Alarm Annunciation System Development for SST-1 Cryogenics

At IPR, we have wide spread of cryogenics system facilitating to SST-1 Tokamak Machine. The cryogenics related sub-systems include 1.3 kW helium refrigerator/liquefier plant, liquid nitrogen (LN2) distribution system, integrated flow distribution and control system (IFDCS), current feeder system (CFS) and 80K booster system. These cryogenics sub-systems have their own control system consist of Programmable logic controller (PLC) and Supervisory Control and Data Acquisition (SCADA). It is essential to have centralized alarm annunciation system for immediate attention of operator in case of abnormal process parameters behaviour and emergency situation exists in any cryogenics sub-systems. Alarm annunciation application designed and developed in Wonderware SCADA. Control area network established among all cryogenics sub-system’s control nodes. OPClink gateway and FSGateway are configured for establishing communication between Alarm annunciation application and SCADA applications running on different cryogenics sub-systems control nodes. The main critical process parameters of all sub-systems are addressed and defined in Alarm annunciation SCADA application. This application runs at back end and alerts the operator by audible sound and blinking graphics in case of abnormal events. The alarm annunciation application performed satisfactory in recent SST-1 plasma experiment campaign. The features of developed applications are presented in this paper.