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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.
M. R. Mendelson, M. L. Storm
Nuclear Science and Engineering | Volume 45 | Number 2 | August 1971 | Pages 182-188
Technical Paper | doi.org/10.13182/NSE71-A20884
Articles are hosted by Taylor and Francis Online.
P1 blackness theory for infinite cylinders is developed in a manner analogous to the case of infinite slabs by defining effective diffusion theory cross sections in the “black” region which reproduce the desired boundary condition at the surface. Results of numerical analysis of a model problem are presented and the relative improvement of P1 blackness theory over normal P1 theory is compared with similar results for infinite slabs.
