PPC

Question 1

What is the PPC Purpose?

Answer 1

PPC Purpose

• Provides control, monitoring and alarm capabilities during normal and emergency plant conditions.
• Normal output for the Incore detectors as well as the Incore alarm function
• Provides the PIP indication channel and the SPI position indication channel.
• Provides the Control Rod Group Sequence Control, and the Control Rod Out‑of‑Sequence and Power Dependent Insertion Limit alarm functions
• Operator’s interface for performing the Heat Balance Calculations and Control Rod Drop Timing Tests.
• Operator’s interface for monitoring plant parameters

Question 2

What is the UPS Design?

Answer 2

UPS Design

• Provide reliable power (at nominal 120V AC and 125V DC levels) to its supplied load
• Includes battery chargers, distribution panels, a backup battery, inverters, standby power transformers, manual and automatic transfer switches,
• Non-Class 1E

Question 3

What are the UPS Loads/AC Supplies?

Answer 3

UPS Loads

• Divided between 120 VAC panels Y02 and Y03.

UPS A/C Supplies

Normal

• MCC-3/4 to L-03/04 to D206/207 to Y-210/220

Backup

• Battery

Question 4

When does the UPS Auto Swap?

Answer 4

UPS Auto Swap

At 105 VDC on Battery, auto swaps to MCC-3 or 4.

Question 5

Group 11, Page 1 allows you to monitor what points?

Answer 5

• PT0205 Volume Cntrl Tnk T-54 Pressure
• LTC0205 Volume Cntrl Tnk Level
• T_REF Temp Reference for T-ave
• TAVG Average Temp Hot & Cold Legs
• HB_PWR_STEADY Heat Balance Power Steady State
• HB_PWR_2HR HB Power - Rolling 2 Hr Avg

Question 6

Group 11 Page 2 allows you to monitor what points?

Answer 6

• LT0382 Containment Sump Water Level
• PT-0764 Condenser Vacuum Wide Range
• FT-0212 Charging Line Flow
• FT-0202 Primary Coolant Letdown Flow
• LPRZC Prz Lvl Compensated
• PZRBE Pressurizer Press Best Est

Question 7

Group 11, Page 3 allows you to monitor what points?

Answer 7

• ASI_AVERAGE Average of ASI_NI5….ASI_NI8
• TIA-0925D Spent Fuel Pool Temp
• RIA-0631 Off Gas Monitoring
• RI-0707 Stm Gen Blowdown Rad Monitor
• RIA-2324 Stm Gen A Gamma RIA 2324
• RIA-2323 Stm Gen B Gamma RIA2323

Question 8

Group 11, Page 4 allows you to monitor what points?

Answer 8

• FT-0701 Feed Flow to Steam Gen E-50A
• FT-0703 Feed Flow to Steam Gen E-50B
• FT-0702 Stm Flow from Stm Gen E-50A
• FT-0704 Stm Flow from Stm Gen E-50B
• LSGABE Stm Gen A Lvl Best Estimate
• LSGBBE Stm Gen B Lvl Best Estimate

Question 9

Group 11, Page 5 allows you to monitor what points?

Answer 9

• LT-0729 Condenser Hotwell Level
• LT-2021 Cndnsate Storage Tank Level
• PT-0580 Main Turbine Steam Inlet Press
• TT-0706A Heater E6A Outlet Temp
• PT-0751B Steam Gen E-50A Pressure
• PT-0752B Steam Gen E-50B Pressure

Question 10

What points can be monitored on Group 29, Page 7?

Answer 10

• PT-1812A Containment WR Press 1812A
• PT-1805A Containment WR Press 1805A
• RI-1805 Cnmt Radiation Iso RI1805
• RI-1806 Cnmt Radiation Iso RI1806
• RI-1807 Cnmt Radiation Iso RI1807
• RI-1808 Cnmt Radiation Iso RI1808

Question 11

What can be monitored on Group 29, Page 8?

Answer 11

• RIA-0631 Off-Gas Monitoring
• EP-1057 Pressurizer Spray Valve 1057
• EP-1059 Pressurizer Spray Valve 1059
• ZH2155 PMW Makeup Cntrl Vlves
• PZRBE Pressurizer Pressure Best Est

Question 12

What can be monitored on Group 29, Page 6?

Answer 12

• LT-0702_D Stm Gen E-50A Level
• LT-0704_D Stm Gen E-50B Level
• PT-0751B Stm Gen E-50A Press
• PT-0752 Stm Gen E-50B Press
• RIA-2323 Stm Gen B Gamma RIA2323
• RIA-2324 Stm Gen A Gamma RIA2324