GB1343877A - Pencil type nuclear fuel assembly - Google Patents

Pencil type nuclear fuel assembly

Info

Publication number
GB1343877A
GB1343877A GB3327972A GB3327972A GB1343877A GB 1343877 A GB1343877 A GB 1343877A GB 3327972 A GB3327972 A GB 3327972A GB 3327972 A GB3327972 A GB 3327972A GB 1343877 A GB1343877 A GB 1343877A
Authority
GB
United Kingdom
Prior art keywords
pencils
fuel
corrugations
envelope
sheet metal
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.)
Expired
Application number
GB3327972A
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
Publication of GB1343877A publication Critical patent/GB1343877A/en
Expired legal-status Critical Current

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
    • G21C3/336—Spacer elements for fuel rods in the bundle
    • G21C3/338—Helicoidal spacer elements
    • 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
    • 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

1343877 Fuel elements COMMISSARIAT A L'ENERGIE ATOMIQUE 17 July 1972 [29 July 1971] 33279/72 Heading G6C A nuclear fuel assembly of the type comprising a bundle of canned fuel pencils 10 arranged parallel to each other in an envelope 12 bounding a coolant duct has a sheet metal member 16 bearing on the envelope 12, the member 16 taking the form of a number of thin panels each placed up against an inside surface of the envelope 12 and having corrugations 18 not parallel to the fuel pencils 10, and determining the minimum spacing between the peripheral pencils 10 of the bundle and the envelope 12. The minimum spacing between each fuel pencil 10 and the adjacent pencils is determined by helical bracing members 14 borne by the pencils over at least most of their length. The corrugations 18 may in cross-section be semi-circular (or semi-elliptical) or be sharp-cornered bends, and they may extend transversely of the fuel pencils 10 or be inclined thereto. The sheet metal member 16 is formed with perforations so that the coolant can flow freely through the corrugations and reduce pressures tending to deform the sheet metal member. The perforations are formed in the corrugations 18 as evenly spaced holes (20, 20a) (Figs. 2 and 3, not shown) or as occasional discontinuities or saw cuts. The sheet metal member 16 may be corrugated only over that part opposite the fissile material-containing regions of the fuel pencils 10, in which case those parts of the member 16 upstream and downstream of the corrugated part are thicker than the latter and bear on the bracing members 14 of the adjacent fuel pencils. The fuel assembly described is for use in a liquid sodium cooled fast reactor.
GB3327972A 1971-07-29 1972-07-17 Pencil type nuclear fuel assembly Expired GB1343877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7127809A FR2146975B1 (en) 1971-07-29 1971-07-29

Publications (1)

Publication Number Publication Date
GB1343877A true GB1343877A (en) 1974-01-16

Family

ID=9081127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3327972A Expired GB1343877A (en) 1971-07-29 1972-07-17 Pencil type nuclear fuel assembly

Country Status (3)

Country Link
DE (1) DE2236494A1 (en)
FR (1) FR2146975B1 (en)
GB (1) GB1343877A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281631A1 (en) * 1974-08-08 1976-03-05 Atomic Energy Authority Uk Nuclear reactor fuel assembly - with elements spaced by helical fins arranged to reduce coolant flow around outer elements
FR2552921B1 (en) * 1983-09-30 1985-12-27 Framatome Sa FUEL ASSEMBLY FOR A PRESSURE WATER NUCLEAR REACTOR
JPH0631755B2 (en) * 1986-11-29 1994-04-27 動力炉・核燃料開発事業団 Method of manufacturing wire spacer type fuel assembly
DE4041348A1 (en) * 1990-12-21 1992-06-25 Siemens Ag CORE REACTOR, ESPECIALLY CONTROL

Also Published As

Publication number Publication date
FR2146975A1 (en) 1973-03-09
DE2236494A1 (en) 1973-02-08
FR2146975B1 (en) 1974-09-06

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee