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Swiss nuclear power and the case for long-term operation
Designed for 40 years but built to last far longer, Switzerland’s nuclear power plants have all entered long-term operation. Yet age alone says little about safety or performance. Through continuous upgrades, strict regulatory oversight, and extensive aging management, the country’s reactors are being prepared for decades of continued operation, in line with international practice.
Richard Simms, George S. Stanford, Charles L. Fink, James P. Regis
Nuclear Technology | Volume 55 | Number 3 | December 1981 | Pages 594-600
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT81-A32804
Articles are hosted by Taylor and Francis Online.
The reactivity feedback from fuel relocation is a central issue in the analysis of a loss-of-flow (LOF) accident in a liquid-metal fast breeder reactor (LMFBR). Fuel relocation has been the subject of a number of LOF simulations in the Transient Reactor Test Facility (TREAT). In this study, the results of these tests are analyzed using, as the principal figure of merit, the changes in equivalent fuel worth associated with the fuel motion. The equivalent fuel worth was obtained from the measured axial fuel distributions by weighting the data with a typical LMFBR fuel worth function. At nominal power, the initial fuel relocation resulted in increases in equivalent fuel worth. Above nominal power, the fuel motion was mildly dispersive, but the dispersive driving forces could not unequivocally be identified.