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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.
K. B. Lee, Richard Madey
Nuclear Science and Engineering | Volume 43 | Number 1 | January 1971 | Pages 27-31
Technical Paper | doi.org/10.13182/NSE71-A21242
Articles are hosted by Taylor and Francis Online.
Experimental data of Cantelow on the time-dependent transmission of 133Xe in air flowing steadily through fixed beds packed with activated charcoal adsorbent are reinterpreted on the basis of a dispersion model in terms of a dimensionless dispersion number and an effective adsorption capacity for the gas-adsorbent system. The transmission is the ratio of the concentration at the outlet of the adsorber bed to the concentration at the inlet to the bed. The dispersion model provides an alternative interpretation to the theoretical plate model for the transport of a gas through a packed bed. For the range of dimensionless dispersion numbers represented by the data, the two models lead to the same values for the effective adsorption capacity. The reciprocal of the dimensionless dispersion number is equal to twice the theoretical plate number.
