Document: NRC Regulatory Guide
Document ID: c0dbb594-6262-4b83-96b1-366758ad9676
Document Type: regulatory_guide
Title: Interim Licensing policy on as low as Practicable for Gaseous Radiodine Releases from Light-Water-Cooled Nuclear Power Reactors (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1229/ML12298A137.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.42
CFR Part: 
CFR Title: 

Content:
provided in the calculation of adult vegetation pathway thyroid dose. Consequently, the annual dose that would be delivered to an adult re- siding in a radioiodine concentration of Cij (r,e O) curies per cubic meter is as given below: Adult Annual Inhalation Nuclide Thyroid Dose-(mrem/yr) 1-131 C 131,J (0.84)(1500) MPC a .1-133 C,333,j (0.82)(1500) MPCa Alternative representations of the above adult dose relations are: D1 3 1 (mrem/yr) = 4.0 x 105 (x/Q) Q1 3 1R (26) and D (mrem/yr) f 9.8 x 104. (x/Q)j Q133R (27) 133 In Equations 26 and 27, (x/Q) is given in seconds per cubic meter, Q is given in curies per year and R, from Equation 2, is dimensionless. 'i 1. 42-C14 eS References 1. "Final Environmental Statement Concerning Proposed Rule Making Action," Vol. I, Annex 6B, Directorate of Regulatory Standards, WASH-1258, U. S. Atomic Energy Commission, July 1973. 2. Beattie, J. R. and Bryant, P. M., "Assessment of Environmental Hazards from Reactor Fission Product Release," AHSB (S) R-135, 1970. 3. Peterson, H. T. and Smith, J. M., "Guides for Predicting Thyroid Dose from Environmental Measurements Following Radioiodine Releases. Environ- mental Surveillance in the Vicinity of Nuclear Facilities," (W.C. Reinig, ed.), Charles C. Thomas, 1970. 4. Peters, L. M. and Witherspoon, J. P., "Retention of 44-88 V Simulated Fallout Particles by Grasses," Health Physics 22, 261, 1972. 5. Eckman, L. et al., "Studies on the Relationship between Iodine-131 Deposited on Pasture and its Concentration in Milk," Health Physics, 13, 701, 1967. 6. Booker, D. V., "Physical Measurements of Activity in Samples from Windscale," AERE HP/R 2607, 1958. 7. Cline, D. F. et al., "Effect of Physical and Biological Conditions on Deposition and Retention of 1-131 on Plants," Health Physics, 11, 713,. 1965. 8. Hull, A. P., "Vegetation Retention and Vegetation - Milk Ratio of Fall out 131I," Health Physics, 9, 1173, 1963. 9. Barry, P. J. and Chamberlain, R. C., "Deposition of 1311 onto Plant Leaves from