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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.
D. Brandt
Nuclear Science and Engineering | Volume 79 | Number 4 | December 1981 | Pages 333-339
Technical Paper | doi.org/10.13182/NSE81-A21385
Articles are hosted by Taylor and Francis Online.
A semianalytical method is developed for solving the stationary neutron transport equation in plane geometry. The angular variable is treated fully analytically, while the spatial dependence is approximated by the two-point Hermite method of arbitrary order k. The theory will be applied to a multigroup, multizone calculation of shields with PL scattering. Although the treatment is restricted to a k = 1 Hermite approximation, results are improved by introducing asymptotic coefficients simulating the k = ∞ case. Comparison with ANISN shows that the present method converges faster and leads to shorter computing times.