EP 2923360 A1 20150930 - PROCESS FOR DECONTAMINATION OF SURFACES OF PARTS OF THE COOLING CIRCUIT OF A NUCLEAR REACTOR
Title (en)
PROCESS FOR DECONTAMINATION OF SURFACES OF PARTS OF THE COOLING CIRCUIT OF A NUCLEAR REACTOR
Title (de)
VERFAHREN ZUR OBERFLÄCHEN-DEKONTAMINATION VON BAUTEILEN DES KÜHLMITTELKREISLAUFS EINES KERNREAKTORS
Title (fr)
PROCÉDÉ DE DÉCONTAMINATION DES COMPOSÉES DE CIRCUIT DE REFROIDISSEMENT D'UN RÉACTEUR NUCLÉAIR
Publication
Application
Priority
- DE 102013100933 A 20130130
- EP 2013076155 W 20131211
Abstract (en)
[origin: WO2014117894A1] The invention relates to a method for the chemical decontamination of a surface, having an oxide layer, of a metallic component part of the coolant system of a nuclear power plant, said method comprising at least one oxidation step, in which the oxide layer is treated with an aqueous solution containing an oxidant, and a subsequent decontamination step, in which the oxide layer is treated with an aqueous solution of a decontamination acid, which has the property of forming, with metal ions, in particular with nickel ions, a poorly soluble precipitate. Prior to implementing the decontamination step, metal ions which have dissolved during the oxidation step are removed from the aqueous solution with the aid of a cation exchanger.
IPC 8 full level
G21F 9/00 (2006.01); G21F 9/28 (2006.01); G21F 9/30 (2006.01)
CPC (source: CN EP US)
G21F 9/004 (2013.01 - CN EP US); G21F 9/28 (2013.01 - CN EP US); G21F 9/30 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2014117894A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102013100933 B3 20140327; AR 094610 A1 20150812; CN 104903969 A 20150909; CN 104903969 B 20171124; EP 2923360 A1 20150930; EP 2923360 B1 20160413; ES 2582377 T3 20160912; JP 2016504601 A 20160212; JP 6339104 B2 20180606; TW 201442040 A 20141101; TW I534833 B 20160521; US 2015364226 A1 20151217; WO 2014117894 A1 20140807
DOCDB simple family (application)
DE 102013100933 A 20130130; AR P140100267 A 20140129; CN 201380069696 A 20131211; EP 13815419 A 20131211; EP 2013076155 W 20131211; ES 13815419 T 20131211; JP 2015554071 A 20131211; TW 103100349 A 20140106; US 201314650543 A 20131211