Waste Gas (WDS)

Question 1

What does the WGC inlet isolation valve do?

Answer 1

Prevents short-circuiting gas thru the standby WGC

Question 2

What does the WGC Moisture Sep Unloader valve do?

Answer 2

Prevents compressor from starting under load

Question 3

What does the WGC Moisture Sep Gas Recycle Valve do?

Answer 3

Controls vent header pressure by opening to recycle waste gas from moisture separator back to vent header

Question 4

What is the interlock associated with the GDT Inlets?

Answer 4

Only 1 can be open at a time

“Break before make”

Question 5

When will the I/S GDT swap to the Standby GDT?

Answer 5

• Hi-Hi oxygen (from AOM)
• In Service GDT gets to 100#

only swaps if a standby tank is selected

Question 6

At what constant pressure does RRV-305 (Waste Gas Release pressure Ctrl Valve) maintain the inlet pressure to RRV-306?

Answer 6

5 psig

Question 7

What does RRV-306 (Waste Gas Release Flow Ctrl valve) do?

Answer 7

Manually positioned to control release FLOW rate

Question 8

What will trip RRV-306 (Waste Gas Release Flow Ctrl valve) closed?

Answer 8

• Loss of both U1 AX Fans
• High Rad on U1 or U2 Vent Stack Rad Monitors (VRS-1500/2500)

Question 9

What interlock does RRV-306 have to open?

Answer 9

• At least 1 AX must be running**

Question 10

Where does the AOM sample the waste gas header

Answer 10

Discharge of the moisture separator on the WGC

Question 11

What is the normal waste gas vent header pressure?

Answer 11

Between 1.3 - 2.0 psig