FR2380624A1 - Radioactive decontamination by applying gel contg. decontaminant - then rinsing off or removing when dry - Google Patents

Radioactive decontamination by applying gel contg. decontaminant - then rinsing off or removing when dry

Info

Publication number
FR2380624A1
FR2380624A1 FR7703618A FR7703618A FR2380624A1 FR 2380624 A1 FR2380624 A1 FR 2380624A1 FR 7703618 A FR7703618 A FR 7703618A FR 7703618 A FR7703618 A FR 7703618A FR 2380624 A1 FR2380624 A1 FR 2380624A1
Authority
FR
France
Prior art keywords
gel
decontaminant
obtd
dry
decontamination
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.)
Granted
Application number
FR7703618A
Other languages
French (fr)
Other versions
FR2380624B1 (en
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7703618A priority Critical patent/FR2380624A1/en
Publication of FR2380624A1 publication Critical patent/FR2380624A1/en
Application granted granted Critical
Publication of FR2380624B1 publication Critical patent/FR2380624B1/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Detergent Compositions (AREA)

Abstract

Radioactive decontamination of part is effected by applying a decontaminating gel to its surface, them removing it. The gel pref. has a viscosity of >=350 cP. It can be a glycerophthalic gel contg. a soln. of decontaminant, obtd. by reacting a 1:4 or 1:1 molar mixt. of phthalic anhydride and glycerol. Alternatively, it can be a glycerophosphoric gel, obtd. by reaction of an equimolar mixt. of glycerol and phosphoric acid; a cellulosic gel, e.g. obtd. by reaction of cellulose acetate, ethylene glycol, and acetic acid; a PVA gel; a silica gel, e.g. a silico-ethyl acetate gel; or an alumina gel. It can be applied by spray gun, and rinsed off with water, or allowed to dry and removed mechanically. The method overcomes the disadvantages of mechanical methods (which involve surface modification, and are difficult to apply to parts of complicated shape) and chemical methods (which lead to the production of large vols. of effluent and are difficult to apply to large parts). Low quantities of decontaminant are required, and the viscosity of the gel allows contact for the needed time for decontamination.
FR7703618A 1977-02-09 1977-02-09 Radioactive decontamination by applying gel contg. decontaminant - then rinsing off or removing when dry Granted FR2380624A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7703618A FR2380624A1 (en) 1977-02-09 1977-02-09 Radioactive decontamination by applying gel contg. decontaminant - then rinsing off or removing when dry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7703618A FR2380624A1 (en) 1977-02-09 1977-02-09 Radioactive decontamination by applying gel contg. decontaminant - then rinsing off or removing when dry

Publications (2)

Publication Number Publication Date
FR2380624A1 true FR2380624A1 (en) 1978-09-08
FR2380624B1 FR2380624B1 (en) 1980-03-07

Family

ID=9186513

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703618A Granted FR2380624A1 (en) 1977-02-09 1977-02-09 Radioactive decontamination by applying gel contg. decontaminant - then rinsing off or removing when dry

Country Status (1)

Country Link
FR (1) FR2380624A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047857A2 (en) * 1980-09-13 1982-03-24 Nukem GmbH Process for decontaminating radioactively polluted surfaces
FR2518904A1 (en) * 1981-12-24 1983-07-01 Commissariat Energie Atomique METHOD FOR REMOTELY DEPOSITING A PRODUCT ON A SURFACE AND ITS APPLICATION TO THE FIXING OF TOXIC DUST ON THE WALLS OF A CONTAMINATED CAVITY
FR2522869A1 (en) * 1982-03-02 1983-09-09 Peintures Vernis Ste Lorraine METHOD FOR RADIOACTIVE DECONTAMINATION OF SURFACES
FR2656949A1 (en) * 1990-01-09 1991-07-12 Commissariat Energie Atomique Decontaminating gel and its use for the radioactive decontamination of surfaces
EP0674323A1 (en) * 1994-03-22 1995-09-27 Commissariat A L'energie Atomique Gel for radioactive decontaminating and protecting of surfaces
WO1997035323A1 (en) * 1996-03-21 1997-09-25 Stmi - Societe Des Techniques En Milieu Ionisant Organomineral decontamination gel and use thereof for surface decontamination
FR2798603A1 (en) * 1999-09-20 2001-03-23 Tech En Milieu Ionisant Stmi S ORGANIC DECONTAMINATION GEL AND ITS USE FOR DECONTAMINATION OF SURFACES
FR2827530A1 (en) * 2001-07-17 2003-01-24 Commissariat Energie Atomique Surface treatment gel, especially for decontaminating ventilation shafts in nuclear plants, comprises a colloidal solution containing an inorganic viscosifier and a treatment agent

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047857A2 (en) * 1980-09-13 1982-03-24 Nukem GmbH Process for decontaminating radioactively polluted surfaces
EP0047857A3 (en) * 1980-09-13 1982-06-23 Nukem GmbH Process for decontaminating radioactively polluted surfaces
FR2518904A1 (en) * 1981-12-24 1983-07-01 Commissariat Energie Atomique METHOD FOR REMOTELY DEPOSITING A PRODUCT ON A SURFACE AND ITS APPLICATION TO THE FIXING OF TOXIC DUST ON THE WALLS OF A CONTAMINATED CAVITY
EP0083525A1 (en) * 1981-12-24 1983-07-13 Commissariat à l'Energie Atomique Method of decontaminating a closed cavity containing toxic dust
FR2522869A1 (en) * 1982-03-02 1983-09-09 Peintures Vernis Ste Lorraine METHOD FOR RADIOACTIVE DECONTAMINATION OF SURFACES
FR2656949A1 (en) * 1990-01-09 1991-07-12 Commissariat Energie Atomique Decontaminating gel and its use for the radioactive decontamination of surfaces
EP0674323A1 (en) * 1994-03-22 1995-09-27 Commissariat A L'energie Atomique Gel for radioactive decontaminating and protecting of surfaces
FR2717709A1 (en) * 1994-03-22 1995-09-29 Commissariat Energie Atomique Gel capable of retaining radioactive contamination and its use for protecting or decontaminating a surface.
WO1997035323A1 (en) * 1996-03-21 1997-09-25 Stmi - Societe Des Techniques En Milieu Ionisant Organomineral decontamination gel and use thereof for surface decontamination
FR2746328A1 (en) * 1996-03-21 1997-09-26 Stmi Soc Tech Milieu Ionisant ORGANOMINERAL DECONTAMINATION GEL AND ITS USE FOR THE DECONTAMINATION OF SURFACES
FR2798603A1 (en) * 1999-09-20 2001-03-23 Tech En Milieu Ionisant Stmi S ORGANIC DECONTAMINATION GEL AND ITS USE FOR DECONTAMINATION OF SURFACES
WO2001022431A1 (en) * 1999-09-20 2001-03-29 S.T.M.I. Société des Techniques en Milieu Ionisant Decontaminating organic gel and use thereof for decontaminating surfaces
US6689226B1 (en) 1999-09-20 2004-02-10 S.T.M.I. Société des Techniques en Milieu Ionisant Decontaminating organic gel and use thereof for decontaminating surfaces
FR2827530A1 (en) * 2001-07-17 2003-01-24 Commissariat Energie Atomique Surface treatment gel, especially for decontaminating ventilation shafts in nuclear plants, comprises a colloidal solution containing an inorganic viscosifier and a treatment agent
WO2003008529A1 (en) * 2001-07-17 2003-01-30 Commissariat A L'energie Atomique Method for treating a surface with a treating gel and treating gel
US7713357B2 (en) 2001-07-17 2010-05-11 Commissariat A L'energie Atomique Method for treating a surface with a treatment gel and treatment gel
US7718010B2 (en) 2001-07-17 2010-05-18 Commissariat A L'energie Atomique Method for treating a surface with a treatment gel, and treatment gel

Also Published As

Publication number Publication date
FR2380624B1 (en) 1980-03-07

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