Feedwater

Feedwater for the turbine

Feedwater is necessary for all of the circulatory processes in the power station. After being vaporized by circulation through the boiler, it is fed into the turbine under high pressure. If sufficient feedwater is not available, the production of electrical power comes to a standstill. That’s why measurement instrumentation is often installed redundantly in the feedwater tank. In addition, a gauge glass can be integrated in case a fault results in loss of electrical power.

Level measurement in the feedwater tank with VEGAFLEX 66

Unaffected by condensate as well as high process temperatures and pressures, VEGAFLEX 66 guarantees very high measuring certainty and reliability in the bypass. As a part of the safety instrumented system (SIS), it can also be redundantly interconnected with VEGASWING 61 up to SIL3. Safety-related implementation allows both overfill and dry run protection.

Redundant dry run protection with VEGASWING 61

To provide absolutely reliable monitoring of the minimum level in the tank, often two, or even three, VEGASWING 61 vibrating level switches are installed. As a single device it can be used as dry run protection in safety-related systems up to SIL2 – in case of redundant use up to SIL3.