Environment-insensitive equivalent diffusion theory group constants for pressurized water reactor radial reflector regions

Journal Article · Fri Dec 01 00:00:00 EST 1989 · Nuclear Science and Engineering; (USA)

OSTI ID:6922976

Muller, E Z ^[1]

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1. Atomic Energy Corp. of South Africa (Pty) Ltd., Pretoria (South Africa)

A novel one-dimensional approach, which combines the nodal equivalence theory and response matrix homogenization methods, is developed for generating equivalent few-group nodal diffusion parameters for the radial reflector of a pressurized water reactor. This nodal reflector model has the advantage that it is much less sensitive to reactor core conditions than conventional nodal equivalence theory models. A special one-dimensional nodal equivalence theory reflector model is described and applied in numerical experiments to investigate the significance of the environment dependence of such models. Numerical results are presented to confirm the environment insensitivity of the new model and to illustrate its feasibility for application to multidimensional nodal rector analysis.

• OSTI ID: 6922976
• Journal Information: Nuclear Science and Engineering; (USA), Vol. 103:4; ISSN 0029-5639
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
NEUTRON REFLECTORS
ONE-DIMENSIONAL CALCULATIONS
PWR TYPE REACTORS
REACTOR SAFETY EXPERIMENTS
CALCULATION METHODS
NEUTRON TRANSPORT THEORY
SPECTRAL RESPONSE
REACTORS
TRANSPORT THEORY
WATER COOLED REACTORS
WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled