EO 1 Block 1 Flashcards by Cody Rook

Which ONE of the following combinations describes the TWO purposes of the 345 KV distribution system?

Provide a normal power source for the Circulating Water Pumps and the
Reactor Coolant Pump’s at 100 % power.
Distribute power generated at the station for commercial use.
Provide an emergency source of power to essential 4160 VAC buses.
Provide a source of alternate power to station loads at 100 % power.

A. 1, 3
B. 1, 4
C. 2, 3
D. 2, 4

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ONE purpose of the 345 KV Distribution System is to provide input to the grid for financial income for First Energy.
Which ONE of the following is another purpose of the system at 100 % power?

A. Provide a source of EMERGENCY power to station DC loads.
B. Provide a source of EMERGENCY power to emergency lighting panels.
C. Provide a source of ALTERNATE power to station AC loads.
D. Provide a source of ALTERNATE power to the security diesel.

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Which ONE of the following combinations describes TWO purposes of the 345 KV distribution system?

Distribute power generated at the station for commercial use.
Provide an emergency source of power to essential 4160 VAC buses.
Provide offsite power via the startup transformers to the 13.8 KV buses during startup and shutdown.
Provide the normal power source for the Circulating Water Pumps and the Reactor Coolant Pumps at 100% power.

A. 1 and 2
B. 1 and 3
C. 1 and 4
D. 2 and 3

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Which one of the following substations tie directly to Davis-Besse’s 345 kV System switchyard?

A. Acme
B. Beaver Valley
C. Lindsey
D. Ohio Edison

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The Plant is being Shut Down per DB-OP-06902 Power Operations.
Current Reactor Power is 28% and stable at Low Level Limits.
The following breakers open:
ACB 34560
ACB 34564
What is the source of power to Startup Transformer 01?

A. Lemoyne Line
B. Bayshore Line
C. Main Generator
D. Ohio Edison Line

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During refueling outages, the Main Generator output breakers (ACB 34560 & 34561) are normally _____ and the Main Generator air break
switch (ABS 34620) is normally _______ .

A. open to prevent powering the Main Generator; open to prevent powering the Main Generator
B. closed to allow ring bus continuity; open to prevent powering the Main Generator
C. open to prevent powering the Main Generator; closed to allow Main Generator relaying to function
D. closed to allow ring bus continuity; closed to allow Main Generator relaying to function

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During EXTENDED shutdown operations with the main generator shutdown, which ONE of the following represents the condition of the generator output breakers, ACB 34560 and ACB 34561?

A. OPEN to prevent motoring the generator.
B. OPEN to ensure ring bus continuity.
C. CLOSED to ensure protective relay availability.
D. CLOSED to ensure ring bus continuity.

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During extended SHUTDOWN operations with the main generator shutdown, ACBs’ 34560 and 34561 are normally __________, ABS 34620 is normally __________, and Ground Switch 34645 is normally __________.

A. OPEN; OPEN; CLOSED
B. OPEN; CLOSED; OPEN
C. CLOSED; OPEN; CLOSED
D. CLOSED; CLOSED; CLOSED

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During normal 100 % power operations, ACB’s 34560 and 34561 are normally __________, ABS 34620 is normally __________, Ground Switch 34645 is normally __________.

A. CLOSED; CLOSED; CLOSED
B. CLOSED; OPEN; OPEN
C. OPEN; CLOSED; CLOSED
D. CLOSED; CLOSED; OPEN

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Which of the following combinations are all substations with DIRECT tie-in to Davis-Besse’s 345 KV switchyard?

Oak Harbor Feeder
Bayshore
Eastlake
Lemoyne
Ohio Edison-Beaver Substation

A. 1, 2, 4
B. 1, 3, 4
C. 2, 4, 5
D. 3, 4, 5

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What action would be required if the only source of power after a reactor/turbine trip caused by inclement weather is by backfeeding through the Main Transformer?

A. Disconnects at the Isophase system would have to be removed locally to prevent motoring the main generator when ACB34561 and ACB34560 are closed.
B. Ground switch 34645 must be close to prevent shock danger to plant personnel prior to closing ACB 34560 and ACB 34561
C. Main Generator must be taken off the turning gear and the rotor must be locked in order to prevent shaft from rotating when breakers ACB34560 and ACB34560 are closed.
D. Contact the dispatcher to have the Isophase disconnects open remotely prior to closing ACB34560 and ACB34561.

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Generator output breakers ACB 34560 and 34561 can be OPENED and can be CLOSED .

A. by the Load Dispatcher and, from the Control Room by the Load Dispatcher and from the Control Room

B. by the Load Dispatcher and, from the Control Room from the Control Room ONLY

C. from the Control Room ONLY by the Load Dispatcher and, from the Control Room

D. from the Control Room ONLY, from the Control Room ONLY

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Which ONE of the following identifies the purpose of SF6
gas in an Air Circuit Breaker?

A. Provides a backup supply to the operating air system.
B. Provides moisture absorption to keep operating air system dry.
C. Quenches the arc during OPENING and CLOSING operations.
D. Provides insulation at the phase interrupter and phase current transformers.

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Which ONE of the following indicates the location from which ALL air break switches and motor operated disconnects can be OPENED AND CLOSED?

A. Control Room
B. Relay House
C. System Dispatchers Office
D. Switchyard, at the components

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When CLOSING a 345 KV Air Circuit Breaker from the Control Room.
The synchroscope should be at the 12 o’clock position, rotating __________ and the synchronizing lamps should be ___________.

A. SLOW in the FAST direction; OFF
B. SLOW in the SLOW direction; ON
C. SLOW in the SLOW direction; OFF
D. SLOW in the FAST direction; ON

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Which ONE of the following describes the purpose of a RECLOSER switch in the relay house?

A. Allows for AUTOMATIC reclosure of an ACB.
B. Used to relay TRIP signals between breakers.
C. Prevents RECLOSURE of designated breakers during fault conditions.
D. Used to RECLOSE motor-operated disconnects in the event of a fault.

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When in the AUTO position, the RECLOSER switch in the relay house allows for AUTOMATIC reclosure of an ACB ____________________ following ____________________.

A. IMMEDIATELY, a TEMPORARY line fault.
B. after a set time delay, only a DIFFERENTIAL fault.
C. IMMEDIATELY, a PERMANENT line fault.
D. after a set time delay, ANY line fault.

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The Relay House switches that permit AUTOMATIC TRIP signals to be received from the Remote Line Relays or to be transmitted to the Remote Line Relays if required to TRIP the breaker are ___________ switches.

A. reclosure
B. carrier
C. transfer trip
D. control

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The Relay House switches that permit LINE-FAULT-TRIP blocking signals to be transmitted or received via coupling capacitor potential devices are __________ switches.

A. reclosure
B. carrier
C. transfer-trip
D. syncroscope

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Which ONE of the following conditions will result in annunciator 1-1-E, SU XFMR 01 LOCKOUT?

A. LOSS of DC annunciator power to Startup Transformer 01 cabinet.
B. LOW oil flow in the #1 oil cooler group for Startup Transformer 01.
C. Sudden pressure RISE inside Startup Transformer 01.
D. LOW Nitrogen pressure in Startup Transformer 01 Inertaire cylinder.

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Determine which ONE of the following control room annunciators will alarm if power is lost to MCC E22A.

A. SU XFMR 01 TRBL
B. SU XFMR 02 TRBL
C. XFMR CE1-2 TRBL
D. BUS E1 TRBL

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The following plant conditions exist:
* Reactor power is 70 % power
* Annunciator 1-1-F, AUX XFMER 11 LOCKOUT just alarmed coincident with numerous others.
* An EO reports that a fork lift has tipped over and its load has slammed into Auxiliary Transformer 11.
The expected plant response is for ACB 34560 & 34561 to be <>
and for the 13.8 Kv buses to be powered from <> .

A. open; Aux. 11 Xfmer with a load rejection in progress.
B. closed; the Startup Xfmers with the plant stabilizing at 70 % power.
C. closed; Aux. 11 Xfmer with a reactor/turbine trip present
D. open; Startup Xfmers with a reactor/turbine trip present

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The following plant conditions exist:
- 100% Normal Power Operation
- A Bus Reserve Source Selector Switch is in the 01 position.
- A Lockout has occurred on the “J” Bus.
- The plant has tripped due to Main Transformer Fault.
Which ONE of the following describes the status of “A” Bus?

A. “A” Bus is De-energized.
B. “A” Bus is powered from the 01 Transformer.
C. “A” Bus is powered from the 02 Transformer.
D. “A” Bus is powered from the Aux 11 Transformer.

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The following plant conditions exist:
- Plant at 100% power
- Normal 100% electrical lineup
A lockout on the J Bus occurs.
Which ONE of the following describes the status of A Bus?

A. A Bus is de-energized.
B. A Bus is powered from 02 Startup Transformer.
C. A Bus is powered form 01 Startup Transformer.
D. A Bus is powered from the Auxiliary 11 transformer.

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The following plant conditions exist:
· Reactor power is 100%.
· The station electrical line-up is normal for 100% power.
If 345 kV ACB 34560 develops a ground fault, but fails to open, which ONE of the following correctly describes the AUTOMATIC response of the 13.8 kV distribution system?

A. · 13.8 kV bus A is deenergized
· All 13.8 kV bus A Load Breakers are TRIPPED OPEN
· 13.8 kV bus B transfers its power supply to Startup Transformer X02

B. · 13.8 kV bus B is deenergized
· All 13.8 kV bus B Load Breakers are TRIPPED OPEN
· 13.8 kV bus A transfers its power supply to Startup Transformer X01

C. · 13.8 kV bus A is deenergized
· The associated RCP and circ. water pump breakers are TRIPPED OPEN
· 13.8 kV bus B transfers its power supply to Startup Transformer X02

D. · 13.8 kV bus B is deenergized
· The associated RCP and circ. water pump breakers are TRIPPED OPEN
· 13.8 kV bus A transfers its power supply to Startup Transformer X01

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Which ONE of the following will cause a LOCKOUT of startup transformer 02?

A. LOW oil level
B. HIGH winding temperature
C. A differential relay operation cause by a fault
D. Loss of 480V AC power to the cooling fans and pumps

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Which ONE of the following is the purpose of the Kirk Key interlock between the generator field breaker and the generator output ground switch (34645)?

A. Ensures ONLY qualified personnel operate the equipment.
B. Prevents UNAUTHORIZED personnel from operating the devices.
C. Prevents operation of EITHER component without the Shift Manager’s permission.
D. Prevents SIMULTANEOUS operation which would result in shorting the generator output to ground.

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The plant is operating at 100% power when annunciator 1-1-F, AUX XFMR 11 LOCKOUT, alarms. Which ONE of the following represents the effects on plant equipment?

A. * ACB 34560 and 34561 OPEN
* The turbine and main generator TRIP
* A and B busses fast dead transfer to startup transformers

B. * ACB 34560 and 34563 OPEN
* The main generator stays on line
* A and B busses fast dead transfer to startup transformers

C. * The ring bus remains intact (ACB 34560 and ACB 34561 remain closed)
* ABS 34620 (generator output) OPENS
* A and B busses deenergize.

D. * ACB 34561 and 34564 OPEN
* ABS 34620 (generator output) OPENS
* A and B busses deenergize

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If Air Circuit Breaker (ACB) 34560 received a TRIP signal but FAILED to OPEN, which ONE of the following sets of breakers would OPEN?

A. ABS 34620 and ACB 34561
B. ACB 34561 and ACB 34563
C. ACB 34562 and ACB 34564
D. ACB 34563 and ACB 34562

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If ACB 34560 received a trip signal but failed to open, which ONE of the following sets of devices would open?

A. ACB 34562 and ACB 34564
B. ACB 34563 and ACB 34562
C. ABS 34620 and ACB 34561
D. ACB 34561 and ACB 34563

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If ACB 34560 received a trip signal but failed to open, which ONE of the following sets of breakers would open?

A. ACB 34561 and ACB 34564
B. ACB 34562 and ACB 34563
C. ACB 34562 and ACB 34564
D. ACB 34561 and ACB 34563

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If ACB 34560, GENERATOR OUTPUT BREAKER, received a trip signal but failed to open, which one of the following sets of breakers would open?

A. ACB 34561 and ACB 34564
B. ACB 34562 and ACB 34563
C. ACB 34562 and ACB 34564
D. ACB 34561 and ACB 34563

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The plant is operating at 100% power. Due to improper maintenance on 345 kV switchyard breaker 34561, the “B” phase operating mechanism linkage on this breaker broke after the last breaker closure (closure successful), and will NOT respond to further electrical control signals. If the LOW air pressure system on this breaker develops a leak in excess of compressor makeup capacity, which ONE of the following describes the AUTOMATIC response of the plant?

A. Main generator TRIP, ACB 34560 TRIPS open, Bayshore line TRIP (TT), ACB 34562 TRIPS open, A & B Bus fast dead transfer to selected startup transformers.
B. NO AUTOMATIC actions occur, but an alarm annunciates in the CTRM.
C. ACB 34561 TRIPS open, along with its associated disconnect switches.
D. Main generator TRIP, ACB 34560 TRIPS open, LOCKOUT of SU XFMR 02, A bus fast dead transfers to SU XFMR 01, B bus is de-energized.

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The following plant conditions exist:
* The plant is operating at 100% power.
* All systems are in a normal lineup.
The following conditions occur:
* ACB 34562 tripped
* ACB 34564 tripped
* HX02A tripped
* HX02B tripped
A fault has occurred on __________.

A. J Bus
B. Main Transformer
C. Lemoyne Transmission Line
D. Ohio Edison Transmission Line

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The following plant conditions exist:
* 100% Power
* All systems are in a normal lineup
* B Bus Reserve Source Selector Switch is in the “X02” position
Due to a fire, a lockout occurs on the 02 Startup Transformer
Which ONE of the following describes the status of B Bus?
B Bus will <>.

A. be de-energized
B. transfer to the 01 Startup Transformer
C. transfer to the 02 Startup Transformer
D. remain powered from the Aux 11 Transformer

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Which ONE of the following identifies the correct location where the temperature in the switchyard is read for the switchyard rounds?

A. At the base of ACB 34564.
B. At the base of ABS 34620.
C. At the base of DCS 34560A.
D. At the south wall of the relay house.

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With the plant in Mode 1, which ONE (1) of the following conditions would NOT require entry into TS LCO 3.8.1, AC Sources-Operating?

A. DG 1 is declared INOPERABLE
B. Startup Transformer 01 locks out
C. Ring Bus Feeder from Lemoyne line is lost
D. 4KV Bus C locks out

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Match the conditions in the left column with the appropriate setpoint in the right column which will cause Annunciator 1-3-E, SU XFMR 01 TRBL, to alarm in the
Conrol Room.

____ 1. Hi Oil Temperature
____ 2. Hi Winding Temperature
____ 3. Pressure Relief Device
____ 4. Nitrogen Pressure Hi/Lo

A. 8.5 psig/-3 psig
B. 165°C
C. 117°C
D. 5.5 psig/-2 psig
E. 90°C
F. 8 psig

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The Main Transformer primary cooling group AUTOMATICALLY starts when__________ and AUTOMATICALLY stops when __________.

A. the exciter breaker CLOSES; the exciter breaker OPENS
B. the generator field breaker CLOSES; the generator field breaker OPENS
C. the FIRST generator output breaker CLOSES; the SECOND generator output breaker OPENS
D. the SECOND generator output breaker CLOSES; the SECOND generator output breaker OPENS

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Which ONE of the following statements describes an interlock between the Main Generator Field Breaker and the Main Transformer Cooling Groups?

A. Secondary Group must be MANUALLY stopped if it started on high winding temperature
B. Primary Group oil pumps AUTO START sequentially when the Generator Field Breaker is CLOSED
C. Secondary Group must be MANUALLY stopped if it started on high top oil temperature
D. Primary Group oil pumps AUTO START simultaneously when the Generator Field Breaker is CLOSED

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Which one of the following describes what occurs on a loss of NORMAL power to Aux 11 transformer auxiliaries?

A. Aux 11 LOCKS OUT/TRIPS.
B. Auxiliaries AUTO transfer to ALTERNATE supply of power.
C. The transformer REMAINS as is.
D. Actuation of a 13.8 KV bus fast dead transfer.

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Annunciator 16-3-C, MN XFMR 1 DNGR, will alarm in the Control Room if oil temperature INCREASES to _____°C or winding temperature INCREASES to _____°C.

A. 180, 90
B. 180, 135
C. 90, 180
D. 90, 135

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Which of the following identifies the Auxiliary 11 Transformer Nitrogen cylinder alarm pressure setpoint that will cause annunciator 1-3-F, AUX XFMR 11 TRBL, to alarm in the Control Room?

A. 200 psig
B. 300 psig
C. 400 psig
D. 500 psig

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Which ONE of the following conditions will result in Control Room annunciator 1-3-F, AUX XFMR 11 TRBL, being LIT?

A. Undervoltage
B. Pressure relief lifts
C. High oil temperature
D. Low oil level

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The following plant conditions exist:
* Reactor power is 100%.
* Alarm 16-3-C, MN XFMR 1 DNGR, actuates.
* An EO sent to the Main Transformer reports that the IDD Alert - Action is in alarm.
Which one of the following is the appropriate response to this situation?

A. Immediately trip the reactor and go to DB-OP-02000.
B. Reduce power to less than 40% power and trip the Turbine.
C. Contact the Electricians for verification and follow-up actions.
D. Preform a rapid shutdown to Low Level Limits, trip the reactor and go to DB-OP-02000.

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Which of the following combinations will lead to the greatest possibility of static electrification in the main transformer?

A. High oil flow rate at high oil temperatures.
B. High oil flow rate at low oil temperatures.
C. Low oil flow rate at low oil temperatures.
D. Low oil flow rate at high oil temperatures.

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Determine which ONE of the following annunciators would be received in the Control Room as a result of failure of Startup Transformer 01 due to static electrification.

A. SU XFMR 01 DNGR
B. SU XFMR 01 TRBL
C. BUS A LOCKOUT
D. J BUS DIFF

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EACH of the generator output breakers, ACB 34560 and 34561 has THREE (3) Control Room indicating lights at its respective Hand Indicating Switch.The green indicating light, when LIT, indicates that the breaker is __________ and the 2 red lights, when LIT, indicate that the breaker is __________

A. TRIPPED and power is available to the CLOSE coil;
CLOSED and power is available to BOTH TRIP coils.
B. TRIPPED and power is available to BOTH TRIP coils;
CLOSED and power is available to the CLOSE coil.
C. CLOSED and power is available to the TRIP coil;
TRIPPED and power is available to BOTH CLOSE coils.
D. CLOSED and power is available to BOTH TRIP coils;
TRIPPED and power is available to the CLOSE coil.

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Which ONE of the following sets of locations allows for opening ACB 34560 from EACH location within the set?

A. - System Dispatcher’s office
- Control Room
- Relay House
B. - Control Room
- Relay House
- Breaker Control Cabinet in the switchyard
C. - Relay House
- Breaker Control Cabinet in the switchyard
- System Dispatcher’s office
D. - Breaker Control Cabinet in the switchyard
- System Dispatcher’s office
- Control Room

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The ________________ allows for automatic reestablishment of the ring bus via closure of its associated breaker in the event of a momentary fault such as a lightning strike.

A. Carrier switch
B. Recloser switch
C. Feeder Line relaying
D. Transfer Trip switch

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The system is the DIRECT source of reliable electrical power to the 480 VAC nonessential distribution system.

A. 345 kV
B. 13.8 kV
C. 4160 VAC
D. 480 VAC essential

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With the plant in Mode 5, which of the following describes the normal source of power to 13.8 kV Bus B?

A. Main Transformer
B. Startup Transformer 1
C. Startup Transformer 2
D. Auxiliary Transformer 11

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The plant has been operating at full power for 9 months when annunciator 1-4-E, BUS A LOCKOUT goes into ALARM.
Which ONE of the following combinations of LIT alarms can be expected to be received coincident with a valid ground fault on A Bus?

A. · XFMR AC LOCKOUT, 1-1-D
· BUS C1 BKRS NTNM, 1-5-D
· BUS D1 BKRS NTNM, 1-5-H
B. · XFMR AC LOCKOUT, 1-1-D
· BUS C1 BKRS NTNM, 1-5-D
· BUS A BKRS NTNM, 1-5-E
C. · BUS C1 BKRS NTNM, 1-5-D
· BUS A BKRS NTNM, 1-5-E
· BUS B BKRS NTNM, 1-5-G
D. · BUS A BKRS NTNM, 1-5-E
· BUS B BKRS NTNM, 1-5-G
· BUS D1 BKRS NTNM, 1-5-H

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Which ONE of the following describes the purpose of HS9828, Bus C1 Undervoltage Trip Bypass?

A. DEFEAT the Loss of Voltage Relay (59% UV) TRIP for AC Transformer.
B. BYPASS the Degraded Voltage Relay (90% UV) TRIP feature on C1 Bus.
C. OVERRIDE the Loss of Voltage Relay (59% UV) TRIP for C1 Bus lockout circuitry.
D. INSERT a Degraded Voltage Relay (90% UV) TRIP setpoint into the C1 Bus control scheme.

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A LOCKOUT has occurred on A Bus.
Which ONE of the following describes the status of the “A” Bus breakers?

A. All load breakers and supply breakers open.
B. Load breakers and supply breakers are NOT affected.
C. Load breakers open, supply breakers are NOT affected.
D. Load breakers are NOT affected, supply breakers open.

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The plant is in Mode 3 with all electrical systems in a normal lineup.
Which ONE of the following will cause A Bus to automatically transfer to Startup Transformer 02?

A. Low oil level on Transformer 02.
B. A current differential on Transformer 01.
C. High winding temperature on Transformer Aux 11.
D. Loss of 480 VAC power to the cooling fans and pumps for Transformer Auxiliary 11.

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A ground fault has occurred on B bus. Which ONE of the following annunciators will NOT be received as a result of the event?

A. XFMR BD LOCKOUT (1-1-H)
B. BUS B LOCKOUT (1-4-G)
C. BUS B BKRS NTNM (1-5-G)
D. BUS F7 TRBL (1-5-J)

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Bus A is inadvertently deenergized due to a switching error during a plant shutdown. Which ONE of the following buses will be deenergized as a result of manually deenergizing A Bus?
A. C1 Bus
B. C2 Bus
C. F7 Bus
D. E1 Bus

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The plant is at 100% power. All systems are in a normal lineup.
A LOCKOUT of A Bus has occurred. Which ONE of the following describes the impact on the Electrical Distribution System?

A. - C1 fast transfers to BD transformer
- C2 is fed power from C1 bus
- Power is lost to E2 and E3 buses
- E5 continues to receive power from its normal source
B. - EDG-1 starts to supply power to C1 bus
- Power is lost to C2 bus
- E2 and E3 transfer to the alternate B bus supply
- Power is lost to E5
C. - C1 fast transfers to BD transformer
- Power is lost to C2 bus
- Power is lost to E2 and E3 buses
- E5 continues to receive power from its normal source
D. - EDG-1 starts to supply power to C1
- C2 is fed power from C1
- E2 and E3 transfer to the alternate B bus supply
- Power is lost to E5

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Which ONE of the following is the function of the undervoltage (UV) bypass pushbuttons?

A. Temporarily locks out the Emergency Diesel Generator.
B. Allows the Degraded Voltage Relay (90 % UV) Essential Bus load shed to be bypassed.
C. Allows the Loss of Voltage Relay (59 % UV) Essential Bus load shed to be bypassed.
D. Bypasses the Safety Features Actuation System start signal for the Emergency Diesel
Generator.

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Which ONE of the following describes the purpose of the 13.8 kV Distribution System?

A. Distribute generator output to the switchyard and to the station.
B. Directly provide power for 480 VAC non-essential distribution and to Emergency Core Cooling System components.
C. Directly provide an alternate source of power to the essential busses on a loss of the Emergency Diesel Generators.
D. Directly provide reliable power for 480 volt non-essential distribution, Reactor Coolant Pumps and the Circulating Water Pumps.

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The system is the DIRECT source of reliable electrical power to the 480 VAC nonessential distribution system.

A. 345 kV
B. 13.8 kV
C. 4160 VAC
D. 480 VAC essential

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The following plant conditions exist:
* The plant is operating at 100% power.
* Equipment is in a normal alignment.
The following actions automatically occur:
* HX11A opens
* HAAC opens
* AACC2 opens
* ABDC1 closes
This would occur as a result of which ONE of the following?

A. Ground on A Bus
B. Ground on B Bus
C. Overpressure on AC Transformer
D. Overpressure on BD Transformer

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Which ONE of the following Buses receives its source of power DIRECTLY from 13.8 kV Bus A?

A. 4160V Bus C1
B. 4160V Bus C2
C. 480V Bus F1
D. 480V Bus F2

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Which ONE of the following Buses receives its source of power DIRECTLY from 13.8 kV Bus B?

A. 4160V Bus C2
B. 4160V Bus D1
C. 480V Bus F1
D. 480V Bus F4

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With the plant at 100% power, which ONE of the following describes the NORMAL electrical power flowpath to 13.8 kV Bus A?

A. Main Generator Output via Auxiliary Transformer 11
B. 345 kV Bus J via Auxiliary Transformer 11
C. 345 kV Bus J via Startup Transformer 01
D. 345 kV Bus K via Startup Transformer 02

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With the plant in Mode 6, which ONE of the following is the NORMAL electrical power flowpath to 13.8 KV Bus B?

A. 345 kV Bus J via Auxiliary Transformer 11
B. 345 kV Bus K via Auxiliary Transformer 11
C. 345 kV Bus J via Startup Transformer 01
D. 345 kV Bus K via Startup Transformer 02

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Due to a fire in the #1 High Voltage Switchgear Room, it is decided to completely de-energize 13.8kV Bus A (Remove AC & DC Voltage sources). Which ONE of the following would accomplish this objective while minimizing the impact on the remaining plant equipment? Open HX01A, HX02A and HX11A. Open ____________

A. DAP02 and DAN02. Place ALL “A” Bus emergency control transfer switches in local.
B. the control power knife switch. Place the A Bus Reserve Source Selector switch in the 02 position.
C. DAP02, DAN02, HAAC, HAAE4, HAAE3 and HAAE2.
D. D1P02, D1N02, HAAC, HAAE4, HAAE3 and HAAE2.

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Which ONE of the following 13.8 kV breakers WILL trip due to an A Bus lockout; but WILL NOT trip due to an A Bus undervoltage?

A. 1-1 Reactor Coolant Pump Breaker (HA03)
B. Bus Tie Transformer AC Breaker (HAAC)
C. 1-3 Circ Water Pump Breaker (HA12)
D. Bus Tie Transformer BD Breaker (HBBD)

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Which ONE of the following local switches is still functional on A Bus with all of the Emergency Disconnect Switches in the REMOTE position?

A. Reserve Source Selector Switch
B. Breaker Hand Switch for HX01A
C. Synchronizing Switch for HX02A
D. Synchronizing Switch for HX11A

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Which ONE of the following describes the NORMAL source of power to A Bus during NORMAL operation at FULL power?

A. Auxiliary 11 Transformer
B. Startup Transformer 01
C. Startup Transformer 02
D. Main Transformer

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Match the source of DC control power in the right column with its associated load in the left column.

____ 1. A Bus Normal (source breakers)
____ 2. A Bus Alt (source breakers)
____ 3. A Bus Normal (load breakers)
____ 4. A Bus Alt (load breakers)
____ 5. B Bus Normal (source breakers)
____ 6. B Bus Alt (source breakers)
____ 7. B Bus Normal (load breakers)
____ 8. B Bus Alt (load breakers)

A. DAN
B. DBN
C. DBP
D. DAP

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Which ONE of the following explains the use of potential transformers in the 13.8 kV System?

A. Step down bus voltage to a value usable for metering and relaying.
B. Step down bus voltage to a value usable for a backup source of breaker control power.
C. Provide signal isolation to prevent a ground on one meter from affecting other indicators.
D. Provide a means of reducing system current to a value that allows easier transmission of power to system loads.

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Which ONE of the following is the NORMAL source of DC control power for 13.8 kV Bus A source breakers?

A. DAN
B. DBN
C. DBP
D. DAP

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Annunciator Alarm (1-4-G) BUS B LOCKOUT has just illuminated.
Which ONE of the following describes the status of the B Bus breakers?

A. All load and supply breakers open
B. Load and supply breakers are not affected
C. Load breakers open, supply breakers are not affected
D. Load breakers are not affected, supply breakers open

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Which ONE of the following conditions will cause Annunciator (1-4-E) BUS A LOCKOUT to alarm?

A. Bus A Overcurrent
B. Bus A Undervoltage
C. Bus A Underfrequency
D. Bus A High Temperature

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Which ONE of the following sets of pumps would stop running on an A Bus undervoltage?

RCP 1-1
RCP 1-2
RCP 2-1
RCP 2-2
Circ Water Pump 1
Circ Water Pump 2
Circ Water Pump 3
Circ Water Pump 4

A. 1, 3, 5, 8
B. 1, 4, 5, 7
C. 2, 3, 6, 7
D. 2, 4, 6, 8

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Which ONE of the following describes the function of the Undervoltage Bypass pushbuttons (HIS9828 and HIS9829)?

A. Bypasses the 90% undervoltage relays.
B. Bypasses the 59% undervoltage relays.
C. Temporarily locks out the Emergency Diesel Generator.
D. Bypasses the SFAS start signal to the Emergency Diesel Generator.

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The following plant conditions exist:
The plant is operating at 100% power.
What happens to the 13.8 kV buses on a degraded 345 kV grid frequency?

A. The bus locks out.
B. The bus automatically load sheds.
C. 13.8 KV bus automatically transfers to the source selected on the reserve source selector switch.
D. Tech. Spec. 3.8.1.1 requires frequency to be restored with four (4) hours or begin plant shutdown in the next six (6) hours.

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The following plant conditions exist:
* The plant is at 100% power.
* All systems are in a normal lineup.

The following event occurs:
* Lockout of A bus.

Which one of the following describes the impact on buses that are NORMALLY powered from A bus?

A. C1 fast transfers to BD transformer
C2 is fed power from C1
Power is lost to E2 and E3 buses
E5 continues to receive power from its normal source

B. EDG 1 starts to supply power to C1
Power is lost to C2
E2 and E3 transfer to the alternate B bus power supply
Power is lost to E5

C. C1 fast transfers to BD transformer
Power is lost to C2
Power is lost to E2 and E3 buses
E5 continues to receive power from its normal source

D. EDG 1 starts to supply power to C1
C2 is fed power from C1
E2 and E3 transfer to the alternate B bus power supply
Power is lost to E5

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The following plant conditions exist:
* The plant is at 100% power.
* All systems are in a normal lineup.
* Subsequently, a lockout of A bus occurs.

Which one of the following describes the impact on buses that are NORMALLY powered from A Bus?

A. C1 fast transfers to BD transformer
C2 is fed power from C1 bus
Power is lost to E2 and E3 buses
E5 continues to receive power from its normal source

B. EDG 1 starts to supply power to C1 bus
Power is lost to C2 bus
E2 and E3 fast transfer to the alternate B bus supply
Power is lost to E5

C. C1 fast transfers to BD transformer
Power is lost to C2 bus
Power is lost to E2 and E3 buses
E5 continues to receive power from its normal source

D. EDG 1 starts to supply power to C1
C2 is fed power from C1
E2 and E3 fast transfer to the alternate B bus supply
Power is lost to E5

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Which ONE of the following describes the function of the Bus C1 and D1 Undervoltage Trip Bypass pushbuttons (HIS9828 and HIS9829)?

A. Bypasses the Degraded Voltage relays
B. Bypasses the Loss of Voltage relays
C. Temporarily locks out the Emergency Diesel Generator
D. Bypasses the SFAS start signal to the Emergency Diesel Generator

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During MODE 1, full power operations, the NORMAL source of electrical power to essential 480 VAC substations E1 and F1 is ____________.

A. 13.8 KV Buses A and B via DIRECT feed to substation transformers for E1 and F1.
B. 13.8 KV Buses A and B which are fed from Startup Transformers 01 and 02.
C. 4160 VAC via C2 Bus and D2 Bus which are fed from C1 Bus and D1 Bus, respectively.
D. 4160 VAC via C1 Bus and D1 Bus which are fed from C2 Bus and D2 Bus, respectively.

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The purpose of a circuit breaker is: A fuse like device__

A. with no control features
B. that is reusable
C. that is reusable after repair.
D. only operated in emergencies.

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What is the purpose of a circuit breaker; A protective device_____

A. used to verify instrumentation is correctly functioning.
B. capable of making, carrying, and breaking currents by automatic means only.
C. that can only be closed, following a fault trip, manually.
D. used to provide quick connections and disconnections.

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Which ONE of the following sets contains components which are ALL fed directly from 4160 VAC bus C1?

Component Cooling Water Pump 1
Decay Heat Pump 1
Emergency Instrument Air Compressor
Makeup Pump 1

A. 1, 2, 3
B. 1, 2, 4
C. 1, 3, 4
D. 2, 3, 4

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Which ONE of the following sets contains components which are ALL fed directly from 4160 VAC bus C2?

Motor Driven Feed Pump
Startup Feed Pump
Switchyard Feeder #1
Backup Service Water Pump

A. 1, 2, 3
B. 1, 2, 4
C. 1, 3, 4
D. 2, 3, 4

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Which ONE of the following sets contains components which are ALL fed directly from 4160 VAC bus D1?

HPI pump 2
CTMT spray pump 2
DHR pump 2
Service Water pump 2

A. 1, 2, 3
B. 1, 3, 4
C. 1, 2, 4
D. 2, 3, 4

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Which ONE of the following sets contains components which are ALL fed directly from 4160 VAC bus D2?

Backup Service Water Pump
Motor Driven Feed Pump
Station Air Compressor #2
Aux. Boiler Forced Draft Fan

A. 1, 2, 3
B. 1, 2, 4
C. 1, 3, 4
D. 2, 3, 4

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Which ONE of the following is the normal power lineup for bus D1?

A. Bus D2 supplies bus D1 via AD110.
B. Bus C2 supplies bus D1 via AACD1.
C. Bus tie transformer BD supplies D1 via ABDC1.
D. Bus tie transformer AC supplies D1 via AACD1.

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Which of the below statements describe a condition for the use of the cross-tie breakers for the 4160 VAC essential buses (supplying both C1 & D1 from one Bus Tie Transformer)?

A. Both SU Transformers must be OPERABLE or declare one Offsite AC Source INOPERABLE.
B. Both SU Transformers must be OPERABLE or declare Onsite AC Distribution System INOPERABLE.
C. Operation in this configuration is not allowed at power (Modes 1-4) due to ETAP concerns with bus and transformer voltage drop.
D. There are no restrictions to this configuation based upon ETAP analysis of bus and transformer voltage drops.

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Which ONE of the following will occur on a Bus C1 lockout?

A. ALTERNATE supply breaker (ABDC1) CLOSES to energize the bus.
B. NORMAL supply breaker (AC110) remains CLOSED to keep the bus energized.
C. Emergency Diesel Generator 1 STARTS, but its output breaker (AC101) DOES NOT CLOSE.
D. Emergency Diesel Generator 1 STARTS, and its output breaker (AC101) CLOSES to reenergize the bus.

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Which ONE of the following describes the response of 4160 VAC breakers during LIVE MANUAL TRANSFER of C1 and C2 bus power sources?

A. With the busses being supplied from the NORMAL supply, closing the ALTERNATE supply breaker and then releasing its switch, will cause the NORMAL supply breaker to TRIP.
B. With the busses being supplied from the NORMAL source, the ALTERNATE supply breaker switch must be closed and held and then the NORMAL Source breaker tripped to avoid an inadvertent essential bus de-energization.
C. With the busses being supplied from the ALTERNATE supply, closing the NORMAL supply breaker and then releasing its switch, will cause the ALTERNATE supply breaker to TRIP.
D. With the busses being supplied from the ALTERNATE source, the ALTERNATE source breaker must be opened, and then the NORMAL source breaker closed to prevent cross-tying redundant class 1E power sources.

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Which ONE of the following describes the FIRST action that will occur when 4160 bus C1 voltage decreases to 88% of rated bus voltage?

A. UV 27A relays open all feeders to C1 bus.
B. UV 27 relays cause a transfer of C1 to BD transformer.
C. Transformer AC Danger / Trouble alarm occurs
D. Emergency Diesel Generator starts, but does not tie onto the C1 bus.

Which ONE of the following will occur on a bus C1 lockout?

A. NORMAL supply breaker (AC110) remains CLOSED to keep the bus energized.
B. EDG 1 starts but its output breaker (AC101) DOES NOT CLOSE.
C. ALTERNATE supply breaker (ABDC1) CLOSES to energize the bus.
D. EDG 1 starts and its output breaker (AC101) CLOSES to reenergize the bus.

The following plant conditions exist:
1. The plant is at 100% power.
2. A lockout has just occurred on “A” bus.
3. No other equipment malfunctions occur.
Which ONE of the following will result?

A. AC transformer will lockout.
B. A Bus will fast dead transfer to Startup Transformer 01.
C. C2 Bus will automatically load shed.
D. C2 Bus will lock out.

The following plant conditions exist:
* Bus C1 is being powered from ABDC1.
* Maintenance is being performed on AC110 which is racked out.
* The differential current relay actuates on HAAC breaker for AC
transformer.
Which ONE of the following describe the plant response?

A. Bus C1 will remain powered from BD transformer.
Bus C2 will fast dead transfer to BD transformer.
B. Bus C1 will de-energize until EDG 1 starts and re-energizes the bus. Bus C2 will be de-energized.
C. Bus C1 will remain powered from BD transformer.
Bus C2 will be de-energized.
D. Bus C1 will de-energize until EDG 1 starts and re-energizes the bus. Bus C2 will fast dead transfer to BD transformer.

Which ONE of the following is the expected response to the actuation of the Differential Current relay actuation on BD transformer?

A. Breaker HBBD closed
Breaker ABDC1 open
Breaker ABDD2 closed
Breaker AACD1 open
Alarm 1-2-H, XFMR DB DNGR/TRBL
B. Breaker HBBD open
Breaker ABDC1 closed
Breaker ABDD2 open
Breaker AACD1 open
Alarm 1-1-H, XFMR BD LOCKOUT
C. Breaker HBBD open
Breaker ABDC1 open
Breaker ABDD2 open
Breaker AACD1 closed
Alarm 1-1-H, XFMR BD LOCKOUT
D. Breaker HBBD closed
Breaker ABDC1 closed
Breaker ABDD2 closed
Breaker AACD1 closed
Alarm 1-2-H, XFMR BD DNGR/TRBL

On a loss of offsite power, the 90% undervoltage relay for Bus C1 failed to actuate. Which one of the following actions will occur following the start of EDG 1?

A. C1 bus will lockout.
B. AC101 (EDG 1 output breaker) will not close in.
C. AC101 (EDG 1 output breaker) will close in, reenergizing Bus C1 only.
D. C2 will reenergize when AC101 (EDG 1 output breaker) closes in due to AC110 remaining closed.

The following plant conditions exist:
* The plant is operating at 100%.
* EDG 1 has been running in parallel on C1 bus for 15 minutes.
* Make-Up pump 1 is running.
Breaker ABDC1, C1 ALTERNATE SOURCE BREAKER, control switch is
inadvertently taken to the close position and then released. Breaker ABDC1 will ________

A. close and AC110, C2 to C1 CROSS-TIE BREAKER, will open.
B. NOT close and AC101, EDG 1-1 OUTPUT BREAKER, will remained closed.
C. NOT close, and AC110, C2 to C1 CROSS-TIE BREAKER, will open.
D. close, and breaker AC101, EDG 1-1 OUTPUT BREAKER, will open

The following plant conditions exist:
* The plant has been operating at 100% power.
* EDG 1 is tagged out for replacement of its turbocharger.
* Makeup Pump 1 is tagged out for bearing replacement.
The following plant conditions are noted:
* The following annunciators are in alarm:
* 1-3-H, BUS D1 LOCKOUT
* 1-4-H, BUS D1 VOLTAGE
Which ONE of the following identifies the required course of action to be taken in the event that the problem CAN NOT be corrected?

A. Maintain present plant conditions and attempt to make repairs within 72 hours, at which time a shutdown is required to MODE 5.
B. Maintain present plant conditions and attempt to make repairs within 72 hours, at which time a shutdown is required to MODE 3.
C. Begin a plant shutdown within 1 hour and continue the shutdown until MODE 3 is reached at which time 72 hours is allowed for repairs.
D. Begin a plant shutdown within 2 hours and continue the shutdown until MODE 5 is reached, or repairs are made.

Which ONE of the following describes the breaker status for CCW Pump 3 and Service Water Pump 3 if BOTH pumps are in SPARE status.

A. * C1/D1 breakers RACKED OUT and Control Power fuses REMOVED.
* CD Switchgear breakers OPEN.
B. * C1/D1 breakers are OPEN.
* CD Switchgear breakers RACKED OUT and Control Power fuses REMOVED.
C. * C1/D1 breakers RACKED IN and Control Power Fuses REMOVED.
* CD Switchgear Breakers OPEN.
D. * C1/D1 breakers RACKED OUT and Control Power fuses REMOVED.
* CD Switchgear breakers CLOSED.

The plant is operating at full power, with the following Control Room indications present:
· CD SWGR indicating light ACD 3 is LIT (CCW pump 3)
· CD SWGR indicating light ACD 2 is OFF (CCW pump 3)
· AD 108, CCW pump 3 breaker green light is ON, red light OFF
· AC 108, CCW pump 3 is DNO’d for repairs
· SW pump 3 is DNO’d for repairs.
Which ONE of the following statements is correct concerning the lineup of the SW/CCW system? (Assume NORMAL equipment lineup).

A. SW pump 1 is RUNNING supplying PRIMARY leads; SW pump 2 is RUNNING supplying SECONDARY loads.
B. SW pump 1 is RUNNING supplying SECONDARY loads; SW pump 2 is RUNNING supplying PRIMARY loads.
C. CCW pump 2 is RUNNING, and SW pump 1 is supplying SECONDARY loads.
D. CCW pump 1 is RUNNING and SW pump 1 is supplying SECONDARY loads.

Which ONE of the following sets contains loads which are ALL supplied by the 4160 volt essential buses?

Service water pumps
Component cooling water pumps
Circulating water pumps
Makeup pumps

A. 1, 2, 3
B. 1, 2, 4
C. 1, 3, 4
D. 2, 3, 4

Which ONE of the following statements describes the Service Water and Component Cooling Water pump breaker interlocks at the essential 4160V and/or ‘CD’ switchgear AND the reason for the interlock?

A. The #3 SW pump ‘CD’ switchgear breaker (ACD4 - supply via C1) and #3 CCW pump ‘CD’ switchgear breaker (ACD2 - supply via C1) are interlocked so that only ONE can be CLOSED at a time. This prevents possible EDG overload.
B. The #3 SW pump breaker at C1 (AC 109) is interlocked with #3 SW pump breaker at D1 (AD 109) so that only ONE can be CLOSED at a time. This prevents crossconnecting buses C1 and D1.
C. The #3 SW pump breaker at C1 (AC 109) is interlocked with #3 CCW pump breaker at C1 (AC 108) so that only ONE can be CLOSED at a time. This prevents possible EDG overload.
D. The #3 CCW pump ‘CD’ switchgear breakers (ACD2 supply via C1, and ACD3 supply via D1) are interlocked so that only ONE can be CLOSED at a time. This prevents cross-connecting buses C1 and D1.

Which ONE of the following is the NORMAL DC Control Power for C1 Bus?

A. D1P
B. D2N
C. DAP
D. DBN

Which ONE of the following is the normal DC Control Power for D1 Bus?

A. D1P
B. D2N
C. DAN
D. D2P

From a normal electrical alignment, the following actions automatically occur:
- HAAC opens
- AACC2 opens
- ABDC1 closes
Which ONE of the following will NOT cause this to occur?

A. Bus A ground
B. AC transformer Hi winding temperature
C. AC transformer differential overcurrent
D. AC transformer ground.

To ensure that BOTH control power sources for essential 4160 VAC breakers are NOT energized at the same time, __________________.

A. a KIRK KEY interlock is provided.
B. an ELECTRICAL interlock is provided.
C. a MECHANICAL sliding bar interlock is provided.
D. FUSE PROTECTION is provided with indicating lights.

Which ONE of the following statements is correct concerning CONTROL POWER TRANSFER for essential 4160 VAC breakers?
During the time of the transfer __________.

A. the ONLY way a breaker can be TRIPPED is from the Control Room switch
B. the ONLY way a breaker can be TRIPPED is through AUTOMATIC protection
C. BOTH control power breakers are CLOSED at the same time to ensure continuity of control power
D. BOTH control power breakers are OPEN at the same time to ensure NO cross connection of control power sources

Match the following items in the left column to the appropriate response from the
right column.

____ 1. Normal DC control power C1
____ 2. Normal DC control power D1
____ 3. Normal DC control power C2
____ 4. Normal DC control power D2

A. D1P
B. D2N
C. D2P
D. DAN
E. DBN
F. DAP
G.

The following plant conditions exist:
* The plant is at 100% power.
* All systems are in a normal lineup.
* A lockout of C1 bus occurs.
* EDG 1 was stopped using the Emergency Shutdown Pushbutton.
A plant shutdown must be started within:

A. one hour in accordance with Technical Specification 3.0.3.
B. two hours in accordance with Tech. Spec. 3.0.5.
C. eight hours in accordance with Tech. Spec. 3.8.2.1
D. seven days in accordance with Tech. Spec. 3.8.1.1.

What will happen when “A” or “B” High Voltage Switchgear room exceeds 104°F?

A. Nothing happens.
B. There is no warning and the lights go out.
C. There is a warning bell followed by the lights going out.
D. The Control Room receives a computer alarm indicating high temperature in the switchgear room.

You are the Zone 2 Operator, during turnover it was reported I&C was to do testing in this switchgear room. When you enter the “B” High Voltage Switchgear room you immediately identify
there are NO lights in this room.
What is/are the possible causes of this condition?

A. The I&C technicians tripped the lighting panel fuse.
B. The high temperature ambient conditions caused the lights to fail.
C. The Control Room reported a Non-Radwaste Ventilation had tripped, which caused the lights to immediately fail
D. The high temperature circuit was activated.

You have been assigned to rack in a 4160 VAC breaker following a
maintenance operation. Electricians have placed the breaker in the normal racked out configuration following their post-maintenance checks. What MINIMUM classification of electrical glove should you use in order to perform your assigned task?

A. Class 00
B. Class 0
C. Class 1
D. Class 2

The following plant conditions exist:
* The plant is at 100% power. ICS is in full automatic.
* CCW 3 Pump is in standby as CCW 1 Pump.
* CCW Pump 1 breaker is racked in following maintenance activities.
* CCW Pump 2 is running.
* A loss of offsite power occurs.
* All equipment operates as designed.
Which one of the following describes the action required to ensure CCW is operating correctly?

A. Verify #3 and #2 CCW Pumps start after their respective EDG output breakers close.
B. Verify #1 and #2 CCW Pumps start after their respective EDG output breakers close.
C. Verify all three CCW Pumps start after output breakers for their respective EDG close.
D. Verify #2 CCW Pump starts and trip one of the two CCW Pumps running on C1 bus after their respective EDG output breakers close.

The plant is at 100% power.
* Emergency Diesel Generator Air Receiver 2-1 has been isolated and
depressurized for maintenance.
* Emergency Diesel Generator Air Receiver 2-2 pressure is 235 psig.
The result of this action is:

A. Enter Tech Spec 3.8.1 for an inoperable EDG AND Tech Spec 3.8.3 for an inoperable Air Start system.
B. Enter ONLY Tech Spec 3.8.3 for an inoperable Air Start system.
C. Enter ONLY Tech Spec 3.8.1 for an inoperable EDG.
D. NO Tech Spec entry is required.

The DSA, DSB and DS1 (ISOL. SWITCH, APPENDIX R. AB 1203.02) switches for SW pump #1 are ALL placed in LOCAL. SW pump #1 will start _____________________.

A. on an SFAS actuation
B. following an EDG start
C. from the Control Room
D. from its control switch in the SW pump room

Which ONE of the following occurs if overcurrent on bus C-1 (51 relays and 86 lockout relay) occurs?

A. Normal supply breaker (AC110) remains shut to keep the bus energized.
B. 1-1 EDG starts but its output breaker does not close.
C. Alternate supply breaker (ABDC1) closes to energize the bus.
D. 1-1 EDG starts and its output breaker closes to reenergize the bus.

Following plant conditions exist:
MODE 5
RCS at 125 psig
RCS at 120°F
#1 Component Cooling Water pump is running
#2 Component Cooling Water pump is aligned to standby.
Given the above conditions what is the alignment of the CD Switchgear breakers for #3 Component Cooling Water Pump?

A. ACD 2 is CLOSED with control power removed.
B. ACD 2 is OPEN with control power installed.
C. ACD 2 is CLOSED with control power installed.
D. ACD 2 is OPEN with control power removed.

During an outage, Bus C1 will be isolated (deenergized) for maintenance. What would be the adverse consequence of NOT closing #1 EDG air start valves prior to Bus C1 isolation?

A. EDG #1 will lockout
B. Bus C1 will lockout
C. EDG #1 will start
D. EDG #1 will not start when required.

Following plant conditions exist:
* Mode 1, 100% Power, Normal Operations
* Emergency Diesel Generator maintenance activity scheduled.
* The clearance issued for this work has AD 101, EDG 2 output breaker, tagged open. No other tags have yet been hung in the field.
* Immediately following this tag being hung a loss of offsite power occurs.

What is the expected response of this Emergency Diesel Generator?
The Emergency Diesel Generator will start ________________

A. and run at 900 RPM with no cooling.
B. and operate at 450 RPM with cooling.
C. and trip due to output breaker failing to close.
D. and trip due to D1 undervoltage relay being tripped.

The following conditions exist:
* Loss of Offsite Power has occurred.
* EDG 2 starts due to the low voltage on D1 bus.
* AD 101, EDG 2 Output Breaker, fails to close
What is the expected response of EDG 2?
The EDG will _______________________ .

A. trip due to high jacket water temperature
B. run at 450 RPM with NO cooling
C. run at 900 RPM with no cooling
D. trip due to overspeed.

The CLOSE control power fuses for Service Water Pump #1 are being installed.
Which ONE of the following describes how proper installation is verified?
A. A Computer Point will alarm.
B. The green control switch lights for SW Pmp #1 will come on.
C. A click will be heard at the breaker when the fuses are inserted (“39” relay energized).
D. SW pump #1 breaker will close in when the fuses are inserted

After the CLOSE control power fuses are inserted into SW pump #1 breaker, the “Spring Charge failure relay” (“39” relay) does not energize (click). Which ONE of the following describes the system response?

A. Control room green and red indicator lights for SW pump #1 will be out.
B. SW Pump #1 breaker green and red indicator lights will be out.
C. SW pump #1 will start 40 seconds after EDG #1 starts.
D. SW pump #1 will NOT start on SFAS Level 2.

After the close control power fuses are inserted into CCW Pump 1 breaker, the “Spring charge failure relay” (“39” relay) does NOT energize (click). Which ONE of the following sets of these listed statements is correct?

CCW pump 1 will NOT start from the Control Room
CCW pump 1 will NOT start on an SFAS level 2
The red and green indicator lights for CCW Pump #1 will be out in the Control Room.
A computer alarm will indicate this condition.

A. 1, 2, 3
B. 1, 2, 4
C. 1, 3, 4
D. 2, 3, 4

The plant is in Mode 1 when the following Control Room alarms annunciate:
- BUS D1 LOCKOUT (1-3-H)
- BUS D1 VOLTAGE (1-4-H)
- BUS D1 BKRS NTNM (1-5-H)
- BUS F1 TRBL (1-5-I)
These alarms indicate a ground fault on ___________.

A. 13.8 kV Bus B
B. BD transformer
C. Transformer DF1-1
D. 4.16 kV Bus D1

Determine the correct electrical line-up for supplying power to C1 Bus.

A. EDG 1 to C1.
B. EDG 2 to D1 to C2 to C1.
C. 02 Startup Transformer to B Bus to C2 to C1.
D. 02 Startup Transformer to A Bus to C2 to C1.

Which ONE of the following could result if an RCP is restarted without using the associated 4160V Essential bus (C1/D1) undervoltage bypass switches?

A. A (B) bus will be tripped and locked out.
B. C1 (D1) bus will be tripped and locked out.
C. AC110 (AD110) for Bus C1 (D1) will trip.
D. AACC2 (ABDD2) for Bus C2 (D2) will trip.

From a normal electrical alignment, the following actions automatically occur:
- AC 110 opens
- AACC2 opens
- ABDC1 closes
This would occur as a result of which ONE of the following?

A. Bus C1 overcurrent
B. Bus C2 overcurrent
C. Bus C1 under voltage
D. Bus C2 under voltage

Which ONE of the following will cause a fast transfer of C1 bus to the BD transformer?

A. Undervoltage on C2 bus
B. 59% undervoltage on C1 bus
C. 90% undervoltage on C1 bus
D. Ground fault on A bus

Which of the following breakers will NOT open (if previously closed) in response to D1 Bus undervoltage?

A. AD110 Crosstie to Bus D2
B. AD105 #2 Makeup Pump motor
C. AD1DF12 feed to transformer DF12
D. AD107 #2 Service Water Pump motor

The purpose of the Emergency Diesel Generator (EDG) is to provide
_______________.

A. an alternate source of power to essential buses C1 and D1 under emergency conditions.
B. a normal source of power to essential buses C1 and D1 under normal conditions.
C. an alternate source of power to non-essential buses C2 and D2 under emergency conditions.
D. a normal source of power to non-essential buses C2 and D2 under normal conditions.

The following conditions exist:
♦ Reactor TRIPPED
All other systems have responded as designed.
The power supply to Containment Air Cooler 1 in this situation is .

A. Auxiliary Transformer 11
B. Startup Transformer 01
C. Emergency Diesel Generator 1
D. Station Blackout Diesel Generator

Which of the following describes why the operator is cautioned NOT to start and load an Emergency Diesel Generator if the Station Blackout Diesel Generator is also loaded?

A. A loss of offsite power with two of three emergency power sources running may cause a loss of both engines.
B. Running two diesels simultaneously in parallel with the grid will cause local grid frequency oscillations.
C. Two diesels running in the “droop” mode will cause large voltage fluctuations between the generators.
D. If the Emergency Diesel Generator trips it will immediately overload the Station Blackout Diesel Generator.

The following plant conditions exist:
- An undervoltage condition occurs on C1 bus.
- Emergency Diesel Generator 1 automatically starts.
Which ONE of the following 4160 VAC bus loads should start or energize IMMEDIATELY when the Emergency Diesel Generator 1 output breaker (AC101) closes?

A. 480 VAC Bus E1.
B. Makeup pump, if previously running.
C. Service Water pump, if previously running.
D. Component Cooling Water Pump, if previously in standby.

The following events occur:
1. A Loss of Coolant Accident is in progress.
2. A loss of offsite power occurs.
3. Both Emergency Diesel Generators START and power their
respective buses.
4. Safety Features Actuation System Channels 1 and 3 load sequencers fail to remove ANY of the sequencer block signals.

Under these conditions, which ONE of the following pumps will be running immediately following these events? Assume that all were running PRIOR to the loss of offsite power.

A. Component Cooling Water Pump 1
B. High Pressure Injection Pump 1
C. Low Pressure Injection Pump 1
D. Service Water Pump 1

Which ONE (1) of the following Emergency Diesel Generator protective features is BYPASSED on an automatic start of the Emergency Diesel Generator?

A. Overspeed
B. Fail to start
C. Reverse power
D. Generator bus differential

The following plant conditions exist:
* A LOCA is in progress.
* RCS pressure is 250 psig and stable.
The following events then occur:
* A loss of offsite power occurs.
* Both EDGs start and power their respective buses.
* SFAS Channels 1 and 3 load sequencers fail to remove any of the sequencer block signals.
Under these conditions, which one of the following pumps will be running immediately following these events?

A. CCW Pump 1
B. HPI Pump 1
C. LPI Pump 1
D. Service Water Pump 1

The following plant conditions exist:
- The plant is at 100% power.
- Component Cooling Water Pump 2 is running.
- Component Cooling Water Pump 1 is in standby.
- Makeup Pump 1 is running.
A lockout of D1 Bus occurs. Emergency Diesel Generator 2 will __________.

A. start and will NOT have Component Cooling Water cooling
B. NOT start because of the lockout
C. start and supply D1 Bus
D. NOT start because Component Cooling Water cooling is unavailable

The following sequence of events have occurred:
* An RO has just depressed the C1 and D1 undervoltage bypass
pushbuttons.
* A secondary RO has turned the pistol grip for Circ. water pump 1 to the start position.
* Circ. water pump 1 has caused a fault on A bus.
* Buses C1 and C2 have failed to fast dead transfer to BD transformer.
Which ONE of the following describes the affects on the electrical system if the RO fails to release C1 and D1 undervoltage bypass pushbuttons?

The depressed pushbuttons will ____________.
A. have no affect on the EDGs
B. NOT allow the EDGs to start
C. allow the EDGs to start, but the output breakers will not close
D. prevent the operation of the sequencers

Which ONE of the following is the normal DC control power source for EDG 1-1?

A. D1N
B. D1P
C. Y1
D. Y3

What is the response of the breaker for the running Makeup Pump breaker on a Loss Of Offsite Power?

A. The breaker opens on undervoltage and remains open.
B. The breaker stays closed and the Makeup Pump starts when the Emergency Diesel Generator breaker closes.
C. The breaker initially opens, then closes back in 2.5 seconds after the Emergency Diesel Generator breaker closes.
D. The breaker stays closed but will trip if the Emergency Diesel Generator output breaker does not close within 100 seconds.

The following plant conditions exist:
* The plant is operating at 100% power.
* DB-SC-03070, Emergency Diesel Generator (EDG) 1 Monthly Test, is in progress.
* EDG 1 is paralled to the grid.
* EDG 1 load is 2550 KW.
The following event occurs:
* A Loss of Offsite Power (LOOP).
* No operator actions have been taken.
AC101, EDG 1 Output Breaker to C1, will ___________.

A. NOT open and provide power to C1 and C2
B. NOT open and EDG 1 will run in parallel with the Main Generator
C. open on reverse power and NOT reclose
D. open on reverse power and then reclose

The following plant conditions exist:
* Emergency Diesel Generator 1 monthly surveillance test is in progress
* Emergency Diesel Generator 1 is paralleled with the C1 bus
A Safety Features Actuation System Level 2 signal occurs
Which one of the following is the MOST LIKELY consequence assuming no operator action is taken?

A. The Emergency Diesel Generator governor will transfer to the isochronous mode and all engine trips will be active
B. The Emergency Diesel Generator governor will remain in the droop mode and all engine trips will remain in active
C. The Emergency Diesel Generator governor will remain in the droop mode and non-vital engine trips will be bypassed
D. The Emergency Diesel Generator governor will transfer to the isochronous mode and non-vital engine trips will be bypassed

The Station Blackout Diesel Generator is running supplying D2 Bus in parallel with the grid for surveillance testing.
Which of the following sets of conditions will actuate relays to trip the Station Blackout Diesel Generator output breaker but will NOT trip the engine.

Reverse power
High Crankcase pressure
Low lube oil pressure
Field failure
Negative phase sequence
High jacket water temperature

A. 1, 2, 3
B. 3, 5, 6
C. 2, 4, 6
D. 1, 4, 5

The plant was at 100% power.
* A loss of off-site power has occurred.
* The Station Blackout Diesel Generator has been started from the Control Room and is supplying D2 Bus.
Which one of the following set of conditions will automatically actuate relays to TRIP the SBODG ENGINE in this situation?

High Jacket Water temp
High Crankcase press
Overspeed
Low Lube Oil press
Generator/Bus Differential fault
Transformer DF8 Lockout

A. 1, 2, 3
B. 1, 4, 5
C. 2, 4, 6
D. 3, 5, 6

The plant was at 100% power.
* A RCS leak is in progress.
* Reactor has tripped.
* SFAS Level 2 has actuated on low RCS pressure.
* Offsite power is supplying all electrical loads.
Which one of the following conditions will cause Emergency Diesel Generator 1 engine to automatically TRIP?

A. An inadvertent actuation of the 86-1 relay
B. An inadvertent actuation of the 86-2 relay
C. A loss of power to the DC Motor Driven Fuel Oil Pump
D. A loss of control power to the EDG output breaker

The following plant conditions exist:
* Emergency Diesel Generator 1 monthly surveillance test is in progress
* Emergency Diesel Generator 1 is paralleled with C1 bus
The blue warning light actuates 30 minutes into the Emergency Diesel Generator run due to an inadvertent SFAS actuation.
Which ONE of the following system responses is the most likely to occur, assuming no operator action is taken?

A. The Emergency Diesel Generator output breaker may trip on reverse power and then automatically reclose
B. The Emergency Diesel Generator will continue to run in parallel and remain in the droop mode since offsite power was not lost
C. The Emergency Diesel Generator output breaker will trip on low voltage as SFAS loads are started on C1 Bus
D. The Emergency Diesel Generator may exceed rated load limits due to transferring to the isochronous mode

The plant is at 100% power with all systems in a normal lineup.
* The monthly surveillance test for Emergency Diesel Generator 1 is in progress. While paralleling and loading Emergency Diesel Generator 1, a reverse power trip occurs.
As a result of the reverse power trip the generator output breaker opens and the <>.

A. engine trips
B. generator field is shorted
C. generator frequency goes to ≈63 Hz
D. engine goes to idle speed

Which ONE of the following parameters will result in an AUTOMATIC TRIP of the Emergency Diesel Generator following an SFAS level 2 actuation?

A. High Jacket Cooling water temperature
B. Low Lube Oil pressure
C. Reverse Power relay actuation
D. Differential Overcurrent relay actuation

Which ONE of the following parameters will result in an AUTOMATIC TRIP of the Emergency Diesel Generator during a NORMAL start?

A. Jacket cooling water temperature at 195°F
B. Lube oil pressure at 30 psig
C. Crankcase pressure at 0.5 inches H2O
D. Engine speed at 1040 rpm

The emergency diesel generator is running after receiving an AUTOMATIC start signal.
Which ONE of the following 86-2 protective functions will result in an EDG LOCKOUT if its setpoint is exceeded?

A. High jacket water temperature
B. High differential overcurrent
C. High crankcase pressure
D. Low lube oil pressure

The following events have occurred:
* A LOCKOUT of bus C1 has occurred due to a ground fault.
* Emergency Diesel Generator 1 has been TRIPPED using the
EMERGENCY SHUTDOWN pushbutton.
* The cause of the ground fault has been located and corrected.
Which ONE of the following will be the result of resetting the C1 bus lockout?

A. The NORMAL supply breaker will AUTO CLOSE and pick up the bus.
B. The ALTERNATE supply breaker will AUTO CLOSE and pick up the bus.
C. The bus will remain unpowered until the time delay for the Emergency Diesel Generator Lockout Relay times out.
D. The bus will remain unpowered until the operator MANUALLY RESETS the Emergency Diesel Generator Lockout Relay.

Plant conditions are as follows:
o After running EDG 1 at rated load, the operator depressed the IDLE STOP pushbutton.
o The EDG has been running at 450 rpm for 1 minute.
Which ONE of the following describes the action/ condition that will result in a RESTART of the EDG to rated speed and voltage?

A. At the Local Electrical Panel the Equipment Operator momentarily depresses the START pushbutton.
B. In the Control Room the Reactor Operator momentarily depresses the START pushbutton.
C. The operator transfers the Field Flash Selector Switch from 800 RPM to 400 RPM.
D. An undervoltage condition occurs on C1 Bus.

What is the EDG governor speed setpoint set at after the EDG is stopped from idle speed?

A. 450 RPM
B. 900 RPM
C. 945 RPM
D. 1035 RPM

The following plant conditions exist:
* Loss of offsite power
* Reactor trip
* Reactor Coolant System Pressure - 2150 psig
Reactor Coolant System TAVE * - 550°F
* Steam Generator pressures - 990 psig
* Steam Generator levels - 49 inches
* Emergency Diesel Generator 1 supplying power to C1 bus
* EDG 2 supplying power to D1 bus
Which ONE of the following indicates the expected response of Emergency Diesel Generator 2 to a loss of power to its speed control circuit?
Emergency Diesel Generator 2 will ______________.

A. go to zero rpm
B. go to idle speed
C. remain at 900 rpm
D. go to high speed stop

The following plant conditions exist:
* The plant is shutdown.
* A Loss of Offsite Power occurred.
* Emergency Diesel Generator 2 is running after receiving an AUTOMATIC start signal.
Which ONE of the following protective functions will result in an Emergency Diesel Generator trip if its setpoint is exceeded?

A. HIGH Jacket water temperature
B. HIGH generator differential
C. HIGH crankcase pressure
D. LOW lube oil pressure

Which of the following lockouts are bypassed on an automatic start of the Emergency Diesel Generator?

A. Overspeed
B. Reverse power
C. Fail to start
D. Generator bus differential

The plant was at 100% power.
The following events have occurred:
* C1 was inadvertently de-energized
* EDG 1 automatically started and has re-energized C1 Bus
Which one of the following actions will be required to parallel C1 Bus back to C2 Bus?

A. Transfer the FIELD FLASH SELECT Switch from 400 RPM to 800 RPM
B. Transfer the EMERGENCY CONTROL TRANSFER Switch from NORMAL to LOCAL
C. Transfer the GOVERNOR MODE Switch from ELECT to HYDRAULIC
D. Transfer the HS SYNC 1 Switch 1 from NORMAL to SYNCH

The SBODG tripped on overspeed.
* The SBODG problem has been fixed.
* An Operator reports that he has reset the SBODG overspeed trip.
You have been assigned to verify the SBODG overspeed trip is reset.
Which one of the following would you use to verify the SBODG trip is reset?
Verify the Reset Lever is in the ______ o’clock position and the limit switch is contacting the _____ side of the Reset Lever.

A. 9
TOP
B. 9
UNDER
C. 11
UNDER
D. 11
TOP

A(n) _______ warning light flashes in the EDG room to alert the operator that a safety start signal is present.

A. Amber
B. Blue
C. Green
D. Red

Control Room annunciator 1-3-J, EDG 2 CCW FLOW LO setpoint is
__________________.

A. 500 gpm
B. 800 gpm
C. 1000 gpm
D. 1500 gpm

Control Room annunciator 1-3-K, EDG 2 FREQUENCY alarm setpoints are __________________.

A. 110% and 115% of rated frequency.
B. 95% and 105% of rated frequency.
C. 90% and 95% of rated frequency.
D. 85% and 90% of rated frequency.

Which ONE of the following will AUTOMATICALLY shutdown the Emergency Diesel Generator following an SFAS Level 2 actuation?

A. Reverse power
B. High crankcase pressure
C. Generator differential overcurrent
D. High jacket water temperature

Which ONE of the following indications is NOT found in the Control Room for the Emergency Diesel Generator?

A. Power Factor
B. Kilowatts
C. Engine Speed
D. Frequency

The ________ NORMALLY controls the Emergency Diesel Generator engine when operating at 900 rpm.

A. Idle Start Circuit
B. Voltage Regulator
C. Electronic Governor
D. Hydraulic Governor

High Jacket Water temp
High Crankcase press
Overspeed
Low Lube Oil press
Generator/Bus Differential fault
Transformer DF8 Lockout

A. 1, 2, 3
B. 1, 4, 5
C. 2, 4, 6
D. 3, 5, 6

The following plant conditions exist:
* Emergency Diesel Generator 1 monthly surveillance test is in progress
* Emergency Diesel Generator 1 has been idle started and is running at 400 RPM
Which ONE of the following describes the reason that annunciator 43-1-A, NOT READY FOR AUTO START/ABNORM SW POS, would be in an alarm condition during this portion of the surveillance test?

A. The field is shorted at idle speed
B. The Voltage Regulator Generator is turned OFF
C. The 86-1 lockout relay is bypassed at idle speed
D. The Governor Mode Select Switch is in the HYD position

Which ONE of the following occurs when an Emergency Diesel Generator reaches 200 rpm after receiving an automatic start signal?

A. Generator Field will flash
B. Air Start Motors will disengage
C. Room Ventilation Fans will receive a start signal
D. EDG Output Breaker will receive a close permissive signal

The plant is at 100% power
Emergency Diesel Generator Air Receiver 2-1 has been isolated and depressurized for maintenance. The result of this action is:

A. Emergency Diesel Generator 1 is inoperable, Emergency Diesel Generator 2 is operable.
B. Emergency Diesel Generator 1 is operable, Emergency Diesel Generator 2 is inoperable.
C. Both Emergency Diesel Generators are inoperable.
D. Both Emergency Diesel Generators are operable.

The following plant conditions exist:
o Loss of offsite power
o EDG 1 out of service
o EDG 2 running at rated load starting at 0800 on June 14
o Normal fuel oil transfer pumps NOT available
o Day tank capacity is at 6000 gallons
Of the following, which is the LATEST TIME that may occur prior to performing an emergency fill of the day tank without EDG 2 running out of fuel?

A. 1559, June 14
B. 1959, June 14
C. 2359, June 14
D. 0759, June 15

Match the following Emergency Diesel Generator oil pumps from the left column with the component(s) each supplies in the right column.

____ 1. Scavenging oil pump
____ 2. Main oil pump
____ 3. Piston cooling oil pump
____ 4. Soakback oil pump

A. Main oil pump suction
B. Engine bearings while in standby
C. Engine bearings while operating
D. Wristpins

Which of the following lube oil pumps should be running with EDG 1 in a normal standby condition?

A. Scavenging Oil Pump and AC Turbo Oil Pump
B. Scavenging Oil Pump and Piston Cooling Oil Pump
C. Soakback Oil Pump and AC Turbo Oil Pump
D. Soakback Oil Pump and Piston Cooling Oil Pump

The plant is at 100% power.
* EDG 1 monthly surveillance test is in progress.
* EDG 1 has been idle started and is running at 450 RPM.
A loss of offsite power occurs.
Which one of the following describes how EDG 1 will power C1 Bus?

A. The EDG speed will automatically increase to 900 RPM and AC 101 will automatically close
B. The EDG speed will automatically increase to 900 RPM and AC 101 will have to be manually closed
C. The EDG speed will have to be manually increased to 900 RPM and AC 101 will automatically close
D. The EDG speed will have to be manually increased to 900 RPM and AC 101 will have to be manually closed

When a load of diesel fuel oil arrives for the Emergency Diesel Generator Week Tanks, the operator should use the ______ to verify the tanker truck is carrying _______.

A. Bill of Lading, Ultra Low Sulfur Diesel fuel oil
B. Bill of Lading, #2 High Sulfur Diesel Supreme fuel oil
C. Material Safety Data Sheet, Low Sulfur Diesel fuel oil
D. Material Safety Data Sheet, #2 High Sulfur Diesel Supreme fuel oil

The plant is at 100% power.
A Tornado Watch has been declared for Ottawa County.
Which one of the following actions are required due to the Tornado Watch?

A. Idle start both Emergency Diesel Generators
B. Start the ventilation in both Emergency Diesel Generator rooms
C. Block open the missile barrier doors (Doors 361 and 362) in both Emergency Diesel Generator Rooms
D. Fail open the ventilation exhaust dampers (HV5336C and HV5329C) in both Emergency Diesel Generator Rooms

Which ONE of the following is the approximate number of hours that the Emergency Diesel Generator can operate at FULL load before refilling the Emergency Diesel Generator Day Tank is required?

A. 8 hours
B. 12 hours
C. 24 hours
D. 36 hours

The Emergency Diesel Generator Fuel Oil Storage Tank capacity is enough to operate the Emergency Diesel Generator at full load for approximately _____.

A. four (4) days
B. one (1) week
C. two (2) weeks
D. one (1) month

Which ONE of the following can be used as a Backup source of Diesel Oil to the Emergency Diesel Generator Day Tanks?

A. Diesel Oil Storage Tank
B. Diesel Fire Pump Day Tank
C. Miscellaneous Diesel Generator Day Tank
D. Station Black Out Diesel Generator Day Tank

Given the following conditions:
* Emergency Diesel Generator 2 had been running in parallel with D1 Bus for testing and has been unloaded due to electric governor instability
* The Governor Selector Switch has been placed in the “Hydraulic” position
What will be the expected response of the Emergency Diesel Generator?
The engine will:

A. immediately stop
B. speed will slow to ≈450 rpm
C. speed will remain at 900 RPM
D. speed will increase to ≈945 RPM

The Station Blackout Diesel Generator is running, supplying D2 Bus in parallel with the grid for a surveillance test. The equipment operator takes the SBODG SPEED CHANGER switch to raise.
Which one of the following would be the expected response of the SBODG indications?

A. Kilowatts (KW) increase
B. Frequency (HZ) increases
C. Speed (RPM) increases
D. Reactive Load (KVAR) increases

The Station Blackout Diesel Generator is running supplying D2 Bus in parallel with the grid for surveillance testing.
The equipment operator takes the VOLT REGULATOR switch to RAISE.
Which ONE of the following would be the expected response of the SBODG indications?

A. Speed (RPM) increases.
B. Kilowatts (KW) increase.
C. Frequency (HZ) increases.
D. Reactive load (KVAR) increases.

Emergency Diesel Generator 1 is running, supplying its associated 4160 VAC Essential Bus in parallel with the grid for surveillance testing.
The local operator takes the “DG 1 Volt Regulator” switch to the
“Lower” position. IDENTIFY the expected response of the Diesel Generator indications?Emergency Diesel Generator 1 ____________

A. KW lowers
B. KVARs lower
C. Speed lowers
D. Frequency lowers

The Station Blackout Diesel Generator is running supplying D2 Bus in parallel with the grid for surveillance testing. Which of the following sets of conditions will actuate relays to trip the Station Blackout Diesel Generator output breaker but will NOT trip the engine.

Reverse power
High Crankcase pressure
Low lube oil pressure
Field failure
Negative phase sequence
High jacket water temperature

A. 1, 2, 3
B. 3, 5, 6
C. 2, 4, 6
D. 1, 4, 5

Isochronous operation of a diesel generator during parallel operations is ___________.

A. desirable because it helps establish consistent loading
B. undesirable because a fault on a non-essential bus could trip the diesel
C. desireable because it helps maintain bus frequency
D. undesirable because the diesel could become overloaded

Isochronous operation of a diesel generator during parallel operations is ________

A. DESIRABLE because it helps maintain bus frequency
B. DESIRABLE because it helps establish consistent loading
C. UNDESIRABLE because the diesel could become overloaded
D. UNDESIRABLE because a fault on a non-essential bus could trip the diesel

Which of the following set of conditions will trip the Emergency Diesel Generator output breaker but will NOT trip the engine.

Field failure
High Crankcase pressure
High jacket water temperature
Low lube oil pressure
Negative phase sequence
Reverse power

A. 1, 3, 5
B. 1, 5, 6
C. 2, 3, 4
D. 2, 4, 6

Which ONE of the following would NOT meet the Technical Specifications limiting condition for operation associated with Emergency Diesel Generator 2 in Mode 1?

A. Fuel Oil Transfer pump running.
B. Emergency Diesel Generator 2 fuel oil within acceptable limits for total particulates.
C. Fuel Oil Transfer pump deenergized.
D. Emergency Diesel Generator Fuel Oil Storage Tank at 36,000 gallons.

Which ONE of the following is the Surveillance Requirement MINIMUM fuel oil level requirement for the Emergency Diesel Generator Day Tank to ensure OPERABILITY of the Emergency Diesel Generator?

A. 3,200 gallons
B. 4,000 gallons
C. 32,000 gallons
D. 40,000 gallons

Which one of the following would NOT meet the Technical Specifications limiting conditions for operation associated with EDG 2 in Mode 1?

A. EDG 2 Day Tank at 4400 gallons.
B. EDG 2 Storage tank at 31,000 gallons.
C. Fuel oil transfer pump running.
D. Fuel oil transfer pump in standby.

DB-SC-03070, EDG #1 Monthly Test is in progress and the CTRM indications for #1 EDG are as follows:
- KW 2600 KW
- KVAR 1200 KVAR (OUT)
In order to establish optimum conditions prior to starting the 60 minute run, the local operator should __________.

A. raise the #1 EDG speed adjust to obtain a power factor of 0.8
B. lower the #1 EDG speed adjust to obtain a power factor of 0.9
C. raise the #1 EDG voltage adjust to obtain a power factor of 0.8
D. lower the #1 EDG voltage adjust to obtain a power factor of 0.9

Determine which ONE of the following will deenergize the SBODG AVAILABLE light in the Control Room.

A. RATED SPEED SWITCH in RATED position.
B. AD301, SBODG OUTPUT BREAKER, racked out.
C. ELECT PROTECT-MODE SELECT SWITCH in TEST.
D. ELECT PROTECT-MODE SELECT SWITCH in EMERG.

Prior to a manual start of EDG 2, the governor ISOCHRONOUS/DROOP switch is placed in ISOCHRONOUS. The impact of this switch positioning will ___________.

A. result in potential overload of the EDG when AD101, EDG 2 output breaker, is closed.
B. have no effect since without a safety start signal present the governor automatically shifts to the droop mode for a normal start.
C. cause an overspeed trip of EDG 2. This is because the EDG will immediately speed up once AD101 is closed.
D. have no effect since the only time the isochronous mode is necessary is when the EDG is supplying D2 bus with AD110 and AACD1 open.

After an automatic start (UV) of EDG 1, the EDG is supplying C1 bus. The local panel operator places DG1 voltage regulator control switch to RAISE for about two seconds.
Which ONE of the following describes the response of instrumentation at the local panel?

A. EDG watts will increase, EDG VARS will decrease.
B. EDG volts will increase, EDG VARS will decrease.
C. EDG volts will increase, EDG VARS will remain constant.
D. EDG watts will increase, EDG VARs will remain constant.

o An automatic start (SFAS Level 2) of EDG 1, has occurred.
o The EDG is running and AC101, Bus C1 to DG1, is open.
o The local panel operator places DG1 voltage regulator control switch to RAISE for about two seconds. EDG _________ increase. EDG _________.

A. watts; VARS decrease.
B. volts; speed remains constant.
C. volts; VARS decrease.
D. watts; speed remains constant.

The following conditions exist:
- Following a manual run of the EDG 1, the electronic governor failed, and the operator took control of the hydraulic governor and maintained speed and frequency.
- No automatic start signals are present, and the EDG operator has been directed to shut the EDG down.
- The EDG operator unloads the diesel to 300 KW and then depresses the EDG 1 STOP pushbutton on C-3615, EDG Control Panel. The EDG output breaker, AC 101, will __________.

A. open, the EDG will slow to approximately 450 rpm, stay at 450 rpm for ten minutes, then stop.
B. open, and the EDG will stop immediately without idling at 450 rpm for ten minutes.
C. open, the EDG will stay at approximately 900 rpm for ten minutes, then stop.
D. not trip until the engine speed drops below 800 rpm following receipt of the “stop” signal.

The Station Blackout Diesel Generator (SBODG) has been started from the Control Room and loaded on D2 Bus following a loss of offsite power. The SBODG then automatically trips.
Determine which ONE of the following caused the trip.

A. Negative phase sequence
B. Reverse power
C. Transformer DF8 overcurrent
D. Generator Neutral overcurrent

Following an auto start of EDG 1 as a result of bus under-voltage, AC101, EDG Output Breaker, fails to close.
* The EDG is running at 900 RPM and output voltage is 4160V.
* AC110 and ABDC1 are open.
Assuming that AC101 will operate manually and no C1 bus fault exists, the _________________________.

A. operator at the EDG panel can close the breaker by placing the AC101 control switch to CLOSE.
B. operator at the EDG panel can close the breaker by placing the Sync Switch in the “AC101 to C1” position AND placing the AC101 control switch to CLOSE.
C. operator at the EDG panel will be unable to close AC101 from the EDG panel.
D. Control Room operator can close the EDG Output breaker by placing the AC101 control switch to CLOSE.

o EDG 2 has been started using the IDLE Start pushbutton and is running at 450 rpm.
o An undervoltage (59%) on Bus D1 is received.
o All proper automatic actions occur.
Which ONE of the following is the EDG response?

A. The EDG field will flash. The EDG will accelerate to 900 RPM. AD101 EDG 2 Output Breaker will close in on the bus.
B. The EDG will accelerate to 900 RPM. The Idle Release Pushbutton must be depressed to flash the EDG field, then AD101 EDG 2 output breaker will close in on the bus.
C. The operator must depress the Idle Release Pushbutton before EDG 2 will accelerate to 900 RPM. The EDG field will flash. AD101 EDG 2 output breaker will close on the bus.
D. The operator must manually raise EDG 2 speed to 900 rpm. The EDG field will flash and the EDG output breaker, AD101 will close.

The following plant conditions exist:
- EDG 1 is running at 900 rpm.
- Bus C1 voltage is 4160 Vac.
- You have just closed breaker AC101, DG 1 to Bus C1,
according to procedure.
Which one of the following is the action to be taken and the reason for the action?

A. Go to raise on EDG 1 speed control switch to prevent a reverse power trip.
B. Go to lower on EDG 1 speed control switch to prevent an overspeed trip of EDG 1.
C. Go to raise on EDG 1 voltage regulator control switch to prevent an undervoltage condition on C1 bus.
D. Go to lower on EDG 1 voltage regulator control switch to prevent an overvoltage condition on C1 bus.

Following an automatic start of the Emergency Diesel Generator as the result of an SA2 signal, the voltage regulator will be in the___________.

A. Isochronous mode because the auto start signal shifts the voltage regulator to ISOCHRONOUS regardless of selector switch position.
B. Droop mode because the selector switch is normally in the DROOP position.
C. Isochronous mode because the selector switch is normally in the ISOCHRONOUS position.
D. Droop mode because the auto start signal shifts the voltage regulator to DROOP regardless of selector switch position.

After an automatic start (UV) of EDG 1, C1 bus is being restored to its normal electrical alignment. At the time that AC110, Bus C1 to C2 tie is closed, what actions should the local panel operator take?

A. Lower voltage to reduce the load, then trip AC101.
B. Place DG1 SPD Control to LOWER to reduce the load, then trip AC101.
C. Lower voltage to reduce the load, then trip the EDG using the EMERGENCY SD P.B.
D. Place DG1 SPD control to LOWER, then trip the EDG using the EMERGENCY SD P.B.

A. only required action is for the operator at the EDG panel to close the breaker by placing the AC101 control switch to CLOSE.
B. operator at the EDG panel can close AC101 from the EDG panel by resetting the 86-1 relay and placing the AC101 control switch to CLOSE
C. Control Room operator can close the breaker by placing the Sync Switch in the “EDG BKR to C1” position AND placing the AC101 control switch to CLOSE.
D. only action required is for the Control Room operator to close the EDG Output breaker by placing the AC101 control switch to CLOSE.

The plant is in Mode 5.
* EDG 1 is tagged out of service for maintenance.
* Maintenance personnel report fuel oil was inadvertently drained from the EDG 2 Day Tank instead of EDG 1 Day Tank
* The EDG 2 Day Tank level is currently at 3850 gallons
The result of this action is:

A. NO Tech Spec entry is required
B. Enter ONLY Tech Spec 3.8.2 for no operable EDGs
C. Enter ONLY Tech Spec 3.8.3 for an inoperable Fuel Oil system
D. Enter Tech Spec 3.8.2 for no operable EDGs AND Tech Spec 3.8.3 for an inoperable Fuel Oil system

The plant is in Mode 4 with a plant heatup in progress.
The Zone 2 operator reports that breaker BE1298 for EDG 1 Fuel Oil Transfer Pump is tripped. Maintenance determines repairs will take approximately 72 hours to complete. Which of the following describes the appropriate Tech Spec response?

A. Cooldown to Mode 5 and enter Tech Spec 3.8.2
B. Enter Tech Spec 3.8.1 ONLY and remain in Mode 4
C. Enter Tech Spec 3.8.3 ONLY and cooldown to Mode 5 after 48 hours
D. Enter Tech Spec 3.8.1 and Tech Spec 3.8.3 and continue the heatup to Mode 3

The following plant conditions exist:
1. Reactor TRIPPED
2. RCS pressure 2000 psig
3. CTMT pressure 4 psig
4. Thermocouples (ave) 650°F.
Which ONE of the following conditions will cause the Emergency Diesel Generator 1-1 engine to trip?

A. EDG 1 engine speed of 1000 rpm.
B. EDG 1 cooling jacket temperature of 210°F.
C. Ground fault.
D. Generator differential overcurrent.

UPDATE QUESTION PRIOR TO USE PER CR 2000-2646
The following conditions have been noted during the performance of DB-SC04271, SBODG Monthly Test, with the plant at 100% power:
With the SBODG stable at 2800 KW and 0.8 power factor, KVAR load
suddenly swings by 300 KVAR (IN)
The most likely cause of the swing is __________.

A. the RO-P has gone to INCREASE on the ULD
B. MVAR swing has occurred on the Main Generator
C. a large capacitive load has been started on D2 bus
D. the RO-S has placed the turbine in MANUAL and depressed the DECREASE button on the EHC panel for 2 seconds

EDG 1 has been started and brought to rated speed (900 rpm). AC101, EDG 1 output breaker is open.
Annunciator 43-1-A, NOT READY FOR AUTO START/ABNORM SW POS is in the alarm state prior to EDG start.
Annunciator 43-3-C, PT/PT FUSE FAILURE EXCITER, alarms about 45
seconds after the EDG is started. This is because ___________________________________.

A. the EDG output breaker is open.
B. the Governor Mode Selector is in HYD.
C. fuse 2P is blown.
D. the Voltage Regulator Switch is in OFF.

Following an SFAS Level 2 start, the EDG 1 trips on overspeed.
The auto start signal is still present.
Which ONE of the following actions must be taken to restart the EDG?

A. Reset the Overspeed Trip Reset Lever and depress the start pushbutton.
B. Reset the Overspeed Trip Reset Lever and depress the Lockout Reset Pushbutton.
C. Block the SFAS signal and depress the start pushbutton.
D. Block the SFAS signal and depress the Lockout Reset Pushbutton.

During normal operation of EDG 1 during a surveillance run, Annunciator 43-1-E, BLOWN FUSE/LOSS OF POWER, comes in. Investigation shows that fuse 3P is blown. As a result of this condition, EDG 1 will <>

A. trip due to loss of fuel oil.
B. not trip, but will slow down sufficiently that the output breaker will trip on reverse power.
C. continue to run normally with no impact.
D. continue to run but the full load capability of 2600 KW cannot be maintained.

A loss of offsite power has occurred.
The Station Blackout Diesel Generator (SBODG) is supplying D2 Bus.
Determine which ONE of the following pairs of SBODG parameters can be controlled from C30202, SBODG Control Panel.

A. KiloWATTS and KiloVARS
B. KiloVARS and Voltage
C. Voltage and Frequency
D. Frequency and KiloWATTS

The plant is at 100% power.
- The SBODG is operating at 2700 KW for the monthly surviellance
test.
- ABDD2, BUS TIE XFMR BD, is inadvertently opened.
Which one of the following describes the response of the SBODG PRIOR to any operator action?

A. The governor shifts to the isochronous mode.
The voltage regulator shifts to the isochronous.
B. The governor remains in the droop mode.
The voltage regulator shifts to the isochronous mode.
C. The governor shifts to the isochronous mode.
The voltage regulator remains in the droop mode.
D. The governor remains in the droop mode.
The voltage regulator remains in the droop mode.

Which one of the following actions associated with the Station Blackout Diesel Generator can be performed from the Control Room?

A. Adjust frequency
B. Adjust output voltage
C. Manually close the output breaker
D. Manually start the radiator fans

Determine which ONE of the following will deenergize the Station Blackout Diesel Generator AVAILABLE light in the Control Room.

A. RATED SPEED SWITCH in RATED position.
B. AD301, SBODG OUTPUT BREAKER, racked out.
C. ELECT PROTECT-MODE SELECT SWITCH in TEST.
D. ELECT PROTECT-MODE SELECT SWITCH in EMERG.

Which one of the following SBODG annunciators will cause the SBODG AVAILABLE light in the Control Room to go OFF?

A. T-2, HYD GOV NOT AT HIGH LIM
B. T-8, LOW STARTING AIR PRESSURE
C. M-5, ELECTRICAL FAULT
D. M-10, OVERCRANK

SBODG annunciator T-2, HYD GOV NOT AT HIGH LIMIT, is normally off ___________.

A. except when the SBODG is running at idle speed.
B. except when the SBODG is started from the control room.
C. since the Electronic Governor controls engine speed during all phases of SBODG operation.
D. since the Hydraulic Governor can only be used when the Electronic Governor is failed.

The following plant conditions exist:
1. A loss of offsite power has occurred.
2. A lockout of 4160V Bus C1 has occurred.
Select the answer which describes how EDG 1 should be operated as a result of these conditions.

A. EDG 1 should be shut down since the lube oil pump has no power available
B. EDG 1 will automatically trip on high jacket cooling water temperature.
C. EDG 1 may continue to operate without cooling water until it is loaded.
D. EDG 1 should be shut down since Component Cooling Water is not available.

Which ONE of the following makes the EDG inoperable?

A. Voltage Regulator Droop Switch is in OFF.
B. Voltage Regulator Control Switch is in OFF.
C. Governor Mode Select Switch is in ELECT.
D. Governor Droop Switch is in ISOCHRONOUS

The Station Blackout Diesel Generator is running in parallel with D2 Bus for a surveillance test.
Which one of the following would require an emergency shutdown of the Station Blackout Diesel Generator?

A. Jacket Water Outlet temperature raises to 185°F
B. AD213, SBODG/D2 Bus Tie Breaker, is manually tripped
C. Fuse FU2, DC Fuel Oil Pump, blows
D. Lube oil pressure lowers to 20 psig

Plant conditions:
The plant tripped from 100% power due to a loss of offsite power.
Both Emergency Diesel Generators are running and supplying power to the C1 and D1 4160V busses.
Attempts to start the SBO Diesel have been unsuccessful.
Bus D2 is being powered from Bus D1.
EDG 1 load is 2300 KW.
EDG 2 load is 2300 KW.
With the above conditions, the Motor Driven Feedwater Pump __________.

A. can be started after reducing load on EDG 2
B. can NOT be started until the SBO Diesel is supplying D2
C. can be started immediately
D. can NOT be started unless Bus D2 is transferred to Bus C1

After placing loads on an EDG, it is observed that these loads total 2900 KW.
Which ONE of the following Emergency Diesel Generator time constraints is applicable?

A. 30 minutes
B. 200 hours
C. 2000 hours
D. Continuous

When paralleling the Emergency Diesel Generator during the monthly surveillance test, load is RAISED immediately to 300 KW after closing the output breaker in order to _______

A. raise oil temperature.
B. burn out carbon deposits.
C. prevent a reverse power trip.
D. minimize wear on the tubocharger gears.

Which one of the following would indicate a clogged Air Line Filter on the EDG Air Start System?

A. The indicator on top of the filter is GREEN when the Air Compressor is running.
B. The indicator on top of the filter is GREEN when the Air Compressor is NOT running.
C. The indicator on top of the filter is RED when the Air Compressor is running.
D. The indicator on top of the filter is RED when the Air Compressor is NOT running.

The plant is in Mode 5.
Emergency Diesel Generator 1 is running and loaded for a surveillance test.
Generator output is approximately 1500 KW
Due to high voltage on C1 bus reactive load is approximately 500 KVARs OUT.
Based on the above indication Emergency Diesel Generator 1 power factor would be _________.

A. 0.95 Leading
B. 0.95 Lagging
C. 0.7 Leading
D. 0.7 Lagging

The plant is at 100% power.
Emergency Diesel Generator 2 is loaded on D1 bus for surveillance testing.
Due to a Reactor Coolant System leak, a Safety Features Actuation System level 2 actuation occurs.
The operator at the Emergency Diesel Generator is required to ____________.

A. Open breaker AD101, DG2 to Bus D1
B. Open breaker AD110, Bus D1 to Bus D2
C. Place the Isochronous/Droop switch in DROOP
D. Place the Isochronous/Droop switch in ISOCHRONOUS

The plant was at 100% power.
A loss of offsite power has occurred.
Which one of the following would cause an Emergency Diesel Generator to automatically trip under the above conditions?

A. Low Lube Oil pressure
B. High Jacket Water temperature
C. Generator Differential relay actuation
D. Negative Phase Sequence relay actuation

The plant is in Mode 1.
Emergency Diesel Generator 1 is running and loaded for a surveillance test.
Generator output is approximately 1000 KW
Power factor is 0.9 lagging.
Based on the above indication Emergency Diesel Generator 1 KVAR would be ______.

A. approximately 2000 KVAR in
B. approximately 2000 KVAR out
C. approximately 500 KVAR in
D. approximately 500 KVAR out

During an outage, Bus C1 will be isolated (deenergized) for maintenance. What would be the adverse consequence of NOT closing #1 EDG air start valves prior to Bus C1 isolation?

A. EDG #1 will lockout
B. Bus C1 will lockout
C. EDG #1 will start
D. EDG #1 will not start when required.

The following plant conditions exist:
* The plant is operating at 100%.
* All systems are in a normal alignment.
* EDG starting air compressor 2 is running to repressurize the air receivers.
A D2 bus lockout occurs:
* AACD1 did not close.
* EDG 2 starts and supplies D1 bus.
The EDG 2 air compressor will __________.

A. not start until the air compressor breaker is reset locally
B. start immediately when D1 is energized
C. start 20 seconds after D1 is energized
D. start when the SFAS sequencer timers reset

Motor Operated (MOV) ball valves replaced the solenoid valves on the EDG starting air compressor drain lines because __________.

A. MOV ball valves are easier to operate than solenoid valves
B. AC power is more dependable than DC power
C. the drain valves needed to have a larger orifice.
D. MOV ball valves are less susceptible to contaminant failures

The plant is at 100% power with all systems in a normal lineup.
* The monthly surveillance test for Emergency Diesel Generator 1 is in progress. While paralleling and loading Emergency Diesel Generator 1, a reverse power trip occurs. As a result of the reverse power trip the generator output breaker opens and the <>

A. engine trips
B. generator field is shorted
C. generator frequency goes to ≈63 Hz
D. engine goes to idle speed

The 13.8 KV Bus synchro check relays ensure proper phasing for live transfers by looking at both sources of power and preventing breaker closure if ______________________.

A. current difference between them is greater than 5 amps
B. voltage difference between them is greater than 100 volts
C. phase difference between them is greater than 35 degrees
D. frequency difference between them is greater than 0.5 cycles

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EO 1 Block 1 Flashcards

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