摘要
集合国外行业标准和国内使用经验,对海洋石油平台管壳式换热器橇内海水系统超级双相钢管线频繁泄漏进行研究,探析冶金状态、海水温度、焊接特性、材料污染为超级双相钢在海水系统中腐蚀泄漏的主要原因.从系统工艺、冶金、焊接、运行等方面分别提出减少泄漏风险的方法,并在后续设备改造中得到良好的应用.
Abstract
Based on foreign industry standards and domestic usage experience,the frequent leakage of super duplex stainless steel pipelines in the seawater system of shell and tube heat ex-changer skid on the offshore oil platform are analyzed.It is found that metallurgical status,seawater temperature,welding characteristics,and material pollution are the main causes of corrosion leakage of super duplex steel in seawater systems.Then,some methods are proposed to reduce leakage risk from the system process,metallurgy,welding,operation,etc.,and have been well applied in subsequent equipment modifications.
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