EP 0073366 B1 19860709 - PROCESS FOR DECONTAMINATING STEEL SURFACES AND DISPOSING OF NUCLEAR WASTES
Title (en)
PROCESS FOR DECONTAMINATING STEEL SURFACES AND DISPOSING OF NUCLEAR WASTES
Publication
Application
Priority
CH 561181 A 19810901
Abstract (en)
[origin: US4508641A] A solution is provided for decontaminating steel surfaces, especially in nuclear reactor cooler circuits. The solution contains formic acid and/or acetic acid and at least one reducing agent such as formaldehyde and/or acetaldehyde. The solution is effective to dissolve the iron oxide from the contaminated steel surface directly and/or reductively and to convert it to Fe-(II)-formate or acetate which are stabilized by the reducing conditions in the solution. For waste disposal the dissolved iron is precipitated from the used decontaminating solution, wherein the iron compounds that have been formed are the sole adsorbents for the radioactive materials contained in the decontaminating solution.
IPC 1-7
IPC 8 full level
G21F 9/00 (2006.01)
CPC (source: EP US)
G21F 9/004 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
EP 0073366 A2 19830309; EP 0073366 A3 19840328; EP 0073366 B1 19860709; EP 0073366 B2 19900711; CA 1197445 A 19851203; CH 653466 A5 19851231; DE 3271935 D1 19860814; US 4508641 A 19850402
DOCDB simple family (application)
EP 82107178 A 19820809; CA 410418 A 19820830; CH 561181 A 19810901; DE 3271935 T 19820809; US 41237582 A 19820827