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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. W. Meadows
Nuclear Science and Engineering | Volume 65 | Number 1 | January 1978 | Pages 171-174
Technical Note | doi.org/10.13182/NSE78-2
Articles are hosted by Taylor and Francis Online.
Fission cross-section ratio measurements were made in the 2- to 3-MeV region using 235U samples with 234U and 236U samples containing ∼10% 235U. Atom ratios were obtained from measured thermal fission ratios and the isotopic analysis and also by alpha counting. Shape measurements were made from threshold to 10 MeV using pure samples and were normalized in the 2- to 3-MeV region. The present values for the 234U: 235U ratio are up to 5% greater than those previously reported. The results for 236U generally agree with those in the literature except for the values reported by Stein et al., which are also lower.
