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Study of the Self-Controllability for the Fast Reactor Core with High-Thermal-Conductivity Fuel
- Source :
- Journal of Nuclear Science and Technology. 47:684-697
- Publication Year :
- 2010
- Publisher :
- Informa UK Limited, 2010.
-
Abstract
- The tolerance capability against ATWS for the FBR core with metallic fuel can be improved by employing a fuel with high thermal conductivity (HTC fuel) instead of the conventional metallic fuel, UPu-Zr. To investigate the self-controllability for the HTC-fueled core with U-Pu-Al alloy fuel, having one order of magnitude higher thermal conductivity than that of the U-Pu-Zr, the core employing the U-Pu-Al fuel was evaluated against ULOF and UTOP. Based on the systematic calculation, it was found that the larger temperature margin between the steady state and ULOF/UTOP conditions caused the excellent tolerance capability against ULOF and UTOP for the HTC-fueled core compared with that for the Zralloy-fueled core. Also, the conditions of the core reactivity coefficients required for neither fuel melting nor coolant boiling were investigated by using a “self-controllability map” consisting of effective fuel and coolant reactivities. As a result, the self-controllable region was found to be expanded especially ...
Details
- ISSN :
- 18811248 and 00223131
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Journal of Nuclear Science and Technology
- Accession number :
- edsair.doi...........0dd36c078b15e3bf7aced18f40936cb0