RK: Plant Annunciator

Question 1

What does a repeating chime signify in the RK System?

Answer 1

Alarm

Question 2

What does a ringback signify in the RK System?

Answer 2

Alarm Clear

Question 3

What is the power supply for the Class portion of the RK System?

Answer 3

PKA or PKB

Question 4

Does the Class portion of the RK System have a backup?

Answer 4

No

Question 5

What does the ACKNOWLEDGE button do for the RK System?

Answer 5

Silences audible alarms

Question 6

What does the FLASHER RESET button do for the RK System?

Answer 6

Changes alarm window from fast flash to solid for an alarm that is still in.
Changes alarm window from fast flash to slow flash for an alarm that has cleared.

Question 7

What happens if an alarm reoccurs while the alarm window is in slow flash?

Answer 7

The alarm window will go solid with NO audible alarm.

Question 8

What does the LAMP RESET button do for the RK System?

Answer 8

Changes a slow flashing alarm window to off for an alarm condition that has cleared.

Question 9

What does the TEST button do for the RK System?

Answer 9

Tests alarms by simulating trouble contact actuations for all alarm windows on the associated control board.

Question 10

How many First Out Cabinets are there?

Answer 10

2 on Board 4
One for the Reactor
One for the Main Turbine

Question 11

What is the purpose for the First Out alarm function?

Answer 11

Permits the operator to differentiate between the first alarm received and any subsequent alarms

Question 12

From where does the Reactor First Out cabinet receive its inputs?

Answer 12

The Plant Protection System

Question 13

Can the Reactor First Out cabinet differentiate between a normal parameter and one that is bypassed?

Answer 13

No
If one parameter is in BYPASS in a tripped condition and another channel OF THE SAME PARAMETER trips, the Reactor First Out cabinet will think a reactor trip has occurred.

Question 14

How does an operator know what the first alarm was on a First Out cabinet?

Answer 14

The first alarm will be flashing faster than any other alarms received

Question 15

What is the priority for alarm windows in the RK System?

Answer 15

1 - Red - Rx Trips, ESFAS Actuations, LOP, PPS/ESFAS channel trips
2 - Green - Challenge to plant safety, unit or train availability
3 - Amber - mitigate potential radiation release
4 - White - early indication of system degradation

Question 16

What are isolators in reference to the RK System?

Answer 16

They separate the Class and Non-Class portions of the system

Question 17

What powers the Annunciator Cabinets RKN-C01 and RKN-C02?

Answer 17

RKN-C01 - Normal: NKN-D43
Backup: NNN-D15 = NHN-M06/NHN-M19

RKN-C02 - Normal: NKN-D42
Backup: NNN-D16 = NHN-M10/NHN-M20
/U3 [PHB-M38]

*Rule of “58”

Question 18

How does the RK System behave on a loss of power?

Answer 18

RK will automatically swap to backup power on a loss of the normal supply.
If power returns to the normal supply, RK will swap back (normal seeking)

Question 19

What happens if you lose NKN-M45 in conjunction with a SIAS in Unit 1?

Answer 19

All RK is lost

Question 20

What happens if you lose NKN-M45 in conjunction with a SIAS in Unit 2?

Answer 20

All RK is lost

Question 21

What happens if you lose NKN-M45 in conjunction with a SIAS in Unit 3?

Answer 21

Half of RK is lost

- Backup power to NNN-D16 in U3 is PHB-M38