GB971930A - Improvements in or relating to nuclear fuel elements - Google Patents

Improvements in or relating to nuclear fuel elements

Info

Publication number
GB971930A
GB971930A GB21682/62A GB2168262A GB971930A GB 971930 A GB971930 A GB 971930A GB 21682/62 A GB21682/62 A GB 21682/62A GB 2168262 A GB2168262 A GB 2168262A GB 971930 A GB971930 A GB 971930A
Authority
GB
United Kingdom
Prior art keywords
stamp
stamps
monobloc
press
compression
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
GB21682/62A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB971930A publication Critical patent/GB971930A/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
    • G21C3/04—Constructional details
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
    • G21C21/02—Manufacture of fuel elements or breeder elements contained in non-active casings
    • 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
    • G21C3/04—Constructional details
    • G21C3/16—Details of the construction within the casing
    • 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
    • G21C3/42—Selection of substances for use as reactor fuel
    • G21C3/58—Solid reactor fuel Pellets made of fissile material
    • G21C3/62—Ceramic fuel
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Glanulating (AREA)

Abstract

971,930. Moulding refractory materials. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 5, 1962 [June 12, 1961], No. 21682/62. Heading B5A. [Also in Division G6] Nuclear fuel pellets are made by mixing a powdered refractory fuel material, e.g. uranium oxide, carbide, nitride or silicide, with a suitable binder and lubricant to form a paste which is granulated, the grains being dried and screened and then compressed in a press provided with two monobloc stamps of truncated conical shape to form male and/or female end parts on the pellets. Alternatively, as shown in Fig. 8, the press may have one monobloc and one multiple stamp, the latter comprising two coaxial cylindrical stamps 18, 19 slidable in relation to one another and shaped to form a male end part. The monobloc stamp 17 forms a female end part. The head 21 of the inner stamp 18 is attached to a plate 23 by means of a screw 24 whereas the head 22 of the outer stamp 19 rests on three equi-spaced stops 25 spaced from one another at angles of 120 degrees around the head 21, a rubber ring 20 being located between the heads 21, 22. Compression of the granules 15 is effected by lowering the stamps 18, 19, the outer stamp 19 stopping on touching the granular mass while the inner stamp 18 slides within the stamp 19 until the heads 21, 22 abut, whence the stamps 18, 19 apply equal pressure to the granules 15. The compression should be bilateral if the pellet is to have equal densities in two cross-sections symmetrical in relation to the median plane of the pellet and this may be achieved by mounting the press block on springs, this causing the stamp 17 to have a relative upward movement with respect to the granular mass. A press having one monobloc and one multiple stamp as described above provides for the manufacture of larger pellets than a press having two monobloc stamps. After compression is applied, the pellet obtained is ejected by returning the stamps 18, 19 to their initial high position and raising the stamp 17.
GB21682/62A 1961-06-12 1962-06-05 Improvements in or relating to nuclear fuel elements Expired GB971930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR864583A FR1299652A (en) 1961-06-12 1961-06-12 Nuclear fuel pellets with special profiles and their manufacturing process

Publications (1)

Publication Number Publication Date
GB971930A true GB971930A (en) 1964-10-07

Family

ID=8757009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21682/62A Expired GB971930A (en) 1961-06-12 1962-06-05 Improvements in or relating to nuclear fuel elements

Country Status (5)

Country Link
BE (1) BE618553A (en)
CH (1) CH388476A (en)
FR (1) FR1299652A (en)
GB (1) GB971930A (en)
LU (1) LU41839A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365371A (en) * 1966-10-14 1968-01-23 Gen Electric Nuclear reactor fuel pellet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842402C2 (en) * 1978-09-29 1982-06-09 Nukem Gmbh, 6450 Hanau Process for the production of ceramic fuel pellets for nuclear reactors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365371A (en) * 1966-10-14 1968-01-23 Gen Electric Nuclear reactor fuel pellet

Also Published As

Publication number Publication date
CH388476A (en) 1965-02-28
LU41839A1 (en) 1962-08-06
FR1299652A (en) 1962-07-27
BE618553A (en) 1962-10-01

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