The Physical Basis for the Void Reactivity Effect and Its Dependence on Absorber Rod Configuration in the RBMK-1000
| Autor: | A. R. Dastur, P. S. W. Chan |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Materials science
020209 energy 02 engineering and technology Mechanics urologic and male genital diseases Rod Void coefficient Neutron capture 020303 mechanical engineering & transports 0203 mechanical engineering Nuclear Energy and Engineering Lattice (order) 0202 electrical engineering electronic engineering information engineering RBMK sense organs Graphite Neutron moderator Reactor safety |
| Zdroj: | Nuclear Science and Engineering. 103:283-288 |
| ISSN: | 1943-748X 0029-5639 |
| DOI: | 10.13182/nse89-a23679 |
| Popis: | The components of the void reactivity effect in the RBMK lattice are obtained using multi-group multidimensional lattice codes. The relative magnitudes of the reactivity change due to changes, on voiding, in neutron absorption and in neutron moderation are compared for several lattice configurations that include either absorber rods or followers of various materials. This has led to the identification of the mechanism that makes the void coefficient dependent on the number of absorber rods in the core. In line with these results, it is shown that replacing the graphite in the follower with non-moderating materials reduces the void coefficient dependence on the number of absorber rods and is an economic method that may have potential in the void coefficient reduction program. |
| Databáze: | OpenAIRE |
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