SE7317178L - - Google Patents

Info

Publication number
SE7317178L
SE7317178L SE7317178A SE7317178A SE7317178L SE 7317178 L SE7317178 L SE 7317178L SE 7317178 A SE7317178 A SE 7317178A SE 7317178 A SE7317178 A SE 7317178A SE 7317178 L SE7317178 L SE 7317178L
Authority
SE
Sweden
Prior art keywords
fuel
water
side surfaces
casings
fuel assembly
Prior art date
Application number
SE7317178A
Other versions
SE378930B (en
Inventor
A Suvanto
Original Assignee
Asea Atom Ab
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 Asea Atom Ab filed Critical Asea Atom Ab
Priority to SE7317178A priority Critical patent/SE378930B/xx
Priority to DE19742458016 priority patent/DE2458016C3/en
Priority to IT70672/74A priority patent/IT1027111B/en
Priority to GB54591/74A priority patent/GB1482788A/en
Priority to FR7441764A priority patent/FR2255679B1/fr
Priority to JP14553374A priority patent/JPS5732359B2/ja
Publication of SE7317178L publication Critical patent/SE7317178L/xx
Publication of SE378930B publication Critical patent/SE378930B/xx

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
    • G21C3/324—Coats or envelopes for the bundles
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C5/00—Moderator or core structure; Selection of materials for use as moderator
    • G21C5/02—Details
    • G21C5/06—Means for locating or supporting fuel elements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C5/00—Moderator or core structure; Selection of materials for use as moderator
    • G21C5/14—Moderator or core structure; Selection of materials for use as moderator characterised by shape
    • G21C5/16—Shape of its constituent parts
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/10—Construction of control elements
    • G21C7/117—Clusters of control rods; Spider construction
    • 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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

1482788 Reactors ASEA-ATOM AB 18 Dec 1974 [20 Dec 1973] 54591/74 Heading G6C A water-cooled reactor core comprises a plurality of fuel assemblies supported by vertical water tubes, each fuel assembly having a casing formed with a plurality of first side surfaces parallel to and in direct contact with similar side surfaces of a plurality of adjacent casings, and with second side surfaces which, together with similar side surfaces of other casings, define a plurality of cylindrical, vertical channels for control rods. In the Fig. 2 embodiment, each fuel assembly 4 of a boiling water reactor comprises twelve fuel rods 5 within a square section casing 15 having chamfered corners 18 which define channels 19, some of which serve as guide tubes for the control rod fingers 11 of a control member of the type shown in Fig. 5. The fuel assemblies 4 are arranged in groups of nine, each group being positioned on a common assembly supporting plate 6 (Fig. 4) which has apertures 7 at the top through which water is supplied from a water tube 8 to each of the nine fuel assemblies 4 of the group. Four assembly groups constitute one core module, and each module has one control member. Each control member has sisteen control rod fingers 11 attached to a yoke lying in a horizontal plane and supported by a central shaft 9. The yoke (Fig. 5) comprises four rings connected rigidly to each other and to the shaft 9, each ring surrounding a water tube 8 and being provided with two guide wheels 13 which engage the tube 8. In alternative embodiments, the fuel assembly casing are circular or made with alternately curved and plane cylindrical surfaces (Fig. 7, not shown), are of regular pentagonal crosssection (Fig. 8, not shown), or are of chamfered regular triangular or hexagonal cross-section (Figs. 9 and 10, not shown). The effect of the reduced width of the contact surface between adjoining fuel assembly casings is a reduction in the forced ageing, i.e. plastic deformation even at a relatively low mechanical stress and increasing with the passage of time, of the Zr alloy used for the fuel assembly casings under neutron irradiation.
SE7317178A 1973-12-20 1973-12-20 SE378930B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE7317178A SE378930B (en) 1973-12-20 1973-12-20
DE19742458016 DE2458016C3 (en) 1973-12-20 1974-12-07 Nuclear reactor with several fuel tanks supported by vertical water pipes
IT70672/74A IT1027111B (en) 1973-12-20 1974-12-18 NUCLEAR REACTOR INCLUDING FUEL GROUPS SUPPORTED BY VERTICAL WATER PIPES
GB54591/74A GB1482788A (en) 1973-12-20 1974-12-18 Nuclear reactors
FR7441764A FR2255679B1 (en) 1973-12-20 1974-12-18
JP14553374A JPS5732359B2 (en) 1973-12-20 1974-12-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7317178A SE378930B (en) 1973-12-20 1973-12-20

Publications (2)

Publication Number Publication Date
SE7317178L true SE7317178L (en) 1975-06-23
SE378930B SE378930B (en) 1975-09-15

Family

ID=20319447

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7317178A SE378930B (en) 1973-12-20 1973-12-20

Country Status (5)

Country Link
JP (1) JPS5732359B2 (en)
FR (1) FR2255679B1 (en)
GB (1) GB1482788A (en)
IT (1) IT1027111B (en)
SE (1) SE378930B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477892A (en) * 1977-12-02 1979-06-21 Toshiba Corp Nuclear reactor
US4314885A (en) * 1978-10-18 1982-02-09 The Babcock & Wilcox Company Industrial technique
DE3008442A1 (en) * 1980-03-05 1981-09-10 Kraftwerk Union AG, 4330 Mülheim FUEL ELEMENT FOR A CORE REACTOR
SE421969B (en) * 1980-03-17 1982-02-08 Asea Atom Ab FUEL CARTRIDGE FOR A COOKING REACTOR
SE423760B (en) * 1980-11-05 1982-05-24 Asea Atom Ab KERNBRENSLEPATRON
SE426271B (en) * 1981-05-04 1982-12-20 Asea Atom Ab KERNBRENSLEPATRON
FR2517869B1 (en) * 1981-12-04 1986-08-08 Framatome Sa ADDITIONAL SHUTDOWN DEVICE FOR A SUBMODER NUCLEAR REACTOR
SE433986B (en) * 1982-07-12 1984-06-25 Asea Atom Ab KERNBRENSLEPATRON
US4798699A (en) * 1984-07-26 1989-01-17 Westinghouse Electric Corp. Wear sleeve for a control rod end plug
FR2599884B1 (en) * 1986-06-10 1988-10-07 Fragema Framatome & Cogema ADJUSTMENT GRAPPLE WITH REMOVABLE PENCILS FOR NUCLEAR FUEL ASSEMBLY

Also Published As

Publication number Publication date
DE2458016A1 (en) 1975-06-26
DE2458016B2 (en) 1976-10-07
JPS5732359B2 (en) 1982-07-10
FR2255679A1 (en) 1975-07-18
FR2255679B1 (en) 1980-09-26
SE378930B (en) 1975-09-15
GB1482788A (en) 1977-08-17
IT1027111B (en) 1978-11-20
JPS5094385A (en) 1975-07-28

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