The serious corrosion problem at low temperature could be found in atmospheric-vacuum distillation unit, especially in the atmosphere overhead condenser.

常减压装置存在较为严重的低温位腐蚀问题，尤其是常压塔顶冷凝器腐蚀问题更为严重。

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Low vacuum in condenser has always been paid attention to during the course of units' operation in power station.

凝汽器真空偏低一直是电厂机组运行中人们普遍关注的问题。

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