuke Nihira
Keyword(s):  
Perturbation Theory ◽  
Uncertainty Quantification ◽  
Nuclear Data ◽  
Code System ◽  
Reactor Physics ◽  
Delayed Neutrons ◽  
Decay Data ◽  
Decay Heat ◽  
Numerical Tools ◽  
Fission Yields

In the present paper, firstly, we review our previous works on uncertainty quantification (UQ) of reactor physics parameters. This consists of (1) development of numerical tools based on the depletion perturbation theory (DPT), (2) linearity of reactor physics parameters to nuclear data, (3) UQ of decay heat and its reduction, and (4) correlation between decay heat and β-delayed neutrons emission. Secondly, we show results of extensive calculations about UQ on decay heat with several different numerical conditions by the DPT-based capability of a reactor physics code system CBZ.

Reflooding investigation on light water reactor model fuel assemblies and debris under the loss of coolant accident simulation

2017 ◽  
Vol 55 (6) ◽  
pp. 914-921 ◽  
Author(s):  
S. S. Bazyuk ◽  
Yu. A. Kuzma-Kichta ◽  
N. Ya. Parshin ◽  
E. B. Popov ◽  
D. M. Soldatkin
Keyword(s):  
Light Water Reactor ◽  
Reactor Model ◽  
Light Water ◽  
Water Reactor ◽  
Loss Of Coolant Accident ◽  
Model Fuel ◽  
Fuel Assemblies ◽  
Loss Of Coolant ◽  
Accident Simulation
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