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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.
C. E. Meyer, C. L. Bennett, D. J. Hill, K. J. Dzikowski
Nuclear Technology | Volume 41 | Number 1 | November 1978 | Pages 27-35
Technical Paper | Reactor | doi.org/10.13182/NT78-A32130
Articles are hosted by Taylor and Francis Online.
A control bank redesign and a modified control strategy have been developed to improve load follow capabilities in commercial pressurized water reactors (PWRs). The use of controlled moderator temperature reductions adds to both load follow and return-to-power capability through an inherently negative moderator temperature coefficient. Using the new control strategy, a PWR can typically return from part power to at least a 90% power level at a 5%/min rate during daily load cycles, and also follow daily load cycles out to 98% of core life.