RPS

Question 1

State What PP powers inside SSPS

Answer 1

A Train SSPS: PP-1A and 1C,
A Train SSPS slave relays: PP-1A
B Train SSPS: PP-1B and 1D
B Train SSPS slave relays: PP-1B

Question 2

State ESF signals that are Energize to acuate

Answer 2

Containment HI-3 (CSAS) - 18#

RWST Lo-Lo level - 120478 gallons

Question 3

State how RX trip breakers respond on auto trip, manual trip and unique bypass feature

Answer 3

UV: All trips all breakers
Shunt: Auto trip for RTA and RTB only (not for manual)
When both bypass breakers are racked in and closed UV and shunt trips are activated
UV driver trips Same train Breaker and opposite train bypass.

Question 4

State the Three functions of RPS

Answer 4

Trips the RX
Actuate safeguards when conditions warrant
Activate permissive and automatic function blocks

Question 5

Discuss AMSAC

Answer 5

ATWS Mitigation System Actuation Circuitry
>20% power (PT-505/506) C-20
1 SG level on 3/4 <13% narrow range
Trips turbine and starts EFW

Question 6

Discuss SI Reset and Auto block

Answer 6

SI may be reset after 60 sec time delay
SI will be blocked if RX Trip breakers are open
To reenable SI, RX trip breakers must be cycled