长输管道不停输防腐层大修技术

On-line Overhaul Technique of Anticorrosion Coating of Long Distance Pipeline

东河塘至轮南输油管道,经过12年的运行,钢管外石油沥青玻璃布防腐层已严重老化甚至剥离。在不停输的情况下,对输油管道防腐层大修,特别像东—轮线输油管道,地处沙漠边缘、戈壁地带,没有成熟的施工经验可以借鉴。文章根据东—轮线输油管道防腐层大修的施工实践,详细介绍了长输管道不停输防腐层大修的施工工艺和质量保证措施。

Glass cloth asphalt coating of steel pipeline in Donghetang-Lunnan Oil Pipeline has severely deteriorated (aging even peeling off) after 12 years' service. This paper presents in detail the on-line overhaul construction process of anticorrosion coating of long distance pipeline and the quality assurance measures.