乏燃料大厅低温报警频发的原因分析及防止生凝露的应对措施

Analysis of the causes of the spent fuel hall low temperature alarm and measures to prevent the occurrence of condensation

秦二厂1号机组乏燃料大厅长期触发低温报警,给系统运行造成了一定的困扰。为分析该报警产生的原因,本文通过对DVK(燃料厂房通风系统)和SES(厂用冷热水系统)两个相关系统的设计参数与实际参数的对比,得出主要是因为DVK进风量小于设计值。并通过对凝露原理的分析,最终得出DVK系统停运工况是乏燃料大厅墙内壁产生凝露的主要成因。

Spent fuel hall often trigger temperature alarm,caused some trouble to the operation of the system. In order to analyze the causes of the alarm, comparison of design parameters and the actual parameters of DVK（Fuel building ventilation system） and SES（Cold and hot water system）,mainly because the DVK quantity is less than the design value. Analysis on the condensation principle, finally DVK system outage conditions are the main causes of spent fuel hall wall dewing.