The significance of on-line thickness measurement of oil refining pipeline is expounded.The key technology of project implementation is introduced from three aspects:instrument selection,principle of selecting thickness measurement point,insulation opening and maintenance method.And the effect was discussed.%阐述了炼油管道在线定点测厚的意义,从仪器的选取、测厚点选取的原则、保温开孔与维护的办法三个方面,介绍了项目实施的关键技术,并对项目实施的内容与效果进行了探讨。
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