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GB836043A - Improvements in or relating to support structures for nuclear reactor fuel elements - Google Patents

Improvements in or relating to support structures for nuclear reactor fuel elements

Info

Publication number
GB836043A
GB836043A GB12618/57A GB1261857A GB836043A GB 836043 A GB836043 A GB 836043A GB 12618/57 A GB12618/57 A GB 12618/57A GB 1261857 A GB1261857 A GB 1261857A GB 836043 A GB836043 A GB 836043A
Authority
GB
United Kingdom
Prior art keywords
tubes
fuel elements
tube
long
equispaced
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
GB12618/57A
Inventor
John Tatlock
John Alexander Forbes Glass
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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
Priority to BE566895D priority Critical patent/BE566895A/xx
Priority to DENDAT1071856D priority patent/DE1071856B/de
Application filed by UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB12618/57A priority patent/GB836043A/en
Priority to FR1194777D priority patent/FR1194777A/en
Publication of GB836043A publication Critical patent/GB836043A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C1/00—Reactor types
    • G21C1/30—Subcritical reactors ; Experimental reactors other than swimming-pool reactors or zero-energy reactors
    • G21C1/303—Experimental or irradiation arrangements inside the reactor
    • 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
    • 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
    • G21C3/34—Spacer grids
    • 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
    • G21C3/34—Spacer grids
    • G21C3/3408—Compact spacer grids, e.g. made of a plate or a blade
    • 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
    • G21C3/34—Spacer grids
    • G21C3/344—Spacer grids formed of assembled tubular elements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C5/00—Moderator or core structure; Selection of materials for use as moderator
    • G21C5/02—Details
    • G21C5/08—Means for preventing undesired asymmetric expansion of the complete structure ; Stretching devices, pins
    • 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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

836,043. Nuclear reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 11, 1958 [April 17, 1957], No. 12618/57. Class 39(4). A support structure for fuel elements of a nuclear reactor comprises a nest of tubes having means holding them in face contact with one another on hexagonal sections in the tubes and the tubes intersecting with one another in other sections of greater area than the area of the hexagonal sections, the tubes having their centres corresponding with the corners of a symmetrical hexagonal lattice and arranged so that around any hexagon of the lattice tubes of greater length alternate with tubes of lesser length and arranged so that the tubes are fixed longitudinally to one another by their intersecting portions. Fig. 1 shows one of the long tubes 1 which is generally cylindrical but provided with six flat external faces 2 forming a regular hexagon, each face 2 having a central vertical slot. The tube 1 is provided with three equispaced shallow slots 4 and three equispaced deep slots 5 aligned above and below alternate faces 2. The short tubes, Fig. 2, each confines a cylindrical member 7 provided with six flat faces 8 each having a central vertical slot. The tube is provided with three equispaced slots 10 and three equispaced slots 11 aligned above and below alternate faces 8. As shown in Fig. 3 a long tube 1 and short tube 7 can engage one another with the portion 7a above slot 10 of the short tube engaging slot 4 of the long tube, and the portion 7b engaging slot 5. Thus an array of tubes can be built up with the long and short tubes alternating in hexagonal sections ; the array may be star shaped and the long tubes may extend between top and bottom plates provided with apertures to receive the tubes, the apertures preferably being slightly displaced from a symmetrical arrangement so that the tubes are bowed concave as seen from the centre. In use the tubes are charged with tubular fuel elements which are held in position by spaced bands of cooling fins provided on the fuel elements ; the concave bowing of the tubes prevents the fuel elements bowing convexly which would increase the reactivity of the core. Specification 813,131 is referred to.
GB12618/57A 1957-04-17 1957-04-17 Improvements in or relating to support structures for nuclear reactor fuel elements Expired GB836043A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE566895D BE566895A (en) 1957-04-17
DENDAT1071856D DE1071856B (en) 1957-04-17
GB12618/57A GB836043A (en) 1957-04-17 1957-04-17 Improvements in or relating to support structures for nuclear reactor fuel elements
FR1194777D FR1194777A (en) 1957-04-17 1958-04-16 Support structures of the cartridges of an atomic cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12618/57A GB836043A (en) 1957-04-17 1957-04-17 Improvements in or relating to support structures for nuclear reactor fuel elements

Publications (1)

Publication Number Publication Date
GB836043A true GB836043A (en) 1960-06-01

Family

ID=10008003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12618/57A Expired GB836043A (en) 1957-04-17 1957-04-17 Improvements in or relating to support structures for nuclear reactor fuel elements

Country Status (4)

Country Link
BE (1) BE566895A (en)
DE (1) DE1071856B (en)
FR (1) FR1194777A (en)
GB (1) GB836043A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295717B (en) * 1962-09-15 1969-05-22 Kernforschung Gmbh Ges Fuer Nuclear reactor fuel assembly made from nuclear fuel rods that are long in relation to their diameter and nuclear reactor fuel assembly made from these fuel assemblies
DE1203888B (en) * 1963-08-17 1965-10-28 Kernforschung Gmbh Ges Fuer Nuclear reactor fuel bundle
IT1170170B (en) * 1982-07-30 1987-06-03 Westinghouse Electric Corp NUCLEAR FUEL COMPLEX
US5313506A (en) * 1992-03-25 1994-05-17 General Electric Company Reduced pressure drop ferrule spacer

Also Published As

Publication number Publication date
FR1194777A (en) 1959-11-12
DE1071856B (en)
BE566895A (en)

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