FR2938964B1 - METHOD AND APPARATUS FOR DRILLING ELECTRON DISCHARGE OF A CAP OF A STEAM GENERATOR TUBE OF A PRESSURE WATER NUCLEAR POWER PLANT - Google Patents

METHOD AND APPARATUS FOR DRILLING ELECTRON DISCHARGE OF A CAP OF A STEAM GENERATOR TUBE OF A PRESSURE WATER NUCLEAR POWER PLANT

Info

Publication number
FR2938964B1
FR2938964B1 FR0858041A FR0858041A FR2938964B1 FR 2938964 B1 FR2938964 B1 FR 2938964B1 FR 0858041 A FR0858041 A FR 0858041A FR 0858041 A FR0858041 A FR 0858041A FR 2938964 B1 FR2938964 B1 FR 2938964B1
Authority
FR
France
Prior art keywords
electrode
electron discharge
steam generator
cap
tube
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.)
Active
Application number
FR0858041A
Other languages
French (fr)
Other versions
FR2938964A1 (en
Inventor
Olivier Theallier
Jean Yves Ginda
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.)
Areva NP SAS
Original Assignee
Areva NP SAS
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 Areva NP SAS filed Critical Areva NP SAS
Priority to FR0858041A priority Critical patent/FR2938964B1/en
Publication of FR2938964A1 publication Critical patent/FR2938964A1/en
Application granted granted Critical
Publication of FR2938964B1 publication Critical patent/FR2938964B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
    • B23H7/30—Moving electrode in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/001—Disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/14—Making holes
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/06—Sealing-plugs
    • G21C13/067—Sealing-plugs for tubes, e.g. standpipes; Locking devices for plugs
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/10—Means for preventing contamination in the event of leakage, e.g. double wall
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D1/00—Details of nuclear power plant
    • G21D1/006—Details of nuclear power plant primary side of steam generators
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne un procédé de perçage par décharge d'électrons d'un bouchon (10) d'un tube (5) de générateur de vapeur, dans lequel on monte sur un ensemble (21) de support et de guidage, une électrode (22) de perçage par décharge d'électrons, on règle la position de l'électrode (22), on introduit dans la boîte à eau et on fixe au-dessous de la plaque tubulaire, l'ensemble (21) de support et de guidage pour placer l'électrode (22) dans le tube (5), on alimente l'électrode (22) en courant électrique, on déplace l'électrode dans le tube (5) et on avance l'électrode (22) à travers le fond du bouchon (10) et, simultanément, on met en mouvement de va et vient l'électrode (22) pour effectuer le perçage du fond du bouchon (10) par un arc de désintégration créé entre l'extrémité libre de l'électrode (22) et le fond du bouchon (10) et on vérifie le perçage du fond dudit bouchon (10).The invention relates to a method for piercing by electron discharge a plug (10) of a tube (5) of a steam generator, in which an electrode is mounted on a support and guide assembly (21). (22) piercing by electron discharge, the position of the electrode (22) is adjusted, it is introduced into the water box and the support assembly (21) is fixed below the tube plate and guide to place the electrode (22) in the tube (5), the electrode (22) is supplied with electric current, the electrode is moved in the tube (5) and the electrode (22) is advanced to through the bottom of the stopper (10) and, simultaneously, the electrode (22) is moved back and forth in order to pierce the bottom of the stopper (10) by a disintegration arc created between the free end of the 'electrode (22) and the bottom of the plug (10) and the drilling of the bottom of said plug (10) is checked.

FR0858041A 2008-11-27 2008-11-27 METHOD AND APPARATUS FOR DRILLING ELECTRON DISCHARGE OF A CAP OF A STEAM GENERATOR TUBE OF A PRESSURE WATER NUCLEAR POWER PLANT Active FR2938964B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0858041A FR2938964B1 (en) 2008-11-27 2008-11-27 METHOD AND APPARATUS FOR DRILLING ELECTRON DISCHARGE OF A CAP OF A STEAM GENERATOR TUBE OF A PRESSURE WATER NUCLEAR POWER PLANT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0858041A FR2938964B1 (en) 2008-11-27 2008-11-27 METHOD AND APPARATUS FOR DRILLING ELECTRON DISCHARGE OF A CAP OF A STEAM GENERATOR TUBE OF A PRESSURE WATER NUCLEAR POWER PLANT

Publications (2)

Publication Number Publication Date
FR2938964A1 FR2938964A1 (en) 2010-05-28
FR2938964B1 true FR2938964B1 (en) 2011-06-03

Family

ID=40790979

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0858041A Active FR2938964B1 (en) 2008-11-27 2008-11-27 METHOD AND APPARATUS FOR DRILLING ELECTRON DISCHARGE OF A CAP OF A STEAM GENERATOR TUBE OF A PRESSURE WATER NUCLEAR POWER PLANT

Country Status (1)

Country Link
FR (1) FR2938964B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972244B1 (en) * 2011-03-04 2015-07-17 Areva Np METHOD FOR REPAIRING A PRESSURIZER AND TOOLING FOR IMPLEMENTING THE METHOD
CN108098091A (en) * 2016-11-25 2018-06-01 沈阳黎明航空发动机(集团)有限责任公司 A kind of guidance system that can improve high-speed electric spark punching interference phenomenon

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4804814A (en) * 1987-10-08 1989-02-14 Combustion Engineering, Inc. Electron discharge machining tool
FR2645060B1 (en) * 1989-04-04 1991-07-19 Framatome Sa METHOD AND DEVICES FOR EXTRACTING A PLUG FROM A VAPOR GENERATOR TUBE
US5225645A (en) * 1990-07-02 1993-07-06 Combustion Engineering, Inc. Electron discharge machining tool

Also Published As

Publication number Publication date
FR2938964A1 (en) 2010-05-28

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