EP 1624466 A1 20060208 - Process for decontamination of objects made from lead
Title (en)
Process for decontamination of objects made from lead
Title (de)
Verfahren zum Dekontaminieren von Bleigegenständen
Title (fr)
Procédé de décontamination d'objets en plomb
Publication
Application
Priority
FR 0451756 A 20040802
Abstract (en)
The procedure consists of placing the lead or lead alloy objects, such as nuclear reactor screen blocks, in contact with an alkaline aqueous solution, rinsing with water or an aqueous rinsing solution, followed by contact with an acid aqueous solution and rinsing again. The alkaline solution is of soda or potassium, preferably in a 30 per cent concentration and at a temperature of 60 degrees C, in which the objects are immersed for 10 to 80 minutes as it is agitated. The acid solution is of nitric or acetic acid of similar concentration, at ambient temperature, in which the objects are immersed for preferably 30 minutes. The final rinsing stage is followed by drying.
IPC 8 full level
G21F 9/28 (2006.01); C23G 1/02 (2006.01); C23G 1/14 (2006.01); G21F 9/30 (2006.01)
CPC (source: EP)
C23G 1/00 (2013.01); G21F 9/002 (2013.01); G21F 9/28 (2013.01); G21F 9/30 (2013.01)
Citation (applicant)
- GB 2284702 A 19950614 - BRITISH NUCLEAR FUELS PLC [GB]
- US 5591270 A 19970107 - D MUHALA THOMAS F [US]
- US 5678232 A 19971014 - D MUHALA THOMAS FRANCIS [US]
- US 5340505 A 19940823 - HANULIK JOZEF [CH], et al
- GB 1229395 A 19710421
- EP 0247933 A1 19871202 - COMMISSARIAT ENERGIE ATOMIQUE [FR]
- GB 1458239 A 19761208 - KERNFORSCHUNG GMBH GES FUER
- US 5093072 A 19920303 - GUY BRUNEL [FR], et al
Citation (search report)
- [X] US 5093072 A 19920303 - GUY BRUNEL [FR], et al
- [AD] US 5340505 A 19940823 - HANULIK JOZEF [CH], et al
- [AD] US 3669758 A 19720613 - KONECNY CHARLES R
- [AD] US 5678232 A 19971014 - D MUHALA THOMAS FRANCIS [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1624466 A1 20060208; EP 1624466 B1 20080423; AT E393454 T1 20080515; DE 602005006200 D1 20080605; DE 602005006200 T2 20090709; FR 2873848 A1 20060203; FR 2873848 B1 20061117
DOCDB simple family (application)
EP 05107043 A 20050729; AT 05107043 T 20050729; DE 602005006200 T 20050729; FR 0451756 A 20040802