JPS5574436A - Detecting method for leakage of submarine pipe-line - Google Patents
Detecting method for leakage of submarine pipe-lineInfo
- Publication number
- JPS5574436A JPS5574436A JP14663878A JP14663878A JPS5574436A JP S5574436 A JPS5574436 A JP S5574436A JP 14663878 A JP14663878 A JP 14663878A JP 14663878 A JP14663878 A JP 14663878A JP S5574436 A JPS5574436 A JP S5574436A
- Authority
- JP
- Japan
- Prior art keywords
- line
- seawater
- pipe
- valve
- detector
- 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.)
- Pending
Links
Abstract
PURPOSE: To detect the defect portions of a submarine pipe-line easily and positively, by mounting a seawater detector at the outlet side of the transport pipe-line of petroleum and gas laid on the sea bottom, and by lowering the pressure inside of the pipe-line at the inlet side.
CONSTITUTION: A gate or a valve 4 is mounted to the fist station 1 at the inlet side of a submarine pipe-line 3, and a seawater detector 5 is installed to the second station 2 at the outlet side in a communication shape. When the pressure in the pipe-line 3 is lowered for a fixed time by closing the valve 4, seawater flows into the pipe-line from a defect portion D if there is the defect portion. When letting gas and petroleum flow by opening the valve 4, flowing-in seawater also flows together and is detected by means of a seawater detector 5 at the outlet side. When measuring time until the seawater is detected after opening the valve, a location of the defect portion D is grasped. The location of the defect portion D is searched by inserting a seawater detector 7 into the pipe-line 3 in order to accurately detect the position of the seawater leak portion.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14663878A JPS5574436A (en) | 1978-11-29 | 1978-11-29 | Detecting method for leakage of submarine pipe-line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14663878A JPS5574436A (en) | 1978-11-29 | 1978-11-29 | Detecting method for leakage of submarine pipe-line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5574436A true JPS5574436A (en) | 1980-06-05 |
Family
ID=15412243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14663878A Pending JPS5574436A (en) | 1978-11-29 | 1978-11-29 | Detecting method for leakage of submarine pipe-line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5574436A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4344319A (en) * | 1980-03-07 | 1982-08-17 | Hancock Dane R | Pipe joint sealed test method |
US5739420A (en) * | 1996-09-18 | 1998-04-14 | Peterson; Roger | Ground water infiltration detection system |
-
1978
- 1978-11-29 JP JP14663878A patent/JPS5574436A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4344319A (en) * | 1980-03-07 | 1982-08-17 | Hancock Dane R | Pipe joint sealed test method |
US5739420A (en) * | 1996-09-18 | 1998-04-14 | Peterson; Roger | Ground water infiltration detection system |
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