An unlimited backup water supply, essential raw cooling water system (or called service water system) is supplied to the auxiliary feedwater system.

另一路的备用水来自原水系统(或称为厂用水)，当需要时可以不间断地向辅助给水系统供水。

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Since the essential raw cooling water system supplies poor quality water, it is not used except in emergency when the condensate supply is unavailable.

由于原水系统的水质得不到保证，除非在凝结水不可用的紧急情况下才使用。

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The Raw Cooling Water system is non-essential system which is provides for removal of heat from turbine building loads, as well as some non-essential loads in the auxiliary building.

非重要厂用水系统是非安全系统，用于汽机厂房和辅助厂房内非安全负荷的热量导出。

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