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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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November 15–19, 2020
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Nuclear Science and Engineering
Fusion Science and Technology
NRC’s Inspector General issues report
Overall findings of a survey of Nuclear Regulatory Commission personnel indicate that while the NRC maintains a few strengths compared to external benchmarks, results have declined since 2015 in a number of areas, according to a recent report from the NRC’s Office of the Inspector General (OIG).
The survey was conducted in February 2020 by Willis Towers Watson, a global risk-management, insurance brokerage, and advisory firm that has partnered with the OIG for more than 20 years to assess the NRC’s safety culture and climate, as well as other aspects of employee experience.
Fusion Science and Technology | Volume 4 | Number 2 | September 1983 | Pages 339-347
Alternate Fuels | dx.doi.org/10.13182/FST83-A22888
Articles are hosted by Taylor and Francis Online.
Alternate fusion fuels, i.e., fuels based on cycles other than d-t, are advocated because of apparent safety and environmental advantages, such as low activation of reactor materials and the relaxation of the requirement for tritium breeding that one needs for a d-t fusion reactor. Nevertheless, the lower fusion reaction rates and the higher required operating temperatures have suggested that the reactor performance would be inferior to that of a d-t reactor. This question of reactor performance relative to fuel cycle is examined here in the restricted context d-t versus d-d (with variations) In tokamaks, reversed-field pinches and tandem mirrors, although results relative to other concepts and cycles are reviewed. Each reactor concept is assessed relative to the relevant physics, engineering, cost and safety issues. There are distinct physics and technical leverages for each of the concepts, but many common features as well. For example, all three concepts require no blanket tritium breeding and have a much lower tritium inventory than their d-t counterparts, as well as, longer blanket lifetime, greater blanket efficiency, higher neutron energy multiplication and less activation. The physics constraints are not necessarily greater and cost per net power output between d-t and d-d reactors can be comparable.