AOP-29 "Primary Coolant Pump Abnormal Conditions" Flashcards
1
Q
AOP-29 entry conditions
A
Any of the following alarms received during steady state conditions with associated PCP operating:
- EK-0907 “P-50A HI Temp Overload”
- EK-0908 “P-50B HI Temp Overload”
- EK-0909 “P-50C HI Temp Overload”
- EK-0910 “P-50D HI Temp Overload”
- EK-0913 “PCP Vib Alert/Mon Trouble”
- EK-0914 “PCP Vibration Danger”
- EK-0925 “P-50A Oil Level HI-LO”
- EK-0926 “P-50B Oil Level HI-LO”
- EK-0927 “P-50C Oil Level HI-LO”
- EK-0928 “P-50D Oil Level HI-LO”
- EK-0931 “P-50A Clg Water Low Flow”
- EK-0932 “P-50B Clg Water Low Flow”
- EK-0933 “P-50C Clg Water Low Flow”
- EK-0934 “P-50D Clg Water Low Flow”
- EK-0937 “P-50A Backstop Oil Low Flow”
- EK-0938 “P-50B Backstop Oil Low Flow”
- EK-0939 “P-50C Backstop Oil Low Flow”
- EK-0943 “P-50A Seal Leakage Low Flow”
- EK-0944 “P-50B Seal Leakage Low Flow”
- EK-0945 “P-50C Seal Leakage Low Flow”
- EK-0946 “P-50D Seal Leakage Low Flow”
- EK-0949 “P-50A Seal Press Off Normal”
- EK-0950 “P-50B Seal Press Off Normal”
- EK-0951 “P-50C Seal Press Off Normal”
- EK-0952 “P-50D Seal Press Off Normal”
- EK-0955 “P-50A Seal Heat Ex HI Temp Leakage HI Flow”
- EK-0956 “P-50B Seal Heat Ex HI Temp Leakage HI Flow”
- EK-0957 “P-50C Seal Heat Ex HI Temp Leakage HI Flow”
- EK-0958 “P-50D Seal Heat Ex HI Temp Leakage HI Flow”
- EK-0959 “Pri Coolant Pumps Cont Bleedoff Hdr HI Press”
- EK-0960 “Pri Coolant Pumps Cont Bleedoff Hdr HI-HI Press”
Rising activity, level, temperatures, or flow on the following may be indications of an intersystem leak from the PCS to CCW:
- RIA-0915 “CCW Rad Monitor”
- LIA-0917 “CCW Surge Tank Level”
- LIA-0920 “CCW Surge Tank Level”
- LTVR-0901 CH 10 (TIA-0960A) “P-50A Cooling Water Out Temp”
- LTVR-0901 CH 20 (TIA-0960B) “P-50B Cooling Water Out Temp”
- LTVR-0901 CH 30 (TIA-0970A) “P-50C Cooling Water Out Temp”
- LTVR-0901 CH 40 (TIA-0970B) “P-50D Cooling Water Out Temp”
- REC-C11-02 (FRA-0133) “P-50A/B Controlled Bleedoff Flow”
- REC-C11-03 (FRA-0143) “P-50C/D Controlled Bleedoff Flow”
- LTVR-0901 CH 03 (TIA-0131A) “P-50A Lower Seal Temp”
- LTVR-0901 CH 13 (TIA-0131B) “P-50B Lower Seal Temp”
- LTVR-0901 CH 23 (TIA-0131C) “P-50C Lower Seal Temp”
- LTVR-0901 CH 33 (TIA-0131D) “P-50D Lower Seal Temp”
- LTVR-0901 CH 04 (TIA-0133A) “P-50A Vapor Seal Temp”
- LTVR-0901 CH 14 (TIA-0133B) “P-50B Vapor Seal Temp”
- LTVR-0901 CH 24 (TIA-0143A) “P-50C Vapor Seal Temp”
- LTVR-0901 CH 34 (TIA-0143B) “P-50D Vapor Seal Temp”
- PR-0130A “P-50A Seal Temperature”
- PR-0130B “P-50B Seal Temperature”
- PR-0140A “P-50C Seal Temperature”
- PR-0140B “P-50D Seal Temperature”
Other indications of imminent PCP failure can include:
- Erratic or sudden change in motor current reading unless attributed to swapping between startup and station power, motor current lowering as PCS temperature rises, or starting/stopping another PCP (particularly in the same loop)
- Rapid or unexplained rise in motor bearing temperature unless attributed to upthrust temperature rising when rising PCS pressure lifts the impeller (downthrust temperature will lower simultaneously) (occurs at approx 1000 psia), or bearing temperature rise from at rest values to normal operating ranges
- A sudden drop in PCS flow, unless attributed to stopping another PCP
- Continuing rise in indicated vibration unless attributed to normal indicator fluctuation (trend the mean readings, not the peaks), or starting or stopping other PCPs
- 1 vibration monitor axis failing high and the other axis failing low
- Abnormal noises or tangible vibration changes reported by personnel near the pump
2
Q
AOP-29 automatic actions
A
NONE
3
Q
AOP-29 reactor trip criteria
A
- Loss of CCW and upper guide bearing, lower guide bearing or down thrust bearing temperature exceeds 175 F; upper thrust bearing, lower seal, or vapor seal temperature exceeds 185 F
- Any PCP vibration > 29 mils
- Imminent PCP failure corroborated by other indications
4
Q
AOP-29 equipment trip criteria
A
Trip affected PCP(s) if any reactor trip criteria is met
5
Q
AOP-29 immediate actions
A
NONE
