Diesel Generator/Cable Vault CO2 Fire Suppression

Question 1

Purpose of the EDG CO2 Fire Suppression system?

How many bottles

Answer 1

• Extinguish a fire in the EDG rooms by smothering and cooling.
• 19 bottles

Question 2

If there is a fire in Either EDG Room what happens?

Answer 2

• 30sec alarm delay (Alarm cylinder takes 30mins to exhaust)
• 4 Pilot cylinders open to fill header to open the rest of the CO2 cylinders (2 with manual handwheels for manual operation)
• 19 CO2 cylinders empty into either EDG A (Zone2) or EDG B (Zone1)

Question 3

HADs

How many in each room, what is it, what it does

Answer 3

• 2 in each room.
• Thine walled bulb shaped chamber, head expands the air in the chamber, the increasing air pressure is transmitted via tubing to the ROR release assembly.
• ROR releases pilot pressure which beings actuation sequence.
• Closes Dampers/Stops Supply fans, exhaust fans AND STOPS FUEL OIL TRANSFER PUMPS

Question 4

Other indicators in room. Zone 1 and 2
Do they actuate CO2
What do they do?

Answer 4

• 2 infrared flame detectors
• 1 heat detector
• 1 manual pull station
• Does not actuate CO2
• Closes Dampers/Stops Supply fans and exhaust fans

Question 5

Purpose of the Cable Vault fire system?

How many Bottles?

Answer 5

• Extinguish a fire in the North Cable Vault room, Zone 9
• Extinguish a fire in the South Cable Vault Room, Zone 10
• 36 bottles total

Question 6

North Cable Vault gets how many Cylinders?

South?

Answer 6

• Gets 7 cylinders. Either from Main bank or reserve bank.

- All 18 from either Main bank, or Reserve bank

Question 7

Where are the CO2 cylinders for zone 9 and 10?

Answer 7

Pipe Ally

Question 8

When will CO2 actuate in Zone 9 or 10?

Answer 8

-Need 2 separate fire alarm signals from the same fire detection zone.
(one on each train)
-Can be manually operated from Cylinders
-Can be operated from FDAP A-1 or B-1
-Manual pull stations. 2 in each zone.