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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.
S. Pearlstein
Nuclear Science and Engineering | Volume 68 | Number 1 | October 1978 | Pages 55-60
Technical Paper | doi.org/10.13182/NSE78-A27270
Articles are hosted by Taylor and Francis Online.
Measured neutron emission spectra from 14-MeV neutron-induced reactions in a wide range of nuclei are analyzed by precompound nuclear model calculations. The nuclear model code parameters are adjusted using a least-squares fitting procedure to optimize the agreement between calculation and experiment, but the parameters are constrained to physically reasonable values. A single set of input nuclear constants produces calculated spectra that agree to within 30% of experimental values in over 70% of the cases.
