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WISE Uranium Project - HELP


(last updated 22 Feb 2016)

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Mine and mill operating status

"property"/ no information
prospection/exploration ongoing
prospection/exploration halted
prospection/exploration finished
under construction/development
construction/development halted
construction/development completed
operating
operation halted (idle)
operation terminated (closed)
reclamation ongoing
reclamation partially completed
reclamation completed

 

Mine and mill type

  open pit mine
  underground mine
  in situ leaching
  heap leaching
  mill
  tailings recovery

 

Project status / Issues

Deposit
developing
operating
terminated
decommissioning
regulatory

 

Mining companies

trying to acquire, or owning, uranium claim, tenement, lease, property, prospect, etc.
owning uranium deposit(s)
planning to develop, or developing, uranium mine(s)
mining uranium   ·   big uranium miner (> 1000 t U/a)
uranium mining halted   ·   no longer mining uranium

The flags used on this site are taken from Mooney's MiniFlags (created by the Flags of the World group).

 


ACRONYMS


DOE
U.S. Department of Energy

DU
depleted uranium

ESA
Euratom Supply Agency

GDP
Gaseous Diffusion Plant

GW
gigawatt (unit of power), 1 GW = 109 W = 106 kW = 1 million kW

GWh
gigawatt-hour (unit of energy), 1 GWh = 109 Wh = 106 kWh = 1 million kWh

HEU
highly enriched uranium

HLW
High-Level Radioactive Waste

HWR
heavy water reactor

IAEA
International Atomic Energy Agency , Vienna

ISL
in-situ leaching

ISR
in-situ recovery

kg SWU
= SWU

LEU
Low Enriched Uranium

LLW
Low-Level Radioactive Waste

LWR
light water reactor

MOX
mixed oxide fuel

MW
megawatt (unit of power), 1 MW = 106 W = 1000 kW

NEA
OECD Nuclear Energy Agency , Paris

NPT
Nuclear Non-Proliferation Treaty

NRC
U.S. Nuclear Regulatory Commission

RAR
Reasonably Assured Resources

RepU
reprocessed uranium

SWU
Separative Work Unit

t
metric tonne = 1000 kg

t SWU
= 1000 SWU

t U
metric tonne uranium contained in some compound

TWh
terawatt-hour (unit of energy), 1 TWh = 1012 Wh = 109 kWh = 1 billion kWh

UF6
uranium hexafluoride

UO2
uranium dioxide

UOC
uranium ore concentrate

U3O8
triuranium octoxide

wt-%
weight-percent

 


GLOSSARY


assay
concentration of an isotope (U-235 subsumed, if not indicated otherwise) in uranium, usually given as weight-%

blendstock
uranium (LEU, natural uranium, or DU) used for downblending of HEU

conversion
conversion of uranium from one chemical form into another one (usually U3O8 to UF6, if not indicated otherwise)

depleted uranium (DU)
uranium (of any chemical form) with concentration of isotope U-235 lower than in natural uranium (< 0.711 weight-%)

downblending
mixing of HEU with blendstock uranium, to obtain LEU for nuclear fuel

enriched uranium
uranium (of any chemical form) with concentration of isotope U-235 higher than in natural uranium (> 0.711 weight-%)

enrichment
process of increasing the concentration of the fissile isotope U-235 in uranium, usually by physical processes, such as gas diffusion or gas centrifugation; produces a product stream of enriched uranium and a byproduct stream of depleted uranium (tails)

feed (enrichment)
uranium introduced into the enrichment cascade as UF6

Gaseous Diffusion Plant (GDP)
enrichment plant using the gaseous diffusion process

heavy water reactor (HWR)
runs on natural UO2 fuel

highly enriched uranium (HEU)
uranium with an U-235 assay of 20%, or higher (only used in nuclear weapons and in research reactors)

in-situ leaching (ISL)
also known as solution mining, recovery of uranium from a permeable underground ore body by chemical leaching (acidic or alkaline), without removal of the ore from the deposit

in-situ recovery (ISR)
in-situ leaching

light water reactor
such as Boiling Water Reactor (BWR) and Pressurized Water Reactor (PWR), requires enriched uranium with U-235 assay of 3-5% as fuel

low enriched uranium (LEU)
uranium with an U-235 assay > 0.711% and < 20% (as used in LWRs)

mixed oxide fuel (MOX)
LWR fuel, with some of the U-235 replaced by plutonium

natural uranium
uranium (of any chemical form) of natural isotopic composition, containing 0.711 weight-% (equal to 0.72 atom-%) U-235 (view radiation properties)

product (enrichment)
enriched (or re-enriched) UF6 produced in the enrichment process

re-enrichment
use of depleted uranium rather than natural uranium as feed for the enrichment process
(not to be mistaken for the recycling of uranium from spent fuel!)

reprocessed uranium (RepU)
uranium recovered from spent fuel, can be recycled into new fuel, contains unwanted isotope U-236 (a neutron absorber)

secondary tails
tails generated from re-enrichment of tails

Separative Work Unit (SWU)
measure for the enrichment process, also referred to as "kg SWU"

tailings
uranium mill tailings
(not to be mistaken for tails!)

tails (enrichment)
byproduct from enrichment of uranium: depleted uranium in the form of UF6
(not to be mistaken for uranium mill tailings!)

tails upgrading
equivalent to re-enrichment of tails

triuranium octoxide (U3O8)
chemical form of uranium extracted from ore

uranium dioxide (UO2)
chemical form of uranium used in fuel for LWRs (enriched UO2, view radiation properties), or HWRs (natural UO2, view radiation properties)

uranium hexafluoride (UF6)
chemical form of uranium required for enrichment, a crystalline solid at ambient temperature, vaporizes above 56.4░C (view radiation properties)

uranium mill tailings
the sand/slime-like waste arising from uranium extraction from ore, still containing 85% of the radioactivity initially present in the ore (view radiation properties)

uranium ore concentrate (UOC)
marketable end product of uranium extraction from ore, containing at least 90% U3O8; often referred to as "Yellow Cake", though not all chemical forms are of yellow color (view radiation properties)

yellow cake
uranium ore concentrate

 


UNIT CONVERSION

> see also Unit Converter!

Uranium Contents
1 lb U3O8 = 0.385 kg U
1 million lbs U3O8 = 385 tonnes U
1 kg U = 2.6 lb U3O8
1 tonne U = 2600 lbs U3O8
1 short ton U3O8 = 0.77 tonnes U1 tonne U = 1.3 short tons U3O8
1 tonne U3O8 = 0.848 tonnes U1 tonne U = 1.179 tonnes U3O8
1 tonne UF6 = 0.676 tonnes U1 tonne U = 1.479 tonnes UF6
1 tonne UO2 = 0.8815 tonnes U1 tonne U = 1.134 tonnes UO2

Mass
1 lb = 0.45359 kg1 kg = 2.2046 lb
1 short ton = 0.907185 metric tonnes1 metric tonne = 1.1023 short tons

Volume
1 US gallon = 3.7853 l
1000 US gallons = 3.7853 m3
1 l = 0.26418 US gallons
1 m3 = 264.18 US gallons
1 cubic foot = 0.02832 m31 m3 = 35.31 cubic feet
1 cubic yard = 0.7646 m31 m3 = 1.3079 cubic yards
1 acre foot = 1233.5 m31000 m3 = 0.8107 acre foot

Area
1 acre = 4046.8 m2 = 0.40468 ha1 ha = 10000 m2 = 2.471 acres
1 square mile = 2.59 km21 km2 = 0.3861 square miles

Radiation
1 pCi = 0.037 Bq
1 Ci = 3.7 x 10 10 Bq
1 Bq = 27.027 pCi
1 pCi/l = 37 Bq/m31 Bq/m3 = 0.027 pCi/l
1 rem = 0.01 Sv
1 mrem = 10 ÁSv
1 Sv = 100 rem
1 ÁSv = 0.1 mrem
1 rad = 0.01 Gy1 Gy = 100 rad

 

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