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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.
D. A. Niebruegge, E. L. Tolman, C. W. Solbrig
Nuclear Science and Engineering | Volume 68 | Number 3 | December 1978 | Pages 363-368
Technical Note | doi.org/10.13182/NSE78-A27316
Articles are hosted by Taylor and Francis Online.
Thus far, existing computer programs have been adequate to predict the behavior of the loss-of-fluid test facility (LOFT) non-nuclear loss-of-coolant experiments. The work presented here describes a predictive capability for modeling nuclear experiments to determine if the same fuel can be used in several experiments. This is analogous to determining if fuel may be reused after a pressurized water reactor loss-of-coolant accident. We are concerned here with discussing only best-estimate calculations for experimental predictions and not the conservative models used for licensing. It was found that an adequate analysis procedure could be established by modeling accurately the fuel stored energy before the experiment is initiated. The initial stored energy in the fuel was found to be the most important fuel rod parameter influencing the maximum cladding temperature obtained in the transient.