SE9704151D0 - Nuclear reactor fuel assembly - Google Patents

Nuclear reactor fuel assembly

Info

Publication number
SE9704151D0
SE9704151D0 SE9704151A SE9704151A SE9704151D0 SE 9704151 D0 SE9704151 D0 SE 9704151D0 SE 9704151 A SE9704151 A SE 9704151A SE 9704151 A SE9704151 A SE 9704151A SE 9704151 D0 SE9704151 D0 SE 9704151D0
Authority
SE
Sweden
Prior art keywords
fuel rod
fuel
length
short length
upper edge
Prior art date
Application number
SE9704151A
Other languages
Swedish (sv)
Other versions
SE9704151L (en
Inventor
Daisuke Goto
Kazuki Hida
Akira Tanabe
Yasushi Hirano
Original Assignee
Toshiba Kk
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 Toshiba Kk filed Critical Toshiba Kk
Publication of SE9704151D0 publication Critical patent/SE9704151D0/en
Publication of SE9704151L publication Critical patent/SE9704151L/en

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
    • G21C3/326—Bundles of parallel pin-, rod-, or tube-shaped fuel elements comprising fuel elements of different composition; comprising, in addition to the fuel elements, other pin-, rod-, or tube-shaped elements, e.g. control rods, grid support rods, fertile rods, poison rods or dummy rods
    • G21C3/328—Relative disposition of the elements in the bundle lattice
    • 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

Abstract

PROBLEM TO BE SOLVED: To further improve fuel integrity by improving thermal margin and reactor shut down margin by positioning the upper edge of the effective part of a fuel rod of short length to a specific height or less of the longest effective part out of a fuel rod of long length. SOLUTION: In a fuel assembly 1, a fuel rod of long length 2, a fuel rod of short length 3, and a large-diameter water rod 6 are fixed to an upper tie plate 4 and a lower tie plate 5 as a bundle of fuel rods by bundling them in a tetragonal lattice by a spacer 8, and a bundle of fuel rods is surrounded by a channel box 7. The upper edge of the fuel rod of the fuel rod of short length 3 is located near 13/24 and the upper edge of the effective length of the fuel rod of short length 3 is located at 12/24 of the effective length of the fuel rod of long length 3. Also, eight spacers 8 are provided and a spacer gap L2 at the upper part of an area near the upper edge of the fuel rod of short length 3 is arranged shorter than a spacer gap L1 at a lower part, thus improving the marginal output characteristics of the upper part of the fuel assembly, at the same time minimizing the peak of neutron flUx while a reactor is in shut down state and improving a reactor shut down margin drastically.
SE9704151A 1996-11-14 1997-11-13 Nuclear reactor fuel assembly SE9704151L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8302630A JPH10142365A (en) 1996-11-14 1996-11-14 Fuel assembly

Publications (2)

Publication Number Publication Date
SE9704151D0 true SE9704151D0 (en) 1997-11-13
SE9704151L SE9704151L (en) 1998-05-15

Family

ID=17911302

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704151A SE9704151L (en) 1996-11-14 1997-11-13 Nuclear reactor fuel assembly

Country Status (3)

Country Link
JP (1) JPH10142365A (en)
DE (1) DE19749938A1 (en)
SE (1) SE9704151L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3253934B2 (en) * 1998-08-27 2002-02-04 株式会社東芝 Boiling water reactor
JP2002533689A (en) * 1998-12-18 2002-10-08 シーメンス アクチエンゲゼルシヤフト Fuel assemblies for boiling water reactors.
JP2012141210A (en) * 2010-12-28 2012-07-26 Global Nuclear Fuel-Japan Co Ltd Initial core of boiling water reactor
JP6670133B2 (en) * 2016-03-04 2020-03-18 日立Ｇｅニュークリア・エナジー株式会社 Fuel assemblies and reactor cores

Also Published As

Publication number Publication date
JPH10142365A (en) 1998-05-29
SE9704151L (en) 1998-05-15
DE19749938A1 (en) 1998-06-04

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