Power plants require continuous, undisturbed water supply. Maintaining water availability at the required level is a critical factor in the power plant. Water is used for cooling and in the steam-turbine circuit. For the second purpose, demineralized water is used in large amount.
PGE Bełchatów Power Plant - the largest capacity lignite (coal) combustion thermal power station in Europe and the 2nd largest fossilfuel power station in the world. Total power generation capacity = 5,420 MW. After decarbonizing and demineralization, reservoir water is then used to produce steam from boilers, powering turbines and for cooling towers. If the water pressure is too low, the entire power plant shuts down, causing a black out for 20% of Poland!
Pumps move water from the reservoir to the steam boilers and cooling towers. The One Series Safety Transmitters are applied at the pumping stations’ water intake to monitor inlet and outlet pressure and pump efficiency, vital to the operation of the plant. SFF for the transmitter is 98,8%.
With a direct connection, the One Series Safety Transmitter SRO (Safety Relay Output) overrides the basic process transmitters and DCS to directly actuate the valves to control the flow of water in an emergency, providing the safety instrumented function. The separate SRO Status signal is sent to the plant DCS for alarming.
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