GB1311472A - Pipe system of heat insulated pipes including means for detecting the presence of moisture - Google Patents
Pipe system of heat insulated pipes including means for detecting the presence of moistureInfo
- Publication number
- GB1311472A GB1311472A GB1311472DA GB1311472A GB 1311472 A GB1311472 A GB 1311472A GB 1311472D A GB1311472D A GB 1311472DA GB 1311472 A GB1311472 A GB 1311472A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- wire
- wires
- circuit
- constantan
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/22—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for bends
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/181—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for non-disconnectible pipe joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/188—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for branching pipes; for joining pipes to walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/15—Arrangements for the insulation of pipes or pipe systems for underground pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/163—Branch units ; Insulation forming a whole with branches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
- F16L59/20—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints for non-disconnectable joints
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Thermal Insulation (AREA)
Abstract
1311472 District heating systems E RASMUSSEN AS 18 March 1970 [18 March 1969] 14118/69 Heading F4U [Also in Divisions F2 and G1] A method of measuring the moisture content of insulating material surrounding a pipe, for example, in a subterranean district heating system, comprises measuring the electrical conductivity between two conductors adjacent the material. If the pipe is electrically conductive it may itself constitute one of the conductors. The method provides forewarning of a situation likely to cause corrosion of the pipe. As shown in Fig. 1 an iron tube 2 is surrounded by material 6 comprising polyurethane foam and an outer sheathing 4 of polyethylene. A conductor 10 is disposed in the foam 6 and forms a circuit with a battery and the tube 2 so that a measure of the conductivity may be obtained on a meter 14. At a joint between two pipes (Fig. 2, not shown) the conductor 10 is disposed between felt layers is wrapped round the pipe 2. A second conductor 20 may be disposed outside the second layer, measurements being made between 10 and 20. If the wires 10 and 20 are of constantan (high resistivity) and copper (low resistivity) respectively, the former may be utilized for general detection of a defect area, and the latter for localization thereof. In a complex pipe system comprising a number of sections and spurs joined together (Fig. 3) localization of a fault area is detected by providing a number of different tone generators 22. Heavy lines represent pipes with water flow as indicated by the arrows, and individual sections between joints and junctions are indicated by letters a ... m. Copper wires 20 are indicated by full lines and constantan wires 10 by dotted lines, and 5 tone generators 22 (A, B, C, D and E) are provided, connections being made as shown. Each tone generator (Fig. 4, not shown) comprises an oscillator element 26, an output circuit 28 and a power supply circuit 30. The positive battery terminal is connected to the pipe 2, and the negative terminal to the upper wires 20 connected in series by the coils 28. At each tone generator connection to the -ve constantan wire (dotted) is made through a resistor 38, this circuit being completed at the far end of the section and returning down the associated wire 10. This is then connected through a wire 34 to provide the negative supply for the oscillator 26, the positive supply being derived from the pipe 2 through wire 32. Each oscillator operates at a different frequency and receivers at a central station are provided which detect the various output signals flowing in the wire 20. Moisture in any section will cause a short circuit between the constantan wire and the pipe, thereby cutting off the supply to the appropriate oscillator, so that this particular frequency will not be present in the output. Alternatives suggested in the Specification include: (a) measuring wires introduced into the insulating material from an exterior insulated wire at distinct intervals; (b) the utilization of measuring wires which readily corrode and break, thereby stopping the flow of current; (c) replacing the conductive wire by a conducting coating within the outer sheath. A one-way valve may be provided in the outer sheath so that initially trapped moisture may escape when operation first starts.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1411869 | 1969-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1311472A true GB1311472A (en) | 1973-03-28 |
Family
ID=10035329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1311472D Expired GB1311472A (en) | 1969-03-18 | 1969-03-18 | Pipe system of heat insulated pipes including means for detecting the presence of moisture |
Country Status (7)
Country | Link |
---|---|
CA (1) | CA988599A (en) |
DE (2) | DE2012558C2 (en) |
DK (1) | DK156846C (en) |
FR (2) | FR2035035A1 (en) |
GB (1) | GB1311472A (en) |
NL (2) | NL7003884A (en) |
SE (3) | SE364100B (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132773A (en) * | 1982-12-23 | 1984-07-11 | Bicc Plc | Monitoring electrically presence of liquid in the thermal insulation of a pipe system |
EP0207253A1 (en) * | 1985-05-09 | 1987-01-07 | Meier-Schenk AG (Meier-Schenk SA) | Sensor for the determination of wet spots in the thermal insulation of pipes |
EP0257575A1 (en) * | 1986-08-21 | 1988-03-02 | Röro Gesellschaft für Isolier-und Fernheiztechnik mbH | Pipeline system and thermally insulated pipes , e.g. for district heating lines |
GB2201219A (en) * | 1987-02-19 | 1988-08-24 | James Wallace Pollitt | A system to detect contents release from pipes, tanks or valves |
GB2214603A (en) * | 1988-01-28 | 1989-09-06 | Junkosha Co Ltd | Insulated pipeline having a liquid leaking sensor |
GB2235535A (en) * | 1989-08-07 | 1991-03-06 | Ian Stewart | Continuous moisture detection, locating and monitoring apparatus |
EP0459973A1 (en) * | 1990-06-01 | 1991-12-04 | PIPELIFE ROHRSYSTEME GESELLSCHAFT m.b.H. | Insulated pipe and method of manufacturing the same |
WO2000045148A1 (en) * | 1999-01-26 | 2000-08-03 | Integriti Investments Ltd. | Corrosion sensors contained within the thermally insulating member of a metal pipe |
WO2005054743A1 (en) * | 2003-12-03 | 2005-06-16 | Taylor Mclaren Limited | Water ingress detection system |
EP1605247A1 (en) * | 2004-06-09 | 2005-12-14 | Markus Büchler | Measurement probe for determining the depth of corrosion attack, process for measuring the depth of corrosion attack, and use of a measurement probe |
EP2124034A1 (en) * | 2008-05-20 | 2009-11-25 | BAE Systems PLC | Corrosion sensors |
US9304056B2 (en) | 2010-09-08 | 2016-04-05 | Commisariat A L'energie Atomique Et Aux Energies Alternatives | Leak detection device, and coating intended for a fluid transport or storage member and comprising said detection device |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1455415A (en) * | 1973-03-26 | 1976-11-10 | Rasmussen As E | Insulated pipe system having means for detection of moisture in the insulation thereof |
DE2412046A1 (en) * | 1974-03-13 | 1975-09-25 | Korel Korrosionsschutz Elektro | COMPONENT WITH SEVERAL ELECTRICALLY CONDUCTIVE METALLIC AND NON-METALLIC FLAME-INJECTED AREA LADDERS |
DE2716316C3 (en) * | 1977-04-07 | 1981-10-29 | Eternit Ag, 1000 Berlin | Socket connection |
DE3110054A1 (en) * | 1981-03-16 | 1982-10-14 | G + H Montage Gmbh, 6700 Ludwigshafen | PIPELINE SYSTEM, ESPECIALLY FROM HEAT-INSULATED REMOTE HEAT PIPES |
DE3274079D1 (en) * | 1981-07-14 | 1986-12-11 | Moeller As I C | A method of establishing sealed pipe lengths of plastic pipes by joining of pipe elements, particularly district heating pipe lengths |
CA1217913A (en) * | 1982-03-05 | 1987-02-17 | Bertel Jansson | Method of insulating pipe details |
DE3242322A1 (en) * | 1982-11-16 | 1984-05-17 | Felten & Guilleaume Energietechnik GmbH, 5000 Köln | POWERFUL TERMINATION OF A FLEXIBLE DISTRICT HEATING PIPE |
DE3333542A1 (en) * | 1983-09-16 | 1985-04-11 | Rheinhold & Mahla GmbH, 8000 München | Device for indicating and locating leaks in tanks and pipelines |
SE456376B (en) * | 1983-12-08 | 1988-09-26 | Helmersson Rune | ALARM DEVICE IN ISOLATED PIPE SYSTEM |
SE8404434D0 (en) * | 1984-09-05 | 1984-09-05 | Nitto Scandinavia Ab | DEVICE FOR INDICATING WATER leaks in a pre-insulated pipeline |
SE443928B (en) * | 1984-09-06 | 1986-03-17 | Klas Jakobsson | GAS-MEDIUM CLEANING FILTER |
DK171335B1 (en) * | 1994-04-27 | 1996-09-09 | Steen Kjoelby | Plastic sleeve for assembly of adjacent casing pipe ends and their use |
DE29909553U1 (en) | 1999-06-01 | 1999-08-12 | Comfort-Sinusverteiler GmbH & Co. KG, 48493 Wettringen | Insulation cap for the thermal insulation of units in piping systems |
NL1031270C2 (en) * | 2006-03-02 | 2007-09-04 | Ecoplay Int Bv | Water pipe system with branch branch monitoring, system and method thereof. |
DE102013020645A1 (en) * | 2013-12-16 | 2015-06-18 | Karin Niss | Method for determining the moisture in the insulation of a district heating pipe |
DK178155B1 (en) * | 2014-06-16 | 2015-07-06 | Pipeteq Systems As | A process for producing a branch on a pre-insulated pipe |
DE102017131188A1 (en) * | 2017-12-22 | 2019-06-27 | KM Innopat GmbH | Corrosion protection and corrosion protection monitoring |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE171327C (en) * | ||||
US548932A (en) * | 1895-10-29 | Hose connection | ||
US2129865A (en) * | 1938-09-13 | Pipe co-vering | ||
US924262A (en) * | 1908-09-26 | 1909-06-08 | Theodore W Moll | Pipe-coupling. |
US1066214A (en) * | 1912-05-07 | 1913-07-01 | James J Mulconroy | Hose-coupling. |
US1242060A (en) * | 1914-07-29 | 1917-10-02 | Frank C Smakal | Pipe-patch. |
US1785314A (en) * | 1927-03-11 | 1930-12-16 | Sidney R Kelly | Hose mender |
US1814134A (en) * | 1928-12-28 | 1931-07-14 | Eige Abraham | Insulation casing for pipe fittings, valves and the like |
US1964123A (en) * | 1931-03-16 | 1934-06-26 | Edward W Kaiser | Pipe or like device |
US1939658A (en) * | 1932-04-18 | 1933-12-19 | Lyle W Browne | Leak lock |
US2094258A (en) * | 1936-06-30 | 1937-09-28 | Newton B Thompson | Pipe line clamp |
US2255657A (en) * | 1941-05-03 | 1941-09-09 | Freedman Hyman | Dental apparatus |
DE873924C (en) * | 1943-05-06 | 1953-04-20 | Otto Kienzle Fa | Tubular, longitudinally divided flange cap filled with insulating material |
US2613166A (en) * | 1949-03-11 | 1952-10-07 | George E Gronemeyer | Thermal insulation |
DE854299C (en) * | 1950-05-10 | 1952-11-04 | Franz Cukrowicz | Two-part insulating caps |
US2719345A (en) * | 1954-07-02 | 1955-10-04 | Walter F Riker | Tubing clamp |
US2980568A (en) * | 1956-01-12 | 1961-04-18 | Constantine A Kazmierowicz | Plastic pipe covering |
US2958546A (en) * | 1956-12-31 | 1960-11-01 | Lee Harry | Protective covering for pipes and fittings therefor |
GB962180A (en) * | 1961-09-08 | 1964-07-01 | Triangle Conduit & Cable Co In | Improvements in heat insulated pipe systems and methods |
DE1900062U (en) * | 1962-07-06 | 1964-09-03 | Ernst Keutner | SURFACE FINISH FOR HEAT, COLD OR SOUND INSULATION OF A CURVED PIPE SECTION OF A RIGID PIPE. |
GB976033A (en) * | 1963-07-04 | 1964-11-25 | Anchor Coupling Co Inc | Hose clamp coupling |
US3307590A (en) * | 1963-10-15 | 1967-03-07 | Charles R Carlson | Pipe insulation |
-
1969
- 1969-03-18 GB GB1311472D patent/GB1311472A/en not_active Expired
-
1970
- 1970-03-17 DE DE19702012558 patent/DE2012558C2/en not_active Expired
- 1970-03-17 SE SE353470A patent/SE364100B/xx unknown
- 1970-03-17 SE SE353370A patent/SE397886B/en unknown
- 1970-03-17 FR FR7009401A patent/FR2035035A1/fr active Pending
- 1970-03-17 DK DK130970A patent/DK156846C/en not_active IP Right Cessation
- 1970-03-17 FR FR7009400A patent/FR2038994A5/fr not_active Expired
- 1970-03-18 CA CA077,752A patent/CA988599A/en not_active Expired
- 1970-03-18 DE DE19702012768 patent/DE2012768A1/en not_active Ceased
- 1970-03-18 NL NL7003884A patent/NL7003884A/xx unknown
- 1970-03-18 NL NL7003885A patent/NL170184C/en not_active IP Right Cessation
-
1977
- 1977-06-03 SE SE7706514A patent/SE435104B/en not_active IP Right Cessation
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132773A (en) * | 1982-12-23 | 1984-07-11 | Bicc Plc | Monitoring electrically presence of liquid in the thermal insulation of a pipe system |
EP0207253A1 (en) * | 1985-05-09 | 1987-01-07 | Meier-Schenk AG (Meier-Schenk SA) | Sensor for the determination of wet spots in the thermal insulation of pipes |
EP0257575A1 (en) * | 1986-08-21 | 1988-03-02 | Röro Gesellschaft für Isolier-und Fernheiztechnik mbH | Pipeline system and thermally insulated pipes , e.g. for district heating lines |
GB2201219A (en) * | 1987-02-19 | 1988-08-24 | James Wallace Pollitt | A system to detect contents release from pipes, tanks or valves |
GB2214603A (en) * | 1988-01-28 | 1989-09-06 | Junkosha Co Ltd | Insulated pipeline having a liquid leaking sensor |
GB2235535A (en) * | 1989-08-07 | 1991-03-06 | Ian Stewart | Continuous moisture detection, locating and monitoring apparatus |
EP0459973A1 (en) * | 1990-06-01 | 1991-12-04 | PIPELIFE ROHRSYSTEME GESELLSCHAFT m.b.H. | Insulated pipe and method of manufacturing the same |
WO2000045148A1 (en) * | 1999-01-26 | 2000-08-03 | Integriti Investments Ltd. | Corrosion sensors contained within the thermally insulating member of a metal pipe |
GB2363201A (en) * | 1999-01-26 | 2001-12-12 | Integriti Invest Ltd | Corrosion sensors contained within the thermally insulating member of a metal pipe |
WO2005054743A1 (en) * | 2003-12-03 | 2005-06-16 | Taylor Mclaren Limited | Water ingress detection system |
US7604017B2 (en) | 2003-12-03 | 2009-10-20 | O'hara Leonard | Water ingress detection system |
EP1605247A1 (en) * | 2004-06-09 | 2005-12-14 | Markus Büchler | Measurement probe for determining the depth of corrosion attack, process for measuring the depth of corrosion attack, and use of a measurement probe |
EP2124034A1 (en) * | 2008-05-20 | 2009-11-25 | BAE Systems PLC | Corrosion sensors |
US9304056B2 (en) | 2010-09-08 | 2016-04-05 | Commisariat A L'energie Atomique Et Aux Energies Alternatives | Leak detection device, and coating intended for a fluid transport or storage member and comprising said detection device |
Also Published As
Publication number | Publication date |
---|---|
SE364100B (en) | 1974-02-11 |
DE2012558C2 (en) | 1983-09-29 |
FR2038994A5 (en) | 1971-01-08 |
SE397886B (en) | 1977-11-21 |
NL170184B (en) | 1982-05-03 |
DK156846B (en) | 1989-10-09 |
DE2012768A1 (en) | 1970-10-08 |
DE2012558A1 (en) | 1970-09-24 |
NL7003885A (en) | 1970-09-22 |
DK156846C (en) | 1990-02-26 |
NL170184C (en) | 1982-10-01 |
CA988599A (en) | 1976-05-04 |
SE435104B (en) | 1984-09-03 |
SE7706514L (en) | 1977-06-03 |
NL7003884A (en) | 1970-09-22 |
FR2035035A1 (en) | 1970-12-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |