EGS-Div 1 & 2 Flashcards
The plant is at rated power with the following conditions:
- Div II EDG is powering the Div II Emergency switchgear due to loss of line 6
- Service water supply transmitter 2SWP*PT66B fails downscale
With no operator action, which one of the following describes how the Div 2 EDG will respond?
a. Trips on High Lube Oil temperature
b. Trips on low SWP flow and pressure
c. Trips on Hi Jacket water temperature
d. Div 2 EDG continues to run
d. Div 2 EDG continues to run
LOOP on Div 1/2 start EDG in Emergency Mode
The EDG would be running without cooling though due to the fact that 2SWP*MOV66B will have automatically closed on low pressure.
Which one of the following describes the Division 1 and 2 diesel engines?
A. 16 Cylinder, 2 cycle.
B. 20 Cylinder, 2 cycle.
C. 16 cylinder, 4 cycle.
D. 20 cylinder, 4 cycle.
C. 16 cylinder, 4 cycle.
Which one of the following describes the automatic function(s) that are defeated when the Div 1 LOCA Bypass Switch is taken to the ON position?
A. Diesel starting only.
B. ECCS load starting only.
C. Diesel starting and ECCS loading.
D. Isochronous mode of diesel operation.
C. Diesel starting and ECCS loading.
For Division 1 only - the RCIC lockout in the trip valve is also bypassed, allowing for a remote reset of the RCIC turbine with a LOCA signal in.
An Operator is preparing to parallel Division 1 EDG to the bus. What indications are used to ensure the EDG picks up load when synced and does not experience a reverse power condition?
Synchroscope is rotating slowly in a clockwise direction with incoming and running voltages matched.
-You may also see this referred to as “Slow in Fast”
When would you establish a counterclockwise Synchroscope rotation while paralleling a Div1/2 EDG to Offsite?
Per OP 100A - Synchronize Diesel Generator AND Emergency Switchgear with Offsite Power
-IF Diesel Generator Load is greater than 2200 KW,
THEN perform the following:
a. Adjust GOVERNOR switch to establish slow counterclockwise rotation on SYNCHROSCOPE (slow in SLOW direction)
A loss of offsite power has occurred:
- 2EGS*EG3 trips on overspeed during start and cannot be started.
- 2EGS*EG1 & 2 operate as designed and power their respective buses.
Which one of the following lists includes ALL the ECCS Pumps that have power available?
1. RHS*P1A 2. RHS*P1B 3. RHS*P1C 4. CSL*P1 5. CSH*P1
A. 1, 4, and 5 only
B. 1, 2, and 3 only
C. 2, 3, 4, and 5 only
D. 1, 2, 4, and 5 only
A. 1, 4, and 5 only
The plant is operating at rated with the following:
The Division 1 EDG has been started and loaded to 4400 KW for the monthly surveillance
- An automatic scram due to rising DW pressure occurs - Then, 2 minutes later Lines 5 and 6 are lost
Which of the following correctly describes EGS*EG1 output breaker response to the LOCA then the LOOP?
LOCA LOOP A. Open Open B. Open Close C. Close Open D. Close Close
B. Open Close
When the LOCA occurs, the EDG Output breaker will open to protect the EDG from offsite power transients while the accident is in progress to ensure the EDG will carry the bus as designed upon a loss of offsite power.
The Division 1 EDG is running for a monthly surveillance and preparations are being made to parallel the EDG to the Bus.
- A false LOCA signal is sealed in on Division 1 due to a faulty relay.
What will happen when the Division 1 EDG Output Breaker is taken to close?
A. Breaker remains open
B. Breaker closes and immediately trips open
C. Breaker closes and trips open after a 30 second time delay
D. Breaker closes and remains closed
B. Breaker closes and immediately trips open
- A LOCA signal will not prevent closing the EDG Output breaker manually
- With a LOCA signal in and no Under-voltage Condition the Output breaker will trip open
The Div 1 EDG is running in parallel offsite power for testing when a complete loss of offsite power occurs. Which of the following describes the result to the offsite supply breaker and the mode of the EDG?
A. The Offsite Supply Breaker Opens on Directional Overcurrent ; Emergency Mode
B. The Offsite Supply Breaker Opens on Directional Overcurrent ; Test Mode
C. The Offsite Supply Breaker Opens due to Load Shedding ; Emergency Mode
D. The Offsite Supply Breaker Opens due to Load Shedding ; Test Mode
B. The Offsite Supply Breaker Opens on Directional Overcurrent ; Test Mode
When the LOOP occurs, the directional overcurrent will pick on the offsite supply breaker causing it to open. The EDG however will remain in test mode due to the fact that the bus remains energized(05ENS21). An undervoltage condition or a LOCA signal are required to put the EDG into Emergency Mode.
The plant is operating at rated:
• The electric plant is in a normal electrical plant lineup with 2ENSSWG102 being supplied from Line 6
• A loss of Line 6 occurs
• 2EGSEG2 and 2EGSEG3 have both started and energized their buses
Which one of the following are mode of operation of 2EGSEG2 and 2EGS*EG3 following this event?
2EGS*EG2 ; 2EGS*EG3 A. Test ; Test B. Test ; Emergency C. Emergency ; Emergency D. Emergency ; Test
B. Test ; Emergency
The Emergency Generator EG1 is being tested and the operator has just closed the diesel output breaker to parallel the generator to the bus, when he notices the following:
- EDG Frequency is 60 Hz
- EDG Kilowatts is 5 Kw
- EDG Kilovars is 1000 Kvar
Attempting to lower the Kvars on the generator, the operator inadvertently holds the Governor switch to LOWER. Describe the diesel generator response to this action?
The Governor controls the Kw loading, therefore the load will be reduced to 0, then the EDG would start “Motoring” To protect the EDG, the EDG output breaker will trip on generator reverse power.
- A loss of Offsite Power has occurred
- A DBA LOCA has occurred.
- 2EGS*EG1 is running at rated load.
- 2EGS*EG1 Fuel Oil Day Tank level is at the LO-LO level alarm setpoint
- Both Fuel Oil Transfer Pumps failed to start and cannot be started.
Which of the following is the approximate additional time that 2EGS*EG1 can continue to operate at its present load?
A. 1 to 2 hours
B. 6 to 8 hours
C. 1 to 2 days
D. 6 to 8 days
A. 1 to 2 hours
What is the bases for the sizing of the Standby Diesel Generator fuel oil storage tanks?
a. Enough fuel for 72 hours of continuous operation at full load.
b. Enough fuel for 7 days of continuous operation at full load.
c. Enough fuel for 14 days of continuous operation at full load.
d. Enough fuel for 31 days of continuous operation at full load.
b. Enough fuel for 7 days of continuous operation at full load.
Which one of the following describes the expected response of the Div II EDG if a loss of governor electrical power were to occur while running in test mode?
a. Governor would shift to emergency mode.
b. Diesel speed would rise slightly.
c. Diesel would immediately trip.
d. Diesel would continue to run unaffected.
b. Diesel speed would rise slightly.
The Electric Gov controls at 600 RPM, at 608 RPM, the Mechanical Gov takes over and will try to maintain speed below 608 RPM.
What is required to make the Division 1 EDG automatically run in the isochronous mode of operation
A LOCA signal in with the Normal and Alternate Offsite breakers open
