Safeguards Flashcards
What are the unlatched actions of a Safeguards actuation?
Rx Trip
Containment Isolation
MFW Isolation
CCS Containment Isolation (V200/V207/V208)
CVS Makeup Isolation (V90/V091) w/ PZR Level High-1 (23 % (2/4))
What are the latched actions of a Safeguards actuation?
RNS Containment Isolation
CMT Actuation
Enables CSF visual alerts
- Note:*
- CSF - Critical Safety Function (Display on Ovation)*
What is the primary function of the safeguards actuation signal?
CMT Actuation
Ensures coverage of active fuel for:
- Heat removal
- Clad integrity
- Peak clad temperature < 2200 °F
Boration (Keff < 1.0)
How long must the operator wait to Reset/Block Safeguards on the PDSP?
60 Seconds w/ P-3
After 60 seconds following safeguards with P-3 the Reset/Block soft control on the PDSP resets/Blocks ALL safeguards initiation signals. The operator can still manually initiate safeguards.
P-3 /// Rx Trip breakers open
What will initiate Safeguards?
Containment Pressure - High 2 [6.2 psig (2/4)]
PZR Pressure - Low 3 [1815 psig (2/4)]
SL Pressure - Low 2 [560.3 psig (2/4 on 1/2)]
RCS TCold - Low 2 [505 °F (2/4 on 1/2)]
Manual
How can you manually initiate Safeguards?
2 PDSP switches (1/2)
1 RSR switch (1/1)
For the Containment Pressure - High 2 Safeguards Actuation Signal, what is the set point and coincidence?
6.2 psig (2/4)
For the PZR Pressure - Low 3 Safeguards Actuation Signal, what is the set point and coincidence?
1815 psig (2/4)
For the SL Pressure Low-2 Safeguards Actuation Signal, what is the set point and coincidence?
560.3 psig (2/4 on 1/2)
For the RCS TCold - Low 2 Safeguards Actuation Signal, what is the set point and coincidence?
505 °F (2/4 on 1/2)
Which Safeguards signal provide protection < P-11 (PZR Pressure ≤ 1970 psig)?
Containment Pressure - High 2 [6.2 psig (2/4)]
- Note:*
- All other signals Manual Block ≤ P-11 / Auto Unblock > P-11*
- *
P-11 /// Divisional PZR Pressure ≤ 1970 psig
