Conditionals

Question 1

C-1 Coincidence, Setpoint, and Function

Answer 1

• 1/2 IR NI
• At approximately 18% U1 (16% U2)
• Auto and Manual Rod Withdrawal Stop
  (Manually blocked above P-10, auto un-blocked below P-10)

Question 2

C-2 Coincidence, Setpoint, and Function

Answer 2

• 1/4 PR NI
• At 103%
• Auto and Manual Rod Withdrawal Stop
  (Rod stop bypass on drawer)

Question 3

C-3 Coincidence, Setpoint, and Function

Answer 3

• 2/4 OTΔT
• 3% < Trip Setpoint
• Auto and Manual Rod Withdrawal Stop and Initiates Turbine Runback

Question 4

C-4 Coincidence, Setpoint, and Function

Answer 4

• 2/4 OPΔT
• 3% < Trip Setpoint
• Auto and Manual Rod Withdrawal Stop and Initiates Turbine Runback

Question 5

C-5 Coincidence, Setpoint, and Function

Answer 5

• 1/1 Impulse # (MPC-253)
• < 15%
• Auto Rod Withdrawal Stop

Question 6

C-7A Coincidence, Setpoint, and Function

Answer 6

• MPC-254
• 10% load rejection
• Arms group 1 & 2 steam dump valves for load rejection

Question 7

C-7B Coincidence, Setpoint, and Function

Answer 7

• MPC-254
• 30% load rejection
• Arms group 3 steam dump valves for load rejection

Question 8

C-8 Coincidence, Setpoint, and Function

Answer 8

• 4/4 turbine stop valves OR 2/3 oil pressure switches
• Stop valves closed (<1% open) OR oil pressure < 800#
• Arms groups 1 & 2 steam dumps and disarms group 3, automatically selects the turbine trip controller for steam dumps.

Question 9

C-9 Coincidence, Setpoint, and Function

Answer 9

• 1 Circ Pump Breaker closed, AND CRID 2 energized, AND 3/3 Condenser Vacuum ≥ 20.6” Hg
• Energized: Unblocks Steam Dump Operation
• De-energized: Blocks Steam Dumps

Question 10

C-11 Coincidence, Setpoint, and Function

Answer 10

• No coincidence
• Bank D demand at 229 steps
• Auto rod withdrawal stop

Question 11

C-20 Coincidence, Setpoint, and Function

Answer 11

• 2/2 Turbine Impulse #
• # > 40%
• Enables:
  1) AMSAC
  2) Turbine Trip
  3) MDAFP Start
  4) TDAFP Start