FR2455739A2 - Detection of leaks of liq. metal - by coded locally, electrically conductive fabric woven from refractory isolating mineral threads - Google Patents

Detection of leaks of liq. metal - by coded locally, electrically conductive fabric woven from refractory isolating mineral threads

Info

Publication number
FR2455739A2
FR2455739A2 FR7911141A FR7911141A FR2455739A2 FR 2455739 A2 FR2455739 A2 FR 2455739A2 FR 7911141 A FR7911141 A FR 7911141A FR 7911141 A FR7911141 A FR 7911141A FR 2455739 A2 FR2455739 A2 FR 2455739A2
Authority
FR
France
Prior art keywords
liq
metal
fabric
refractory
strip
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
FR7911141A
Other languages
French (fr)
Other versions
FR2455739B2 (en
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.)
Carbonisation Entreprise et Ceramique SA
Original Assignee
Carbonisation Entreprise et Ceramique SA
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
Priority claimed from FR7813979A external-priority patent/FR2425636A1/en
Application filed by Carbonisation Entreprise et Ceramique SA filed Critical Carbonisation Entreprise et Ceramique SA
Priority to FR7911141A priority Critical patent/FR2455739A2/en
Priority to IT21761/80A priority patent/IT1130350B/en
Publication of FR2455739A2 publication Critical patent/FR2455739A2/en
Application granted granted Critical
Publication of FR2455739B2 publication Critical patent/FR2455739B2/fr
Granted 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
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A fabric of mineral, refractory and electrically isolating threads in which electrically conducting wires are incorporated, is intended for use in a system for the detection of leakages of liq. metal by which it is impermeable. The fabric has at least one strip comprising several electrically conducting wires at the surface which is liable to come into contact with the liq. metal, over lengths and/or with different spacings. Defined transverse zones can thus be identified electrically relatively to each other. For pref. the zones defined by the strip of fabric are all of the same length. Each conducting wire appears regularly at the surface of the fabric which may be contacted by the leaked metal, over lengths and spacings which are equal and constant; the lengths and spacings defined by the electrically conducting wires embodied in the strip of fabric mentioned are multiples and submultiples of each other. For enclosing wholly or in part long stretches of conduits in which the liq. metal circulates. The invention utilises the impermeability of closely woven silica threads by liq. sodium to pinpoint leaks over ten metre sections.
FR7911141A 1978-05-11 1979-05-03 Detection of leaks of liq. metal - by coded locally, electrically conductive fabric woven from refractory isolating mineral threads Granted FR2455739A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7911141A FR2455739A2 (en) 1978-05-11 1979-05-03 Detection of leaks of liq. metal - by coded locally, electrically conductive fabric woven from refractory isolating mineral threads
IT21761/80A IT1130350B (en) 1979-05-03 1980-05-02 Detecting liq. metal leakages from nuclear reactor circuit components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7813979A FR2425636A1 (en) 1978-05-11 1978-05-11 Detecting liq. metal leaks along pipes in nuclear reactors - by change in resistance of wires buried in refractory insulating fabric placed around pipe
FR7911141A FR2455739A2 (en) 1978-05-11 1979-05-03 Detection of leaks of liq. metal - by coded locally, electrically conductive fabric woven from refractory isolating mineral threads

Publications (2)

Publication Number Publication Date
FR2455739A2 true FR2455739A2 (en) 1980-11-28
FR2455739B2 FR2455739B2 (en) 1982-06-11

Family

ID=26220590

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911141A Granted FR2455739A2 (en) 1978-05-11 1979-05-03 Detection of leaks of liq. metal - by coded locally, electrically conductive fabric woven from refractory isolating mineral threads

Country Status (1)

Country Link
FR (1) FR2455739A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332170A (en) * 1979-05-03 1982-06-01 Commissariat A L'energie Atomique Sub-assembly for detecting leaks of a liquid metal
US5561418A (en) * 1994-09-22 1996-10-01 United States Of America As Represented By The Secretary Of The Navy Leak detector for conductive liquid boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332170A (en) * 1979-05-03 1982-06-01 Commissariat A L'energie Atomique Sub-assembly for detecting leaks of a liquid metal
US5561418A (en) * 1994-09-22 1996-10-01 United States Of America As Represented By The Secretary Of The Navy Leak detector for conductive liquid boiler

Also Published As

Publication number Publication date
FR2455739B2 (en) 1982-06-11

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Legal Events

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TP Transmission of property