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| Analysis on Application of Electric Insulation Testing of Cathodically Protected Underground Steel Pipelines |
| Received:December 07, 2020 Revised:December 29, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.04.004 |
| KeyWord:cathodic protection electric insulation, current leakage rate insulating joint current leakage current loop |
| Author | Institution |
| CHEN Zhen-hua |
Pipe China North Pipline Co.Ltd R & D Center, Langfang , China |
| CHENG Yu-kui |
Hebei Anke Engineering and Technology Co.Ltd., Shijiazhuang , China |
| GAO Jun-tao |
Hebei Anke Engineering and Technology Co.Ltd., Shijiazhuang , China |
| MAN Xiu-qing |
Hebei Anke Engineering and Technology Co.Ltd., Shijiazhuang , China |
| XIE Xiao-bo |
Northeastern Petroleum Pipeline Co.Ltd., Shenyang , China |
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| Abstract: |
| The paper based on electric insulation testing in eighty oil &gas stations and valve chests of cathodically protected buried steel pipelines to introduce the status and characteristic of electric insulation fault in Cathodic protection system, and the usability and application conditions of normal inspection methods for electric insulation troubleshooting. Depending on the actual testing data and electrical simulation model, the errors as well as the cause in some testing methods, such as potential measurement, current leakage rate measurement, have been analyzed. Moreover, the characteristic and performance of external lap, conducting medium deposition and insulation device failure, focused on these three typical electric insulation fault, the specific troubleshooting methods have been recommend, which could be useful for inspector to locate the fault quickly and accurately. |
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