GB1048187A - Fuel elements for nuclear reactors - Google Patents

Fuel elements for nuclear reactors

Info

Publication number
GB1048187A
GB1048187A GB36425/63A GB3642563A GB1048187A GB 1048187 A GB1048187 A GB 1048187A GB 36425/63 A GB36425/63 A GB 36425/63A GB 3642563 A GB3642563 A GB 3642563A GB 1048187 A GB1048187 A GB 1048187A
Authority
GB
United Kingdom
Prior art keywords
fuel
grains
beo
elements
ceramic
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
GB36425/63A
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.)
Gesellschaft fuer Kernforschung mbH
Original Assignee
Gesellschaft fuer Kernforschung mbH
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 Gesellschaft fuer Kernforschung mbH filed Critical Gesellschaft fuer Kernforschung mbH
Publication of GB1048187A publication Critical patent/GB1048187A/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
    • G21C3/02—Fuel elements
    • G21C3/28—Fuel elements with fissile or breeder material in solid form within a non-active casing
    • 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)
  • Powder Metallurgy (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

1,048,187. Fuel elements. GESSELLSCHAFT FUR KERNFORSCHUNG m.b.H. Sept. 16, 1963 [Sept. 15, 1962], No. 36425/63. Heading G6C. A nuclear fuel element comprising a ceramic fuel material, e.g. UO2 or PuO2, surrounded by a substantially gas-tight can, also of ceramic material, e.g. BeO, is made by pressing the ceramic materials together in granular form and sintering, the can material being of a grading finer than that of the fuel material by several orders of magnitude, so that after manufacture a compressive force is exerted by the can upon the fuel due to the greater shrinkage of the can material. This has the effect of eliminating the tensile stresses which would otherwise be set up in the can by the gaseous fission products which is important since ceramics, although withstanding very high pressures, will fracture under relatively small tensile stresses. The fuel may be heated in powder form to a temperature at which the powder particles coagulate to form grains and then cooled so that the surface of the grains solidifies while the interior remains plastic. Further cooling causes the interior to shrink upon the solidified surface causing internal voids to be formed which are capable of absorbing a considerable portion of the fission gases formed, thus decreasing the load upon the can. A plurality of these grains may be sintered together to form a fuel unit, preferably using BeO as a bonding agent. The use of BeO improves the sintering of the grains, the bonding of the fuel units and the canning, and the thermal conductivity of the element. Spherically-shaped fuel elements according to the invention can be inserted into a reactor as bulk material, or the elements can be combined with the aid of a bonding agent to form clusters. Spheres of moderator material of the same size as the fuel elements may be added to the clusters.
GB36425/63A 1962-09-15 1963-09-16 Fuel elements for nuclear reactors Expired GB1048187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK47736A DE1214334B (en) 1962-09-15 1962-09-15 Process for the production of fuel elements for nuclear reactors

Publications (1)

Publication Number Publication Date
GB1048187A true GB1048187A (en) 1966-11-16

Family

ID=7224675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36425/63A Expired GB1048187A (en) 1962-09-15 1963-09-16 Fuel elements for nuclear reactors

Country Status (2)

Country Link
DE (1) DE1214334B (en)
GB (1) GB1048187A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182077A (en) * 1991-04-15 1993-01-26 Gamma Engineering Corporation Water cooled nuclear reactor and fuel elements therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015952B (en) * 1956-06-06 1957-09-19 Degussa Process for cladding fuel assemblies for reactors with a covering made of aluminum or aluminum alloys
GB831679A (en) * 1957-05-21 1960-03-30 Norton Grinding Wheel Co Ltd Ceramic nuclear fuel element
BE571086A (en) * 1957-10-14

Also Published As

Publication number Publication date
DE1214334B (en) 1966-04-14

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