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Uranium Mine and Mill Resident Individual Dose Calculator

(last updated 19 Jul 2005)
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Calculate individual dose and health risks from inhalation of radon and uranium dust to residents living near uranium mines, mills, and mill tailings.

Enter a value into any one field of the Material Balance and click the "Calculate" button below. HELP new window
"t" means metric tonne.

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Material Balance
 ProductWaste
Uranium Mineannual t/a Ore (= t/a U) t/a Waste Rock
total t Ore (= t U) t Waste Rock
Uranium Millannual t/a U3O8 (= t/a U) t/a Mill Tailings
total t U3O8 (= t U) t Mill Tailings

Lifetime Dose and Health Risk Summary
SourceLifetime Dose [mSv]Lifetime Cancer Risk
in operationafter shutdowntotal[%]1:
Mine 
Mill 
Mill Tailings
Total

Lifetime Dose Summary Charts

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Annual Dose Summary
SourceDose Rate [mSv/a]
in operationafter shutdown
DustRadonTotalRadon
Mine 
Mill 
Mill Tailings
Total

Average Air Concentration
SourceU-238 [µBq/m3]Rn-222 [Bq/m3 EEC]
in ore dustin U3O8 dustin tailings dust
in operationin operationin operationin operationafter shutdown
Mine   
Mill  
Mill Tailings  
Total

Source Term
SourceU-238 [MBq/a]Radon-222 [TBq/a]
in ore dustin U3O8 dustin tailings dust
in operationin operationin operationin operationafter shutdown
Mine   
Mill  
Mill Tailings  
Total

Show charts of lifetime dose vs. distance and wind direction

Radon-222 Release Rate from Tailings
barecoveredU.S. EPA Standard (40 CFR 192)
Bq/m2sBq/m2s0.74 Bq/m2s

     Health Risk Parameters    
Mine new window Operational Life of Mine (and Mill): years
Specific Radon Emission: GBq/t U3O8
Specific Ore Dust Emission: g/t ore mined
Effective Release Height: m
Mill new window Specific Radon Emission: GBq/t U3O8
Specific Ore Dust Emission: g/t ore milled
Specific U3O8 Dust Emission: g/t U3O8 produced
Effective Release Height: m
Mill Tailings new window
Deposit new window		 Tailings Thickness: m  ·  Tailings Density: g/cm3
Specific Radon Exhalation Rate: Bq/m2s per BqRa-226/g
Specific Tailings Dust Emission Rate: g/(m2d)
Effective Release Height: m
Time to Cover Installation: years · Cover Radon Retention: %
Common Data new window Distance of Resident from Mine/Mill/Tailings: km
Mixing Layer Height: m
Annual Precipitation: cm (used in precise mode only)
Radon Progeny Equilibrium Fraction: (used in fast mode only)
Air Dispersion Calculation Mode: Fast   Precise (recommended)

  Fractional Frequency of Wind Speed Classes  
Sector (wind from):  
Sta-
bility
Class		Average Wind Speed [m/s]
A%%%%%%
B%%%%%%
C%%%%%%
D%%%%%%
E%%%%%%
F%%%%%%
This is 1 out of wind direction sectors
General Data new window Radon Dose Factor: nSv/h per Bq/m3 EEC
Uranium Inhalation Dose Factor (natural uranium with progeny): µSv/Bq U-238
Uranium Inhalation Dose Factor (pure natural uranium): µSv/Bq U-238
Breathing rate (public): m3/h
Radiation Risk Factor: per Sv
Lifetime: years

    Process Parameters    
Ore Deposit Waste/Ore Ratio:  ·  Ore Grade: % U
Mill Extraction Losses: %

> See also:

 

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