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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.
Kazuo Shin, Hiroyuki Nakano, Tomonori Hyodo
Nuclear Science and Engineering | Volume 85 | Number 3 | November 1983 | Pages 280-288
Technical Paper | doi.org/10.13182/NSE83-A17320
Articles are hosted by Taylor and Francis Online.
Measurements of neutron number albedos for double-layered slabs are made using a collimated beam of fission neutrons from a 252Cf source. The dependence of the number albedos on the first layer thickness is examined and compared with that for single-layered slabs. It is shown that the difference between the number albedos of one- and two-layered slabs is very large and that the albedos change exponentially with the thickness of the first layer.
