Calculation of radon flux attenuation by earthen uranium mill tailings covers

Technical Report · Thu Jun 01 00:00:00 EDT 1989

DOI:https://doi.org/10.2172/5787888· OSTI ID:5787888

This regulatory guide describes methods acceptable to the NRC staff for calculating radon fluxes through earthen covers and for calculating the resulting minimum cover thickness needed to meet NRC and EPA standards. The guide also suggests methods for obtaining the various parameters used in calculating the radon fluxes and earthen cover thicknesses and suggests default values for certain parameters. This regulatory guide is applicable to active uranium tailings sites. The NRC staff is using the methods stated in this guide as a basis for review and concurrence of DOE remedial action plans for inactive sites. The guidance is intended to be used for calculating radon flux attenuation by earthen uranium mill tailings covers. The parameter values and examples presented are limited to earthen cover materials, but the diffusion theory and the methods presented are also applicable to man-made materials. Detailed supporting information for calculating minimum cover thickness is published separately in the ''Radon Attenuation Handbook for Uranium Mill Tailings Cover Design,'' NUREG/CR-3533 (Ref. 1).

• Research Organization: US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Office of Nuclear Regulatory Research
• OSTI ID: 5787888
• Report Number(s): REG/G-3.64; ON: TI89016459
• Country of Publication: United States
• Language: English

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