FR2429476A1 - Absorbent needle for assembly in reactor control rod - has metal sleeve crimped and not welded to plugs - Google Patents

Absorbent needle for assembly in reactor control rod - has metal sleeve crimped and not welded to plugs

Info

Publication number
FR2429476A1
FR2429476A1 FR7818824A FR7818824A FR2429476A1 FR 2429476 A1 FR2429476 A1 FR 2429476A1 FR 7818824 A FR7818824 A FR 7818824A FR 7818824 A FR7818824 A FR 7818824A FR 2429476 A1 FR2429476 A1 FR 2429476A1
Authority
FR
France
Prior art keywords
plugs
welded
absorbent
assembly
plug
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
FR7818824A
Other languages
French (fr)
Other versions
FR2429476B1 (en
Inventor
Bernard Poignet
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 FR7818824A priority Critical patent/FR2429476A1/en
Priority to IT23766/79A priority patent/IT1121594B/en
Publication of FR2429476A1 publication Critical patent/FR2429476A1/en
Application granted granted Critical
Publication of FR2429476B1 publication Critical patent/FR2429476B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G21C7/103—Control assemblies containing one or more absorbants as well as other elements, e.g. fuel or moderator 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The metal sleeve and its plugs forming an absorbent needle for assembly into a nuclear reactor, are crimped together, the surface of the plug having undulations into which the sleeve mantle is compressed. The absorbent needles are assembled in gps. in a hollow housing through which the cooling liq. metal circulates, and one plug at least is, during service, exposed to an intense flux of neutrons. When the plugs are welded, the metallurgical structure of the sleeve is altered and the metal swells after exposure to the neutron flux. The crimping operation prevents the circulation of the coolant being obstructed and/or loss of the absorbent material with the plug.
FR7818824A 1978-06-23 1978-06-23 Absorbent needle for assembly in reactor control rod - has metal sleeve crimped and not welded to plugs Granted FR2429476A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7818824A FR2429476A1 (en) 1978-06-23 1978-06-23 Absorbent needle for assembly in reactor control rod - has metal sleeve crimped and not welded to plugs
IT23766/79A IT1121594B (en) 1978-06-23 1979-06-21 NEEDLE OF AN ABSORBENT COMPLEX FOR NUCLEAR REACTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7818824A FR2429476A1 (en) 1978-06-23 1978-06-23 Absorbent needle for assembly in reactor control rod - has metal sleeve crimped and not welded to plugs

Publications (2)

Publication Number Publication Date
FR2429476A1 true FR2429476A1 (en) 1980-01-18
FR2429476B1 FR2429476B1 (en) 1981-10-16

Family

ID=9209909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818824A Granted FR2429476A1 (en) 1978-06-23 1978-06-23 Absorbent needle for assembly in reactor control rod - has metal sleeve crimped and not welded to plugs

Country Status (2)

Country Link
FR (1) FR2429476A1 (en)
IT (1) IT1121594B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835711A1 (en) * 1988-10-20 1990-04-26 Bbc Reaktor Gmbh CONTROL STAFF TO INFLUENCE THE REACTIVITY OF A CORE REACTOR AND ARRANGEMENT OF SEVERAL THESE STEERING STEELS TO A CONTROL UNIT
FR2788161A1 (en) * 1998-12-30 2000-07-07 Framatome Sa ABSORBENT PENCIL FOR NUCLEAR REACTOR CONTROL CLUSTER

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1313033A (en) * 1961-02-06 1962-12-21 Atomic Energy Commission New type of control rod for nuclear reactors
FR1475174A (en) * 1965-11-12 1967-03-31 Euratom Tight fixing of a fuel element sheath on its plug
FR91259E (en) * 1966-09-02 1968-05-17 Atomic Energy Authority Uk Fuel cartridges for nuclear reactors
DE1564632A1 (en) * 1966-06-18 1970-01-22 Siemens Ag Termination of zirconium-encased nuclear reactor fuel rods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1313033A (en) * 1961-02-06 1962-12-21 Atomic Energy Commission New type of control rod for nuclear reactors
FR1475174A (en) * 1965-11-12 1967-03-31 Euratom Tight fixing of a fuel element sheath on its plug
DE1564632A1 (en) * 1966-06-18 1970-01-22 Siemens Ag Termination of zirconium-encased nuclear reactor fuel rods
FR91259E (en) * 1966-09-02 1968-05-17 Atomic Energy Authority Uk Fuel cartridges for nuclear reactors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835711A1 (en) * 1988-10-20 1990-04-26 Bbc Reaktor Gmbh CONTROL STAFF TO INFLUENCE THE REACTIVITY OF A CORE REACTOR AND ARRANGEMENT OF SEVERAL THESE STEERING STEELS TO A CONTROL UNIT
FR2788161A1 (en) * 1998-12-30 2000-07-07 Framatome Sa ABSORBENT PENCIL FOR NUCLEAR REACTOR CONTROL CLUSTER
WO2000041183A1 (en) * 1998-12-30 2000-07-13 Framatome Absorbent pencil for nuclear reactor control cluster
JP2002534693A (en) * 1998-12-30 2002-10-15 フラマトム Reactor absorption rod

Also Published As

Publication number Publication date
IT7923766A0 (en) 1979-06-21
FR2429476B1 (en) 1981-10-16
IT1121594B (en) 1986-04-02

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse