Method of removing radionuclides from soil

Author: V.V. Strelko, D.I. Shvets, O.A. Glushachenko, N.M. Openko, L.M. Romanov, D.M. Grodzinsky, E.A. Konoplyastaya

Reference: Patent, 10.12.2002, Kiev patent holder: Institute of Sorption and Problems of Endoecology NAS (UA)

Keywords: soil, decontamination, plant

Abstract: The invention relates to environmental protection, in detail, to decontamination of soil affected by disaster at a nuclear power plant. The method includes growing of radiation-sorbable plants on soil, which has absorbed radionuclide materials, removal of the plants and their further utilization. The sort of plant utilized depends on the sort of the contaminating material. As sorbent material, is applied.

URL: http://www.findpatent.ru/patent/219/2194319.html

Method of decontaminating metal surfaces, using electric arc discharge, with closed water supply cycle

Author: A.P. Vasilyev, M.E. Netecha, B.P. Frolov, G.A. Khacheresov

Reference: Patent, 27.08.2001, Moscow patent holder: State Unitary Enterprise “Research and Development Institute of Power Engineering”

Keywords: metal, decontaminating, electric arc discharge

Abstract: The material1, with contaminated metal surface, is placed into a working receptacle, then a movable electrode2, of gap 0.05~1mm, is set. The material1 and electrode2 are connected to the terminals of a pulse generator　→　desalinated water is supplied into the gap, at a velocity not less than 0,1m/s → electric arc is ignited. High temperature, caused by the electric arc discharge, induces melting of the surface layer of the metal.

URL: http://www.findpatent.ru/patent/217/2172992.html

Method of cleaning solutions from radionuclides

Author: I.G. Toporov, V.N. Zabrodsky, N.I. Voronik, Yu.P. Davydov, V.V. Toropova, M.I. Tereshenko

Reference: Patent, 20.01.1998, Moscow patent holder: Institute of radioecological problems, Belorussia

Keywords: solution, deactivation, oxalic acid

Abstract: Deactivation of liquid materials by sorption. Liquid radioactive solution is treated with oxalic acid, up to its content in the contaminated solution 510-4 mol / l, nitric acid content is adjusted to 0.1 – 0.5 mol / l, wherein the solution is set to pH 1.0 -0 3.

URL: http://www.findpatent.ru/patent/210/2102803.html

Method for deactivating apparatus and parts contaminated by radionuclides

Author: A.S. Kozyrev, A.I. Timashov, E.M. Zelentsov, N.A. Mikhailova, V.Ya Elizarov

Reference: Patent, 10.04.2001, Tomsk patent holder: Siberian chemical combine

Keywords: plant, apparatus, decontamination

Abstract: Decontamination of surfaces of equipment contaminated by radionuclides. May be applied for decontamination of various operations of a radiochemical plant. Solutions of oxidizing and complexing agents are poured alternately onto the object, then it is heated and kept at the heated temperature. The method contains several cycles of treatment.

URL: http://www.findpatent.ru/patent/216/2165111.html

Method fro treating metallic materials containing radionuclide uranium and thorium

Author: A.V. Ermakov, V.A. Dmitriev, S.M. Pirogov, V.I. Bogdanov, N.I. Timofeyev, A.A. Kalinovsky, A.N. Konyaev, A.P. Suslov, V.I. Fetisov

Reference: Patent, 20.11.1998 patent holder: Limited Liability Partnership Innovation and Technology Center “Ella”

Keywords: schlich platinum, deactivation, uranium, thorium

Abstract: Usage: deactivation of radionuclide contamination from metallic materials; in detail, removal of uranium and thorium from schlich platinum. It consists of conducting oxidative calcination of contaminated schlich platinum, in air at 1473-1773 K, for 0,50-0,66 h, separating fused oxides of uranium and thorium, depleted radionuclides solid remains being melted in air in the presence of flux.

URL: http://www.findpatent.ru/patent/212/2122250.html

METHOD FOR REMOVING RADIOACTIVE CONTAMINATION FROM METAL SURFACES

Author: E.P. Emets, P.P. Poluetkov, V.P. Simonov, S.L. Khrabrov, A.B. Kabanov

Reference: Patent, 10.08.2003, Moscow patent holder: All-Russian research institute of inorganic materials named after A.A. Bochvar

Keywords: metal surface, decontamination

Abstract: The invention relates to nuclear technology, in details, to the removal of radionuclides firmly fixed onto surfaces of metals. The method comprises formation of and easily removable film, after application of the film-forming composition onto the metal surface. The composition consists of water-soluble film former, plasticizer, surfactant and mineral acid.

URL: http://www.findpatent.ru/patent/221/2210123.html

Inorganic spherogranulated composite sorbents based on zirconium hydroxide: method of its production

Author: L.M. Sharygin, V.E. Moiseyev, A.Yu. Muromsky, V.I. Barybin

Reference:  Patent, 10.06.1998, patent holder: L.M. Sharygin

Keywords: liquid, decontamination

Abstract: The invention relates to sorbents used for cleaning dynamically liquids from radionuclides. Summary: spherogranulated inorganic composite sorbent contains mixed hexacyanoferrate metal composition of

in which are MI – Li +, Na +, K +, NH +4 or a mixture thereof, MII – Mn2 +, Fe2 +, Co2 +, Ni2 +, Cu2 +, Zn2 +, Cd2 +, or mixtures thereof, x = 0 – 3.6, in an amount of 5 – 54 wt. % and water in an amount of 0 – 48 wt.%, determined by drying at 110oC.

URL: http://www.findpatent.ru/patent/211/2113024.html

Method of decontaminating radioactive metal waste

Author: G.A. Petrov, I.C. Suvorov, I.A. Sobolev, S.A. Dmitriev, E.M. Timofeev

Reference: Patent, 15.10.2002, Moscow patent holder: Moscow State Enterprise – Joint Environmental-Technological Research Center for the disposal of radioactive waste and the protection of the environment (SIA “Radon”)

Keywords: disposal, radioactive metal, waste

Abstract: The invention relates to environmental protection, in particular to the field of processing and utilization of radioactive metal waste.　

URL: http://www.findpatent.ru/patent/223/2231843.html

Cleaner for removing radioactive and toxic metals

Author: M.V. Rudomino, N.I. Krutikova, V.N. Klochkov, N.V. Goryachev, A.G. Vozhakin, V.V. Bubnov

Reference: Patent, 10.05.1998, Moscow patent holder: VET “Plus” – Enterprise organization “Foundation for social and labor rehabilitation of persons with disabilities”

Keywords: decontamination, fabric materials

Abstract: The invention is intended to decontaminate fabric materials including linen and special clothing. Cleaner comprises surfactant, sodium tripolyphosphate, sodium nitrilotrimetilfosfonat, electrolyte and water.

URL: http://www.findpatent.ru/patent/211/2110859.html

Method for processing sodium coolant of nuclear reactor

Author: V.I. Polyakov, Yu.E. Shtynda

Reference: Patent, 20.12.1998, Obninsk patent holder: Russian State Scientific Center – Research Institute of Atomic Reactors

Keywords: fast breeder reactor, coolant, cleaning

Abstract: The invention relates to nuclear power and can be used for the decommissioning of a fast breeder reactor. The invention reduces the amount of waste and makes the recycling of resource of exhaust sodium possible, while ensuring the safety of the process with a minimum of energy consumption and exposure on personnel.　 This result is achieved by the sodium coolant cleaning all hazardous radiation nuclides and inactivate impurities to levels lower than the control level, directly in the circuit of the reactor.

URL: http://www.findpatent.ru/patent/212/2123732.html