JPS57113339A - Method for detecting oil leakage - Google Patents
Method for detecting oil leakageInfo
- Publication number
- JPS57113339A JPS57113339A JP18922480A JP18922480A JPS57113339A JP S57113339 A JPS57113339 A JP S57113339A JP 18922480 A JP18922480 A JP 18922480A JP 18922480 A JP18922480 A JP 18922480A JP S57113339 A JPS57113339 A JP S57113339A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- core
- core wires
- insulation layer
- sag
- 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
- G01M3/165—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means by means of cables or similar elongated devices, e.g. tapes
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Pipeline Systems (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE:To prevent electrolytic corrosion without need for connection work between the electrode and the cable core wire by using for the electrode a part of a core wire coated with a semiconductive layer after the insulation layer is removed therefrom. CONSTITUTION:A multi-core cable for transmission uses a cable 30 with a sag in which core wires 40 are put together by an alternately inverted twisting at a short pitch. The core wires 40 employ a conductor 400 onto which a semiconductive layer 402 and an insulation layer 404 are extruded doubly. The cable 30 thus obtained is installed underground along an oil tube 10 and different core wires 40 are drawn out with a sag sequentially at specified intervals. The core wires thus drawn out are used for electrodes 21... by removing the insulation layer 404 by a proper length. One end of the multi-core cable 30 is connected to a detector section 50.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18922480A JPS57113339A (en) | 1980-12-29 | 1980-12-29 | Method for detecting oil leakage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18922480A JPS57113339A (en) | 1980-12-29 | 1980-12-29 | Method for detecting oil leakage |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57113339A true JPS57113339A (en) | 1982-07-14 |
JPS6235612B2 JPS6235612B2 (en) | 1987-08-03 |
Family
ID=16237647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18922480A Granted JPS57113339A (en) | 1980-12-29 | 1980-12-29 | Method for detecting oil leakage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57113339A (en) |
-
1980
- 1980-12-29 JP JP18922480A patent/JPS57113339A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6235612B2 (en) | 1987-08-03 |
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