JPS56112626A - Detecting device for leakage of fluid in nuclear power plant - Google Patents

Detecting device for leakage of fluid in nuclear power plant

Info

Publication number
JPS56112626A
JPS56112626A JP1528680A JP1528680A JPS56112626A JP S56112626 A JPS56112626 A JP S56112626A JP 1528680 A JP1528680 A JP 1528680A JP 1528680 A JP1528680 A JP 1528680A JP S56112626 A JPS56112626 A JP S56112626A
Authority
JP
Japan
Prior art keywords
photosignal
leakage
optical
fiber cable
received
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
JP1528680A
Other languages
Japanese (ja)
Inventor
Shinichi Nohara
Takahisa Sato
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
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 filed Critical Toshiba Corp
Priority to JP1528680A priority Critical patent/JPS56112626A/en
Publication of JPS56112626A publication Critical patent/JPS56112626A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres

Abstract

PURPOSE:To enable simple and sure detection of the place of leakage of fluid in a quantity from little to much throughout a plant by using an optical-fiber cable as a detecting element. CONSTITUTION:The optical-fiber cable 10 whose phototransmitting property is deteriorated by radioactive rays is arranged in the piping 1 and the like of the nuclear power plant and one end thereof is provided with a luminous part 20 impressing a light from a fixed light source, while the other end thereof is provided with a light-receiving part 30 receiving a photosignal impressed by the luminous part 20. And the photosignal received is sent to a discriminating device 40 and there the discrimination of the level value of the received photosignal when the deterioration of the transmitting property of the optical-fiber cable 10 continues abruptly and the discrimination of the level value of the received photosignal when the deterioration of the transmitting property continues for a long time, though it is gentle, and thereby the property goes down below a prescribed value are performed respectively, whereby the leakage of cooling material and the like inside the piping 1 is detected.
JP1528680A 1980-02-11 1980-02-11 Detecting device for leakage of fluid in nuclear power plant Pending JPS56112626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1528680A JPS56112626A (en) 1980-02-11 1980-02-11 Detecting device for leakage of fluid in nuclear power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1528680A JPS56112626A (en) 1980-02-11 1980-02-11 Detecting device for leakage of fluid in nuclear power plant

Publications (1)

Publication Number Publication Date
JPS56112626A true JPS56112626A (en) 1981-09-05

Family

ID=11884599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1528680A Pending JPS56112626A (en) 1980-02-11 1980-02-11 Detecting device for leakage of fluid in nuclear power plant

Country Status (1)

Country Link
JP (1) JPS56112626A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990132A1 (en) * 1997-06-06 2000-04-05 Texaco Development Corporation Optical detection of entrapped gas in a cooling system
US6552355B1 (en) 1997-06-06 2003-04-22 Texaco, Inc. Optical detection of entrapped gas in a cooling system
CN105841903A (en) * 2016-06-04 2016-08-10 李陶胜 Automotive piston ring light leakage detecting instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990132A1 (en) * 1997-06-06 2000-04-05 Texaco Development Corporation Optical detection of entrapped gas in a cooling system
EP0990132A4 (en) * 1997-06-06 2000-07-26 Texaco Development Corp Optical detection of entrapped gas in a cooling system
US6552355B1 (en) 1997-06-06 2003-04-22 Texaco, Inc. Optical detection of entrapped gas in a cooling system
CN105841903A (en) * 2016-06-04 2016-08-10 李陶胜 Automotive piston ring light leakage detecting instrument

Similar Documents

Publication Publication Date Title
JPS55156840A (en) Specimen detector
JPS5374424A (en) Photoelectric detection device suited for detecting focal point
ATE89663T1 (en) METHOD AND DEVICE FOR AUTOMATIC READING OF A LIQUID METER WITH A MECHANICAL COUNTER.
JPS56112626A (en) Detecting device for leakage of fluid in nuclear power plant
JPS55128179A (en) Radiant ray detector
JPS53133085A (en) Fault detector of light transmittable vessels
JPS56118623A (en) Detecting method for transparent substance
JPS53114310A (en) Paper leaf detector
JPS54100751A (en) Detection of connection of optical fibers
JPS55149874A (en) Level detector
JPS56112625A (en) Detecting device for leakage of radioactive substance
JPS52149135A (en) Size number discriminating unit for optical fibers
JPS56138217A (en) Surface position detecting method
JPS53107869A (en) Liquid fault detector
JPS5682344A (en) Detecting and informing device for light collection of solar-heat water heater
JPS55160875A (en) Coincidence detector
JPS52100090A (en) Strain measuring device for fuel channel box
JPS5377544A (en) Optical detector
JPS53123125A (en) Focal point detecting device
JPS52128163A (en) Line diameter measuring device of optical fiber
JPS568581A (en) Plastic scintillation radiation detector
JPS57156575A (en) Radiation detector and sampler
JPS5343194A (en) Detector for natrium leakage
JPS5548867A (en) Automatic detector for record size
JPS5443033A (en) Paper detecting method