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September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Yujiro Ikeda, Fujio Maekawa, Robert Johnson, Yoshimi Kasugai, Yoshitomo Uno, Edward T. Cheng
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 714-718
Neutronics Experiments and Analysis | doi.org/10.13182/FST98-A11963698
Articles are hosted by Taylor and Francis Online.
Induced radioactivity characteristics of vanadium alloys irradiated with 14 MeV neutrons were investigated. Short and long 14 MeV irradiation modes were employed to distinguish the characteristic of radioisotopes according to their half-lives. Radioactivities in several different V-alloy samples were measured by the γ-ray spectrometry. Along with the radionuclides induced in the major constituents, those from impurities were simultaneously identified by the activation analysis. The decay profiles of the induced radioisotopes were compared with the calculation using the comprehensive activation cross section libraries of FENDL/A-2,.0 and JENDL-ACT96. From the ratios of calculation and experiment (C/E), it was proved that the FENDL/A-2.0 and JENDL-ACT96 are adequate to predict the dominant radionuclide in V, Ti, and Cr. However, there was significant underestimation for activation products of impurities of Si, Fe, Ni, Nb and possibly Mo. In particular, the amounts of Nb impurity, which ranges from 70 to 100 ppm, is almost the same as that of the chemical analysis.
