GB1301476A - - Google Patents

Info

Publication number
GB1301476A
GB1301476A GB4371969A GB1301476DA GB1301476A GB 1301476 A GB1301476 A GB 1301476A GB 4371969 A GB4371969 A GB 4371969A GB 1301476D A GB1301476D A GB 1301476DA GB 1301476 A GB1301476 A GB 1301476A
Authority
GB
United Kingdom
Prior art keywords
ferrule
spring
ferrules
support members
grid
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
GB4371969A
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 filed Critical
Publication of GB1301476A publication Critical patent/GB1301476A/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
    • G21C3/34—Spacer grids
    • G21C3/344—Spacer grids formed of assembled tubular 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Revetment (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1301476 Fuel elements UNITED KING- DOM ATOMIC ENERGY AUTHORITY 18 Aug 1970 [3 Sept 1969] 43719/69 Heading G6C A spacer grid for a fuel element assembly comprises a central ferrule and an outer band joined by radial webs which divide the grid into sectors each containing a number of tubular ferrules 5, such as that shown in Fig. 2. The ferrules 5 are joined by spot welding at their points of contact with each other and with the central ferrule, the outer band and the radial webs. Each ferrule 5 is penetrated by a fuel pin 6. Two rigid support members 7 (only one shown), are provided in each ferrule 5, in the form of dimples pressed out of the material of the ferrules and spaced apart by 120 degrees. Each ferrule 5 is fitted with a spring member 8 opposite to the support members 7, in the form of a strip of spring material spot welded longitudinally in the ferrule 5. The extremities 9 of the spring member 8 are bent inwards to engage the fuel pin 6 and bias it into engagement with the support members 7. The spring members 8 are arranged in concentric circles, each back-to-back with one of an adjoining ferrule so that the spring reactions are substantially cancelled out and torsional stresses on the grid are avoided.
GB4371969A 1969-09-03 1969-09-03 Expired GB1301476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4371969 1969-09-03

Publications (1)

Publication Number Publication Date
GB1301476A true GB1301476A (en) 1972-12-29

Family

ID=10430033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4371969A Expired GB1301476A (en) 1969-09-03 1969-09-03

Country Status (7)

Country Link
JP (1) JPS5111753B1 (en)
BE (1) BE755644A (en)
DE (2) DE2043049A1 (en)
ES (1) ES383356A1 (en)
FR (1) FR2060380B1 (en)
GB (1) GB1301476A (en)
SE (1) SE346175C (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1534275A (en) * 1966-08-15 1968-07-26 Atomenergi Ab Spacer device for fuel rods of a nuclear reactor fuel element

Also Published As

Publication number Publication date
BE755644A (en) 1971-03-02
SE346175B (en) 1972-06-26
DE2043049A1 (en) 1971-04-22
DE7032433U (en) 1971-03-25
SE346175C (en) 1975-03-10
ES383356A1 (en) 1975-06-16
FR2060380B1 (en) 1974-10-11
JPS5111753B1 (en) 1976-04-13
FR2060380A1 (en) 1971-06-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee