JPS6488296A - Effective multiplication measuring method and device of fuel assembly - Google Patents

Effective multiplication measuring method and device of fuel assembly

Info

Publication number
JPS6488296A
JPS6488296A JP62245982A JP24598287A JPS6488296A JP S6488296 A JPS6488296 A JP S6488296A JP 62245982 A JP62245982 A JP 62245982A JP 24598287 A JP24598287 A JP 24598287A JP S6488296 A JPS6488296 A JP S6488296A
Authority
JP
Japan
Prior art keywords
fuel assembly
detector
distance
absorbing plate
thermal neutron
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.)
Granted
Application number
JP62245982A
Other languages
Japanese (ja)
Other versions
JP2504485B2 (en
Inventor
Kiyoshi Ueda
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 JP62245982A priority Critical patent/JP2504485B2/en
Publication of JPS6488296A publication Critical patent/JPS6488296A/en
Application granted granted Critical
Publication of JP2504485B2 publication Critical patent/JP2504485B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

  • Analysing Materials By The Use Of Radiation (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To lessen the possibility in which measuring errors are produced with facilitated maintenance and work efficiency being heightened by measuring a neutron absorber arranged between a fuel assembly and a thermal neutron detector by approaching and separating the fuel assembly. CONSTITUTION:A thermal neutron detector 2 is arranged at a fixed interval (preferably 10mm or more) in the side of a fuel assembly 1 arranged in water. Further, a thermal neutron absorbing plate 3 is arranged between the fuel assembly 1 and the detector 2. An absorbing plate 3 is measured by the detector 2 with the distance X1 from the surface of the fuel assembly 1 being approached and the distance X2 being separated. The distance X1 is set within about 1cm and the distance X2 is set at 3-5cm. In the case where the absorbing plate 3 is separated from the fuel assembly 1 and approaches the detector 2, the distance between the surface of the absorbing plate 3 and the detector 2 is 3cm or more, preferably 5cm or more. When the detector 2 is arranged so as to set the distance c up to thermal neutron dispersion distance, neutron counting ratio is overestimated and therefore effective multiplication rate is underestimated.
JP62245982A 1987-09-30 1987-09-30 Method and device for measuring effective multiplication factor of fuel assembly Expired - Lifetime JP2504485B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62245982A JP2504485B2 (en) 1987-09-30 1987-09-30 Method and device for measuring effective multiplication factor of fuel assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62245982A JP2504485B2 (en) 1987-09-30 1987-09-30 Method and device for measuring effective multiplication factor of fuel assembly

Publications (2)

Publication Number Publication Date
JPS6488296A true JPS6488296A (en) 1989-04-03
JP2504485B2 JP2504485B2 (en) 1996-06-05

Family

ID=17141716

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62245982A Expired - Lifetime JP2504485B2 (en) 1987-09-30 1987-09-30 Method and device for measuring effective multiplication factor of fuel assembly

Country Status (1)

Country Link
JP (1) JP2504485B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002236194A (en) * 2001-02-08 2002-08-23 Toshiba Corp Method and device for evaluating burn-up
JP2014137259A (en) * 2013-01-16 2014-07-28 Toshiba Corp Subcriticality measuring device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121195A (en) * 1979-03-13 1980-09-18 Nippon Atomic Ind Group Co Boiling water reactor
JPS63275998A (en) * 1987-05-08 1988-11-14 Nippon Atom Ind Group Co Ltd Method and apparatus for measuring effective magnification constant of fuel assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121195A (en) * 1979-03-13 1980-09-18 Nippon Atomic Ind Group Co Boiling water reactor
JPS63275998A (en) * 1987-05-08 1988-11-14 Nippon Atom Ind Group Co Ltd Method and apparatus for measuring effective magnification constant of fuel assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002236194A (en) * 2001-02-08 2002-08-23 Toshiba Corp Method and device for evaluating burn-up
JP2014137259A (en) * 2013-01-16 2014-07-28 Toshiba Corp Subcriticality measuring device

Also Published As

Publication number Publication date
JP2504485B2 (en) 1996-06-05

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