GB1186346A - Improvements in or relating to Nuclear Reactor Fuel Elements - Google Patents

Improvements in or relating to Nuclear Reactor Fuel Elements

Info

Publication number
GB1186346A
GB1186346A GB08533/66A GB1853366A GB1186346A GB 1186346 A GB1186346 A GB 1186346A GB 08533/66 A GB08533/66 A GB 08533/66A GB 1853366 A GB1853366 A GB 1853366A GB 1186346 A GB1186346 A GB 1186346A
Authority
GB
United Kingdom
Prior art keywords
fuel
support grid
fuel rod
tabs
end portion
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
GB08533/66A
Inventor
William Francis Cookson
Peter Cocker
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
Application filed by UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB08533/66A priority Critical patent/GB1186346A/en
Priority to GB08532/66A priority patent/GB1179844A/en
Publication of GB1186346A publication Critical patent/GB1186346A/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
    • G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent 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)
  • Fuel Cell (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

1,186,346. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 9 May, 1967 [27 April, 1966], No. 18533/66. Heading G6C. A fuel element comprises a cluster of parallel, spaced fuel rods secured at one end to a support grid bearing the weight of the fuel rods, the securing of the fuel rods to the support grid being releasably effected by the deformation of a part of the support grid into engagement with an end portion of each fuel rod, whereby the fuel rods are restrained against axial movement relative to the support grid. In the embodiment shown in Fig. 2, a top support grid 18 has each of its cells 19 formed with an inturned continuous annular lip 21 at its lower end and eight hook-shaped tabs 22 separated by dots 23 at its upper end. Initially, the internal diameter measured across the outer edges of the tabs 22 is not less than that of the cylindrical portion 20 of the cell 19. Each fuel rod 24 has a tubular sheath 25 with circumferential or helical external fins 26, and an upper end portion 27 of enlarged diameter which terminates short of the extreme upper edge of the sheath 25. Interposed between the end cap 30 and the top fuel pellet 29 is a heat-insulating pellet 31 (e.g. alumina). The fuel rod 24 is fitted to the grid 18 from above and is moved downwardly until the lip 21 engages the shoulder 28 formed by the lower edge of the upper end portion 27. The tabs 22 are then deformed inwardly so that their upper edges meet circumferentially and enclose and contact the welded upper end 32 of the fuel rod, thereby preventing any significant upward axial movement of the fuel rod relative to the support grid.
GB08533/66A 1966-04-27 1966-04-27 Improvements in or relating to Nuclear Reactor Fuel Elements Expired GB1186346A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08533/66A GB1186346A (en) 1966-04-27 1966-04-27 Improvements in or relating to Nuclear Reactor Fuel Elements
GB08532/66A GB1179844A (en) 1966-04-27 1966-04-27 Improvements in or relating to nuclear reactor fuel elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08533/66A GB1186346A (en) 1966-04-27 1966-04-27 Improvements in or relating to Nuclear Reactor Fuel Elements
GB08532/66A GB1179844A (en) 1966-04-27 1966-04-27 Improvements in or relating to nuclear reactor fuel elements

Publications (1)

Publication Number Publication Date
GB1186346A true GB1186346A (en) 1970-04-02

Family

ID=26253438

Family Applications (2)

Application Number Title Priority Date Filing Date
GB08533/66A Expired GB1186346A (en) 1966-04-27 1966-04-27 Improvements in or relating to Nuclear Reactor Fuel Elements
GB08532/66A Expired GB1179844A (en) 1966-04-27 1966-04-27 Improvements in or relating to nuclear reactor fuel elements

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB08532/66A Expired GB1179844A (en) 1966-04-27 1966-04-27 Improvements in or relating to nuclear reactor fuel elements

Country Status (1)

Country Link
GB (2) GB1186346A (en)

Also Published As

Publication number Publication date
GB1179844A (en) 1970-02-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees