Essential Chill Water

Question 1

If 'A' Essential Cooling Water flow is isolated to the 'A' Essential Chiller, the 'A' EW system is \_\_\_(1)\_\_\_ and 'A' Shutdown Cooling system is \_\_\_(2)\_\_\_.
A.  (1) operable; (2) operable
B.  (1) operable; (2) inoperable
C.  (1) inoperable; (2) operable
D.  (1) inoperable; (2) inoperable

Answer 1

D

Question 2

Which of the following will cause a trip of the ‘A’ Essential Chiller?
A. Low EC condenser flow
B. Low EC cooler flow
C. Cooler high refrigerant temperature
D. Condenser low refrigerant temperature

Answer 2

B

Question 3

Unit 1 is at 100% power with all systems in a normal lineup.
The RO has briefed starting the ‘A’ Essential Chiller and has discussed the expected alarms with the CRS.
The RO starts ‘A’ Spray Pond pump, ‘A’ EW pump, and ‘A’ Essential Chiller.
Approximately one minute later, the RO acknowledges the “ESS CHLD WTR SYS TRBL” alarm and correctly declares it was expected. The alarm came in due to:
A. Supply Header Temperature Hi
B. Expansion Tank Level Hi
C. Refrigerant Level Lo
D. EC circulating pump low differential pressure

Answer 3

A