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Inventory differences at UK civil nuclear sites in 2012/13

Site Plutonium
kg 1
HEU
kg 235U 2
LEU
tU 3
Natural U
tU 3
Depleted U
tU 3
Dounreay
(Dounreay Site Restoration Ltd)
-0.620 +0.932 <+0.001 NIL -0.246
Harwell
(Research Sites Restoration Ltd)
+0.005 +0.005 NIL NIL NIL
Windscale
(Sellafield Ltd) 4
-0.002 NIL <+0.001 NIL <+0.001
Winfrith
(Research Sites Restoration Ltd)
<+0.001 <+0.001 NIL <+0.001 <-0.001
Sellafield
(Sellafield Ltd)
-5.545 -0.167 +0.042 <-0.001 -0.545
Springfields
(Springfields Fuels Ltd)
NIL NIL +8.148 +12.81 -0.654
Capenhurst
(URENCO UK Ltd)5
NIL NIL +0.003 <-0.001 -0.001
URENCO
Capenhurst 6
N/A N/A <------------- -0.187 ------------->

+ apparent increase
- apparent decrease

1 the figures for plutonium are the total amount of all plutonium isotopes.
2 the figures for highly enriched uranium (HEU) are for the uranium 235 content of uranium enriched to above 20% of that isotope.
3 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.
4 for which Sellafield Ltd became the site licensee on 1 April 2008
5 for which URENCO UK Ltd became the site licensee on 30 November 2012 (formerly Sellafield Ltd)
6 the figure for Urenco Capenhurst is a consolidated figure for Urenco UK Ltd and Enrichment Technology UK Ltd

Contacts

  • Dounreay Sites Restoration Ltd (Dounreay), Colin Punler 0776 416 4812
  • Research Sites Restoration Ltd (Harwell & Winfrith), Angela Vincent 01235 435234
  • Sellafield Ltd (Sellafield/Windscale), Karl Connor 019467 85842 
  • Springfields Fuels Ltd, Alan Beauchamp 01772 762841
  • Capenhurst site (including Capenhurst Nuclear Services Ltd (formerly Sellafield Ltd Capenhurst site)), Neil Fagan 0151 473 4240