JPS5687678A - Electric corrosion preventing method of pipe inside wall - Google Patents
Electric corrosion preventing method of pipe inside wallInfo
- Publication number
- JPS5687678A JPS5687678A JP16380279A JP16380279A JPS5687678A JP S5687678 A JPS5687678 A JP S5687678A JP 16380279 A JP16380279 A JP 16380279A JP 16380279 A JP16380279 A JP 16380279A JP S5687678 A JPS5687678 A JP S5687678A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- rope
- pig
- inside wall
- force
- 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
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
PURPOSE: To apply electric corrosion prevention easily and surely to the inside wall of an existing long pipe as well by force-feeding a pig into the pipe, disposing a guide rope into the pipe and further disposing an anode wire into the pipe by using this guide rope.
CONSTITUTION: A pig 3 is force-fed by force-feeding water into a pipe 1, to remove the scale 2 having stuck on the inside wall of the pipe thereby cleaning the pipe 1. After the completion of the cleaning of this pipe 1, a guide rope 4 is mounted to the pig 3, and the pig 3 is force-fed into the pipe 1 in the manner similar to the above, whereby the rope 4 is disposed into the pipe 1. Thence, an anode wire 5 including Zn, Al, Mg alloy, etc. is fixed to the rope 4, and while the rope 4 is being pulled out, the anode wire 5 is disposed in the pipe 1. Electric corrosion prevention is carried out by flowing corrosion-proof current of 80mA/m2 to this anode wire 5 in the case of the pipe 1 in which, for example, sea water is flowed, and that of 50mA/m2 in the case of the pipe 1 in which industrial water is flowed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16380279A JPS5687678A (en) | 1979-12-17 | 1979-12-17 | Electric corrosion preventing method of pipe inside wall |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16380279A JPS5687678A (en) | 1979-12-17 | 1979-12-17 | Electric corrosion preventing method of pipe inside wall |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5687678A true JPS5687678A (en) | 1981-07-16 |
Family
ID=15780973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16380279A Pending JPS5687678A (en) | 1979-12-17 | 1979-12-17 | Electric corrosion preventing method of pipe inside wall |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687678A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10744543B2 (en) | 2017-11-16 | 2020-08-18 | Saudi Arabian Oil Company | Apparatus and method for in-situ cathodic protection of piggable water pipelines |
-
1979
- 1979-12-17 JP JP16380279A patent/JPS5687678A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10744543B2 (en) | 2017-11-16 | 2020-08-18 | Saudi Arabian Oil Company | Apparatus and method for in-situ cathodic protection of piggable water pipelines |
US11072005B2 (en) | 2017-11-16 | 2021-07-27 | Saudi Arabian Oil Company | Apparatus and method for in-situ cathodic protection of piggable water pipelines |
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