ES339132A1 - Method and composition for decontamination of stainless steel surfaces - Google Patents

Method and composition for decontamination of stainless steel surfaces

Info

Publication number
ES339132A1
ES339132A1 ES339132A ES339132A ES339132A1 ES 339132 A1 ES339132 A1 ES 339132A1 ES 339132 A ES339132 A ES 339132A ES 339132 A ES339132 A ES 339132A ES 339132 A1 ES339132 A1 ES 339132A1
Authority
ES
Spain
Prior art keywords
stainless steel
decontamination
composition
oxalic acid
steel surfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES339132A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Atomic Energy Commission (AEC)
Original Assignee
US Atomic Energy Commission (AEC)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Atomic Energy Commission (AEC) filed Critical US Atomic Energy Commission (AEC)
Publication of ES339132A1 publication Critical patent/ES339132A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
    • G21F9/002—Decontamination of the surface of objects with chemical or electrochemical processes
    • G21F9/004—Decontamination of the surface of objects with chemical or electrochemical processes of metallic surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Radio active contamination is removed from metal parts, e.g. brass, bronze, carbon steel or stainless steel cooling systems of nuclear reactors, with an aqueous solution of Cg. 1 1., oxalic acid 20 to 30, dibasic ammonium citrate 40 to 60, ferric sulphate or nitrate 1.7 to 2.4, diethyl thiourea 0.8 to 1.2 where the ratio of oxalic acid to dibasic ammonium citrate is not greater than 1: 2. The metal may be first treated with a hot aqueous, alkaline potassium permanganate solution.
ES339132A 1966-04-28 1967-04-11 Method and composition for decontamination of stainless steel surfaces Expired ES339132A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54648966A 1966-04-28 1966-04-28

Publications (1)

Publication Number Publication Date
ES339132A1 true ES339132A1 (en) 1968-12-01

Family

ID=24180661

Family Applications (1)

Application Number Title Priority Date Filing Date
ES339132A Expired ES339132A1 (en) 1966-04-28 1967-04-11 Method and composition for decontamination of stainless steel surfaces

Country Status (9)

Country Link
US (1) US3496017A (en)
BE (1) BE696994A (en)
CH (1) CH468697A (en)
DE (1) DE1621670A1 (en)
ES (1) ES339132A1 (en)
GB (1) GB1130068A (en)
IL (1) IL27663A (en)
NO (1) NO122687B (en)
SE (1) SE321130B (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664870A (en) * 1969-10-29 1972-05-23 Nalco Chemical Co Removal and separation of metallic oxide scale
US3873362A (en) * 1973-05-29 1975-03-25 Halliburton Co Process for cleaning radioactively contaminated metal surfaces
US4063962A (en) * 1976-04-07 1977-12-20 General Atomic Company Method and apparatus for cleaning nuclear fuel elements
CA1064626A (en) * 1977-06-09 1979-10-16 Majesty (Her) In Right Of Canada As Represented By Atomic Energy Of Cana Da Limited Deposit suppression in the core of water-cooled nuclear reactors
US4460479A (en) * 1978-09-14 1984-07-17 Mulder Gerard W Method for polishing, deburring and descaling stainless steel
US4226640A (en) * 1978-10-26 1980-10-07 Kraftwerk Union Aktiengesellschaft Method for the chemical decontamination of nuclear reactor components
US4217192A (en) * 1979-06-11 1980-08-12 The United States Of America As Represented By The United States Department Of Energy Decontamination of metals using chemical etching
US4470920A (en) * 1981-05-11 1984-09-11 Custom Research And Development Metal oxide remover for stainless steels
EP0071336B1 (en) * 1981-06-17 1986-03-26 Central Electricity Generating Board Process for the chemical dissolution of oxide deposits
US4476047A (en) * 1982-03-22 1984-10-09 London Nuclear Limited Process for treatment of oxide films prior to chemical cleaning
US4452643A (en) * 1983-01-12 1984-06-05 Halliburton Company Method of removing copper and copper oxide from a ferrous metal surface
US4587043A (en) * 1983-06-07 1986-05-06 Westinghouse Electric Corp. Decontamination of metal surfaces in nuclear power reactors
US4668303A (en) * 1983-08-04 1987-05-26 Exxon Research And Engineering Company Method of preventing stress corrosion in a bellows expansion joint
DE3413868A1 (en) * 1984-04-12 1985-10-17 Kraftwerk Union AG, 4330 Mülheim METHOD FOR CHEMICAL DECONTAMINATION OF METAL COMPONENTS OF CORE REACTOR PLANTS
US4654170A (en) * 1984-06-05 1987-03-31 Westinghouse Electric Corp. Hypohalite oxidation in decontaminating nuclear reactors
BE904139A (en) * 1986-01-30 1986-05-15 Lemmens Godfried PROCESS FOR THE DECONTAMINATION OF RADIOACTIVALLY CONTAMINATED MATERIALS.
GB8613522D0 (en) * 1986-06-04 1986-07-09 British Nuclear Fuels Plc Technetium decontamination
GB2220005A (en) * 1988-06-28 1989-12-28 Borsodi Vegyi Komb Process for removing oxide layer and scale from metals and metal alloys
US5205999A (en) * 1991-09-18 1993-04-27 British Nuclear Fuels Plc Actinide dissolution
US5257296A (en) * 1991-10-25 1993-10-26 Buford Iii Albert C Steam generator chemical solvent mixing system and method
FR2699936B1 (en) * 1992-12-24 1995-01-27 Electricite De France Process for dissolving oxides deposited on a metal substrate.
US5468303A (en) * 1994-02-25 1995-11-21 Zt Corporation Rust, corrosion, and scale remover
US5640703A (en) * 1994-04-18 1997-06-17 British Nuclear Fuels Plc Treatment of solid wastes
US5591270A (en) * 1995-07-31 1997-01-07 Corpex Technologies, Inc. Lead oxide removal method
US5678232A (en) * 1995-07-31 1997-10-14 Corpex Technologies, Inc. Lead decontamination method
US5814204A (en) * 1996-10-11 1998-09-29 Corpex Technologies, Inc. Electrolytic decontamination processes
CN100577893C (en) * 2005-12-23 2010-01-06 中国辐射防护研究院 Electrolytic decontaminating method for removing radioactive contaminant from metal surface
US20100072059A1 (en) * 2008-09-25 2010-03-25 Peters Michael J Electrolytic System and Method for Enhanced Radiological, Nuclear, and Industrial Decontamination
TWI496894B (en) * 2009-04-30 2015-08-21 World Resources Co Process for recovering metals and metal compounds from mined ore and other metal-bearing raw source materials

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB763547A (en) * 1953-11-10 1956-12-12 Atomic Energy Authority Uk Improvements in or relating to detergent compositions effective in removing radioactive contamination
US2793190A (en) * 1954-04-15 1957-05-21 Du Pont Corrosion-inhibition of oxalic acid
US2959555A (en) * 1956-09-28 1960-11-08 Dow Chemical Co Copper and iron containing scale removal from ferrous metal
US3013909A (en) * 1960-03-31 1961-12-19 Guyon P Pancer Method of chemical decontamination of stainless steel nuclear facilities

Also Published As

Publication number Publication date
NO122687B (en) 1971-07-26
DE1621670A1 (en) 1971-06-24
BE696994A (en) 1967-09-18
US3496017A (en) 1970-02-17
IL27663A (en) 1970-10-30
SE321130B (en) 1970-02-23
CH468697A (en) 1969-02-15
GB1130068A (en) 1968-10-09

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