Oily business

Work in progress at the alternator of unit EC 4.
Here the maintenance crew is working at the coupling between the main shaft and the so-called lube oil generator, a small alternator that drives the main lube oil pump when the unit is at 3000 rpm. Now: while the shaft keeps turning slowly (1 rev. per minute to let the steamturbine cool down equally) the coupling bolts have to be removed. Prior to that we had to stop the auxiliary lube oil pump in order to lift the cover of the coupling, redirect a couple of lube oil nozzles (let them point downwards) and start the pump again.

Better in LARGE....

Here is an overview of the spot.