LIFETIME STUDIES FOR THE N.S. SAVANNAH REACTOR
Previous studies of the N.S. Savannah core I reactor were extended by a series of one-dimensional lifetime calculations to investigate several questions of interest in the operation of the reactor. Replacement of the two-zone loading by a single-zone loading with the inner-zone enrichment was found to have only a small effect on the calculated reactivity lifetime. The time-dependent core inventories of U/sup 235/, Pu/sup 239/, and Pu/sup 241/ for core I were calculated Various fuel-management schemes for extending the reactivity lifetime of core I were investigated, and the data showed that the largest lifetime extension would be obtained by changing the fuel-element container material from stainless steel to Zircaloy. One-dimensional radial and one-dimensional axial window-shade'' burnup calculations were compared, and the results of the two methods were in excellent agreement with regard to the predicted core lifetime. Although the radial burnup calculation is much simplier, the window-shade calculation provides essential information on axial power distribution and control-rod bank movements. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-17-019629
- OSTI ID:
- 4735242
- Report Number(s):
- ORNL-3261(Suppl.)
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- United States
- Language:
- English
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