LOT 202.39 TSC HVAC

Question 1

• LOT 202.39 TSC HVAC*
• • *

What will NOT auto sequence onto the TSC DGs following a LOOP?

Answer 1

Heating Coils

• *TSC Chillers**
• Powered from 1W*

Question 2

• LOT 202.39 TSC HVAC*
• • *

What are the TSC HVAC return fan permissives?

Answer 2

• *At least one supply fan running**
• Maintains TSC at positive pressure*

Other return fan off

Auto Starts if running return fan trips.

Question 3

• LOT 202.39 TSC HVAC*
• • *

What will auto start the TSC HVAC supply fans?

Answer 3

Trip of Running supply fan

Interlocked to prevent both supply fans from running at once.

Question 4

• LOT 202.39 TSC HVAC*
• • *

What cools the ERFDADs Computer Room AHUs?

Answer 4

TSC Chillwater

• Humidifier supplied from potable water.
• TSC HVAC Expansion tank makeup from Demin water. (Auto M/U)

• Note:*
• Computer room pressure > TSC pressure > P_atm*

Question 5

• LOT 202.39 TSC HVAC*
• • *

How does the TSC HVAC System respond to a high radiation?

Answer 5

Starts Makeup Fan

Secures toilet exhaust fan

High smoke in outside air will secure toilet fan but makeup fan will not start. (Recirc)

• Note:*
• For smoke purge, toilet fan remains running and smoke purge damper opens.
• SI will not affect TSC HVAC