(19)

(11)

EP 0 626 889 A1

(12)

(43) Date of publication: 07.12.1994 Bulletin 1994/49 (21) Application number: 93901854.0 (22) Date of filing: 12.01.1993

(51) International Patent Classification (IPC):  F24F 7/ 06( . ) B08B 15/ 02( . ) B01L 1/ 00( . ) (86) International application number: PCT/GB1993/000059 (87) International publication number: WO 1993/014889 (05.08.1993 Gazette 1993/19)

(84) Designated Contracting States: BE DE FR IT (30) Priority: 28.01.1992 GB 19920001780 (71) Applicant: UNITED KINGDOM ATOMIC ENERGY AUTHORITY Oxfordshire OX11 0RA (GB)	(72) Inventor: MCGUIGAN, John Andrew Kennedy Fearnhead, Warrington WA2 0AJ (GB) (74) Representative: Wood, Paul Austin, et al  United Kingdom Atomic Energy Authority, Patents Department 329, Harwell Didcot, Oxfordshire OX11 0RA Didcot, Oxfordshire OX11 0RA (GB)