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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.
Eugene Goldberg, Ronald L. Barber, Norman A. Bonner, Clyde M. Griffith, David R. Nethaway, Robert C. Haight
Nuclear Science and Engineering | Volume 94 | Number 2 | October 1986 | Pages 120-135
Technical Paper | doi.org/10.13182/NSE86-A27447
Articles are hosted by Taylor and Francis Online.
A large cylindrical assembly of 6LiD was irradiated by neutrons from a high-intensity deuterium-tritium source. Small samples of 6Li, 7Li, and 6LiH, all encapsulated in lead, were positioned along the assembly axis and served as indicators for 4He and tritium production. The amount of 4He was determined by isotope dilution mass spectrometry while the tritium content of the 6LiH wafers was measured by proportional counting of gas samples. Careful comparison of the results with TART Monte Carlo calculations showed excellent agreement. For 4He generation, the experimental values were 1.01 ± 0.06 times those of the calculations, while for tritium the ratio was 1.055 ± 0.07.
