PLC and SCADA for the augmented gas receiving and metering station that supplies the cement plant and its power plant.
Dangote Cement in Nigeria augmented the gas pipeline and metering station that receives natural gas and supplies the cement plant and its power plant. The station needed PLC and SCADA control from the inlet tie-in to each consumer.
Redundant PLC A and PLC B, with SCADA screens for the filter separator skid, the orifice metering skid, the line heaters, the PRF skids for the cement and power plants and the instrument gas system, plus ESD status, fire and gas alarms, event history and reports.
The overview follows the gas from the inlet tie-in through the filter separators and the orifice metering skid to heaters H-03 and H-04, then to the PRF skids for the cement plant (PRF-04A/B) and the power plant (PRF-05A/B) and the instrument gas system.
The filter separator screen shows both vessels with differential pressure, level control valves and isolation valves. The metering screen shows each orifice run with flow, metering pressure, temperature and differential pressure.
The instrument gas system takes gas from metering through dryers and supplies the separators, heaters and PRF skids.
ESD conditions sit on the overview: ESD push button, fire alarm, gas alarm and manual call points. Alarms, event history, alarm history and reports are one click from every screen.
From the commissioned system. Select an image to enlarge it.
Metering skids, flow computers and meter provers, where the measurement settles money and has to stand up to audit.
Detection, deluge valve control, sequenced fire water pumps and jockey pump pressure management to OISD-144.
Dispatch and receipt terminals on redundant PLC and SCADA, so a single failure never stops the line.
Upgrade of the dispatch terminal at the head of the Vizag to Secunderabad LPG pipeline from another PLC make to GE, in a fully redundant configuration.
PLC, SCADA and flow computer integration for a fiscal gas metering skid, executed with Nirmal Industrial Controls.
Metering automation for multi-product fuel receipt stations.
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