长输管道防腐层大修现状分析

The Current Condition Analysis ,on major Overhaul of Corrosion protection Layer of Long Distance Pipeline

我国的输油管道,随着使用年限的增长,管道防腐层老化、管体被腐蚀,为保证管道的安全运行,必须对此类防腐层进行大修改造。文中介绍了管道防腐层的破损情况,分析了破损情况的根源,指出了管道防腐层大修中存在的问题,对今后管道防腐层的大修提出了三点要求。

Oil transporting, pipelines in our country suffer from the ageing of corrosion protection layer and the corrosionof pipe steel with the increase of service time. In order to en-sure. safety op erafian it must be done for corrosion protection layers of pipelines to repair or to. renovate,The damage conditions and cause analysis are introduced in thre paper, the probleme existing.in overhaul and three points of requirement for overhaul are also stated.