EP 0483053 B1 19950301 - Decontaminating agent and process for dissolving radioactively contaminated surfaces of metallic components.
Title (en)
Decontaminating agent and process for dissolving radioactively contaminated surfaces of metallic components.
Title (de)
Dekontaminationsmittel und Verfahren zur Lösung von radioaktiv kontaminierten Oberflächen von Komponenten aus Metall.
Title (fr)
Moyen de décontamination et procédé de dissolution des surfaces radioactivement contaminées de composants métalliques.
Publication
Application
Priority
CH 342990 A 19901026
Abstract (en)
[origin: EP0483053A1] A reagent consisting of an HBF4 acid with at least one oxidising agent, preferably hydrogen peroxide, H2O2, added has been found for efficiently decontaminating radioactively contaminated metal components. Ideally, this mixture consisted of a 5%-strength HBF4 acid with 0.5 % by volume of H2O2 added. Radioactively decontaminated lead plates, for example, were removed from this reagent, while the contaminated solution was used as electrolyte without further additions. The contaminated lead or lead oxide deposits at the anode or cathode and can be disposed of as nuclear waste, while the solution can be returned to the process. The process can be performed in exactly the same way using the same reagent if the metal is not lead but copper, nickel, steel, silver or mercury or their alloys. <IMAGE>
IPC 1-7
IPC 8 full level
G21F 9/28 (2006.01); C23G 1/10 (2006.01); G21F 9/00 (2006.01); G21F 9/30 (2006.01)
CPC (source: EP US)
C23G 1/10 (2013.01 - EP US); G21F 9/004 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB LI SE
DOCDB simple family (publication)
EP 0483053 A1 19920429; EP 0483053 B1 19950301; BG 95366 A 19931224; CA 2054234 A1 19920427; CA 2054236 A1 19920427; CH 682023 A5 19930630; CS 325391 A3 19920617; DE 59104768 D1 19950406; ES 2071278 T3 19950616; FI 914870 A0 19911016; FI 914870 A 19920427; HU 212234 B 19960429; HU 913363 D0 19920128; HU T69460 A 19950928; JP H04285898 A 19921009; RU 2029400 C1 19950220; US 5340505 A 19940823
DOCDB simple family (application)
EP 91810731 A 19910916; BG 9536691 A 19911025; CA 2054234 A 19911025; CA 2054236 A 19911025; CH 342990 A 19901026; CS 325391 A 19911025; DE 59104768 T 19910916; ES 91810731 T 19910916; FI 914870 A 19911016; HU 336391 A 19911025; JP 29854491 A 19911017; SU 5001980 A 19911025; US 74602791 A 19910816