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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.
S. Pelloni, J. Stepanek, P. Vontobel
Nuclear Science and Engineering | Volume 103 | Number 3 | November 1989 | Pages 247-253
Technical Paper | doi.org/10.13182/NSE89-A23675
Articles are hosted by Taylor and Francis Online.
The capability of the Advanced Analysis of Reactor Engineering (AARE) modular code system and JEF-1-based nuclear data libraries to analyze light water high converter reactor (LWHCR) lattices is investigated by calculating the wet and dry cells of the PROTEUS-L WHCR phase II experiment. The results are compared to those obtained using several cell codes. Main features of the AARE code system, such as the self-shielding of resonance cross sections in the whole energy range, the generation of adequate fission source spectra, and the efficiency of the elastic removal correction, are investigated. In particular, it is shown that AARE results for the k∞ void coefficient agree very well with the experiment, whereas other codes give larger deviations.
