Hydrochemical control method for water supply of secondary loop of nuclear power plant

The invention discloses a water chemical control method for secondary loop water supply of a nuclear power plant, which comprises the following steps of: adding oxygen into a downstream pipeline of a condenser in a secondary loop system, so that the oxygen concentration in the pipeline between the condenser and a deaerator is 5-30mu g/kg; and meanwhile, the deaerator is controlled to keep the designed deaeration efficiency. According to the hydrochemical control method for the secondary loop feed water of the nuclear power plant, corrosion products of a secondary loop system of the pressurized water reactor nuclear power plant can be effectively reduced, and the purpose of reducing the corrosion products entering a steam generator is achieved. 本发明公开了一种核电厂二回路给水的水化学控制方法，包括如下步骤：向二回路系统中的凝汽器下游管线中加入氧，使凝汽器至除氧器之间的管线中的氧浓度为5～30μg/kg；同时，控制除氧器保持设计的除氧效率。本发明的核电厂二回路给水的水化学控制方法，可有效减少压水堆核电站二回路系统的腐蚀产物，达到减少进入蒸汽发生器腐蚀产物的目的。