There are over 400 Liquefied Natural Gas storage facilities connected in this system that aims to provide two major functions: local tank control, and remote monitoring. Most oil, fuel, or chemical tank storage units locate at hazardous areas that require constant monitoring of pressure, liquid levels, control valve position, and temperature. A SCADA-based system for real-time data collection and transmission is essential for plant and personnel safety. A PLC is installed to handle local tank control. All control & monitoring data are processed by an UNO-1172AH Intel Atom D510, 1.6 GHz computer and can be accessed by the central control room through EKI-7758F Ethernet switches.
In the remote monitoring system of local tanks, the temperature, pressure and liquid levels need to be sent to central control room.UNO-1140FH provides 8 serial communication ports and fast Ethernet interfaces. ADAM-4117 AI and ADAM-4118 thermocouple modules control pressure, liquid level and temperature data acquisition. The technicians in the central control room use Advantech WebAccess, web-based SCADA software, to view and analyze data from all of the fuel stations. WebAccess, web-based SCADA software, to view and analyze data from all of the fuel stations.