plant air utility drops 是个什么东东？（关于工厂气）？ although water in the air will be knocked out at the osbl compressors, there still is potential for water to collect in the header; therefore, operators will blowdown plant air utility drops before using them to supply compressed air to tools; otherwise, the plant air will be filled of water and not safe to be used when needed especially during catalyst change activities. 这段话的意思是说：尽管工厂风的总管上的水分可以通过osbl（outside of boundary limit）压缩机出口分液罐（knocked out pot）,但是在总管中仍然会有水分凝结的风险。所以操作工在降压缩空气接到相关的气动工具或者设施上前，需要将工厂风在现场吹扫排凝除去压缩空气中的凝水；否则压缩空气中会含有大量的凝结水并且这对像进行更换催化剂类等的特殊操作会造成不安全。查看更多
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