Aux Building HVAC

Question 1

Control Room Ventilation
HVA-1A/B
Location? Power supplies? Keeps CR between? Cooled by and backup?

Answer 1

• Behind door 42
• 1A from MCC-16
• 1B from MCC-18
• 70-77F
• SW normal cooling, Fire Water is backup

Question 2

2 trains for CR Ventilation

Consist of?

Answer 2

• A powered from MCC-16 which supplies HVA-1A, HVE-19A, and WCCU-1A
• B powered from MCC-18 which supplies HVA-1B, HVE-19B, and WCCU-1B

Question 3

CR Ventilation also has a ACU (Air Cleaning Unit)

Answer 3

-Contains Prefilter, Charcoal absorber, Post HEPA filter

Question 4

EDG room ventilation normal supplied by?

Exhausted by?

Answer 4

• HVS-1 (Aux building Supply Fan)

- HVE-2A/2B

Question 5

EDG room ventilation when EDG is running?

Answer 5

• HVS-5 (B) and HVS-6 (A) supplies

- HVE-17 (B) and HVE-18 (A) exhaust

Question 6

Power Supplies for EDG HVAC?

Answer 6

• HVS-6 (A) - MCC-6
• HVS-5 (B) - MCC-5
• HVE-17 (B) -MCC-6
• HVE-18 (A) -MCC-5
• HVS-1 - MCC-5
• HVE-2A/2B - MCC-5/6

Question 7

S/A/R
SI/RHR/AFW
what are associated HVACs?
Power supplies?
Locations?

Answer 7

• HVH-6A/B (SI room) MCC-5/6
• HVH-7A/B (AFW room) MCC-6/5 (Backwards power)
• HVH-8A/B (RHR) MCC-5/6 (A is in B RHR pit)

Question 8

HVH-6A/B start when?

Answer 8

• 6A starts when CV spray Pump A starts, SI pump A starts, or Si pump B (When powered from E-1)
• 6B starts when CV spray pump B starts, SI Pump B starts or Si Pump B(When powered from E-2)

Question 9

HVH-7A/B start when?

Answer 9

• A starts when MDAFW Pump B starts

- B starts when MDAFW Pump A starts

Question 10

HVH-8A/B start when?

Answer 10

• A starts with A RHR pump, even though its in Pit B

- B starts with B RHR pump even though its in Pit A