EP1141445B1 - Verfahren zur dekontamination einer oberfläche eines bauteiles - Google Patents

Verfahren zur dekontamination einer oberfläche eines bauteiles Download PDF

Info

Publication number
EP1141445B1
EP1141445B1 EP99960849A EP99960849A EP1141445B1 EP 1141445 B1 EP1141445 B1 EP 1141445B1 EP 99960849 A EP99960849 A EP 99960849A EP 99960849 A EP99960849 A EP 99960849A EP 1141445 B1 EP1141445 B1 EP 1141445B1
Authority
EP
European Patent Office
Prior art keywords
iron
ions
solution
divalent iron
oxalate
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 - Lifetime
Application number
EP99960849A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1141445A1 (de
Inventor
Horst-Otto Bertholdt
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.)
Areva GmbH
Original Assignee
Framatome ANP GmbH
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 Framatome ANP GmbH filed Critical Framatome ANP GmbH
Publication of EP1141445A1 publication Critical patent/EP1141445A1/de
Application granted granted Critical
Publication of EP1141445B1 publication Critical patent/EP1141445B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C23G1/08—Iron or steel
    • 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
    • C23G1/08—Iron or steel
    • C23G1/088—Iron or steel solutions containing organic acids
    • 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
    • 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
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/12—Processing by absorption; by adsorption; by ion-exchange

Definitions

  • the invention relates to a method for decontamination of a Surface of a component low or mild steel according to claim 1.
  • the invention is therefore based on the object of a method for decontamination of a surface of a component Specify steel, especially if the component is made low or unalloyed steel, the base metal attack keeps very small.
  • the object is achieved according to the invention in that the Solution containing oxalic acid, with which the surface of the Component is brought into contact, including ions of the divalent Contains iron, and thereby on just exposed Protect parts of the base metal surface immediately builds up iron 3-oxalate by exposure to UV light is converted into iron 2-oxalate and carbon dioxide that after completing the detachment of the contaminated Layer the protective layer by reducing the content Ions of divalent iron are detached in the solution and that no longer needed ions of the divalent Iron and the substance that causes the contamination has to be bound to an ion exchange resin.
  • divalent iron is obtained from trivalent iron by irradiating the solution containing ions of the trivalent iron with UV light. UV radiation to reduce iron can be found in EP 0 753 196 B1.
  • the method disclosed there does not serve for the decontamination of component surfaces but for the disposal of a decontamination solution containing oxalic acid.
  • iron III oxalate is converted into divalent iron oxalate by UV radiation and then converted back into the starting complex. The oxalic acid is broken down into CO 2 and water.
  • the ions of divalent iron can be the Solution also added from the outside. This is particularly suitable an iron-2 salt.
  • the iron 2 ions can be obtained from the contaminated layer or detached from the base metal become. There is only an insignificant removal of Base metal, since only relatively little iron 2 ions are needed become.
  • the contaminated layer can both ions of divalent iron and ions of trivalent Iron can be extracted.
  • the advantage of the invention is in particular that with decontamination on little or unalloyed steel almost no base metal attack occurs and yet only a little Chemicals are needed and that very little waste is left remains that has to be disposed of.
  • oxides become divalent and trivalent Iron, which is part of the contamination-bearing Layer are, and from oxalic acid iron 2-oxalate and iron 3-oxalate educated. Then ions of the divalent are in solution and trivalent iron.
  • iron 3-oxalate (iron 3-ions) is irradiated with UV light in iron 2-oxalate (iron 2 ions) and carbon dioxide converted.
  • iron 2-oxalate iron 2 ions
  • the iron 2-oxalate forms, as well as due to the Decontamination of a pure, oxide-free base metal surface is there, a protective layer. Even while on elsewhere decontamination is still running, i.e. iron oxides detached from the acid is already attached to the cleaned areas on the protective layer.
  • iron 2-oxalate iron 2 ions
  • cation exchange resin ion exchange resin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP99960849A 1998-11-10 1999-11-02 Verfahren zur dekontamination einer oberfläche eines bauteiles Expired - Lifetime EP1141445B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19851852 1998-11-10
DE19851852A DE19851852A1 (de) 1998-11-10 1998-11-10 Verfahren zur Dekontamination einer Oberfläche eines Bauteiles
PCT/DE1999/003489 WO2000028112A1 (de) 1998-11-10 1999-11-02 Verfahren zur dekontamination einer oberfläche eines bauteiles

Publications (2)

Publication Number Publication Date
EP1141445A1 EP1141445A1 (de) 2001-10-10
EP1141445B1 true EP1141445B1 (de) 2003-03-12

Family

ID=7887331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99960849A Expired - Lifetime EP1141445B1 (de) 1998-11-10 1999-11-02 Verfahren zur dekontamination einer oberfläche eines bauteiles

Country Status (11)

Country Link
US (1) US6444276B2 (ko)
EP (1) EP1141445B1 (ko)
JP (1) JP4421114B2 (ko)
KR (1) KR100637950B1 (ko)
AT (1) ATE234374T1 (ko)
CA (1) CA2350214C (ko)
DE (2) DE19851852A1 (ko)
ES (1) ES2192407T3 (ko)
MX (1) MXPA01004773A (ko)
TW (1) TW436815B (ko)
WO (1) WO2000028112A1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090003507A1 (en) * 2007-06-27 2009-01-01 Makoto Nagase Method and apparatus for suppressing corrosion of carbon steel, method for suppressing deposit of radionuclide onto carbon steel members composing a nuclear power plant, and film formation apparatus
US8115045B2 (en) * 2007-11-02 2012-02-14 Areva Np Inc. Nuclear waste removal system and method using wet oxidation
DE102009002681A1 (de) * 2009-02-18 2010-09-09 Areva Np Gmbh Verfahren zur Dekontamination radioaktiv kontaminierter Oberflächen
US8591663B2 (en) * 2009-11-25 2013-11-26 Areva Np Inc Corrosion product chemical dissolution process
KR101219526B1 (ko) 2010-09-20 2013-01-11 대한민국 다공질 문화재 표면의 금속오염물 제거용 습포제 및 이를 이용한 다공질 문화재 표면의 금속오염물 제거 방법
KR102055752B1 (ko) 2019-06-24 2019-12-17 대한민국 토벽화 보존처리용 고착제 제거용 습포팩, 이의 제조방법, 및 이를 이용한 제거방법
JP7411502B2 (ja) * 2020-05-20 2024-01-11 日立Ｇｅニュークリア・エナジー株式会社 原子力プラントの炭素鋼部材の化学除染方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2613351C3 (de) * 1976-03-29 1982-03-25 Kraftwerk Union AG, 4330 Mülheim Verfahren zur chemischen Dekontamination von metallischen Bauteilen von Kernreaktoranlagen
CH653466A5 (de) * 1981-09-01 1985-12-31 Industrieorientierte Forsch Verfahren zur dekontamination von stahloberflaechen und entsorgung der radioaktiven stoffe.
DE3413868A1 (de) * 1984-04-12 1985-10-17 Kraftwerk Union AG, 4330 Mülheim Verfahren zur chemischen dekontamination von metallischen bauteilen von kernreaktoranlagen
JPH0765204B2 (ja) * 1985-12-24 1995-07-12 住友化学工業株式会社 鉄酸化物の溶解除去法
EP0278256A1 (de) * 1987-01-28 1988-08-17 Siemens Aktiengesellschaft Verfahren und Einrichtung zum Entfernen von Oxidschichten
US4828743A (en) * 1987-11-20 1989-05-09 Boyle-Midway Household Products, Inc. Composition for rust removal and method of use thereof
EP0355628B1 (de) * 1988-08-24 1993-11-10 Siemens Aktiengesellschaft Verfahren zur chemischen Dekontamination der Oberfläche eines metallischen Bauteils einer Kernreaktoranlage
US5024805A (en) * 1989-08-09 1991-06-18 Westinghouse Electric Corp. Method for decontaminating a pressurized water nuclear reactor system
DE4117625C2 (de) * 1991-05-29 1997-09-04 Siemens Ag Reinigungsverfahren
DE4126971A1 (de) * 1991-08-14 1993-02-18 Siemens Ag Verfahren und einrichtung zur entsorgung einer organischen substanz
JP3287074B2 (ja) * 1993-09-03 2002-05-27 栗田工業株式会社 酸化鉄スケールの溶解除去方法
DE4410747A1 (de) * 1994-03-28 1995-10-05 Siemens Ag Verfahren und Einrichtung zum Entsorgen einer Lösung, die eine organische Säure enthält
US5958247A (en) * 1994-03-28 1999-09-28 Siemens Aktiengesellschaft Method for disposing of a solution containing an organic acid
GB9422539D0 (en) * 1994-11-04 1995-01-04 British Nuclear Fuels Plc Decontamination processes

Also Published As

Publication number Publication date
ES2192407T3 (es) 2003-10-01
TW436815B (en) 2001-05-28
WO2000028112A1 (de) 2000-05-18
JP4421114B2 (ja) 2010-02-24
JP2002529719A (ja) 2002-09-10
KR100637950B1 (ko) 2006-10-23
DE19851852A1 (de) 2000-05-11
ATE234374T1 (de) 2003-03-15
KR20010080408A (ko) 2001-08-22
DE59904578D1 (de) 2003-04-17
EP1141445A1 (de) 2001-10-10
CA2350214A1 (en) 2000-05-18
CA2350214C (en) 2007-05-01
US20010031320A1 (en) 2001-10-18
MXPA01004773A (es) 2002-05-06
US6444276B2 (en) 2002-09-03

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