Rust... in HDR at EC 20

The process of degrading goes on....
Four valves, belonging to the vacuumsystem of the waterboxes of the condensers.
Situated at turbine floor level.
That system was meant to maintain a slight vacuum in those boxes so the system worked with a kind of siphon, thus keeping the power required by the coolingwaterpumps as low as possible and keeping the coolingwaterflow going on.
The switch has nothing to do with it, it belongs to a small crane.
Quiet day today....

Better in LARGE...