| Site | Plutonium kg 1 |
HEU kg 235U 2 |
LEU tU 3 |
Natural U tU 3 |
Depleted U tU 3 |
|---|---|---|---|---|---|
| Dounreay | +0.253 | -0.789 | +0.002 | -0.002 | +0.040 |
| Harwell | +0.008 | +0.009 | NIL | NIL | NIL |
| Winfrith | NIL | NIL | NIL | NIL | NIL |
| Sellafield(4) | +8.961 | -0.003 | -0.043 | <-0.001 | +2.183 |
| Springfields | NIL | NIL | +1.763 | +0.079 | +0.201 |
| URENCO Capenhurst (5) |
N/A | NIL | <------------- -1.274 ----------> | ||
+ apparent increase
- apparent decrease
- the figures for plutonium are the total amount of all plutonium isotopes.
- the figures for highly enriched uranium (HEU) are for the uranium235 content of uranium enriched to above 20% of that isotope.
- low enriched uranium (LEU), natural uranium and depleted uranium cannot be used to make explosive devices. The published figures include these grades for the sake of completeness.
- effective from 2017/18, includes Windscale ID figures.
- the figure for Urenco Capenhurst is a consolidated figure for Urenco UK Ltd, Urenco Nuclear Stewardship Ltd and URENCO ChemPlants Ltd