AOP-29 PCP Abnormal Conditions Flashcards
1
Q
What is the purpose of AOP-29, PCP Abnormal Conditions?
A
To protect operating Primary Coolant Pumps (PCPs)
after a component failure or support system malfunction.
2
Q
What are the entry conditions of AOP-29, PCP Abnormal Conditions?
A
Alarms associated with:
- PRI COOLANT PUMP HI TEMP OVERLOAD
- PRI COOLANT PUMP VIB ALERT/MON TROUBLE
- PRI COOLANT PUMP VIBRATION DANGER
- PRI COOLANT PUMP OIL LEVEL HI-LO
- PRI COOLANT PUMP CLG WTR LO FLOW
- PRI COOLANT PUMP BACKSTOP OIL LOW FLOW
- PRI COOLANT PUMP SEAL LEAKAGE FLOW LOW
- PRI COOLANT PUMP SEAL PRESS OFF NORMAL
- PRI COOLANT PUMP SEAL HEAT EX HI TEMP LEAKAGE HI FLOW
- PRI COOLANT PUMPS CONT BLEEDOFF HDR HI PRESS
- PRI COOLANT PUMPS CONT BLEEDOFF HDR HI-HI PRESS
3
Q
What are some indications of imminent PCP failures?
A
- Erratic or sudden change in motor current reading
- Rapid or unexplained rise in motor bearing temperature
- A sudden drop in PCS flow
- Continuing rise in indicated vibration
- One vibration monitor axis failing high and the other axis failing low
- Abnormal noises or tangible vibration changes reported by personnel near the pump
4
Q
What are the reactor trip criteria of AOP-29, PCP Abnormal Conditions?
A
Loss of CCW AND:
- Any PCP bearing temperature exceeds setpoint
- Upper Guide 175F
- Lower Guide 175F
- Upper Thrust 185F
- Down Thrust 175F
- Any PCP Lower Seal temperature exceeds 185F
- Any PCP Vapor Seal temperature exceeds 185F
- Any PCP vibration is greater than 29 mils
- Imminent PCP failure corroborated by other indications
5
Q
What does a first stage seal failure look like?
A
6
Q
What does a second stage seal failure look like?
A
7
Q
What does a third stage seal failure look like?
A
8
Q
What does a failure of the 4th seal (vapor seal) look like?
A
9
Q
What do a first stage and second stage seal failure look like? What are CBO flows/temps?
A
10
Q
A
