Liquid Rad Waste

Question 1

What happens to LRW during discharge if RE18 goes into alarm?

Answer 1

RCV-18 closes, securing ovbd discharge

FCV-477 opens, recirculating flow back to EDR

Question 2

What are functions of LRW?

Answer 2

• receive radioactive liquid waste
• move batches of waste tank -> tank
• process waste to reduce activity
• discharge processed waste

Question 3

Describe LRW isolation signal

How do you reopen valves ?

Answer 3

• Closes all LRW CIV’s
• actuated by Phase A or manual (VB-2)
• train A(inside cnmt), train B(outside cnmt)

-Reset phase A(if actuated), reset LRW isolation, open valves from control panel

Question 4

What fluid normally fills PWR?

Answer 4

Processed water prior to discharge

Question 5

Inputs to RCDT

Answer 5

• system drains(RCS, cvcs, SI, RHR, accum)
• seal table
• Rx vessel flange leakoff
• PRT
• lower cavity drain
• RCP seal leakoff #2 & 3