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Identification Method of AC Interference Corrosion Risk of Pipeline |
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DOI:10.7643/issn.1672-9242.2023.03.017 |
KeyWord:safety AC interference corrosion corrosion risk assessment GRA FAHP pipeline |
Author | Institution |
MENG Xiang-yan |
Hebei Oil and Gas Transport Branch, Beijing Pipeline Co., Ltd., State Pipe Network Group,Hebei Qinhuangdao , China |
LI lei |
Hebei Oil and Gas Transport Branch, Beijing Pipeline Co., Ltd., State Pipe Network Group,Hebei Qinhuangdao , China |
LI Xiang-qi |
Hebei Oil and Gas Transport Branch, Beijing Pipeline Co., Ltd., State Pipe Network Group,Hebei Qinhuangdao , China |
MEI An |
Hebei Oil and Gas Transport Branch, Beijing Pipeline Co., Ltd., State Pipe Network Group,Hebei Qinhuangdao , China |
SUN Da-ming |
Hebei Oil and Gas Transport Branch, Beijing Pipeline Co., Ltd., State Pipe Network Group,Hebei Qinhuangdao , China |
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Abstract: |
The work aims to put forward a method for AC interference corrosion risk assessment. According to field test parameters, physical and chemical property parameters of soil and corrosion test results, GRA and FAHP were used to combine the soil environment and the cathodic protection state along the oil and gas pipelines with the corrosion rate of AC interference. The contribution weight of each key factor affecting AC interference corrosion was determined. Referring to the current standards of soil corrosivity and AC interference assessment and comprehensively considering soil corrosivity, AC interference current density, damaged area of coating and operation life, an AC interference corrosion risk identification method integrating AC interference and soil corrosivity assessment was established. Its application on site shows that the assessment results of this method are consistent with the internal detection results of pipelines. |
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