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The two reactors at Dominion Energy’s Surry plant are among the oldest in the U.S. nuclear fleet. Yet when the plant celebrated its 50th anniversary in 2023, staff could raise a toast to the future. Surry was one of the first plants to file a subsequent license renewal (SLR) application, and in May 2021, it became official: the plant was licensed to operate for a full 80 years, extending its reactors’ lifespans into 2052 and 2053.
E. L. Dorval, M. A. Arribére, S. Ribeiro Guevara
Nuclear Science and Engineering | Volume 159 | Number 2 | June 2008 | Pages 199-212
Technical Paper | doi.org/10.13182/NSE159-199
Articles are hosted by Taylor and Francis Online.
Neutron capture resonance integrals of the reactions 79Br(n, )80Brm, 79Br(n, )80Brg, 81Br(n, )82Brm, 81Br(n, )82Brg, and 81Br(n, )82Brm+g have been measured under 1-mm-thick cadmium covers inside the core of the RA-6 research reactor. The measured values are, respectively, (29.2 ± 3.1) b, (86.1 ± 8.9) b, (40.9 ± 2.3) b, (5.1 ± 1.1) b, and (46.8 ± 2.3) b. Resonance integrals of the reactions 79Br(n, )80Brm and 81Br(n, )82Brm were also measured by a direct method using the gamma ray from the isomeric transition. The results are (30.3 ± 2.6) b and (42.7 ± 4.0) b, respectively. All measured resonance integrals are referred to the standard value (1562 ± 48) b, corresponding to the reaction 197Au(n, )198Au. Spectrum unfolding with the STAY'SL code showed the 1/E behavior of the neutron energy spectrum in the epithermal range. Good agreement was found between the results of this work and others published in the literature. Perturbations of epithermal activation due to the presence of cadmium covers are discussed and corrected in the cases where differential cross-section data are available.
