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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.
R. F. Saxe, K. Verghese, P. G. Ibrahim
Nuclear Science and Engineering | Volume 75 | Number 2 | August 1980 | Pages 190-191
Technical Note | doi.org/10.13182/NSE80-A21309
Articles are hosted by Taylor and Francis Online.
Static calculations using the computer code LEOPARD have been used to investigate the effect of fuel rod motion on neutron-density noise during core burnup of a pressurized water reactor (PWR). These calculations show a variation with burnup in agreement with the experiment and give approximate quantitative agreement with the experiment for the root-mean-square value of the noise for reasonable assumed values of fuel rod motion. It is suggested, therefore, that fuel rod motion is a likely source of neutron-density noise in a PWR.
