Skip to content

Inventory differences at UK civil nuclear sites in 2014/15

Site Plutonium
kg 1
HEU
kg 235U 2
LEU
tU 3
Natural U
tU 3
Depleted U
tU 3
Dounreay
(Dounreay Site Restoration Ltd)
+0.027 +0.318 <+0.001 +0.005 -0.011
Harwell
(Research Sites Restoration Ltd)
+0.150 +0.017 NIL <+0.001 NIL
Windscale
(Sellafield Ltd) 4
+0.954 +0.001 -0.298 NIL <+0.001
Winfrith
(Research Sites Restoration Ltd)
<+0.001 +0.001 NIL NIL NIL
Sellafield
(Sellafield Ltd)
-1.735 -0.002 +0.814 +0.016 -4.683
Springfields
(Springfields Fuels Ltd)
NIL NIL -2.179 +22.222 +3.033
URENCO
Capenhurst 5
N/A N/A <------------------- +2.309---------------->

+ 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. the figure for Urenco Capenhurst is a consolidated figure for Urenco UK Ltd, Enrichment Technology UK Ltd and Capenhurst Nuclear Services

Site contacts

  • Dounreay Sites Restoration Ltd (Dounreay), Sue Thompson 01847 806085
  • Research Sites Restoration Ltd (Harwell & Winfrith), Angela Vincent 01235 435234
  • Sellafield Ltd (Sellafield Ltd), Matt Legg 019467 83566
  • Springfields Fuels Ltd, Alan Beauchamp 01772 762841
  • Capenhurst site (including Capenhurst Nuclear Services Ltd), Neil Fagan 0151 473 4240