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FR3124885B1 - Nuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body. - Google Patents

Nuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body. Download PDF

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Publication number
FR3124885B1
FR3124885B1 FR2107188A FR2107188A FR3124885B1 FR 3124885 B1 FR3124885 B1 FR 3124885B1 FR 2107188 A FR2107188 A FR 2107188A FR 2107188 A FR2107188 A FR 2107188A FR 3124885 B1 FR3124885 B1 FR 3124885B1
Authority
FR
France
Prior art keywords
nuclear fuel
fuel assembly
bundle
fusible material
envelope including
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
FR2107188A
Other languages
French (fr)
Other versions
FR3124885A1 (en
Inventor
Thierry Beck
Bernard Valentin
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 et aux Energies Alternatives 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 et aux Energies Alternatives CEA filed Critical Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Priority to FR2107188A priority Critical patent/FR3124885B1/en
Publication of FR3124885A1 publication Critical patent/FR3124885A1/en
Application granted granted Critical
Publication of FR3124885B1 publication Critical patent/FR3124885B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/322—Means to influence the coolant flow through or around the bundles
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/324—Coats or envelopes for the bundles
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

Corps d’assemblage de combustible nucléaire, à double enveloppe dont celle intérieure en matériau fusible et assemblage de combustible nucléaire comportant un tel corps. L’invention concerne un corps (2) d’assemblage de combustible nucléaire, destiné à loger un faisceau d’aiguilles (100) de combustible nucléaire pour former un assemblage de combustible nucléaire (1), le corps d’axe longitudinal (X) comportant une enveloppe externe (21) sous la forme d’un tube hexagonal ajouré en matériau métallique et, à l’intérieur de l’enveloppe externe, une enveloppe interne (22), destiné à envelopper le faisceau d’aiguilles, sous la forme d’un tube hexagonal fermé et sensiblement étanche au liquide caloporteur destiné à traverser le faisceau d’aiguilles, le tube hexagonal fermé et étanche étant en matériau fusible à une température seuil prédéterminée, les deux tubes hexagonaux n’étant pas liés mécaniquement entre eux. Assemblage nucléaire intégrant un tel corps. Figure pour l’abrégé : Fig.9BNuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body. A nuclear fuel assembly body (2) for accommodating a nuclear fuel pin bundle (100) to form a nuclear fuel assembly (1), the longitudinal axis body (X) comprising an outer casing (21) in the form of a perforated hexagonal tube made of metallic material and, inside the outer casing, an inner casing (22), intended to envelop the bundle of needles, in the form a hexagonal tube closed and substantially impermeable to the heat transfer liquid intended to pass through the bundle of needles, the hexagonal tube closed and impervious being made of a material that melts at a predetermined threshold temperature, the two hexagonal tubes not being mechanically linked together. Nuclear assembly incorporating such a body. Figure for abstract: Fig.9B

FR2107188A 2021-07-02 2021-07-02 Nuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body. Active FR3124885B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2107188A FR3124885B1 (en) 2021-07-02 2021-07-02 Nuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2107188 2021-07-02
FR2107188A FR3124885B1 (en) 2021-07-02 2021-07-02 Nuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body.

Publications (2)

Publication Number Publication Date
FR3124885A1 FR3124885A1 (en) 2023-01-06
FR3124885B1 true FR3124885B1 (en) 2023-06-02

Family

ID=77519310

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2107188A Active FR3124885B1 (en) 2021-07-02 2021-07-02 Nuclear fuel assembly body, with a double envelope including the inner one made of fusible material and nuclear fuel assembly comprising such a body.

Country Status (1)

Country Link
FR (1) FR3124885B1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075522A (en) 1963-02-22 1967-07-12 Soc Anglo Belge Vulcain Sa Nuclear fuel assembly
GB1002784A (en) 1963-06-05 1965-08-25 Soc Anglo Belge Vulcain Sa Nuclear fuel assembly
FR2134104A1 (en) * 1971-04-20 1972-12-08 Commissariat Energie Atomique Nuclear fuel element sub-assembly - with coolant flow limited jacket temp around elongated needle matrix
FR2136901B1 (en) 1971-05-07 1975-02-21 Commissariat Energie Atomique
FR2951312B1 (en) 2009-10-08 2011-12-09 Commissariat Energie Atomique NUCLEAR FUEL ASSEMBLY BODY AND NUCLEAR FUEL ASSEMBLY COMPRISING SUCH A BODY
EP2610875A1 (en) 2011-12-30 2013-07-03 Paul Scherrer Institut A wrapper tube for a fuel subassembly of a nuclear reactor core and method for protecting fuel against overheating in case of coolant boiling
JP6219752B2 (en) 2014-03-04 2017-10-25 日立Ｇｅニュークリア・エナジー株式会社 Fast reactor core

Also Published As

Publication number Publication date
FR3124885A1 (en) 2023-01-06

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