Abstract
As special equipment, long-distance pipeline is widely used in petroleum, chemistry and other fields. However, with the extension of its running time, some problems have arisen with parts of the pipeline. The detection and repair technology is the foundation for assurance of the safe operation of pipelines; therefore, in order to avoid or reduce pipeline accidents as well as to protect people's lives and property safety, periodic detection and designed reasonable repair of the pipeline has naturally become an important part of pipeline industry today. Several commonly used inspection techniques of pipeline were introduced in this paper and related repair measures were described in view of problems emerging during the service life of long-distance pipeline in the practical engineering.
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