Condensate Transfer

Question 1

What is the basis of the CST volume?

Answer 1

• 140k gallons to maintain the plant in hot standby
• 140k gallons to cool the plant to 350F at 75F/Hr for SDC

Question 2

What signals will auto start the Condensate Transfer pumps?

Answer 2

LOP
SIAS
CREFAS
CRVIAS

Question 3

What is the limiting condition and the basis for LCO 3.7.6, CST?

Answer 3

M1, 2, 3, and 4 when SG is needed for heat removal
> 29.5’ Level
Basis: must have enough water to remove decay heat for four hours after a trip from 102%, and then cooldown to SDC with a LOOP
- 4 hours (and once per 12 hours) to verify RWMT has enough water
- 7 days to restore level