化学示踪技术在流体交混试验中的应用

Application of chemical tracer in the intermixing test of reactor fluid

以氯化钾作为化学示踪剂结合原子吸收光谱分析技术获得含钾水钾浓度的变化规律,测求核电厂反应堆压力容器腔室内冷热流体交混程度和时间滞后影响的可能性。本法具有料液配制简便、废水无毒性、排放不污染环境、药剂费用低廉、用火焰原子吸收法测定该示踪剂的浓度变化极为方便且数据可靠等优点。

Using chemical tracer KC1 and combined with FAAS method to determine the variation regulation of potassium concentration, the situation of fluid intermixing and the influence of time - lag in the cavity of the pressure vessel for a nuclear power reactor were studied. The tracer method has many advantages over the radioisotope technique, such as simple sample preparation,non -toxic and pollution - free draining, low cost (KCl),and very convenient and reliable determination of potassium concentration by FAAS method.