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Nuclear Fuel Chain Waste Activity Calculator

(last updated 5 Nov 2021)
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For educational purposes only. No warranty.
ORNL is the source of the decay data used in this calculator.

Calculate activities and radioactive decay of the wastes arising from nuclear fuel production and power plant operation: uranium mine waste rock, uranium mill tailings, depleted uranium, and spent fuel.

Enter a value into any one field of the Material Balance and click the "Calculate" button below. HELP
Numbers can be entered in exponential notation: 5 · 10-6 = 5e-6
"t" means metric tonne.

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Material Balance
ProductWaste
Uranium Mine *) t Ore (= t U) t Waste Rock
Uranium Mill *) t U3O8 (= t U) t Mill Tailings
Conversion *) t UF6 (= t U) (nat)
Enrichment *) t UF6 (= t U) (enriched) t UF6
(= t U) (depleted)
Fuel Fab. *) t UO2 (= t U)
Power Plant GWhe ( = GWae) t spent fuel
(= t HM)
*) applies to UO2 fuel only

Output Parameters
Time PeriodChart Options
Start: a (years)
End: a (years)
no chart
total activities *)
*) may take several minutes on old machines

HELP

Results

(... copy and paste ...)

(Click legend items to toggle specific curves on/off)

Process Parameters
Ore Deposit *) Waste/Ore Ratio:  ·  Waste Rock Grade: wt-% U
Mill *) Extraction Losses: %
Conversion *) Losses: %
Enrichment *) Tails Assay: wt-% U-235
Fuel Fabrication *) Losses: %
Power Plant Fuel · Type · Burnup · Initial Enrichment
·  Efficiency: %
*) applies to UO2 fuel only

ORNL is the source of the decay data used in this calculator.