FR2411469A1 - Fabricating tube-guide for nuclear reactor - using cage for assembling and welding components, eliminating distortion causing friction between rods and guiding surfaces - Google Patents

Fabricating tube-guide for nuclear reactor - using cage for assembling and welding components, eliminating distortion causing friction between rods and guiding surfaces

Info

Publication number
FR2411469A1
FR2411469A1 FR7737262A FR7737262A FR2411469A1 FR 2411469 A1 FR2411469 A1 FR 2411469A1 FR 7737262 A FR7737262 A FR 7737262A FR 7737262 A FR7737262 A FR 7737262A FR 2411469 A1 FR2411469 A1 FR 2411469A1
Authority
FR
France
Prior art keywords
guide
plates
tube
cage
envelope
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
FR7737262A
Other languages
French (fr)
Other versions
FR2411469B1 (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.)
Leleu SA Marcel
Original Assignee
Leleu SA Marcel
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 Leleu SA Marcel filed Critical Leleu SA Marcel
Priority to FR7737262A priority Critical patent/FR2411469A1/en
Publication of FR2411469A1 publication Critical patent/FR2411469A1/en
Application granted granted Critical
Publication of FR2411469B1 publication Critical patent/FR2411469B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
    • G21C21/18—Manufacture of control elements covered by group G21C7/00
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/10—Construction of control elements
    • 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

Process for making a tube-guide for a nuclear reactor, to guide a cluster of control rods carrying neutron-absorbing pencils which are lowered into the reactor to slow down the nuclear reaction, ensures that the control cluster can descend in the tube-guide and be lifted without friction and without undergoing blockage. The tube-guide comprises a lower part consisting of a sub-assembly of sleeves held together by positioning plates and an upper part consisting of guide-plates which define with the sleeves paths of descent for the neutron-absorbing pencils carried by a head. The upper and lower parts of the tube-guide are retained inside an envelope formed of two halves bent longitudinally at 90 degrees and joined. The envelope has holes on its periphery, at the site of each plate, arranged to receive with play points provided on the periphery of the plates. Process consists of placing the halves of the envelope enclosing the previously assembled and welded sub-assembly and the guide-plates in a cage formed of two half-shells and having ribs placed opposite the plates to support them. Expansile mandrels are introduced into the plates to press their four sides against the corresp. periphery of the ribs in the cage. The plates are then welded to the envelope by establishing a weld point between each point of the plate and its corresp. hole according to a programme to avoid tension effects in the tube-guide. The four-metre long tube guide can be assembled and welded so that all friction between the pencils and the guidage surface is eliminated.
FR7737262A 1977-12-09 1977-12-09 Fabricating tube-guide for nuclear reactor - using cage for assembling and welding components, eliminating distortion causing friction between rods and guiding surfaces Granted FR2411469A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7737262A FR2411469A1 (en) 1977-12-09 1977-12-09 Fabricating tube-guide for nuclear reactor - using cage for assembling and welding components, eliminating distortion causing friction between rods and guiding surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7737262A FR2411469A1 (en) 1977-12-09 1977-12-09 Fabricating tube-guide for nuclear reactor - using cage for assembling and welding components, eliminating distortion causing friction between rods and guiding surfaces

Publications (2)

Publication Number Publication Date
FR2411469A1 true FR2411469A1 (en) 1979-07-06
FR2411469B1 FR2411469B1 (en) 1983-06-03

Family

ID=9198696

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737262A Granted FR2411469A1 (en) 1977-12-09 1977-12-09 Fabricating tube-guide for nuclear reactor - using cage for assembling and welding components, eliminating distortion causing friction between rods and guiding surfaces

Country Status (1)

Country Link
FR (1) FR2411469A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533353A1 (en) * 1982-09-16 1984-03-23 Fragema Framatome & Cogema DEVICE AND METHOD FOR WELDING ELEMENTS OF A NUCLEAR FUEL ASSEMBLY STRUCTURE
EP0140283A1 (en) * 1983-10-28 1985-05-08 REAKTOR-BRENNELEMENT UNION GmbH Method of assembling a nuclear reactor fuel assembly
US4562038A (en) * 1981-11-13 1985-12-31 Framatome & Cie Device for guiding a control cluster in a nuclear reactor
US4606881A (en) * 1981-12-04 1986-08-19 Framatome & Cie Upper internal equipment of a pressurized water nuclear reactor
EP0222373A1 (en) * 1985-11-14 1987-05-20 Westinghouse Electric Corporation Top end support for water displacement rod guides of pressurized water nuclear reactor
US5006305A (en) * 1983-06-03 1991-04-09 Framatome & Cie. Device for guiding the control clusters of nuclear reactors
WO1995010113A1 (en) * 1993-10-04 1995-04-13 Electricite De France Device for removing heating rods from a pressurizer in a nuclear power plant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1013000A (en) * 1963-12-05 1965-12-15 Combustion Eng Arrangement of a fuel assembly in combination with a control rod assembly for a nuclear reactor
FR2168564A1 (en) * 1972-01-21 1973-08-31 Westinghouse Electric Corp
FR2213560A1 (en) * 1973-01-05 1974-08-02 Westinghouse Electric Corp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1013000A (en) * 1963-12-05 1965-12-15 Combustion Eng Arrangement of a fuel assembly in combination with a control rod assembly for a nuclear reactor
FR2168564A1 (en) * 1972-01-21 1973-08-31 Westinghouse Electric Corp
FR2213560A1 (en) * 1973-01-05 1974-08-02 Westinghouse Electric Corp

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562038A (en) * 1981-11-13 1985-12-31 Framatome & Cie Device for guiding a control cluster in a nuclear reactor
US4606881A (en) * 1981-12-04 1986-08-19 Framatome & Cie Upper internal equipment of a pressurized water nuclear reactor
FR2533353A1 (en) * 1982-09-16 1984-03-23 Fragema Framatome & Cogema DEVICE AND METHOD FOR WELDING ELEMENTS OF A NUCLEAR FUEL ASSEMBLY STRUCTURE
EP0105779A1 (en) * 1982-09-16 1984-04-18 SOCIETE COGEMA, FRAMATOME et URANIUM PECHINEY Appliance and process for welding nuclear fuel assembly structural elements
US5006305A (en) * 1983-06-03 1991-04-09 Framatome & Cie. Device for guiding the control clusters of nuclear reactors
EP0140283A1 (en) * 1983-10-28 1985-05-08 REAKTOR-BRENNELEMENT UNION GmbH Method of assembling a nuclear reactor fuel assembly
US4663510A (en) * 1983-10-28 1987-05-05 Reaktor-Brennelement Union Gmbh Method for assembling a nuclear reactor fuel element
EP0222373A1 (en) * 1985-11-14 1987-05-20 Westinghouse Electric Corporation Top end support for water displacement rod guides of pressurized water nuclear reactor
US4707331A (en) * 1985-11-14 1987-11-17 Westinghouse Electric Corp. Top end support for water displacement rod guides of pressurized water reactor
WO1995010113A1 (en) * 1993-10-04 1995-04-13 Electricite De France Device for removing heating rods from a pressurizer in a nuclear power plant
FR2711007A1 (en) * 1993-10-04 1995-04-14 Electricite De France Device for extracting heating rods from a nuclear power plant pressurizer.

Also Published As

Publication number Publication date
FR2411469B1 (en) 1983-06-03

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Legal Events

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TP Transmission of property
ST Notification of lapse