VOID COEFFICIENT MEASUREMENTS IN ZEEP
Technical Report
·
OSTI ID:4155391
Measurements were made in ZEEP to determine the reactivity effect of a loss of coolant in 7- and 19-element UO/sub 2/ cluster lattices. The effects of expelling the coolant (a) from a single cluster at various positions in the lattice, (b) from various groups of clusters including all 55, and (c) partially from all clusters at the same time were measured for a hexagonal lattice of 7-element UO/sub 2/ clusters having a pitch of 24.56 cm. The effect of varying the D/sub 2/O purity was studied in this lattice. For the 19-element UO/sub 2/ lattices, single cluster experiments only were done for a range of lattice pitches. It was found that the experimental results could be satisfactorily explained, except in the region of core-reflector boundaries, using a bare pile perturbation treatment which takes into account the anisotropy in the diffusion constant when the coolant is removed. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River Project, Chalk River, Ontario (Canada)
- NSA Number:
- NSA-14-023684
- OSTI ID:
- 4155391
- Report Number(s):
- AECL-1053; CRRP-942
- Country of Publication:
- Canada
- Language:
- English
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