ESW

Question 1

What are the auto starts of the ESW pumps?

Answer 1

40#
SI.
Blackout sequence.

Question 2

What happens to ESW on an SI?

Answer 2

All 4 pumps start and the CTS ESW outlet valves throttle to 2100gpm.

Question 3

What are the loads on the ESW system?

Answer 3

Alt. supply to AFP.
AFP room coolers.
EDG air after coolers.
EDG lube oil coolers.
EDG jacket water coolers.
CTS HX.
CRAC.
CCW HX.

Question 4

What are the ESW pump power supplies

Answer 4

Unit 1
T11A West
T11D East
Unit 2
T21A West 
T21D East

Question 5

If you had a CTS HX tube leak what would be leaking into what?

Answer 5

CTS would leak into ESW.

Question 6

If you had a CCW HX leak what would be leaking into what?

Answer 6

CCW would leak into ESW.

Question 7

If you had a CRAC HX leak what would leak into what?

Answer 7

Chill water would leak into ESW.

Question 8

What is the alternate water supplies to ESW?

Answer 8

WMO-17 or 27

Question 9

When do the CTS HX ESW outlet valves open?

Answer 9

Only if you have a CTS signal and ICM-305 or ICM-306 are open.

Question 10

What would happen if you were manually switching ESW discharge strainers and you only operated one gate valve at a time?

Answer 10

You would isolate ESW from that pump.

Question 11

What happens to ESW if you loose Unit 2 control air?

Answer 11

Nothing all control air is supplied from Unit 1

Question 12

What would happen to ESW if you lost Unit 1 control air?

Answer 12

When header pressure lowered to 42# the backup air bottles would supply air to Backwash valves.