Operatio practice showed that the realization of state maintenance could save cost, reduce faults, and improve safe and and economic operation level of power plant.

运行实践表明，实现状态维修能节省成本，减少故障．提高电厂安全经济运行水平。

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In the light of heavy loss and bitter lesson from the lose efficiency of many UPS battery being less than 5 years service in Hanchuan Power Plant, its operation and maintenance method was discussed.

针对汉川电厂多组UPS电池在不到5年的使用时间里，连续失效报废所造成的巨大损失和惨痛教训，探讨了UPS蓄电池在运行和维护中的科学方法，并强调对免维电池的正确认识；

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Except for the amount of pollutants emitted during the plant construction and maintenance, the normal operation of these power facilities emits essentially no pollutants into the atmosphere.

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