Reactivity and Power Distribution Anomalies TAA Flashcards
1
Q
How is an Uncontrolled CEA withdrawal terminated?
A
Subcritical - High Log Power Trip
At Power - CPC VOPT or high PZR press
2
Q
What is the most limiting case for a CEA drop?
A
CEA drop which does NOT cause a trip
3
Q
What is the concern with the statup of an inactive RCP?
A
- Potential loss of subcriticality (Not assumed to occur)
4
Q
How is an Inadvertent Dilution different than other Rx and Power dist. anomalies?
A
Operator action is REQUIRED prior to achieving criticality
5
Q
What is the most limiting condition for an Inadvertent dilution?
A
- Mode 5 (Cold S/D)
- RCS Drained down
- Lowered RCS volume w/ 3 CH pumps provides least time
6
Q
What is the Limiting Event Fault for Rx and Power Dist. Anomalies?
A
CEA Ejection
