GB1222718A - Improvements in or relating to nuclear reactors - Google Patents

Improvements in or relating to nuclear reactors

Info

Publication number
GB1222718A
GB1222718A GB49407/68A GB4940768A GB1222718A GB 1222718 A GB1222718 A GB 1222718A GB 49407/68 A GB49407/68 A GB 49407/68A GB 4940768 A GB4940768 A GB 4940768A GB 1222718 A GB1222718 A GB 1222718A
Authority
GB
United Kingdom
Prior art keywords
fuel
elements
reactor
reactor core
casings
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
GB49407/68A
Inventor
Hartwig Benzler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB49407/68A priority Critical patent/GB1222718A/en
Priority to CH1578368A priority patent/CH483693A/en
Priority to BE722970A priority patent/BE722970A/xx
Priority to FR172018A priority patent/FR1590742A/fr
Publication of GB1222718A publication Critical patent/GB1222718A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C15/00Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/02Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C1/00Reactor types
    • G21C1/02Fast fission reactors, i.e. reactors not using a moderator ; Metal cooled reactors; Fast breeders
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C3/00Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/02Fuel elements
    • G21C3/04Constructional details
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C3/00Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/36Assemblies of plate-shaped fuel elements or coaxial tubes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

1,222,718. Reactors. H. BENZLER. 18 Oct., 1968, No.49407/68. Heading G6C. A fast gas-cooled nuclear reactor comprises a plurality of flat plate-shaped fuel elements each including ceramic fuel and a metallic casing. The thickness of the fuel and the spacing between adjacent elements in each part of the reactor are so arranged that throughout the reactor at full load the inner parts of the fuel are at the same temperature, also the fuel casings are at the same temperature. The pressure loss can be reduced to at least one half in comparison with an equivalent reactor core having rod-shaped elements, which is particularly important for gas-cooled reactors. If the elements of the breeding cover, i.e. the cover of a jacket around the reactor core, are formed in a similar way to the core elements, then a reduction of the pressure loss by a factor of from 4 to 6 is achieved. Furthermore, the volume of the cooling medium in the outer radial zones can be reduced, resulting in the reactor accommodating more fuel and the thermal loading of the outer cooling channels being advantageously raised. Also, by achieving the maximum permissible fuel temperature in the whole reactor core, the negative temperature coefficient of the reactivity is advantageously increased. The fuel elements may be assembled in bundles with the aid of spacers and each bundle inserted in an outer casing or in a support member. In a particular .construction, several bundles of fuel elements are stacked one upon another in each outer easing with adjacent bundles angular staggered, e.g. by 90 degrees. In order to avoid the pressure build-up of fission product gases, the interior of each fuel element is maintained by suction through a communicating duct system at a pressure below that of the cooling medium. The ceramic fuel may be inserted and fixed in the metallic casings in the form of prepressed panels. The metallic casings may be interrupted as in a cage, by which means a free diffusion of the fission products is made possible which results in a reduction of the metallic components in the reactor core and a simultaneous increase in the breeding rate. In an example, the fuel is a UO 2 -PuO 2 mixture of 20 to 25% by wt. fission material (U-235 and Pu) enrichment within a casing of austenitic steel. The cooling medium is CO 2 . The reactor core is surrounded on all sides by a jacket formed from a plurality of casings each containing stacked bundles of plate-shaped breeding elements.
GB49407/68A 1968-10-18 1968-10-18 Improvements in or relating to nuclear reactors Expired GB1222718A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB49407/68A GB1222718A (en) 1968-10-18 1968-10-18 Improvements in or relating to nuclear reactors
CH1578368A CH483693A (en) 1968-10-18 1968-10-22 Fast nuclear reactor
BE722970A BE722970A (en) 1968-10-18 1968-10-28
FR172018A FR1590742A (en) 1968-10-18 1968-10-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49407/68A GB1222718A (en) 1968-10-18 1968-10-18 Improvements in or relating to nuclear reactors

Publications (1)

Publication Number Publication Date
GB1222718A true GB1222718A (en) 1971-02-17

Family

ID=10452237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49407/68A Expired GB1222718A (en) 1968-10-18 1968-10-18 Improvements in or relating to nuclear reactors

Country Status (4)

Country Link
BE (1) BE722970A (en)
CH (1) CH483693A (en)
FR (1) FR1590742A (en)
GB (1) GB1222718A (en)

Also Published As

Publication number Publication date
BE722970A (en) 1969-04-01
CH483693A (en) 1969-12-31
FR1590742A (en) 1970-04-20

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