Liquid Rad Waste (WDS)

Question 1

What will auto close the Unit Release Valve (RRV-286/287)?

Answer 1

NO CW Pumps running in associated unit

Question 2

What happens on a High Rad Signal or failure of RRS-1000

Answer 2

• Liquid Waste Disposal Effluent Hdr to Circ Water Disch Control valve, 12-RRV-285 CLOSES
• MT/WECT Pump selected for Release Trips

Question 3

What can trip a Monitor Tank Pump?

Answer 3

• Hi Rad / Failure of RRS-1000 when selected to release.
• Low Monitor Tank Level when proper tank selected

Question 4

When do the aux building floor drains drain to?

Answer 4

• 609’ and above drains go to DWHUT.
• 587’ drains go to Dirty Sump Tank.
• 573’ drains go to Aux Sump.

Question 5

What is the purpose of the Time Delay Chamber in the Liquid Release flowpath?

Answer 5

Gives sufficient delay time in the release flowpath- allows RRV-285 to close in time to prevent the release of bad water.

Question 6

What is the Interlock for CWHUT and DWHUT inlet valves? (RRV-255/256)

Answer 6

Interlocked so that both cannot be closed at the same time (prevents backing up of drains)

Question 7

Which ONE of the following describes three sources of liquid waste to the Reactor Coolant Drain Tank?

A. Excess Letdown Heat Exchanger , Lower Containment Sump, Charging Line Suction Relief

B. RCS Loop Drains, Reactor Vessel Flange Leak Off, SI Accumulator Tank Drains

C. RCS Loop Drains, Pressurizer Relief Tank, Reactor Cavity Sump

D. RCP Thermal Barrier Relief, Excess Letdown/Seal Return Relief, Reactor Vessel Flange Leak Off

Answer 7

• B. RCS Loop Drains, Reactor Vessel Flange Leak Off, SI Accumulator Tank Drains

Question 8

What Drain sources tap into RCDT Outlet piping?

Answer 8

• RCP #3 Seal
• PRT

Question 9

What drains into the CWHUT?

Answer 9

Hard Piped equipment drains from the 609’ and above

Question 10

What 3 sumps are pumped out of containment? Where do they go?

Answer 10

All pump to DWHUT/CWHUT
- Lower Ctmnt Sump
- Reactor Cavity Sump
- Pipe Tunnel Sump

Question 11

Where do the Clean/Dirty Sump tanks overflow?

Answer 11

Aux Sump

Question 12

What drains into the Clean Sump Tank?

Answer 12

Hard Piped drains on the 587’

Question 13

Where do drains on the 573’ Elevation go?

Answer 13

Aux Sump

Question 14

Where can the RCDT contents be pumped to?

Answer 14

• CVCS HUT
• CWHUT
• RWST

Question 15

Where does the RCDT receive drains from?

Answer 15

• Accumulator Drains
• XS LD Hx Drains
• Regen Hx Drains
• RCS Loop Drains
• RCP #2 Seal Leak off
• Rx Vessel Flange Leakoff
• Refueling Cavity

Question 16

When does TRO 8.7.11, Liquid Holdup Tanks, apply?

Answer 16

At all times.

Question 17

Which tanks does TRO 8.7.11, Liquid Holdup Tanks, apply to?

Answer 17

Outdoor tanks not surrounded by liners, dikes, or walls capable of holding the tanks contents and that do not have overflows and surrounding area drains connected to the liquid radwaste system

Question 18

Per TRO 8.7.11, Liquid Holdup Tanks, what do you do if rad matieral in any outdoor tank is greater than the limit?

Answer 18

IMMEDIATELY stop putting more in!

Ya big dummy.