40AO-9ZZ23 Loss of SFP Level or Cooling Flashcards
What are the entry conditions for 40AO-9ZZ23 Loss of SFP LEVEL?
- Lo-Lo level alarm (<137’)
- Visual level lowering
- Fuel Bldg sump
- Continuous discharge from liner drain
- FBEVAS or CREFAS
What are the entry conditions for 40AO-9ZZ23 Loss of SFP COOLING?
- Hi temp alarm
- PC low disch press alarm
- PC pump trip
- Loss of power to pumps (L31/L36)
What is the EXIT condition for 40AO-9ZZ23 Loss of SFP COOLING
- < 145°F
- PC cooling restored
What is the NORMAL level in the SFP
- 138’ 1”
What is the LCO limit in the SFP? (3.7.14)
- 23’ above F/A
- 137’4”
What is the SFP Lo-Lo level?
- 137’
At what level in the SFP does the PC cooling pump loose suction?
- 131’ 10”
What is the lowest level in the SFP that could occur due to a pipe break/ valve misalignment?
130’ 2”
What are the SFP temperature limits/alarms?
- High - 125
- Hi-Hi - 145
What is the Design basis time to boil in the SFP?
- 16.7 hours - M1-4
- 3.46 hours - full core offload
What are the mitigating actions for Loss of SFP level or cooling?
- Close roll up door
- place F/A in safe position
- Evacuate non-essential in Fuel Bldg
- RP monitor Rads
- Actuate FEBEVAS and CREFAS for Rad levels
What are the BORATED m/u sources for the SFP
- BAMP from RWT
- BAMP through Batch tank eductor
- Gravity from RWT
- CSP/ LPSI from RWT
What are the UNborated m/u sources for the SFP
- DWST
- RMT
- RMWP from RMWT
- CST
When should an UNborated m/u source NOT be used for SFP m/u?
- SFP < 3000 ppm boron
How is SDC/ LPSI/ CSP impacted by being aligned to the SFP?
- Results in SDC/LPSI/CSP inoperability
- Does NOT make SDC non-functional
