JPS6450991A - Neutron absorption element - Google Patents

Neutron absorption element

Info

Publication number
JPS6450991A
JPS6450991A JP62206532A JP20653287A JPS6450991A JP S6450991 A JPS6450991 A JP S6450991A JP 62206532 A JP62206532 A JP 62206532A JP 20653287 A JP20653287 A JP 20653287A JP S6450991 A JPS6450991 A JP S6450991A
Authority
JP
Japan
Prior art keywords
control rod
keff
reactivity
neutron absorbing
rho2
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
JP62206532A
Other languages
Japanese (ja)
Inventor
Hideyuki Hayashi
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.)
Power Reactor and Nuclear Fuel Development Corp
Original Assignee
Power Reactor and Nuclear Fuel Development Corp
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 Power Reactor and Nuclear Fuel Development Corp filed Critical Power Reactor and Nuclear Fuel Development Corp
Priority to JP62206532A priority Critical patent/JPS6450991A/en
Publication of JPS6450991A publication Critical patent/JPS6450991A/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

  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

PURPOSE:To attain a neution absorption element with a less swelling and a high reactivity value of control rod, by making a neutron absorbing material consisting of a tantalum carry another neutron absorbing material consisting of a hydrogenated zirconium. CONSTITUTION:A control rod 3 contains numerous neutron absorbing rod elements 5 in its protective tube 6. The element 5 has a constitution of thick walled tubes made of a neutron absorbing element 5 consisting of a tantalum and a neutron moderating material 8 of hydrogenated zirconium pellets filled in the tubes and thereafter the tubes are inserted into a stainless steel cladding tube 9. Therewith, a swelling is reduced significantly and also a reactivity value of a control rod increased because the hydrogenated zirconium moderates fast neutrons down to the energy region where the tantalum shows its enough absorption cross section. A reactivity value of a control rod is expressed as rho2-rho1=(k2-k1)/k2k1, where a reactivity rho: rho=(keff-1)/keff, keff: an effective multiplication factor, a reactivity rho1 before a control rod being inserted into the core: rho1(keff=k1) and a reactor reactivity rho2 after a control rod being inserted into the core: rho2(keff=k2).
JP62206532A 1987-08-21 1987-08-21 Neutron absorption element Pending JPS6450991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62206532A JPS6450991A (en) 1987-08-21 1987-08-21 Neutron absorption element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62206532A JPS6450991A (en) 1987-08-21 1987-08-21 Neutron absorption element

Publications (1)

Publication Number Publication Date
JPS6450991A true JPS6450991A (en) 1989-02-27

Family

ID=16524929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62206532A Pending JPS6450991A (en) 1987-08-21 1987-08-21 Neutron absorption element

Country Status (1)

Country Link
JP (1) JPS6450991A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937096A (en) * 1972-08-14 1974-04-06
JPS6196492A (en) * 1984-10-17 1986-05-15 動力炉・核燃料開発事業団 Control rod for nuclear reactor
JPS61124894A (en) * 1984-11-22 1986-06-12 株式会社日立製作所 Store of spent fuel and manufacture of said store
JPS61159189A (en) * 1984-12-29 1986-07-18 株式会社日立製作所 Control rod for nuclear reactor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937096A (en) * 1972-08-14 1974-04-06
JPS6196492A (en) * 1984-10-17 1986-05-15 動力炉・核燃料開発事業団 Control rod for nuclear reactor
JPS61124894A (en) * 1984-11-22 1986-06-12 株式会社日立製作所 Store of spent fuel and manufacture of said store
JPS61159189A (en) * 1984-12-29 1986-07-18 株式会社日立製作所 Control rod for nuclear reactor

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