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
              
AuthorInstitution
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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