ES8700786A1 - Metodo para descontaminar superficies metalicas en un siste-ma de refrigeracion de reactor nuclear - Google Patents

Metodo para descontaminar superficies metalicas en un siste-ma de refrigeracion de reactor nuclear

Info

Publication number
ES8700786A1
ES8700786A1 ES543571A ES543571A ES8700786A1 ES 8700786 A1 ES8700786 A1 ES 8700786A1 ES 543571 A ES543571 A ES 543571A ES 543571 A ES543571 A ES 543571A ES 8700786 A1 ES8700786 A1 ES 8700786A1
Authority
ES
Spain
Prior art keywords
acid
ceric acid
ceric
metal surfaces
decontaminating
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
ES543571A
Other languages
English (en)
Other versions
ES543571A0 (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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES543571A0 publication Critical patent/ES543571A0/es
Publication of ES8700786A1 publication Critical patent/ES8700786A1/es
Expired 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
    • 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

Landscapes

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

Abstract

METODO DE DESCONTAMINACION DE SUPERFICIES METALICAS. COMPRENDE EL TRATAMIENTO DE LA SUPERFICIE METALICA CONTAMINADA CON UNA DISOLUCION ACUOSA, QUE CONTIENE DE 0,5 A 3% DE ACIDO TETRASULFATO CERICO, ACIDO HEXASULFAMATO CERICO, ACIDO HEXAPERCLORADO CERICO O DE SUS MEZCLAS Y DE 1 A 5% DEL MISMO ACIDO QUE FORMA EL COMPLEJO CERICO EMPLEADO, A UNA TEMPERATURA COMPRENDIDA ENTRE 70JC Y 200JC; SEGUIDO DEL TRATAMIENTO CON UNA DISOLUCION DE DESCONTAMINACION CONSTITUIDA POR UNA DISOLUCION DE DESCONTAMINACION CONSTITUIDA POR ACIDO ETILENDIAMINOTETRAACETICO O NITRILOTRIACETICO Y ACIDO CITRICO U OXALICO EN AGUA, A LA MISMA TEMPERATURA. TIENE APLICACIONES PARA DESCONTAMINAR DE SUSTANCIAS RADIACTIVAS LOS SISTEMAS DE REFRIGERACION DE CUALQUIER REACTOR NUCLEAR.
ES543571A 1984-05-29 1985-05-28 Metodo para descontaminar superficies metalicas en un siste-ma de refrigeracion de reactor nuclear Expired ES8700786A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61501884A 1984-05-29 1984-05-29

Publications (2)

Publication Number Publication Date
ES543571A0 ES543571A0 (es) 1986-10-16
ES8700786A1 true ES8700786A1 (es) 1986-10-16

Family

ID=24463671

Family Applications (1)

Application Number Title Priority Date Filing Date
ES543571A Expired ES8700786A1 (es) 1984-05-29 1985-05-28 Metodo para descontaminar superficies metalicas en un siste-ma de refrigeracion de reactor nuclear

Country Status (7)

Country Link
US (1) US4657596A (es)
EP (1) EP0164937A1 (es)
JP (1) JPS613095A (es)
KR (1) KR850008506A (es)
CA (1) CA1230806A (es)
ES (1) ES8700786A1 (es)
ZA (1) ZA853531B (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0664191B2 (ja) * 1986-05-07 1994-08-22 科学技術庁原子力局長 放射性クラッドを化学的に溶解するための汚染除去方法
US4747907A (en) * 1986-10-29 1988-05-31 International Business Machines Corporation Metal etching process with etch rate enhancement
SE465142B (sv) * 1988-08-11 1991-07-29 Studsvik Ab Foerfarande foer dekontaminering av korrosionsprodukter i kaernkraftsreaktorer
US4990301A (en) * 1989-01-25 1991-02-05 Continental Pet Technologies, Inc. Method and apparatus for injection molding of multilayer preforms
FR2666523A1 (fr) * 1990-09-12 1992-03-13 Framatome Sa Appareil de travail au laser, notamment pour la decontamination d'une conduite d'un reacteur nucleaire.
US5213623A (en) * 1991-04-05 1993-05-25 Burtner Gerald G Process for cleaning nitric acid absorption column coils
FR2687005B1 (fr) * 1992-02-03 1994-10-21 Framatome Sa Procede et installation de decontamination de la partie primaire d'un generateur de vapeur usage d'un reacteur nucleaire a eau ordinaire sous pression.
FR2706217A1 (fr) * 1993-06-08 1994-12-16 Framatome Sa Procédé de remise en état d'un échangeur de chaleur de centrale nucléaire, notamment d'un échangeur de chaleur de circuit auxiliaire de refroidissement d'un réacteur nucléaire à l'arrêt.
US5489735A (en) * 1994-01-24 1996-02-06 D'muhala; Thomas F. Decontamination composition for removing norms and method utilizing the same
US5814204A (en) * 1996-10-11 1998-09-29 Corpex Technologies, Inc. Electrolytic decontamination processes
BE1011754A3 (fr) * 1998-02-20 1999-12-07 En Nucleaire Etabilissement D Procede et installation de decontamination de surfaces metalliques.
DE102017107037B3 (de) * 2017-03-31 2018-02-22 Areva Gmbh Verfahren zur Rückgewinnung von Uran von mit Uranoxid kontaminierten Bauteilen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1047232A (es) * 1963-07-12
US3549419A (en) * 1965-10-19 1970-12-22 Du Pont Catalytic method for cleaning soiled oven surfaces
US3664870A (en) * 1969-10-29 1972-05-23 Nalco Chemical Co Removal and separation of metallic oxide scale
CH619807A5 (es) * 1976-04-07 1980-10-15 Foerderung Forschung Gmbh

Also Published As

Publication number Publication date
EP0164937A1 (en) 1985-12-18
KR850008506A (ko) 1985-12-18
JPH0310920B2 (es) 1991-02-14
US4657596A (en) 1987-04-14
ES543571A0 (es) 1986-10-16
ZA853531B (en) 1985-12-24
JPS613095A (ja) 1986-01-09
CA1230806A (en) 1987-12-29

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