JPS5687678A - Electric corrosion preventing method of pipe inside wall - Google Patents

Electric corrosion preventing method of pipe inside wall

Info

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
Application number
JP16380279A
Other languages
Japanese (ja)
Inventor
Shizuo Sagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP16380279A priority Critical patent/JPS5687678A/en
Publication of JPS5687678A publication Critical patent/JPS5687678A/en
Pending legal-status Critical Current

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  • 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
JP16380279A 1979-12-17 1979-12-17 Electric corrosion preventing method of pipe inside wall Pending JPS5687678A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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