40AO-9ZZ01 Emergency Boration Flashcards
During 40AO-9ZZ01 Emergency Boration, what is Rx trip criteria?
- Adequate SDM does NOT exist
- LD not is service
What is the Tech Spec basis/ requirement for emergency boration if SDM is lost?
- ≥ 26 gpm boration flow
- > 4000 ppm boration source
If SDM is lost how long do you have to begin emergency boration?
- 15 min TCA
- 30 min TCA if BAMP filter bypass used (extra time for AO)
What is the preferred mode of force for emergency boration?
- CH pumps
What is the minimum level in the RWT to use the normal CH suction path (532)
- > 73%
- RWT level alarm comes in at same time
What is the minimum RWT level when CH pumps are aligned to their alternate suction? (327)
- < 50% - 2 CH pumps
- < 46% - 1 CH pump
- < 44% - all CH pump in PTL
What is the preferred order of emergency boration paths if CH pump suction aligned to 532?
- Gravity flow through 536
- BAMP flow through 514
- Bypass BAMP filter through 164
What is the minimum RWT level for CH pumps if PC Clean Up is aligned to RWT?
- 3 CH pumps - Not allowed
- 2 CH pumps - > 92%
- 1 CH pump - > 83%
What levels/ volume in the SFP is credited for Emergency Boration?
- 137’ 4”
- 133’ 6”
- 33,500 gallons
When would you use HPSI pump for boration?
- CH pumps not available
What is the minimum flow if borating with a HPSI pump?
- Use 1 injection vlv
- ≥ 75 gpm (sq root extractor)
- ≥ 225 gpm if boration > 1 hour
When would you use LPSI pump for boration?
- HPSI not available
- RCS < 220 psia
- AOP does NOT depressurize for LPSI
How long do you have to STOP and inadvertent dilution?
- 15 minutes mode 3-5
- 30 minutes mode 6
With a concern about boron concentration, how long is considered an “extended period of time” for for an IX to be isolated?
- > 72 hours
When would an IX be required to be flushed prior to being placed in service?
- > 20 ppm boron difference
- > 72 hours
- initial flushes