EDG Service Water Cooling

Question 1

EDG Backup Cooling

Answer 1

• One EDG can be cooled by “D” Deepwell Pump in the event of a complete loss of service water
• “D” deepwell pump can be powered from MCC-16, MCC-18 or MCC-11 via manual transfers switches.

Question 2

SW comes from:

Answer 2

• Service water for EDG A, South header, TCV-1660
• Service water for EDG B, North header, TCV-1661

-can be cross connected through SW-83 if need be (Before TCV valves)