Service Water Flashcards
1
Q
System purpose?
A
- Provides cooling water to various components in the Aux building, turbine building, containment building, and the intake structure
- Serves as a back-up to the suction of the AFWpumps and the Isolation valve seal water tank. (IVSW)
- Supplies water for the CircWater Pump seals and screen wash
2
Q
Power supplies for Service water Pumps?
A
- A,B powered from E1
- C,D powered from E2
- D can also be powered from DS bus by the kirk key in the CCW pump room.
3
Q
Kirk Keys in the plant?
A
- CCW Pump room, SW pump to DS bus
- Waste gas disposal panel, MCC-5 to the DS Bus
- South Cable vault room, (MG set room) N51 to DS Bus
4
Q
R-16 Process Monitor, location, what it monitors
A
- Located in the Aux Hallway behind the Station air compressor.
- Monitors the CV HVH units cooling discharge for radiation indicative of a leak from the CV atmosphere in the cooling water.
5
Q
SW-739 and 740
location and what they do
A
- Located in the CCW pump room south of the CCW heat exchangers.
- 2 positions (limited to)
- Pos1- 5000gpm for each CCW heat Xchagner.
- Pos2-10000gpm for one CCW heat Xchanger
- Not to cause pump runout on 2 pumps on accident conditions
6
Q
Service Water Booster Pumps (SWBP)
location and power supplies
A
- Aux hallway
- A powered by MCC-16
- B powered by MCC-18
7
Q
What does the SWBP do for us?
A
- At least one is required to supply cooling water to the CV HVH Units.
- SI auto start with SW pump start
- Blackout, must have 30psig
- Pump trips with suction pressure 12psig for longer than 10 seconds
8
Q
V-6-12 A,B,C,D power supplies
A
- V6-12A (South Hdr Isol) MCC5
- V6-12B (HDR cross connect) SW pump A/B side MCC-5
- V6-12C (HDR cross connect) SW pump C/D side MCC-6
- V6-12D (North HDR Isol) MCC-6/5 via manual transfer switch
9
Q
V6-16 A,B,C power supplies
Turbine Building Isolations
A
- V6-16A (North Header) MCC-9
- V6-16B (South Header) MCC-10
- V6-16C (Both) MCC-10/9
10
Q
Chemical Treatment (what chemical) added to the Service water? and why?
A
-Sodium Hypo-chlorate added to system to minimizing biofouling
