40AO-9ZZ27 Significant Turbine Building Oil Leaks

Question 1

During 40AO-9ZZ27 Significant Turbine Building Oil Leaks, what are the mitigating actions for MTLO/ Seal Oil Leak?

Answer 1

• Rapid Shutdown - small/ moderate leak
• Turbine Trip - Large leak/ rupture
• Reactor Trip - Large leak/ rupture with fire

Question 2

During 40AO-9ZZ27 Significant Turbine Building Oil Leaks, when do you break vacuum and why?

Answer 2

• Main Turbine < 1200 rpm

- prevents damage to Low Press Turb blades

Question 3

During 40AO-9ZZ27 Significant Turbine Building Oil Leaks, what actions are required for an EHC leak?

Answer 3

• Turbine trip or rapid down power

- Turbine trip if EHC lo-lo alarm