Tritium activity on-line monitoring in the PIK reactor water coolants by using flow-through radiometer WILMA
The project of the PIK reactor (NRC KI - PNPI) provides continuous remote control of heavy water moderator coolant. For this purpose, an automatic system for the flow analysis of heavy water (ASFA HW) has been developed. Flow-through radiometer was included in to this system for tritium activitymonitoring. In this paper, it is proposed to use LabLogic Wilma radiometer with solid scintillator cell. The first tests results of the flow-through radiometer Wilma are presented. The basic metrological characteristics of the device are established. Comparative measurementswere made by using heavy water control samples. Calibration of the instrument was carried out. It has been established that the 3H recording efficiency for Wilma with solid scintillator cell is at least 9%. Obtained results show the applicability of Wilma to the tritium automatic control system.