华能玉环电厂共装4台1 GW超超临界燃煤发电机组, 主蒸汽管道选用P92钢材。1、2号机组于2006年底投产发电, 已经安全、稳定运行超过3万h。2010年电厂利用机组检修, 结合工程安装阶段暴露的问题, 对主蒸汽管道P92钢母材、弯管、焊缝运行后的金相、硬度及蠕变等项目进行检测评估和性能分析, 结果表明: 玉环电厂主蒸汽管道采用P92钢运行状况良好, 各项性能指标都符合设计要求。

The Yuhuan Power Plant has four 1GW ultra-supercritical coal fired generating units, and their main stream pipe is made of P92 type steel. The No.1 and 2 unit went into operation in 2006 and have worked safely and steadily over 30 thousand hours by now. Taking the advantage of units' overhaul in 2010, the plant checked the main steam pipe and made the evaluation and analysis of its base steel material, bent pipe, metallographic phase after welding, rigidity and creep. The result shows its operating condition was good and all performance indicators satisfied design requirement.