EP 0555127 B1 19960424 - Process and device for decontaminating a used nuclear steam-generator
Title (en)
Process and device for decontaminating a used nuclear steam-generator
Title (de)
Verfahren und Einrichtung zur Dekontaminierung eines gebrauchten nuklearen Dampferzeugers
Title (fr)
Procédé et installation de décontamination d'un générateur de vapeur nucléaire usagé
Publication
Application
Priority
FR 9201171 A 19920203
Abstract (en)
[origin: EP0555127A1] The primary part comprises a bundle (18) of U-shaped tubes connected to a water box (22), the bundle (18) comprising healthy tubes with open ends and defective tubes with blocked ends. According to the process the bundle (18) is subdivided into a number of subassemblies (106), each comprising a substantially identical number of tubes. An acidic decontaminating solution containing cerium is circulated successively in each subassembly (106), simultaneously in all the healthy tubes of the subassembly. The ends of the decontaminated healthy tubes are then plugged, the plugs of the undecontaminated defective tubes are pierced and the decontaminating solution is circulated in the water box (22) and the defective tubes. The liquid effluents are neutralised, taken to dryness and confined in standard storage enclosures. <IMAGE>
IPC 1-7
IPC 8 full level
C23G 1/08 (2006.01); F22B 37/48 (2006.01); F28F 9/02 (2006.01); G21F 9/00 (2006.01)
CPC (source: EP)
C23G 1/085 (2013.01); F22B 37/483 (2013.01); F28F 9/02 (2013.01); G21F 9/004 (2013.01)
Designated contracting state (EPC)
BE CH DE LI SE
DOCDB simple family (publication)
EP 0555127 A1 19930811; EP 0555127 B1 19960424; BG 97390 A 19940324; CZ 11093 A3 19930811; DE 69302290 D1 19960530; DE 69302290 T2 19960919; FR 2687005 A1 19930806; FR 2687005 B1 19941021; HU 213081 B 19970228; HU 9300267 D0 19930628; HU T66988 A 19950130; SK 5693 A3 19930909
DOCDB simple family (application)
EP 93400219 A 19930128; BG 9739093 A 19930203; CZ 11093 A 19930129; DE 69302290 T 19930128; FR 9201171 A 19920203; HU 9300267 A 19930202; SK 5693 A 19930202