EP 1192623 A1 20020403 - METHOD AND DEVICE FOR RADIOACTIVE DECONTAMINATION OF A STEEL WALL
Title (en)
METHOD AND DEVICE FOR RADIOACTIVE DECONTAMINATION OF A STEEL WALL
Title (de)
VERFAHREN UND ANLAGE ZUR RADIOAKTIVEN DEKONTAMINATION EINER STAHLWAND
Title (fr)
PROCEDE ET DISPOSITIF DE DECONTAMINATION RADIOACTIVE D'UNE PAROI EN ACIER
Publication
Application
Priority
- FR 0001078 W 20000425
- FR 9905257 A 19990426
Abstract (en)
[origin: FR2792763A1] A method for the radioactive decontamination of a steel wall comprises contacting the wall to be decontaminated with a pickling solution incorporating nitric acid and a first agent, such as cerium nitrate IV, for oxidizing the metallic constituents of the steel, at an adequate temperature, in a manner that the surface of the wall may be eroded by oxidation of the metallic constituents of the steel that it contains. The contact is realized by a direct, continuous introduction, into the pickling solution, of a second oxidizing agent in a manner to continuously oxidize, at least partially, the first oxidizing agent, such as ozone possibly mixed with oxygen or nitrogen, reduced by the oxidation of the metallic constituents of the steel. The steel wall may be a wall of an internal circuit of a plant for the retreatment of irradiated nuclear fuel, for example a wall of austenitic steel. An Independent claim is included for a device for the radioactive decontamination method.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G21F 9/004 (2013.01 - EP US)
Citation (search report)
See references of WO 0065606A1
Designated contracting state (EPC)
BE CH DE GB LI
DOCDB simple family (publication)
FR 2792763 A1 20001027; FR 2792763 B1 20040528; DE 60040737 D1 20081218; EP 1192623 A1 20020403; EP 1192623 B1 20081105; JP 2002543401 A 20021217; US 6702902 B1 20040309; WO 0065606 A1 20001102
DOCDB simple family (application)
FR 9905257 A 19990426; DE 60040737 T 20000425; EP 00922729 A 20000425; FR 0001078 W 20000425; JP 2000614461 A 20000425; US 95904101 A 20011016