P's and C's

Question 1

What is C-1

Answer 1

IR Rod Stop 1/2 IRNI > 18% (16%)

Question 2

What is C-2

Answer 2

PR Rod Stop 1/4 PRNI >103%

Question 3

What is C-3

Answer 3

OT Delta T Rod Stop 2/4 PRNI 3% < trip Setpoint

Question 4

What is C-4

Answer 4

OP delta T Rod Stop 2/4 PRNI 3% < trip setpoint

Question 5

What is C-5

Answer 5

Turbine Power Interlock MPC-253 < 15%

Question 6

What is C-7A?

Answer 6

Load rejection bistable. 10% step change or sustained ramp decrease of a given magnitude for a long enough time period

Question 7

What is C-7B?

Answer 7

Load rejection bistable 30% step change. From turbine impulse pressure MPC-254. Arms steam dump valves for load rejection operation

Question 8

What is C-11

Answer 8

Control Bank D Rod Stop CBD @ 229 steps (cycle dependent)

Question 9

What is C-20?

Answer 9

2/2 Turbine impulse pressures (MPC-253 and 254) greater than 40% equivalent power “enables” AMSAC

Question 10

What does C-1, IR Rod Stop do and when can it be blocked?

Answer 10

Stops Auto and Manual Rod Withdrawl Blocked when IR range High Flux Trip is blocked (P-10) Auto unblocked

Question 11

What does C-2, PR Rod Stop do and when can it be blocked?

Answer 11

Stops outward rod motion in Auto and Manual Blocked when Rod Stop Bypass selected to alarming channel

Question 12

What does C-3, OT delta T Rod Stop do and when can it be blocked?

Answer 12

Stops outward rod motion in Auto and Manual Cannot be blocked

Question 13

What does C-4, OP delta T Rod Stop do and when can it be blocked?

Answer 13

Stops outward rod motion in Auto and Manual Cannot be blocked

Question 14

What does C-5, Turbine Power Interlock do and when can it be blocked?

Answer 14

Stops outward rod motion in AUTO only Cannot be blocked

Question 15

What does C-11, Control Bank D Rod Stop do and when can it be blocked?

Answer 15

Stops outward motion in AUTO only Cannot be blocked

Question 16

Which permissives are there really no status lights for?

Answer 16

P-4 and P-14

Question 17

What condition will make the P-4 Status Light “ON”?

Answer 17

Both Rx Trip Breaker A and Bypass Breaker A open OR Both Rx Trip Breaker B and Bypass Breaker B open. No actual light

Question 18

What is the function of the P-4 Status Light being “on”?

Answer 18

Combines w Low Tavg to give FWI

Seals in FWI from SI or Hi-Hi SG Level

Permits manual block of all automatic SI signals

Question 19

What condition will make the P4 Status Light OFF?

Answer 19

Either the Rx Trip or Bypass breaker is racked in and closed

Question 20

What is the function of the P-4 Status Light being “off”?

Answer 20

Prevents or defeats manual block of SI. No actual light

Question 21

What condition will make the P-6 Status light ON?

Answer 21

Any IR NI ≥ 10-10 amps and rising

Question 22

What is the function of the P-6 Status light being On?

Answer 22

Permits manual block of the SR High Flux Trip

Question 23

What condition will make the P-6 Status light OFF

Answer 23

Both IR NI channels < 6 x 10-11 amps and lowering

Question 24

What is the function of the P-6 status light being Off?

Answer 24

Prevents or defeats the manual block of the SR High Flux Trip

Question 25

What condition will make the P-7 Status light ON?

Answer 25

3/4 PRs \< 10% AND 2/2 Turbine 1st Stage pressures \<10% equivalent power

Question 26

What is the function of the P-7 Status light being On?

Answer 26

Permits automatic block of Rx trips due to the "at-power" trips

Question 27

What condition will make the P-7 Status light OFF?

Answer 27

2/4 PRs \> 10% OR 1/2 Turbine 1st stage pressures \>10% equivalent power

Question 28

What is the function of the P-7 status light being Off?

Answer 28

Prevents or defeats the automatic block of Rx trips due to the "at-power" trips w exception of turbine trip

Question 29

What can happen that meets P-7?

Answer 29

Reset of P-10 and actuation of P-13

Question 30

What condition will make the P-8 Status Light ON?

Answer 30

3/4 PRs less than or equal to 29%

Question 31

What is the function of the P-8 Status light being ON?

Answer 31

Permits the automatic block of Rx trips due to single loop low flow trips and turbine trip

Question 32

What condition will make the P-8 Status Light OFF?

Answer 32

2/4 PRs \> 29%

Question 33

What is the function of the P-8 Status light being OFF?

Answer 33

Prevents or defeats the automatic block of a Rx trip due to a single loop low flow trip and turbine trip

Question 34

What condition will make the P-10 Status light on?

Answer 34

2/4 PRs greater than or equal to 10%

Question 35

What is the function of the P-10 Status light being on?

Answer 35

Permits the manual block of: 1. PR High Flux Trip, Low Setpoint 2. IR Trip 3. IR Rod Stop Also: 4. Resets P-7 5. Backup deenergization of SR

Question 36

What condition will make the P-10 Status light OFF?

Answer 36

3/4 PRs \< 10%

Question 37

What is the function of the P-10 Status light being OFF?

Answer 37

Prevents or defeats the manual block of: 1. PR High Flux Trip, Low Setpoit 2. IR Trip 3. IR Rod Stop Also: 4. Inputs into P-7

Question 38

What does P-10 do?

Answer 38

De-Energizes Source Ranges

Question 39

What condition will make the P-11 Status light on?

Answer 39

2/3 PRZ pressure \< 1910 #

Question 40

What is the function of the P-11 Status light being on?

Answer 40

Permits manual block of SI actuation on low pressurizer pressure

Question 41

What condition will make the P-11 Status light off?

Answer 41

2/3 PRZ pressure greater than or equal to 1910 #

Question 42

What is the function of the P-11 Status light being off?

Answer 42

Prevents or defeats manual block of SI actuation on low pressurizer pressure

Question 43

What condition will make the P-12 Status light on?

Answer 43

2/4 Loops less than or equal to 541\*F

Question 44

What is the function of the P-12 Status light being on?

Answer 44

1. Allows manual block of SI due to Low Steam Line Pressure 2. Coincident w High Steam Flow, will give MSI 3. Blocks all Steam Dump Valves

Question 45

What condition will make the P-12 Status light off?

Answer 45

3/4 Loop Tavgs \> 541\*F

Question 46

What is the function of the P-12 Status light being off?

Answer 46

Prevents or defeats manual block of SI due to low steam line pressure

Question 47

What condition will make the P-13 Status light on?

Answer 47

2/2 Turbine 1st stage pressures \<10% equivalent

Question 48

What is the function of the P-13 Status light being on?

Answer 48

Input to P-7

Question 49

What condition will make the P-13 Status light off?

Answer 49

1/2 Turbine 1st Stage pressures \> 10%

Question 50

What is the function of the P-13 Status light being off?

Answer 50

Input to P-7

Question 51

What condition will make the P-14 Status light "on"?

Answer 51

2/3 SG NR levels \< 64% in all 4 SGs

Question 52

What is the function of the P-14 Status light being "on"?

Answer 52

Allows main feed water addition to SGs

Question 53

What condition will make the P-14 Status light "off"?

Answer 53

2/3 SG NR levels \> 67% in at least 1 SG

Question 54

What is the function of the P-14 Status light being "off"?

Answer 54

Prevents Main Feedwater addtion to the SGs by initiating a FWI and tripping both MFP turbines and the main turbine

Question 55

Which Permissives are normally lit at 100% Power?

Answer 55

P6 and P10

Question 56

What are the "at power trips" that reaching P7 permites the auto block of?

Answer 56

PZR Press Low PZR Level Hi RCS Loss of Flow UV RCP Busses UF RCP Busses RCP Breaker Position