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JOL's Friendly Enrichment Calculator

(last updated 23 Mar 2020)
This calculator is based on "JOL's Friendly Enrichment Program" and is provided here courtesy of J.O. Liljenzin†.
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For educational purposes only. No warranty. Commercial use prohibited. (c) WISE Uranium Project

Performs detailed calculations for the enrichment of natural and reprocessed uranium by gaseous diffusion: mass balance, concentrations of minor isotopes, the additional enrichment required to compensate for the presence of the neutron-absorbing isotopes U-234 and/or U-236, cost, and optimum tails assay for minimum fuel cost.

Enter a value into any one field of the Material Balance, change any parameters as required, and click the "Calculate" button below. HELP
"t" means metric tonne.

Material Balance
Uranium Supply: (= )
	Product	Waste
Conversion	t UF₆ (= t U) (nat)
Enrichment SWU	t UF₆ (= t U) (enriched)	t UF₆ (= t U) (depleted)
Fuel Fab.	t UO₂ (= t U)
Power Plant	GWh_e ( = GWa_e)	t spent fuel

Cost Summary

[Thousand US$]

Uranium Supply

Conversion

Enrichment

Fuel Fabrication

Total

HELP

Results

(... copy and paste ...)

ASTM compliance in enriched product:
U-234: µg/g_U-235
U-236: µg/g_U-235

Results
(... copy and paste ...) ASTM compliance in enriched product: U-234: µg/g_U-235 U-236: µg/g_U-235

Cost Parameters

Natural Uranium Depleted Uranium Recycled Uranium

Uranium supply
$ / lb U₃O₈ = $ / kg U $ / kg U $ / kg U

Conversion $ / kg U $ / kg U $ / kg U

Enrichment $ / SWU $ / SWU $ / SWU

Fuel Fabrication $ / kg U $ / kg U $ / kg U

Cost Parameters
	Natural Uranium	Depleted Uranium	Recycled Uranium
Uranium supply	$ / lb U₃O₈ = $ / kg U	$ / kg U	$ / kg U
Conversion	$ / kg U	$ / kg U	$ / kg U
Enrichment	$ / SWU	$ / SWU	$ / SWU
Fuel Fabrication	$ / kg U	$ / kg U	$ / kg U

Process Parameters

Uranium Supply
Supply source: (DU = depleted uranium · Unat = natural uranium · Urep = reprocessed uranium)

as UF₆
as U₃O₈

Isotopic composition of supply:

U-232:
U-233: U-234:
U-235: U-236:
U-238:
wt-%
at-%

(U-238 calculated upon entry for other isotopes)

Conversion Losses: %

Enrichment

Equiv. product assay: wt-% U-235

Tails assay:
Compute for minimum product cost
Use fixed assay: wt-% U-235

Cascade key weight: Reactivity penalty factor for U-234:
computed
fixed: excess wt-% U-235 / wt-% U-234
none

Reactivity penalty factor for U-236:
computed
fixed: excess wt-% U-235 / wt-% U-236
none

Fuel Fabrication Losses: %

Power Plant Fuel Burnup: GWd/t U · Efficiency: %

HELP

> See also:

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