Condensate

Question 1

What is the tech spec minimum of the CST?

Answer 1

182,000gal

Question 2

What are the HWP auto starts?

Answer 2

Low # at:
130# (U1)
110# (U2)

Question 3

What are the HWP trips?

Answer 3

Overload/Overcurrent

Question 4

What powers the HWPs?

Answer 4

4kV RCP Buses
1/2D North
1/2A Middle
1/2C South

Question 5

What are the CBP auto starts?

Answer 5

Low pressure at 325#

Question 6

What are the CBP trips?

Answer 6

Overload/Overcurrent

Question 7

What is the flow capacity of the LP #1 heaters?

Answer 7

Each string supplies 50% flow (We have 3)

Question 8

What is the flow capacity of the LP #2-4 heaters?

Answer 8

Each string supplies 80% flow (we have 2 strings) with a bypass that can provide 20% flow via CRV-224

Question 9

What does CRV-55 do for you?

Answer 9

Allows makeup from the CST to the Condenser Hotwells (Sensed on A and C hotwell lvl)

Question 10

What does CRV-155 do for you?

Answer 10

Allows for excess condensate from hotwells to go back to the CST (Sensed on A and C hotwell lvl)

Question 11

What does CRV-224 (2,3,4 Heater bypass valve) do?

Answer 11

• Allows having a heater string out and provides 20% flow
• Auto modulates open when MFP suction < 240#
• Trips open at 210# MFP Suction

Question 12

How do you reset CRV-224 (2,3,4 Heater bypass valve)?

Answer 12

Run controller to open when MFP Suction pressure > 260#

Question 13

What do CRV-201, 202 and 203 (Condensate Booster Pump Recirc Valves) do?

Answer 13

Maintain 4000 gpm on running pumps

Question 14

Where is the flow switch located for the Condensate Booster Pump Recirc Valves?

Answer 14

Flow switch is on the common discharge header

Question 15

What do CMO-101(102) (SJAE bypass valves) allow?

Answer 15

• Manually position to achieve desired DP across SJAEs
• Prevents exceeding design flow of SJAEs

Question 16

How much hood spray does each unit have?

Answer 16

• 138gpm (U1)
• 1200gpm (U2)

Question 17

What does CMO-61 (SJAE and HWP recirc line valve) do for you?

Answer 17

• Provides continuous flow path from steam jet air ejector header to the main condensers to maintain minimum flow through the hotwell pumps and steam jet air ejector condensers
• 2400gpm min per pump

Question 18

What does the basis for T.S. 3.7.6 (CST) state

Answer 18

To remove heat from 100% to no-load MODE 3 and to either remove decay heat for 2 hours in M3 then cool down to RHR assuming loss of offsite power. OR to remove decay heat for 9 hours in M3 assuming loss of offsite power as the initiating event.

≥ 138,335 usable gallons, which is based on the more limiting of either holding the unit in MODE 3 for 9 hours or holding the unit in MODE 3 for 2 hours followed by a 4 hour cooldown to RHR entry conditions

Question 19

What suction pressure do the CRV-224 valves help to maintain?

Answer 19

210 psi - 240 psi MFP Suction Pressure
- Begins modulating at 240 psi
- Trips open at 210 psi

Question 20

What Unit(s) have Condenser equalizations and what are they for?

Answer 20

Unit 1 to maintain even stresses (by temperature and pressure) on the Turbine Bearings

Question 21

Explain the purpose and functions of the Condensate Chemical Feed System.

Answer 21

Minimizes secondary side piping and steam generator corrosion by injecting chemicals that control pH and scavenge residual dissolved oxygen.

Question 22

What actuates hood spray in Unit 1 (CRV-102) and Unit 2(CMO-40)?

Answer 22

• Generator Load < 7.5% and Turbine Speed > 900 rpm
• Manual

Question 23

If ‘A’ Hotwell is providing input to the HW Lvl Ctlr, then which hotwell level is being displayed on the Chart Recorder?

Answer 23

‘C’ Hotwell level is being displayed on the chart recorder

Question 24

How does CRV-55 fail?

Answer 24

Closed

Question 25

How does CRV-155 fail?

Answer 25

Closed

Question 26

At what Generator Load OR Turbine Speed does Hood Spray Terminate for both units?

Answer 26

Generator load is > 12.5% OR Turbine speed is < 900 rpm