RD: Radioactive Drains Flashcards
What is the power supply for the RD pumps?
NH
What is the Safety Basis for the RD system?
Not Interconnected w/o check valves
Each ESF Sump has backflow check valves
RD pumps are _______ % capacity.
100%
How are the RD pumps physically attached to their sumps?
They are hung from the sump cover plate and protected by a pipe.
Where does the RD System ultimately send any water it collects?
To the Liquid Radwaste System
High level in a RD sump starts the _______ pump.
Lead
High-High level in a RD sump starts the _______ pump.
Lag
Lo-Lo level in a RD sump does what?
Secures all operating sump pumps
____ supplies lube water to the RD Sump Pumps.
DW
To where do the Reactor Cavity Sump Pump discharge?
To the Containment East Sump
How many pumps does each Containment Sump have?
1
What must be open to start a Containment Sump Pump?
UV-23
What is the time delay associated with an auto start of a Containment Sump Pump?
3 minutes after receipt of a High Level
What type of valve is RDA-UV-23?
MOV
What type of valve is RDB-UV-24?
AOV
What will auto close the Containment Isolation Valves for the RD System?
CIAS
What are the Control Room alarms for the Reactor Cavity Sump and the Containment Sumps based on?
Sump fill rate and sump pump run time.
What will bring in the CNMT SUMPS TRBL alarm?
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)
What will bring in the CNMT SUMPS EXCESS LEAKAGE alarm?
Containment Sumps - sump pumped to Low Level twice within one hour (equates to > 1 gal/min leakage)
What does TechSpec 3.4.14 say about RCS Leakage?
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)
What does TechSpec 3.4.16 say about RCS Leakage Detection?
That you need all 3 Containment Sump monitors and RU-1.
