VENTILATION - CONTROL BUILDING

Question 1

What floors does the Control Building Exhaust (CBE) system cover?

Answer 1

The CBE system covers the 2nd to 5th floors, excluding the patio, stairwell, and 1st floor.

Question 2

What is the function of AH-E-17 in the Control Building ventilation system?

Answer 2

AH-E-17 is the normal supply fan; both AH-E-17 fans cannot run simultaneously, and dampers must be fully open to start with exhaust fans (AH-E-19) running.

Question 3

What happens if AH-E-18 (emergency supply fan) trips?

Answer 3

If AH-E-18 trips, AH-E-19 (return fan) and AH-E-95 (2nd floor booster fan) also trip.

Question 4

What is the start permissive for AH-E-19 (return fan)?

Answer 4

AH-E-19 starts automatically when AH-E-18 starts and is a start permissive for AH-E-17.

Question 5

When does AH-E-95 (2nd floor booster fan) start automatically?

Answer 5

AH-E-95 starts automatically when AH-E-17 or AH-E-18 starts.

Question 6

What does AOP-34 require if ventilation is off for more than 5 hours or cooling is off for more than 8 hours?

Answer 6

If ventilation is off for >5 hours or cooling is off for >8 hours and temperature limits are exceeded, initiate shutdown IAW Tech Spec 3.0.1.

Question 7

What are the room temperature limits for the Control Building?

Answer 7

1P/1S = 95°F, A/C/E Inverters = 88.6°F, B/D/F Inverters = 86.5°F, and all other areas (including MCR) = 80°F.

Question 8

What happens when RM-A-1 is in high alarm?

Answer 8

All fans trip except AH-E-19, and the operator must manually start AH-E-18, AH-E-90, and AH-E-91.

Question 9

What happens during TMP (AIT) or 4# ESAS conditions?

Answer 9

All fans trip except AH-E-17, AH-E-19, and AH-E-95.

Question 10

What is the inlet condition for the refrigerant cycle in the Control Building ventilation system?

Answer 10

The inlet to the compressor is low-pressure hot gas.

Question 11

What must be running to start a Control Building Chiller (AH-C-4A/B)?

Answer 11

AH-E-3A/B Chilled Water Pump must be running.