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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.
R. L. Macklin, C. W. Alexander
Nuclear Science and Engineering | Volume 104 | Number 3 | March 1990 | Pages 258-270
Technical Paper | doi.org/10.13182/NSE90-A23724
Articles are hosted by Taylor and Francis Online.
Uranium-236 neutron absorption is measured as a function of neutron time of flight from 20 eV to 1 MeV. The neutron flux is monitored with a 6Li glass scintillator. Average cross sections from 3 keV to 1 MeV are derived. Estimated uncertainties are <5% below 600 keV and increase to 9.5% at 1 MeV. From 20-eV to 4.2-keV neutron energy, 293 resonance peaks are parameterized.
