Stator Cooling Flashcards
The following alarm has annunciated in the control room. Which of the following is true?
GEN STATOR CLG WTR LO PRESS HI TEMP TRIP
A. The turbine will not automatically trip on either of these parameters. The operator must act to trip the turbine manually.
B. The turbine should have tripped simultaneously with this alarm.
C. The turbine will trip if trends worsen but no parameter trip setpoint has yet been reached.
D. The turbine will trip after a short time delay (70 seconds) if the initiating condition is not corrected.
Answer: D
When the CEN-HS-29B (Standby Stator Cooling test valve HV-29) is pressed, the:
A. standby pump will start and then automatically stop two minutes after the pushbutton is released.
B. running pump trips causing an auto-start of the standby pump.
C. standby pump starts causing an auto-trip of the running pump.
D. standby pump will start and continue to run until secured manually.
Answer: D
Stator Cooling is in a normal lineup CEN-P01 A running CEN-P01 B in standby Which one of the following will prevent starting of the standby stator cooling water pump?
A. Generator Differential Trip
B. Generator Exciter Trip
C. Generator Reverse Power Trip
D. Motor Winding HI temperature on the CEN-P01A
Answer: A
Which one of the following will generate a main turbine trip? Stator cooling water:
A. rectifier flow Low.
B. conductivity High-High.
C. rectifier temperature High-High.
D. pump discharge pressure High.
Answer: A
