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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.
Alireza Haghighat, George Kosály
Nuclear Science and Engineering | Volume 101 | Number 1 | January 1989 | Pages 8-25
Technical Paper | doi.org/10.13182/NSE89-A23591
Articles are hosted by Taylor and Francis Online.
The field of view of a boiling water reactor (BWR) in-core detector is evaluated via a combined R-Z transport and X-Y-Z diffusion theory model. A cell homogeneous X-Y-Z diffusion theory model is sufficient for the evaluation of the adjoint function distribution around an in-core BWR detector. All types of subchannels (i.e., side, center, and corner) contribute to the detector signal fluctuations, and the side subchannels are the dominant contributor. Finally, the measured flow velocity via the cross-correlation method in a BWR is an averaged quantity rather than a localized quantity.
