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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.
Evan T. Williams, Charles D. Coryell
Nuclear Technology | Volume 2 | Number 3 | June 1966 | Pages 256-258
Technical Paper and Note | doi.org/10.13182/NT66-A27598
Articles are hosted by Taylor and Francis Online.
Two experiments have shown that 87Br is the major contributor to the 55-sec delayed-neutron activity in 235U thermal-neutron fission products. An upper limit of 0.5% has been set on the possible contribution to the total 55-sec delayed-neutron activity by unknown precursors with half-life of the order of 55-sec or longer. The half-life of87Br has been accurately measured by observing the neutron decay in chemically pure bromine samples and was found to be 55.4 ± 0.7 sec.
