DC Interference Testing and Mitigation of New Electrically Isolated Pipelines Installed within Congested Existing Pipeline Network
- 作者：Saleh Al-SulaimanHasan SabriAmer JaraghRenish Rahim
- 会议时间：2013-09-01
- 关键词：Cathodic protection ; commissioning ; interference ; stray current ; pipelines
- 作者单位：Inspection and Corrosion Team,Kuwait Oil Company,Ahmadi,Kuwait
- 母体文献：2013中国国际管道会议暨第一届中国管道与储罐腐蚀与防护学术交流会论文集
- 会议名称：2013中国国际管道会议暨第一届中国管道与储罐腐蚀与防护学术交流会
- 会议地点：廊坊
- 主办单位：中国腐蚀与防护学会
- 语种：chi
摘要
Congested existing buried piping or pipeline networks "within" or "close to" old plant facilities such as, gathering centers, booster stations, pipeline manifolds, etc.are normally electrically continuous to each other and are protected by common impressed current cathodic protection (CP) systems.However, new Pipeline/piping sections installed at such congested network are sometimes required to be electrically isolated from existing pipelines and are provided with separate impressed current CP systems.This paper discusses, methods implemented in design, installation, testing and commissioning of CP system of electrically isolated new pipeline sections, with special emphasis on DC stray current interference due to existing anode ground beds and existing pipelines crossing/parallelism.Case studies are included, with discussions on results of interference testing, interference mitigation, post interference mitigation surveys and protective potential surveys.