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NRC proposes changes to its rules on nuclear materials
In response to Executive Order 14300, “Ordering the Reform of the Nuclear Regulatory Commission,” the NRC is proposing sweeping changes to its rules governing the use of nuclear materials that are widely used in industry, medicine, and research. The changes would amend NRC regulations for the licensing of nuclear byproduct material, some source material, and some special nuclear material.
As published in the May 18 Federal Register, the NRC is seeking public comment on this proposed rule and draft interim guidance until July 2.
J. F. Whalen, A. B. Smith
Nuclear Science and Engineering | Volume 67 | Number 1 | July 1978 | Pages 129-130
Technical Note | doi.org/10.13182/NSE78-A27243
Articles are hosted by Taylor and Francis Online.
The energy-averaged neutron total cross sections of thorium were measured from ∼0.1 to 5.0 MeV with statistical accuracies of ≤2%. The experimental results are larger than the values given in ENDF/B-IV by as much as 10 to 15% in energy regions of prime relevance to thorium-233U fast fission reactor concepts. These large differences imply major changes in evaluated neutron cross sections essential for thorium cycle neutronic assessments. All measured data reported have been transmitted to the National Nuclear Data Center, Brookhaven National Laboratory.
