Bypass stack of the gasturbine

The afternoon was sunny so I pictured the bypass stack of the gasturbine of unit EC 20 in a different way.
In the old days this was used only during start-up of the complete unit and as an emergency bypass when the main unit would trip.
Nowadays it is used as the normal fluegas stack for the gasturbine.

Five units on the grid now, we have to stop them all during the evening- and nightshift and they have to be started up again early in the morning (or: in the late night).

Better in LARGE....

Here from another angle: look above the boilerroom.