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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.
Albert E. Richardson, Harold L. Wright, John L. Meason, James R. Smith
Nuclear Science and Engineering | Volume 94 | Number 4 | December 1986 | Pages 413-425
Technical Note | doi.org/10.13182/NSE86-A18351
Articles are hosted by Taylor and Francis Online.
The mass-yield distribution of fission products following degraded-fission-spectrum neutron-induced fission of 232Th was measured by gamma spectrometry for 25 mass chains including mass 138 for the first time for fast fission. Cumulative yields for 83gSe and 130gSb were observed, the latter also for the first time for fast fission. In general, the yields for degraded-fission-spectrum neutron-induced fission of 232Th were slightly higher in the inner portions of both the heavy and light mass wings than for those from reactor-neutron-induced fission of 232Th. This was expected, since the average energy of degraded-fission-spectrum neutrons is slightly above that of reactor neutrons.
