JPS6429794A - Fuel assembly - Google Patents

Fuel assembly

Info

Publication number
JPS6429794A
JPS6429794A JP62186410A JP18641087A JPS6429794A JP S6429794 A JPS6429794 A JP S6429794A JP 62186410 A JP62186410 A JP 62186410A JP 18641087 A JP18641087 A JP 18641087A JP S6429794 A JPS6429794 A JP S6429794A
Authority
JP
Japan
Prior art keywords
fuel rods
small units
centers
distance
adjacent
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.)
Pending
Application number
JP62186410A
Other languages
Japanese (ja)
Inventor
Kiyoshi Ueda
Koichi Sakurada
Takeshi Nakajima
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.)
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
Original Assignee
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
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 Corp, Nippon Atomic Industry Group Co Ltd filed Critical Toshiba Corp
Priority to JP62186410A priority Critical patent/JPS6429794A/en
Publication of JPS6429794A publication Critical patent/JPS6429794A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

PURPOSE:To increase the effective multiplication constant at the time of operation so that the dealing with higher burnup is enabled and the deterioration in thermal characteristic is suppressed by setting the distance between the centers of fuel rods in adjacent small units larger than the distance between the centers of the fuel rods adjacent to each other within the small units. CONSTITUTION:The small unit 14 is constituted by setting the distance between the centers of the fuel rods 13 constant and bundling a small number of the fuel rods. Plural sets of such small units 14 are so disposed that the distance L1 between the centers of the fuel rods 13 belonging to the respectively different small units 14 and adjacent to each other is larger than the distance L2 between the centers of the fuel rods 13 adjacent to each other within the small units 14. A large water rod 15 having the diameter larger than the fuel rods 13 is disposed near the center of the space formed by these small units 14 and a flow control material F is disposed into the gap formed of the large water rod 15 and the fuel rods 13 in the corner parts of the small units 14 in such a manner as to have the axial center on a straight line connecting the center of the large water rod 15 and the bundle corners. The flow of coolant is thereby uniformized and the deterioration in the thermal characteristic is suppressed. In addition, the margin for reactor shut-down and the moderator density reactivity coefft. are improved.
JP62186410A 1987-07-24 1987-07-24 Fuel assembly Pending JPS6429794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62186410A JPS6429794A (en) 1987-07-24 1987-07-24 Fuel assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62186410A JPS6429794A (en) 1987-07-24 1987-07-24 Fuel assembly

Publications (1)

Publication Number Publication Date
JPS6429794A true JPS6429794A (en) 1989-01-31

Family

ID=16187929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62186410A Pending JPS6429794A (en) 1987-07-24 1987-07-24 Fuel assembly

Country Status (1)

Country Link
JP (1) JPS6429794A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320553A (en) * 1991-06-11 1994-06-14 Sumitomo Wiring Systems, Ltd. Bulb socket and terminal installed thereon
US5875224A (en) * 1997-09-02 1999-02-23 General Electric Company Swirler attachment for a spacer of a nuclear fuel bundle
US6765979B1 (en) * 1996-04-01 2004-07-20 General Electric Company Fluid separation device for vent volumes of nuclear fuel bundles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320553A (en) * 1991-06-11 1994-06-14 Sumitomo Wiring Systems, Ltd. Bulb socket and terminal installed thereon
US5411412A (en) * 1991-06-11 1995-05-02 Sumitomo Wiring Systems, Ltd. Bulb socket and terminal installed thereon
US6765979B1 (en) * 1996-04-01 2004-07-20 General Electric Company Fluid separation device for vent volumes of nuclear fuel bundles
US5875224A (en) * 1997-09-02 1999-02-23 General Electric Company Swirler attachment for a spacer of a nuclear fuel bundle

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