GB1458239A - Decontamination agent for metallic surfaces and method of deconta mination by employing same - Google Patents

Decontamination agent for metallic surfaces and method of deconta mination by employing same

Info

Publication number
GB1458239A
GB1458239A GB2848574A GB2848574A GB1458239A GB 1458239 A GB1458239 A GB 1458239A GB 2848574 A GB2848574 A GB 2848574A GB 2848574 A GB2848574 A GB 2848574A GB 1458239 A GB1458239 A GB 1458239A
Authority
GB
United Kingdom
Prior art keywords
nitric acid
mixture
perfluorinated compound
deconta
mination
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
GB2848574A
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.)
Gesellschaft fuer Kernforschung mbH
Original Assignee
Gesellschaft fuer Kernforschung mbH
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 Gesellschaft fuer Kernforschung mbH filed Critical Gesellschaft fuer Kernforschung mbH
Publication of GB1458239A publication Critical patent/GB1458239A/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

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)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

1458239 Decontamination of radio-active surfaces KERNFORSCHUNG mbH Ges F³r 27 June 1974 [2 July 1973] 28485/74 Heading G6R An agent for cleaning radio-actively contaminated metal surfaces comprises a vaporous mixture of nitric acid, water vapour, and a perfluorinated aliphatic acid or a salt thereof; the nitric acid concentration is below that of the azeotropic mixture with water vapour, and the content of perfluorinated compound is such as to reduce the surface tension of the condensed mixture to about 25 dyne/cm. at 20‹ C. In examples the perfluorinated compound is ammonium perfluorocaprylate. Contaminated articles may be placed in a container and treated with the vaporous mixture produced by boiling a nitric acid solution containing the perfluorinated compound, the solution being either in the container or in a communicating vessel. A similar method may be used to decontaminate the inside surfaces of vessels or plant. Residues may be removed from the surfaces with steam or a jet of water.
GB2848574A 1973-07-02 1974-06-27 Decontamination agent for metallic surfaces and method of deconta mination by employing same Expired GB1458239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732333516 DE2333516C3 (en) 1973-07-02 1973-07-02 Decontaminants for metallic surfaces and methods of decontamination using the same

Publications (1)

Publication Number Publication Date
GB1458239A true GB1458239A (en) 1976-12-08

Family

ID=5885676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2848574A Expired GB1458239A (en) 1973-07-02 1974-06-27 Decontamination agent for metallic surfaces and method of deconta mination by employing same

Country Status (3)

Country Link
DE (1) DE2333516C3 (en)
FR (1) FR2236251B1 (en)
GB (1) GB1458239A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242449A1 (en) * 1986-01-30 1987-10-28 KOLEDA HOLDING S.A., société anonyme Process for decontaminating materials contaminated by radioactivity
GB2209240A (en) * 1987-08-26 1989-05-04 Vital Technologies Limited A method of decontaminating large vessels
EP1624466A1 (en) 2004-08-02 2006-02-08 S.T.M.I. Société des Techniques en Milieu Ionisant Process for decontamination of objects made from lead

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3143440A1 (en) * 1981-11-02 1983-05-19 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe METHOD FOR DECONTAMINATING RADIOACTIVELY CONTAMINATED SURFACES OF METAL MATERIALS
DE102008063941A1 (en) * 2008-12-19 2010-07-01 Forschungszentrum Jülich GmbH Method for reducing or at least partially removing specific radiotoxic agents from a nuclear installation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242449A1 (en) * 1986-01-30 1987-10-28 KOLEDA HOLDING S.A., société anonyme Process for decontaminating materials contaminated by radioactivity
GB2209240A (en) * 1987-08-26 1989-05-04 Vital Technologies Limited A method of decontaminating large vessels
EP1624466A1 (en) 2004-08-02 2006-02-08 S.T.M.I. Société des Techniques en Milieu Ionisant Process for decontamination of objects made from lead

Also Published As

Publication number Publication date
DE2333516B2 (en) 1978-09-07
FR2236251A1 (en) 1975-01-31
DE2333516A1 (en) 1975-01-23
FR2236251B1 (en) 1980-04-18
DE2333516C3 (en) 1979-05-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee