FR2097938A5 - Detection of leaks - in dangerous surroundings using noise level - Google Patents

Detection of leaks - in dangerous surroundings using noise level

Info

Publication number
FR2097938A5
FR2097938A5 FR7121850A FR7121850A FR2097938A5 FR 2097938 A5 FR2097938 A5 FR 2097938A5 FR 7121850 A FR7121850 A FR 7121850A FR 7121850 A FR7121850 A FR 7121850A FR 2097938 A5 FR2097938 A5 FR 2097938A5
Authority
FR
France
Prior art keywords
leaks
reactor
microphone
detection
transmitted
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.)
Expired
Application number
FR7121850A
Other languages
French (fr)
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.)
General Electric Canada Co
Original Assignee
Canadian General Electric Co Ltd
General Electric Canada Co
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 Canadian General Electric Co Ltd, General Electric Canada Co filed Critical Canadian General Electric Co Ltd
Application granted granted Critical
Publication of FR2097938A5 publication Critical patent/FR2097938A5/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/002—Detection of leaks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

Leaks of heavy water from the cooling system of a nuclear reactor vaporise immediately and so are invisible, but they transmit an ultrasonic noise. This is picked up by a wide angle sound collector, fixed vertically to the end face of the reactor. It has several reflectors, fixed at an angle relative to each other, and is long and thin. Neutrons and gamma rays are transmitted or reflected out of the system, so that only the sound wave travels down a tube (being reflected twice more, through 90 degrees) to the microphone. This is therefore protected from the dangerous radiation and high temp. at the reactor surface. A signal is transmitted from the microphone to a logarithmic amplifier, which traces the wave and so indicates where the leaks are and roughly how large.
FR7121850A 1970-06-16 1971-06-16 Detection of leaks - in dangerous surroundings using noise level Expired FR2097938A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA085578A CA933646A (en) 1970-06-16 1970-06-16 Ultrasonic leak detection

Publications (1)

Publication Number Publication Date
FR2097938A5 true FR2097938A5 (en) 1972-03-03

Family

ID=4087020

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7121850A Expired FR2097938A5 (en) 1970-06-16 1971-06-16 Detection of leaks - in dangerous surroundings using noise level

Country Status (2)

Country Link
CA (1) CA933646A (en)
FR (1) FR2097938A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539507A1 (en) * 1983-01-13 1984-07-20 Electricite De France Method and device for locating a leak from a tubular heat exchanger
CN101676703B (en) * 2008-09-18 2014-05-07 韩国水力原子力株式会社 Apparatus for detecting leakage from channel closure plug for fuel channel in heavy water reactor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR820001828B1 (en) * 1977-12-06 1982-10-12 에이. 엠. 케네디 2세 Acoustic waveguides for sensing and locating corona dischages
US4158169A (en) * 1977-12-06 1979-06-12 Westinghouse Electric Corp. Corona testing apparatus including acoustic waveguides for transmitting acoustic emissions from electrical apparatus
US4158168A (en) * 1977-12-06 1979-06-12 Westinghouse Electric Corp. Acoustic waveguides for sensing and locating corona discharges

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539507A1 (en) * 1983-01-13 1984-07-20 Electricite De France Method and device for locating a leak from a tubular heat exchanger
CN101676703B (en) * 2008-09-18 2014-05-07 韩国水力原子力株式会社 Apparatus for detecting leakage from channel closure plug for fuel channel in heavy water reactor

Also Published As

Publication number Publication date
CA933646A (en) 1973-09-11

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Legal Events

Date Code Title Description
ST Notification of lapse