FR2209179A2 - Nuclear reactor component cleaning - for decontamination of parts wetted during operation - Google Patents

Nuclear reactor component cleaning - for decontamination of parts wetted during operation

Info

Publication number
FR2209179A2
FR2209179A2 FR7342771A FR7342771A FR2209179A2 FR 2209179 A2 FR2209179 A2 FR 2209179A2 FR 7342771 A FR7342771 A FR 7342771A FR 7342771 A FR7342771 A FR 7342771A FR 2209179 A2 FR2209179 A2 FR 2209179A2
Authority
FR
France
Prior art keywords
decontamination
during operation
nuclear reactor
reactor component
component cleaning
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
FR7342771A
Other languages
French (fr)
Other versions
FR2209179B2 (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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE2259345A external-priority patent/DE2259345A1/en
Priority claimed from DE2259334A external-priority patent/DE2259334A1/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of FR2209179A2 publication Critical patent/FR2209179A2/en
Application granted granted Critical
Publication of FR2209179B2 publication Critical patent/FR2209179B2/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • 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
    • G21F9/005—Decontamination of the surface of objects by ablation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

Surfaces with induced radioactivity contamination produced by wetting with H2O/D2O, esp. of heat exchanger components, are sand blasted using B2O3 particles down to the passivation layer on the base metal. The mixt of cleansing particles and abraded radioactive particles is made into an aq. suspension and then separated by mechanical/magnetic/ion exchange methods of filtration, after which the extracted material is rendered harmless.
FR7342771A 1972-12-04 1973-11-30 Nuclear reactor component cleaning - for decontamination of parts wetted during operation Granted FR2209179A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2259345A DE2259345A1 (en) 1972-12-04 1972-12-04 METHODS FOR CLEANING NUCLEAR POWER PLANTS
DE2259334A DE2259334A1 (en) 1972-12-04 1972-12-04 METHOD FOR CLEANING WATER WATERED PARTS OF NUCLEAR POWER PLANTS DURING OPERATION

Publications (2)

Publication Number Publication Date
FR2209179A2 true FR2209179A2 (en) 1974-06-28
FR2209179B2 FR2209179B2 (en) 1976-11-19

Family

ID=25764179

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7342771A Granted FR2209179A2 (en) 1972-12-04 1973-11-30 Nuclear reactor component cleaning - for decontamination of parts wetted during operation

Country Status (1)

Country Link
FR (1) FR2209179A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158743A1 (en) * 1984-01-26 1985-10-23 Ernst Schmutz GmbH Process and device for cleaning parts of plants which are contaminated by radioactivity
FR2598020A1 (en) * 1986-04-23 1987-10-30 Framatome Sa Process and device for decontamination of small-sized particles of hard material circulating in an impact shot blasting plant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158743A1 (en) * 1984-01-26 1985-10-23 Ernst Schmutz GmbH Process and device for cleaning parts of plants which are contaminated by radioactivity
FR2598020A1 (en) * 1986-04-23 1987-10-30 Framatome Sa Process and device for decontamination of small-sized particles of hard material circulating in an impact shot blasting plant

Also Published As

Publication number Publication date
FR2209179B2 (en) 1976-11-19

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