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首页> 外文会议>Materials science amp; technology 2011 conference amp; exhibition >Developing Welding Procedure to Sleeve Repair Internally Coated Fusion Bonded Epoxy (FBE) Water Lines
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Developing Welding Procedure to Sleeve Repair Internally Coated Fusion Bonded Epoxy (FBE) Water Lines

机译：开发焊接程序以修补内部涂覆的熔融粘结环氧树脂（FBE）水管线的套管

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摘要

The main purpose of this study is to develop an appropriate welding pr℃edure for therninstallation of full encirclement repair sleeves on in-service, internally coated water lines. Thernnew proposed welding pr℃edure can be effectively used to sleeve repair internally coatedrnFusion Bonded Epoxy (FBE) water line with no harm on the internal coating. Any possiblerndamage of FBE can lead to frequent leaks. Prevention of coating damage will increase thernreliability of the supply/injection water system. The cost saving will be observed in increasingrnthe remaining life of the sleeved girth welds and defective trunk lines. In particular, fullrnencirclement sleeve repair is well known repair method and its effect on internal coating hasrnnever been evaluated. To come up with the optimum combined welding parameters, anrnexperiment has been conducted. Multiple weld passes were applied circumferentially andrnlongitudinally to weld sleeve on in-service API 5L X60 pipelines of 12” diameter X 0.375”rnthickness. This experiment is carried out on coated test spools with internal pressure of 185 psigrn(12.75 bar) and raw water temperature of 180 oF (82 ℃). From the actual observation of all casesrnperformed, a specific and safe sleeve repair pr℃edure is addressed in this paper.
机译：这项研究的主要目的是开发一种合适的焊接方法，以便在使用中的内部涂层的输水管线上安装全包围式修理套管。新提议的焊接工艺可有效地用于衬套修补内部涂覆的熔凝环氧（FBE）水管线，而对内部涂层无害。 FBE的任何可能损坏都可能导致频繁泄漏。防止涂层损坏将提高供水/注水系统的可靠性。通过增加带套的环缝焊缝和有缺陷的干线的剩余寿命，可以节省成本。特别地，全包围套筒修复是众所周知的修复方法，并且从未评估过其对内部涂层的影响。为了提出最佳的组合焊接参数，进行了实验。在使用中的API 5L X60管道上，沿直径12英寸X厚度0.375英寸，多次沿周向和纵向施加焊缝。该实验是在内部压力为185 psigrn（12.75 bar），原水温度为180 oF（82℃）的涂覆测试线轴上进行的。通过对所有病例的实际观察，本文提出了一种专门，安全的袖套修复方法。

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