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 threadsInfo
- 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
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.
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)
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 |
-
1979
- 1979-05-03 FR FR7911141A patent/FR2455739A2/en active Granted
Cited By (2)
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
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |