Critical Experiments with Solid Neutron Absorbers and Water-Moderated Fast Test Reactor Fuel Pins
| Autor: | B.M. Durst, J.F. Mincey, E. D. Clayton, S. R. Bierman |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Fissile material Nuclear engineering Uranium dioxide Hydrogen atom Condensed Matter Physics Rod Nuclear physics chemistry.chemical_compound Neutron capture Nuclear Energy and Engineering chemistry Surface-area-to-volume ratio Criticality Lattice (order) |
| Zdroj: | Nuclear Technology. 48:128-149 |
| ISSN: | 1943-7471 0029-5450 |
| Popis: | A series of experiments was performed at the Battelle-Pacific Northwest Laboratories on water-flooded arrays of Fast Test Reactor fuel elements (PuO/sub 2/-UO/sub 2/) intermixed with solid neutron absorbers. The objective of these experiments was to provide reliable experiment data that could be used to benchmark computer codes and calculational schemes commonly used in criticality analysis of such systems. The neutron absorbers used were cadmium and Boral plates and gadolinium cylindrical rods. Critical array sizes were determined for square lattice pitches ranging from 9.7 to 24.9 mm, corresponding to water-to-fuel volume ratios of 3.5 to approx. 31 (hydrogen atom to fissile atom ratios of 58 to 473). For both systems, poisoned and unpoisoned, the minimum number of rods required for criticality occurred at a lattice pitch of approx. 20.5 mm, which also corresponds to a water-to-fuel volume ratio of 20.5. |
| Databáze: | OpenAIRE |
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