EO 2 Block 3 Steam Gen Flashcards by Cody Rook

Which of the following is ONE purpose of the Once Through Steam Generator?

A. Provides overpressure protection for the Main Turbine.
B. Provide a surge volume on a loss of Main Feedwater.
C. Acts as a fission product barrier.
D. Converts potential energy of the Reactor Coolant System to internal energy of the steam seals.

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ONE of the purposes of the Once Thru Steam Generator is to convert ____ energy of the Reactor Coolant System to steam for use in the turbine generator.

A. fluid
B. potential
C. thermal
D. molecular

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Which of the following combinations describes TWO (2) purposes of the Once Through Steam Generator?

1 . Provides overpressure protection for the Main Feedwater System.
2. Provides a heat sink to promote natural circulation.
3. Acts as a fission product barrier.
4. Maintains the average temperature of the Reactor Coolant System constant.

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

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Which one of the following is NOT a purpose of the Once Thru Steam Generator?

A. Acts as fission product barrier
B. Provides a heat sink to promote natural circulation of the RCS
C. Provides overpressure protection for the secondary system
D. Converts thermal energy of the Reactor Coolant System to steam

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Which ONE of the following describes the Reactor Coolant System vs. Main Steam flowpath in the tube section of the Once Through Steam Generator?

A. Parallel flow
B. Series flow
C. Counter flow
D. Mixedflow

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Which ONE of the following combinations represents the proper flowpath order in the secondary side of the Once Thru Steam Generator, STARTING at the Main Feedwater nozzles?

Lower downcomer
Tube bundle
Upper cylindrical baffle
Orifice plate
Flow ports in the lower cylindrical baffle

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

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The Steam Generator Control Drain Valves to the Condenser (MS 4532 and MS 4531) are interlocked to AUTOMATICALLY CLOSE at 17” HgA in the condenser. Which ONE of the following is the reason for this ?

A. Prevent damage to Steam Generator tubes
B. Limit Slowdown flow to condenser
C. Prevent condenser damage
D. Limit flow past the Turbine Bypass Valves

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As reactor power is INCREASED from 40% to 50%, aspirating steam flow will ___ _ because ___ _

A. INCREASE; SG level is HIGHER
B. DECREASE; steam flow INCREASES
C. INCREASE; feedwater flow INCREASES
D. REMAIN CONSTANT; feedwater temperature INCREASES

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The preferred source for filling a dry Steam Generator after a refueling outage is the ___ _

A. Auxiliary Feed Pump
B. Motor Driven Feed Pump
C. Start Up Feed Water Pump
D. Main Feed Water Pump

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According to DB-OP-02526 (Steam Generator Overfill), three main sources of water can cause an overfill condition. Which one of the following combinations identifies the three (3) sources?

Main Feedwater
Auxiliary Feedwater
Service Water
Fire Water
Primary to Secondary Leak
OTSG Recirc Flow

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

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Which of the following pumps will have the GREATEST effect on establishing natural circulation in the reactor coolant system? (Assume all pumps are feeding at the SAME flowrate.)

A. Main Feed Pump
B. Startup Feed Pump
C. Auxiliary Feed Pump
D. Motor Driven Feed Pump (MFW mode)

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Which ONE of the following is a reason that the Auxiliary Feedwater nozzles connect to the top of the Once Through Steam Generator steam space?

A. Provides a HIGHER thermal driving head for natural circulation.
B. Prevents thermal shock of the Once Through Steam Generator upper tube sheet.
C. Increases steam pressure in the Once Through Steam Generator to DECREASE heat transfer.
D. Condenses steam in the Reactor Coolant System during subcooled operation of the Reactor Coolant System.

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When filling and venting the Steam Generator blowdown line, the PREFERRED hose connection point for filling the blowdown line is __ _

A. Demineralized water connection in Emergency Core Cooling System Room 2.
B. the demineralized water connection in Waste Gas Compressor Room 1.
C. the demineralized water connection in Boric Acid Evaporator Room 1.
D. the demineralized water connection in Mechanical Penetration Room 2

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Which ONE of the following explains why the tube support plates in the Once Through Steam Generator are randomly spaced?

A. Dampen flow induced vibration.
B. Prevent flow oscillations in tube bundle.
C. Support lower and upper cylindrical shrouds.
D. Allow Steam Generator tube alignment.

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ONE reason that the primary side of the Once Through Steam Generator tube sheet is clad with lnconel is to ___ _

A. increase effiency due to less heat losses
B. prevent corrosion due to the Reactor Coolant System chemistry
C. reduce radiation due to the decay of nitrogen N16
D. strengthen the metal due to the Reactor Coolant System higher pressure

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Which ONE of the following is NOT a reason the Auxiliary Feedwater Nozzles connects to the top of the Once Thru Steam Generator steam space?

A. Condenses steam in Once Thru Steam Generator to increase heat transfer.
B. Prevents thermal shock of the lower tube sheet.
C. Provides a higher thermal driving head for natural circulation.
D. Condense steam in the Reactor Coolant System(RCS) during loss of RCS water inventory.

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ONE of the reasons that the Reactor Coolant System side of the Once Through Steam Generator tube sheet is clad with lnconel is to——�

A. increase the amount of heat transfer across the tubes of the Steam Generator
B. to increase the flow of Reactor Coolant System water through the Steam Generator
C. reduce the effects of irradiation due to the decay of nitrogen (N16)
D. be compatible with the steam generator tubes

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The Once Through Steam Generator tubes are supported by the _____ _

A. cylindrical shrouds
B. internal Auxiiliary Feedwatar header connectors
C. egg crate separator plates
D. tube support plates

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As Reactor Power INCREASES from 28.5% to 100% the nucleate boiling region ___ _ and the superheat region ____ in the Once Thru Steam Generator.

A. INCREASES; INCREASES
B. DECREASES: INCREASES
C. INCREASES; DECREASES
D. DECREASES: DECREASES

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Which one of the following Once Thru Steam Generator Heat Transfer regions does the TEMPERATURE of the fluid NOT change significantly.

A. Superheat
B. Film Boiling Region
C. Aspirating Area
D. Feedwater Preheating

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Between 28% and 100% Rx Power which of the following areas remains relatively constant in the Once Through Steam Generator?

A. Pre-Heater Section Region
B. Nucleate Boiling Region
C. Superheat Region
D. Film Boiling Region

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Which one of the following regions provides the greatest amount of heat transfer in the Once Thru Steam Generator during NORMAL power operations?

A. Subcooled region
B. Nucleate boiling region
C. Film boiling region
D. Superheat region

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As reactor power approaches 100% power the temperature of the steam leaving the Once Through Steam Generator decreases. The reason for this is ____ _ A. T hot is LOWER B. the size of the nucleate boiling region is LARGER C. the size of the superheat region is LARGER D. the amount of aspirating steam is SMALLER

As reactor power INCREASES above 28.5%, TAvE remains constant because the steam generator __ . A. water level increases B. steam pressure increases C. water temperature increases D. steam temperature increase

As power INCREASES from 28.5% to 50%, the steam temperature leaving the Once Thru Steam Generator ____ as the superheat region ___ _ A. remains constant: DECREASES B. INCREASES; DECREASES C. DECREASES: INCREASES D. INCREASES; remains constant

As power INCREASES from 28.5% to 100%, the size of the nucleate boiling region ___ _ and the size of the superheat region ____ in the Once Through Steam Generator. A. INCREASES, INCREASES B. DECREASES, INCREASES C. INCREASES,DECREASES D. DECREASES, DECREASES

As reactor power increases between 90% and 1 00% power, the temperature of the steam leaving the Once Through Steam Generator DECREASES. The reason for this is ____ . A. Thot DECREASES B. the size of the nucleate boiling region DECREASES C. the size of the superheat region DECREASES D. the amount of aspirating steam INCREASES

As reactor power is RAISED above 28.5%, TAVE remains CONSTANT. The reason for TAVE remaining constant is that the steam generator ____ RISES. A. water level B. steam pressure C. steam temperature D. water temperature

Which ONE of the following explains the reason for changes in INDICATED SG levels during plant power changes between 28.5 and 100%? A. Changing FW temperatures cause changes in the density of the fluid in the downcomer. B. Changes in the area of the superheat region of the SG produce proportional changes in downcomer level. C. ICS controls SG levels proportional to plant power levels. D. Changes in flow resistance through the SG vary the amount of level required in the downcomer.

As reactor power is raised from 40% to 50%, aspirating steam flow will ____ because A. LOWERS, steam flow RAISES. B. RAISES, feedwater flow RAISES. C. remain CONSTANT, feedwater temperature RAISES. D. RAISES, Steam Generator level RAISES.

The Field Supervisor has determined that it is necessary to verify Once Through Steam Generator Startup level and pressure. Where can this be done without using Control Room indication? A. Auxiliary Shutdown Panel B. Mechanical Penetration Room 3 C. Electrical Penetration Room 2 D. Low Voltage Switchgear Room 2

According to DB-OP-02531, Steam Generator Tube Leak, which ONE of the following should be the FIRST indication of a primary to secondary Once Thru Steam Generator tube leak? A. 565 area Radiation Monitor B. Condensate Polisher Radiation Detectors C. Vacuum System Radiation Detector D. Area Radiation Monitors in Main Steam Line Room

Which one of the following will NOT cause all lights on HV 4531 (MS 4531 OTSG Blowdown valve) to be OFF? A. Valve is throttled. B. Low condenser trip signal is present. C. Valve is manually engaged and closed. D. Power has been lost to the valve solenoid.

Which ONE of the following Once Through Steam Generator instruments is temperature compensated? A. Startup Level B. Operate Level C. Steam Pressure D. Full Range Level

Which ONE of the following Once Thru Steam Generator instruments can be read on the Auxiliary Shutdown Panel? A. Steam Pressure B. Full Range Level C. Steam Temperature D. Operate Range Level

Which one of the following does the Once Thru Steam Generator pressure NOT provide a signal to? A. SG LO PRESS AND HI LVL TRIP BLK, 12-5-C B. Control Room Indication C. SG 1 (2) BTU LIMIT, 14-6-E(F) D. HPT MN STM PRESS, 14-3-F

Which one of the following does the Once Thru Steam Generator Lower downcomer (MFW temperature) thermocouple provide a signal to? A. Temperature compensate Operate Range level instrument B. Temperature compensate Startup Range level instrument C. Safety Parameter Display System (SPDS) to calculate average shall temperature D. BTU Limits calculator circuit

Which one of the following explains the changes in indicated SG levels that are observed during plant power changes between 28.5 and 100%? A. Changing FW temperatures cause changes in the density of the fluid in the downcomer. B. Changes in the area of the superheat region of the OTSG produce proportional changes in downcomer level. C. ICS controls SG levels proportional to plant power levels. D. Changes in flow resistance through the SG vary the amount of level required in the downcomer.

Which ONE of the following OTSG instrumentation/indication will cause the HIGH level SFRCS TRIP? A. Startup Range B. Full Range C. Operate Range D. MFP Discharge Pressure

The reactor TRIPPED 2 seconds ago with a six (6) gpm tube leak in #2 Steam Generator. With NO operator action the #2 Main Steam Lina Radiation Detector (RE 600) reading will ________ over the NEXT 30 minutes. A. RISE B. LOWER C. remain CONSTANT D. fail LOW

Which ONE of the following does the Once Through Steam Generator (OTSG) Lower downcomer (MFW temperature) thermocouple provide a signal to? A. Temperature compensated Operate Range Level Instrument B. Temperature compensated Startup Range Laval Instrument C. Safety Parameter Display System (SPDS) to calculate average shall temperature D. BTU Limits

Which ONE of the following will NOT have an effect on the Once Thru Steam Generator level instruments? A. Dry reference leg B. Flooded reference leg C. Elevated Containment temperature D. Increased reference leg pressure

Which ONE of the following instruments can be read on the Auxiliary Shutdown Panel? A. SG Steam Pressure B. SG Full Range Level C. SG Operate Range Level D. SG Steam Temperature

If #1 OTSG Pressure has DECREASED to 730 psig, which ONE of the following control room alarms will be in alarm? A. SG 1 LO PRESS TRIP (12-1-C) B. ICS FW LIMITED BY RX PWR (14-4-D) C. SG 1 LO PRESS AND HI LVL BLK PERM (12-4-C) D. SG 1 TO AFPT 2 MN STM PRESS LO (12-2-A)

The SG level will change �-- inches if 200 gallons of water is added to it. A. 2 B. 5 C. 8 D. 10

The ICS provides level limits for OTSG operation at power. The LOW level limits are established at ___ inches (SIU range) until approximately 28% power and the HIGH level limits are set at ___ % (operate range). A. 31,90 B. 40,90 C. 49, 90 D. 55, 85.5

Which ONE of the following statements identifies how OTSG level instrumentation is used? A. The Full range is used by ICS for level control. B. Startup range provides a signal for the AFW control valves (AF 6451/6452). C. The Operate range is used by ICS for the BTU limit calculation. D. SFRCS instruments are used to provide the control signal to the AFW control valves (AF 6451/6452) following an AFW initiation.

The OTSG LOW LEVEL LIMITS are established at __ inches (SIU range) until approximately 28% power and the HIGH LEVEL LIMITS are set at ___ % (operate range). A. 31", 90% B. 40", 85.5% C. 49", 90% D. 55", 85.5%

The following plant conditions exist: -The reactor TRIPPED 15 minutes ago -The turbine generator is TRIPPED -#1 OTSG Level is 20" -NO other malfunctions have occurred Which ONE of the following describes how the Once Thru Steam Generator's will end up being fed? A. #1 OTSG from #1 AFW Pump, #2 OTSG from #2 AFW Pump B. #1 OTSG from #1 AFW Pump, #2 OTSG from #2 MFW Pump C. #1 OTSG from #1 MFW Pump, #2 OTSG from #2 MFW Pump D. #1 OTSG from #2 AFW Pump, #2 OTSG from #2 AFW Pump

The following plant conditions exist: -The reactor TRIPPED 5 minutes ago -The turbine generator is TRIPPED -Vacuum is broken The ____ is controlling OTSG level at _____ inches A. Main Feedwater Pump; 40 B. Auxiliary Feedwater Pump; 49 C. Auxiliary Feedwater Pump; 55 D. Motor Driven Feedwater Pump; 40

During SFRCS level control of the Once Thru Steam Generator's, which ONE of the following combination of levels will the Auxiliary Feed Water system maintain in the OTSG (assume AFP 1-1 feeding OTSG 1-1) with NO SFAS Level 2 present AND WITH SFAS Level 2 present. A. 40", 124" B. 49", 124" C. 55", 130" D. 40", 49"

The following plant conditions exist: 1. The reactor TRIPPED 5 minutes ago 2. The turbine generator is TRIPPED 3. Vacuum is 3.2" HgA 4. NO other malfunctions have occurred The ____ is controlling OTSG level at __ inches. A. Main Feedwater Pump; 40 B. Auxiliary Feedwater Pump: 49 C. Motor Driven Feedwater Pump; 31 D. Auxiliary Feedwater Pump; 55

The plant has been operating at 100% power. FW SP6A, Main FW Control Valve to SG 2 fails to 70% open position. Actions to recover control of FW SP6A have failed. Assuming the plant has not been tripped, which ONE of the following identifies the automatic actions that would occur? A. SFRCS will trip on high level at 220 inches on the startup range level. B. SFRCS will trip on low level at 23.5 inches on the startup range level. C. SG 2 level will stabilize at 40 inches on the startup range level. D. SG 2 level will stabilize at 90% on the operate range level.

Which ONE of the following describes the Once Thru Steam Generator wet layup recirculation f lowpath, STARTING at the Wet Layup Recirculation Pump? A. Main feedwater nozzles - lower downcomer area - blowdown lines. B. Auxiliary feedwater nozzles - tube area - blowdown lines. C. Main feedwater nozzles - tube area - Auxiliary feedwater system. D. Tube area - upper cylindrical baffle - blowdown lines.

The reason that Moisture Separator drains are diverted to the condenser during a Steam Generator Tube Leak is to ____ _ A. send the water through the condensate demineralizer for cleanup. B. prevent the other Steam Generator from leaking. C. to MINIMIZE radiation levels on the 603' level of the Turbine Building. D. prevent contamination of the Number 5 Feed Water Heater.

Which ONE of the following is the correct feed source when filling a dry Once Thru Steam Generator (<16") with the Reactor Coolant System at 550'F? A. Main Feed Water Pumps B. Start Up Feed Water Pump C. Motor Driven Feed Pump from the Deaerators D. Motor Driven Feed Pump from the Condensate Storage Tank

Which ONE of the following describes the consequences of operation with a valid BTU Limit alarm condition present? A. Thermal stress of OTSG tubes due to excessive Th. B. INCREASE in plant efficiency due to low superheat. C. Possibility of turbine damage due to moisture in the steam. D. DECREASE in OTSG level due to feedwater flow reduction by JCS.

Which of the following pumps will have the GREATEST effect on establishing natural circulation in the reactor coolant system? (Assume all pumps are feeding at the SAME flowrate.) A. Main Feed Pump B. Startup Feed Pump C. Auxiliary Feed Pump D. Motor Driven Feed Pump (MFW mode)

Which ONE of the following is a reason that the Auxiliary Feedwater nozzles connect to the top of the Once Through Steam Generator steam space? A. Provides a HIGHER thermal driving head for natural circulation. B. Prevents thermal shock of the Once Through Steam Generator upper tube sheet. C. Increases steam pressure in the Once Through Steam Generator to DECREASE heat transfer. D. Condenses steam in the Reactor Coolant System during subcooled operation of the Reactor Coolant System.

The reason that Moisture Separator drains are diverted to the condenser during a steam generator tube leak is to _____ _ A. send the water through the condensate demineralizer B. prevent the other SG from becoming contaminated C. MINIMIZE radiation levels on the 603' Level of the Turbine Building D. prevent contamination of sump

The OTSG LOW LEVEL LIMITS are established at __ inches (S/U range) until approximately 28% power and the HIGH LEVEL LIMITS are set at ___ % (operate range). A. 31", 90% B. 40", 85.5% C. 49", 90% D. 55", 85.5%

Which ONE of the following combinations identifies the parameters that monitor BTU limits? 1. Feedwater Temperature 2. OTSGLevel 3. Feedwater Flow 4. OTSG Pressure 5. RCS Hot Leg Temperature 6. Reactor Coolant Flow 7. Reactor Power A. 1, 3, 4, 7 B. 1, 2, 5, 7 C. 2,3,6, 7 D. 1, 4, 5, 6

Which ONE of the following describes the function that the BTU Limits perform? A. Adjust feedwater flow to maintain 35 "F superheat. B. Vary the amount of superheat based on steam load. C. Ensures a minimum of 35 "F superheat by producing an annunciator. D. Maintain 35°F RCS subcooling margin.

According to DB-OP-02531, Steam Generator Tube Leak, which ONE of the following should be the FIRST indication of a 40 gpm primary to secondary Once Through Steam Generator (OTSG) tube leak? A. DECREASING Pressurizer Level B. Condensate Polishers radiation detector ALARMS C. Area radiation monitor ALARMS in the Main Steam Line Room D. Main Steam Line process radiation detector ALARMS

The following plant conditions exist: 1. The reactor TRIPPED 5 minutes ago 2. The turbine generator is TRIPPED 3. Vacuum is 3.2" HgA 4. NO other malfunctions have occurred The ____ is controlling OTSG level at __ inches. A. Main Feedwater Pump; 40 B. Auxiliary Feedwater Pump; 49 C. Motor Driven Feedwater Pump; 31 D. Auxiliary Feedwater Pump; 55

The following plant conditions exist: * The plant is in Mode 5. * RCS temperature is 90°F. * Motor Driven Feed Pump testing is in progress. * Annunciator 12-4-C SG 1 LO PRESS AND HI LVL TRIP BLK clears. * No other testing is in progress. * The amber block lights go OFF for HIS 101 B, SFRCS Logic Channel 1 Block Switch and HIS 101 C, SFRCS Logic Channel 3 Block Switch. These indications have occurred as a result of: A. rising pressure in SG 1 B. lowering pressure in SG 1 C. rising differential pressure (SG/FW) on SG 1 D. lowering level in SG 1

Plant conditions: * The plant is at 100% power. * Normal equipment lineups exist. Event: * Main Steam Isolation Valve MS100 begins traveling closed inadvertently due to a malfunction in its air operator. * MS 100 stops traveling at 62% open. * SG 2 outlet pressure spikes up to 1027 psig during the transient. * Turbine header pressure is 91 o psig. With the above conditions, ___ _ A. the Turbine Bypass Valves will open because SG 2 pressure is >930 psig B. the Atmospheric Vent Valves will open because SG 2 pressure is >1025 psig C. neither the Turbine Bypass Valves and Atmospheric Vent Valves will open because Turbine Header Pressure is 910 psig D. both the Turbine Bypass Valves and Atmospheric Vent Valves will open because SG 2 pressure is >995 psig

According to Reactor Coolant System Operational Leakage Technical Specification 3.4.13 What is the MAXIMUM allowable primary to secondary leakage through any ONE Once Through Steam Generator while in MODES 1-4? A. 1 gpm B. 10 gpm C. 75 gpd D. 150 gpd

According to T.S. 3.7.2.1 (SG Pressure/Temperature Limitation), the temperature of the secondary coolant in the Stearn Generator shall be > " F when the pressure of the secondary coolant in the Steam Generator is > __ psig. A. 100, 200 B. 110, 237 C. 200, 100 D. 237, 110

Which ONE of the following instruments can be read on the Auxiliary Shutdown Panel? A. SG Steam Pressure B. SG Full Range Level C. SG Operate Range Level D. SG Steam Temperature

According to Reactor Coolant System Operational Leakage Technical Specification 3.4.13, which ONE of the following is the MAXIMUM allowable PRIMARY TO SECONDARY LEAKAGE through any one steam generator while in MODES 1-4? A. 50 gpd B. 100 gpd C. 150 gpd D. No leakage allowed

The following plant conditions exist: 1. Mode 5, RCS temperature is 90 "F. 2. The Motor Driven Feed Pump has just been stopped after being run for testing. 3. Shortly thereafter, SG 1 LO PRESS AND HI LVL TRIP BLK annunciator goes OFF. 4. The red lights are LIT and the amber lights are OFF on both LCH 1 and LCH 3 LOW STEAM PRESSURE AND HIGH WATER LEVEL SFRCS BLOCK push- buttons 5. No other testing is in progress. What condition is indicated and what actions are required? A. SG 1 has been overpressurized; reduce SG 1 pressure to less than 110 psig within 15 minutes. B. SG 1 has been overpressurized; reduce SG 1 pressure to less than 237 psig within 30 minutes. C. SG 1 has a steam leak; isolate the leak. If unisolable, then isolate SG 1 and blow it down using the AW. D. SG 1 has tripped on low steam pressure: verify both AFW pumps are running and maintaining SG 2 level of 55 inches.

Which ONE of the following is a procedurally allowed source of makeup for filling a DRY OTSG (<16") with the RCS at 550°F? A. MFW Pumps B. SUFW Pumps C. MDFP from Deareators D. MDFP from Condensate Storage Tank

According to DB-OP-02531, SG Tube Leak, the Steam Jet Air Ejector after condenser drains are a ligned to the condenser in order to ------ A. lower contamination of secondary plant B. remove radionuclides in Moisture Separator Reheaters C. prevent pumping contamination to storm sewer D. minimize sump contamination

Prior to draining a Stearn Generator, which one of the following conditions must exist? A. Reactor defueled AND the Decay Heat Removal System in operation with the RCS temperature <200°F. B. Reactor defueled OR the Decay Heat Removal System in operation with RCS temperature < 180°F. C. Reactor is defueled OR the Decay Heat Removal System is in operation maintaining RCS temperature <140°F. D. Reactor defueled AND the Decay Heat Removal System in operation maintaining RCS temperature < 280°F

Prior to draining the secondary side of a Steam Generator, Chemistry is notified so they can A. prepare to neutralize hydrazine that may be in the water. B. monitor for nitrogen intrusion into the Decay Heat Removal System. C. monitor for an increase in radiation inside of the D-Rings in containment. D. set up portable equipment to monitor for release of radionuclides.

Which ONE of the following Once Through Steam Generator instruments is temperature compensated? A. Startup Level B. Operate Level C. Steam Pressure D. Full Range Level

Which ONE of the following annunciators does not receive a signal from the Once Through Steam Generator (OTSG) pressure instrument? A. SG 1(2) LO PRESS AND HI LVL BLK PERM, 12-4-C (12-4-D) B. SG 1(2) to AFPT 2(1) MN STM PRESS LO, 12-2-A (12-2-B) C. ICS BTU LIMITS, 14-6-E (14-6-F) D. HPT MN STM PRESS, 14-3-F

Which ONE of the following does the Once Through Steam Generator (OTSG) Lower downcomer (MFW temperature) thermocouple provide a signal to? A. Temperature compensated Operate Range Level Instrument B. Temperature compensated Startup Range Level Instrument C. Safety Parameter Display System (SPDS) to calculate average shell temperature D. BTU Limits

According to DB-OP-02531, SG Tube Leak, the Steam Jet Air Ejector after condenser drains are aligned to the condenser in order to---� A. lower contamination of secondary plant B. remove radionuclides in Moisture Separator Reheaters C. prevent pumping contamination to storm sewer D. minimize sump contamination

Integrated Control System (ICS) BTU LIMIT is designed to maintain at least 35 F of superheat. Which of the following would result if the BTU LIMIT calculator function FAILED? A. Produces a signal to limit feedwater resulting in plant trip. B. Provides for alarm function only C. Provides an input to runback circuitry to 55% D. Produces a reduction in HPT steam quality.

The following plant conditions exist: - The reactor TRIPPED 5 minutes ago from 100% power. - The turbine generator is TRIPPED. - Steam Generator levels are being controlled at 40". - All other systems in their normal post-trip configuration. The ____ are controlling steam generator pressure at ___ psi. 1. Turbine Bypass Valves (TBVs) 2. Atmospheric Vent Valves (AWs) 3. 870 4. 995 A. 1, 3 B. 1, 4 C. 2,3 D. 2,4

Which ONE of the following describes the function that the BTU Limits perform? A. Adjust feedwater flow to maintain 35 'F superheat. B. Vary the amount of superheat based on steam load. C. Ensures a minimum of 35 'F superheat by producing an annunciator. D. Maintain 35°F RCS subcooling margin.

Which ONE of the following combinations identifies the parameters that monitor BTU limits? 1. Feedwater Temperature 2. OTSG Level 3. Feedwater Flow 4. OTSG Pressure 5. RCS Hot Leg Temperature 6. Reactor Coolant Flow 7. Reactor Power A. 1, 3, 4, 7 B. 1, 2, 5, 7 C. 2,3,6, 7 D. 1, 4, 5, 6

The plant was operating at 100% power when BOTH MFW pumps TRIPPED. OTSG levels are 17 18 now at 12" on the SU RANGE LEVEL indicator. Which ONE of the following is a correct source for filling the OTSG? A. AFP via the AFW system B. MDFP via the MFW system C. SUFW pump via the MFW system D. MFW pump via the AFW system

The following plant conditions exist: - The reactor TRIPPED 5 minutes ago. - The turbine generator is TRIPPED. - Vacuum is broken. The ___ is controlling OTSG level at ______ inches Main Feedwater Pump; 40 B. Auxiliary Feedwater Pump: 49 C. Auxiliary Feedwater Pump; 55 D. Motor Driven Feedwater Pump; 40

According to DB-OP-02531, Steam Generator Tube Leak, which ONE of the following should be the FIRST indication of a 40 gpm primary to secondary Once Through Steam Generator (OTSG) tuba leak? A. DECREASING Pressurizer Level B. Condensate Polishers radiation detector ALARMS C. Area radiation monitor ALARMS in the Main Steam Line Room D. Main Steam Lina process radiation detector ALARMS

The following plant conditions exist: 1. The reactor TRIPPED 5 minutes ago 2. The turbine generator is TRIPPED 3. Vacuum is 3.2" HgA 4. NO other malfunctions have occurred The ____ is controlling OTSG level at __ inches. A. Main Feedwater Pump; 40 B. Auxiliary Feedwater Pump; 49 C. Motor Driven Feedwater Pump; 31 D. Auxiliary Feedwater Pump; 55

The following plant conditions exist: 1 . The plant is in Mode 5. 2. RCS temperature is 90"F. 3. SG levels are 450 inches and 480 inches. 4. Preparing to test run the motor driven feed pump. Which ONE of the following actions is required for this condition? A. The minimum flow for the MDFP shall be maintained between 120 gpm and 150 gpm while in operation. B. Verify that the warm up line to the condenser is open prior to and immediately after the MDFP is started. C. The Control Room operator shall verify that control power for the MDFP discharge valves is ON. D. A Control Room operator will monitor SG level and pressure, and open the AWs if necessary.

The correct source for filling a dry Steam Generator after a refueling outage is __ _ A. Auxiliary Feed Pump via the Aux. Feed Water system B. Motor Driven Feed Pump via Main Feed Water system C. Start Up Feed Wat.er pump via Main Feed Wat.er system D. Main Feed Water pump via Auxiliary Feed Water system

According to DB-OP-02526 (Steam Generator Overfill), three main sources of water can cause an overfill condition. Which one of the following combinations identifies the three (3) sources? 1. Main Feedwater 2. Auxiliary Feedwater 3. Service Water 4. Fire Water 5. Primary to Secondary Leak 6. OTSG Recirc Flow A. 1, 2, 5 B. 1, 4, 5 C. 2,3,6 D. 3,4, 6

Which ONE of the following is the correct feed source when filling a dry Once Thru Steam Generator (<16") with the Reactor Coolant System at 550 "F? A. Main Feed Water Pumps B. Start Up Feed Wat.er Pump C. Motor Driven Feed Pump from the Deaerators D. Motor Driven Feed Pump from the Condensate Storage Tank

The plant was operating at 100% power when BOTH MFW pumps TRIPPED. OTSG levels are now at 12" on the SU RANGE LEVEL indicator. Which ONE of the following is a correct source for filling the OTSG? A. AFP via the AFW system B. MDFP via the MFW system C. SUFW pump via the MFW system D. MFW pump via the AFW system

EO 2 Block 3 Steam Gen Flashcards

(114 cards)