RD: Radioactive Drains

Question 1

What is the power supply for the RD pumps?

Answer 1

NH

Question 2

What is the Safety Basis for the RD system?

Answer 2

Not Interconnected w/o check valves

Each ESF Sump has backflow check valves

Question 3

RD pumps are _______ % capacity.

Answer 3

100%

Question 4

How are the RD pumps physically attached to their sumps?

Answer 4

They are hung from the sump cover plate and protected by a pipe.

Question 5

Where does the RD System ultimately send any water it collects?

Answer 5

To the Liquid Radwaste System

Question 6

High level in a RD sump starts the _______ pump.

Answer 6

Lead

Question 7

High-High level in a RD sump starts the _______ pump.

Answer 7

Lag

Question 8

Lo-Lo level in a RD sump does what?

Answer 8

Secures all operating sump pumps

Question 9

____ supplies lube water to the RD Sump Pumps.

Answer 9

DW

Question 10

To where do the Reactor Cavity Sump Pump discharge?

Answer 10

To the Containment East Sump

Question 11

How many pumps does each Containment Sump have?

Answer 11

1

Question 12

What must be open to start a Containment Sump Pump?

Answer 12

UV-23

Question 13

What is the time delay associated with an auto start of a Containment Sump Pump?

Answer 13

3 minutes after receipt of a High Level

Question 14

What type of valve is RDA-UV-23?

Answer 14

MOV

Question 15

What type of valve is RDB-UV-24?

Answer 15

AOV

Question 16

What will auto close the Containment Isolation Valves for the RD System?

Answer 16

CIAS

Question 17

What are the Control Room alarms for the Reactor Cavity Sump and the Containment Sumps based on?

Answer 17

Sump fill rate and sump pump run time.

Question 18

What will bring in the CNMT SUMPS TRBL alarm?

Answer 18

Reactor Cavity Level Hi-Hi
Containment Sump Level High-High/Lo-Lo
Pump not in AUTO
Excess Run Time 
Excessive Leakage (sump pumped twice in an hour)

Question 19

What will bring in the CNMT SUMPS EXCESS LEAKAGE alarm?

Answer 19

Containment Sumps - sump pumped to Low Level twice within one hour (equates to > 1 gal/min leakage)

Question 20

What does TechSpec 3.4.14 say about RCS Leakage?

Answer 20

No Pressure Boundary Leakage
NTE 1 gpm unidentified leakage
NTE 10 gpm identified leakage
NTE 150 gpd primary to secondary leakage

Modes 1 through 4

(RCP Seal Bleedoff is not included in any category)

Question 21

What does TechSpec 3.4.16 say about RCS Leakage Detection?

Answer 21

That you need all 3 Containment Sump monitors and RU-1.