http://englishrussia.com/index.php/2009/09/03/the-station-repairworks
Such pieces of concrete were found far away from the explosion spot.
Repair workers drink water, lots of water.
This water was normally not flowing through the station when it was functioning in its 100% mode.
Now each this flow shows how much money they are losing each day letting the water come thru freely not doing any useful job of
generating electricity.