JPS6431090A - Fuel assembly - Google Patents

Fuel assembly

Info

Publication number
JPS6431090A
JPS6431090A JP62187296A JP18729687A JPS6431090A JP S6431090 A JPS6431090 A JP S6431090A JP 62187296 A JP62187296 A JP 62187296A JP 18729687 A JP18729687 A JP 18729687A JP S6431090 A JPS6431090 A JP S6431090A
Authority
JP
Japan
Prior art keywords
fuel rods
small units
larger
thermal neutron
smaller
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
JP62187296A
Other languages
Japanese (ja)
Inventor
Koichi Sakurada
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 JP62187296A priority Critical patent/JPS6431090A/en
Priority to SE8801198A priority patent/SE503243C2/en
Priority to DE3811134A priority patent/DE3811134C3/en
Priority to US07/176,261 priority patent/US4863680A/en
Publication of JPS6431090A publication Critical patent/JPS6431090A/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 improve reactor stop margin capable of responding to the high combustibility by arranging bundled fuel rods so that the center distance between the neighboring fuel rods belonging to different small units is larger than the distance between the center of the neighboring fuel rods in small units. CONSTITUTION:A fuel assembly 11 is formed of small units 13 of three columns and three rows by fuel rods 12, and eight sets of the small units 13 are incorporated in a square channel box. As compared with the fuel assembly 1 in which the fuel rods 3 are arranged at intervals of P0, the center distance P1 and P2 of the fuel rods 12 are larger than Pc, P0 is smaller than Pc, the ratio of the distance between the small units and the neighboring small units 13 W1 or W2 to thermal neutron diffusion length are enlarged. The smaller the density of water, the larger the thermal neutron diffusion length is, and the larger the density of water, the smaller the thermal neutron diffusion length is and so the lowering rate of thermal neutron utilization factor is small during operation and large at the time of cool temperature and stop. Therefore, during operation the effective multiplication constant of the reactor core is heightened and profitability is improved, and at the time of the cool temperature and the stop the effective multiplication is lowered and reactor stop margin can be increased.
JP62187296A 1987-04-02 1987-07-27 Fuel assembly Pending JPS6431090A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62187296A JPS6431090A (en) 1987-07-27 1987-07-27 Fuel assembly
SE8801198A SE503243C2 (en) 1987-04-02 1988-03-31 Fuel cartridge for a boiling water reactor
DE3811134A DE3811134C3 (en) 1987-04-02 1988-03-31 Fuel cartridge
US07/176,261 US4863680A (en) 1987-04-02 1988-03-31 Fuel assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62187296A JPS6431090A (en) 1987-07-27 1987-07-27 Fuel assembly

Publications (1)

Publication Number Publication Date
JPS6431090A true JPS6431090A (en) 1989-02-01

Family

ID=16203515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62187296A Pending JPS6431090A (en) 1987-04-02 1987-07-27 Fuel assembly

Country Status (1)

Country Link
JP (1) JPS6431090A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0420901U (en) * 1990-06-12 1992-02-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0420901U (en) * 1990-06-12 1992-02-21

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