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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. G. Alsmiller, Jr., R. T. Santoro, R. L. Childs, J. M. Barnes, J. L. Lucius
Nuclear Science and Engineering | Volume 83 | Number 3 | March 1983 | Pages 389-393
Technical Note | doi.org/10.13182/NSE83-A17573
Articles are hosted by Taylor and Francis Online.
Calculated and experimental results for the transmission gamma-ray spectra when ∼14-MeV neutrons are incident on a laminated slab configuration of stainless steel, borated polyethylene, and Hevimet (90 wt% tungsten, 6 wt% nickel, 4 wt% copper) were shown to be in substantial disagreement. The results of a cross-section sensitivity analysis (based on the two-dimensional model of the experiment used previously) are presented. In the analysis, only the nuclear cross-section data for the elements in Hevimet were considered. The cross-section sensitivities are found to be quite small, and it is unlikely that the disagreement is due to errors in the cross-section data used for the elements in Hevimet.
