Condensate System (CNM) Flashcards
What position does the condensate pump min flow valve (FV114) fail?
F.O.
What is the flow through the condensate min flow line?
4800 gpm per pump
What is the purpose of Oxygen Feedwater Injection?
Maintain a passive layer on piping walls to minimize corrosion.
What are the Condensate Pump power supplies?
P1A - SWG 11
P1B - SWG 13
P1C - SWG 11/13
What are the Condensate Boosetr Pump power supplies?
P2A - SWG 001
P2B - SWG 003
P2C - SWG 001/003
Where is HWC injected?
Suction of Condensate Booster Pumps
What does a Condensate Pump auto start on?
- Condensate >11,000 gpm and <2/3 HDL pumps running
- Low suction (48#s on P2s, CBPs)
- Trip of running pump
When can Condensate Booster Pumps inject into the RPV?
< 600#s
What auto starts a Condensate Booster pump?
- Condensate Flow >11,000 gpm AND <2/3 HDL pumps running
- Low suction (< 285#) of feed pump
- Trip of running pump
How does the LP Heater String Bypass valve (AOV101) fail?
Fails As-Is
When does the LP Heater String Bypass valve open?
Opens on Turbine trip if >472psia of first stage pressure. ~71% power
What are the flow and heating capacities of 1 feedwater heater string?
Flow: 42%
Heating: 33%
What do the Heater String Inlet (MOV33) and Outlet (MOV32) valves do on a Hi-Hi on 1st or 2nd stage heater?
Isolate the Low Pressure Heater String on Hi-Hi
The valve will stop on current position when condition clears.
What position does the Cond Demin bypass valve (AOV109) fail?
Fails As-Is
What trips the Condensate Booster pump?
- 86/UV
- Slow transfer
- Low lube oil (<3# for 10 sec)
- Low Suction (<48#, A 10sec, B 14 sec, C 18)
- Low Low Suction (<38#, A 4 sec, B 8 sec, C 12sec)
What is the flow rate through the Condensate Booster Pump min flow valve?
4400 GPM each
What happens to condensate system on a loss of HDL pump?
Cond Flow Increases
Cond Demin D/P increases
What needs to be performed to the Condensate system following a LOOP?
Fill and Vent of entire system
What needs to happen to all Cond Demin Inlet and Outlet valves on a loss of condensate?
Valves shall be closed ASAP to preclude resin getting into the system.
When does Hood Spray valve (TV121) open?
120F to either A or C condensers
What is an Auto Start for the CBP Oil Pump?
- CBP running and low oil pressure (<4 psig)
- CBP driven oil pump high suction pressure (>35 psig) with CBP NOT RUNNING
What are the CBP oil pump trips?
- CBP running and oil pressure hi (>4 psig)
- CBP not running for 5min
What happens to the min flow valves for the Condensate and Condensate Booster pumps on a loss of air
Fail OPEN
What is cooled by Condensate?
- Inner-condenser (SJAE)
- Steam Packing Exhausters
What is the type and capacity of the Condensate pumps?
3 stage, vertical, centrifugal pump
11,800 gpm
What is the type and capacity of the Condensate Booster pumps?
Single Stage centrifugal pump.
11,800 gpm
