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WorksheetsSolid State Protection System
Total questions: 8
Worksheet time: 25mins
The Unit Supervisor has directed the Reactor Operator to perform a MANUAL Reactor Trip. When the Manual Reactor Trip Switch is manipulated, they operate the __________ in the reactor trip circuitry.
UV coils AND Shunt trip
UV coils ONLY
Shunt trip ONLY
Rod Drive MG Set Supply Breakers
Which one of the following causes C-8?
Turbine inlet pressure Low (1/1) OR Governor Valves Closed (2/4)
Turbine inlet pressure Low (1/1) OR Throttle Valves Closed (2/4)
EHC pressure < 1245.8 psig (2/3) OR Throttle Valves Closed (2/4)
EHC pressure < 1245.8 psig (2/3) OR Governor Valves Closed (2/4)
Which of the following will cause a Solid State Protection System Actuation Train Urgent alarm?
1. Loss of AC power to the Safeguards Test Cabinet
2. Safeguards Test Cabinet in TEST
3. Loose or removed circuit card
4. Actuation Train in TEST
1, 2, 3
1, 2, 4
1, 3, 4
2, 3, 4
Unit 1 is about to synchronize and close the MGB with Reactor Power at 16%.
Which of the following Reactor Trip signal is BLOCKED based on the above plant condition?
RCP UV
Pressurizer Low Pressure
Single Loop Loss of Flow
Pressurizer High Level
RCP undervoltage setpoint drifting _____(1)_____ is less conservative, the reactor is more likely to exceed _____(2)_____ limits.
(1) High
(2) DNB
(1) High
(2) fuel integrity
(1) Low
(2) DNB
(1) Low
(2) fuel integrity
Unit 1 Reactor Trip occurred due to a spurious Safety Injection signal that came in and then cleared.
- Reactor Trip Breaker Train S remained CLOSED
- Attempts to open Reactor Trip Breaker Train S from the control room and locally failed
Which ONE of the following statements is TRUE based on the existing plant conditions?
All equipment to be shutdown must be placed in the Pull To Lock (PTL) position. The SI signal cannot be reset from CP-001 under the existing conditions.
Control of equipment, which is to be shutdown, must be transferred to their respective transfer panels. SI must be manually actuated from CP-005 or CP-001 if required.
All actuation signals will reset normally at CP-001. If another automatic SI signal is received following reset of the existing signal, the operators will have to actuate SI manually.
Following reset of the Load Sequencers and the existing SI signal, all equipment may be shutdown normally. SI will be automatically actuated if another signal is initiated.
Following a Manual Reactor Trip:
- Reactor Trip Breaker R failed to OPEN
- Tavg is 572°F and lowering
Based on the above conditions, the MFW Pumps are _____(1)_____, and the MF Regulating Valves are _____(2)_____.
(1) TRIPPED
(2) OPEN
(1) TRIPPED
(2) CLOSED
(1) RUNNING
(2) OPEN
(1) RUNNING
(2) CLOSED
- Unit 2 is in MODE 3 heating up to NOT and NOP
- RCS Tavg is 485°F
- RCS pressure is 1905 psig
- SG pressure is 595 psig
A Steam Generator fault (steam line rupture) occurs and the following conditions exist:
- RCS pressure is 1235 psig
- Containment pressure is 6 psig
- SG pressure is 175 psig
Which of the following is correct concerning the above conditions?
Containment Spray actuated on High Containment Pressure.
Safety Injection actuated on Low Pressurizer Pressure.
Safety Injection actuated on Low Steam Line Pressure.
Main Steam Lines isolated on High Steam Pressure Rate.
