JPS5667407A - Method and apparatus for detecting abnormal state of plant - Google Patents

Method and apparatus for detecting abnormal state of plant

Info

Publication number
JPS5667407A
JPS5667407A JP14382179A JP14382179A JPS5667407A JP S5667407 A JPS5667407 A JP S5667407A JP 14382179 A JP14382179 A JP 14382179A JP 14382179 A JP14382179 A JP 14382179A JP S5667407 A JPS5667407 A JP S5667407A
Authority
JP
Japan
Prior art keywords
plant
mean value
input
abnormal state
reference value
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
JP14382179A
Other languages
Japanese (ja)
Inventor
Tomio Tsunoda
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
Tokyo Shibaura Electric Co Ltd
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, Tokyo Shibaura Electric Co Ltd, Nippon Atomic Industry Group Co Ltd filed Critical Toshiba Corp
Priority to JP14382179A priority Critical patent/JPS5667407A/en
Publication of JPS5667407A publication Critical patent/JPS5667407A/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)
  • Testing And Monitoring For Control Systems (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To make the apparatus useful for maintenance of the plant, by supervising the mean value of a plant signal, in addition to the ordinary noise analytic method, and deciding it as an abnormal state that the mean value has been turned aside from the prescribed reference value, in the atomic power plant. CONSTITUTION:Each process signal S is input to the amplifier 1 through the input device I, and an output of the amplifier is input the mean value calculating circuit 2 and also the frequency spectrum analyzer 3. And the respective outputs are input to the comparators 4 and 5, in which they are compared with the reference values R1, R2 decided by the device I, and each output is sent to the output circuit 6. This reference value R1 is a mean value mu+ or -3sigma (sigma is standard deviation) of each process signal, and the reference value R2 shows the frequency spectrum of a noise component of each process signal in case when the plant is normal. In this way, the apparatus can be made useful for maintenance of the plant by deciding it as an abnormal state that the mean value has been turned aside from the prescribed reference value.
JP14382179A 1979-11-08 1979-11-08 Method and apparatus for detecting abnormal state of plant Pending JPS5667407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14382179A JPS5667407A (en) 1979-11-08 1979-11-08 Method and apparatus for detecting abnormal state of plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14382179A JPS5667407A (en) 1979-11-08 1979-11-08 Method and apparatus for detecting abnormal state of plant

Publications (1)

Publication Number Publication Date
JPS5667407A true JPS5667407A (en) 1981-06-06

Family

ID=15347733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14382179A Pending JPS5667407A (en) 1979-11-08 1979-11-08 Method and apparatus for detecting abnormal state of plant

Country Status (1)

Country Link
JP (1) JPS5667407A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57203105A (en) * 1981-06-09 1982-12-13 Hitachi Ltd Signal monitor at periodic test
JPH04125240U (en) * 1991-04-30 1992-11-16 太陽誘電株式会社 Chip-shaped circuit component supply device
JP2004184390A (en) * 2002-05-13 2004-07-02 Mitsubishi Heavy Ind Ltd Apparatus and method for detecting state of radioactive substance vessel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57203105A (en) * 1981-06-09 1982-12-13 Hitachi Ltd Signal monitor at periodic test
JPH04125240U (en) * 1991-04-30 1992-11-16 太陽誘電株式会社 Chip-shaped circuit component supply device
JP2004184390A (en) * 2002-05-13 2004-07-02 Mitsubishi Heavy Ind Ltd Apparatus and method for detecting state of radioactive substance vessel

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