(19)

(11)

EP 1 601 819 A2

(12)

(88) Date of publication A3: 03.02.2005 (43) Date of publication: 07.12.2005 Bulletin 2005/49 (21) Application number: 04716662.4 (22) Date of filing: 03.03.2004

(51) International Patent Classification (IPC)7: C25C 3/00 (86) International application number: PCT/GB2004/000911 (87) International publication number: WO 2004/078303 (16.09.2004 Gazette 2004/38)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 04.03.2003 GB 0304884 (71) Applicant: British Nuclear Fuels PLC Warrington,Cheshire WA3 6AS (GB)	(72) Inventors: HEBDITCH, David John,BNFL Environmental Services Berkeley,Gloucestershire GL13 9PB (GB) BANFIELD, Zara Warrington,Cheshire WA3 6AS (GB)