摘要
为了控制系统设备和结构材料的腐蚀,核电厂一回路和二回路冷却剂系统均维持弱碱还原性水化学环境.联氨为一回路和二回路主要的化学添加剂,因其还原性,主要用来除氧、钝化、冲洗、缓蚀、事故后除碘等.本文介绍了核电厂中联氨的主要用途,并分别就一回路除氧、AVT(R)除氧、二回路冲洗钝化、蒸汽发生器湿保养、事故后除碘等展开讨论,最后针对联氨应用中存在的问题给出建议.
Abstract
In order to control the corrosion of system equipment and structural materials,the primary and secondary circuits of the nuclear power plant maintain weak alkaline reducing water chemistry conditions.Hydrazine is a bulk chemical reagent to be added to both the primary and secondary circuits.Because of its reducibility,it is mainly used for deoxidize,passivation,flushing,accident iodine removal,etc.In this paper,the main uses of hydrazine in nuclear power are summarized,and the primary deoxidize,AVT(R)deoxidize,secondary flushing and passivation,steam generator maintenance,and accident iodine removal are discussed respectively.Finally,some suggestions on the current application of hydrazine are given.
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