(19)

(11)

EP 1 177 401 A1

(12)

(43) Date of publication: 06.02.2002 Bulletin 2002/06 (21) Application number: 98966747.2 (22) Date of filing: 21.12.1998

(51) International Patent Classification (IPC)7: F17C 7/04, F17C 9/02, F17C 9/04 (86) International application number: PCT/US9827/231 (87) International publication number: WO 0037/847 (29.06.2000 Gazette 2000/26)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Bechtel BWXT Idaho, LLC Idaho Falls, ID 83415-3899 (US)	(72) Inventors: BINGHAM, Dennis, N. Idaho Falls, ID 83402 (US) WILDING, Bruce, M. Idaho Falls, ID 83402 (US) O'BRIEN, James, E. Idaho Falls, ID 83404 (US) SIAHPUSH, Ali, S. Idaho Falls, ID 83402 (US) BROWN, Kevin, B. Idaho Falls, ID 83401 (US) (74) Representative: Browne, Robin Forsythe, Dr.  Urquhart-Dykes & Lord Tower House Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)