Heavy maintenance on Unit 2. Items noted include: 1) a 1.0 m long crack in the weld joint of the annular plug in the place where the wicket gate bottom ring adjoins the turbine stator lower belt in the area of wicket gate 10 2) cavities up to 15 mm deep on the entrance edge of the turbine blades and up to 12 mm deep on the upper ring
Accepted for operation on April 15, 2009 with a final grade of “Good”