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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.
E. Creutz
Nuclear Science and Engineering | Volume 53 | Number 1 | January 1974 | Pages 107-109
Technical Paper | doi.org/10.13182/NSE74-A23333
Articles are hosted by Taylor and Francis Online.
An expression for the gas permeability of capillaries covering the entire range of the diffusion, transition, and Poiseuille regions is given. It makes use of an expression for the viscosity when the mean free path is comparable to, or greater than, the capillary radius. One parameter occurs which, when adjusted to fit Knudsen’s data, gives a minimum in the permeability at r/λ = 0.45.
