Safety valve

At unit EC20: a safety valve (so-called Sempell valve) in the feedwatersystem. This valve (and his four brothers) bypass the feedwaterpreheaters when a too high waterlevel in the heater occurs. That could point at a leak so the feedwaterpressure has to be lead in the bypass of the heater.

At the background: the low-pressure turbines and the generator.

Here in LARGE....