1. Casing Gen DE axial recorded at different speeds and at load
At 1450 rpm of generator 2X decreased and 3X started increasing,
At 1500 rpm 3X: 4.7 mm/sec
2 MW load 3X: 8.15 mm/sec
5 MW load 3X: 8.61 mm/sec
10 MW load 3X: 12.6 mm/sec
This phenomena observed after providing correction mass on the Gen DE side 3X
Turbine speed 1X 4X 2X
10 MW
5 MW
2 MW
1500 rpm
1450 rpm
1400 rpm
1350 rpm
1300 rpm
1250 rpm

2. Horizontal Vertical Axial
Casing vibrations recorded on GB LSS DE at 10 MW load
Horizontal
Turbine speed 5775 rpm 3X
Vertical
Axial

3. Horizontal Vertical Axial
Casing vibrations recorded on GB LSS NDE at 10 MW load
Horizontal
Turbine speed 5775 rpm 3X
Vertical
Axial