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EO1 > EO 1 Block 3 Main Steam/MSR > Flashcards

EO 1 Block 3 Main Steam/MSR Flashcards

1
Q

Which ONE of the following is a purpose of the Main Steam System?

A. Prevent overspeed of the Main Turbine.
B. Prevent overpressurization of the Steam Generators.
C. Provide a means of heat removal during Refueling operations.
D. Prevent overpressurization of the Moisture Separator/Reheaters.

A

B

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2
Q

Which of the following is NOT a purpose of the Main Steam System?

A. Supply superheated steam from the Steam Generators to the Main Turbine.
B. Provide heat removal during a plant startup or shutdown.
C. Pressure relief is provided by the Main Steam Isolation Valve.
D. Pressure control is provided by the Turbine Bypass Valves.

A

C

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3
Q

Which ONE of the following statements identifies the purpose of the Main Steam system?

A. It supplies reduced pressure steam to the Auxiliary Feed Pump Turbines.
B. It supplies superheated steam from the Steam Generators to the Main Turbine.
C. It removes excessive condensate from the Main Steam lines and Turbine valves on plant
startup and shutdown.
D. It supplies steam to the shaft packing on the Main Turbine and Main Feed Pump Turbines
during high power operation.

A

B

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4
Q

Which of the following combinations are purposes of the Main Steam System?

  1. Supply steam to the Main Turbine.
  2. Supply steam to the Main Feed Pump Turbines.
  3. Supply steam to the Moisture Separator Reheater First Stage Reheat.
  4. Supply steam to the Hotwell Sparging Steam.

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

A

A

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5
Q

The Main Steam System provides superheated steam from the Once Through Steam Generators to the Main Turbine and _____ _

A. Moisture Separator Reheater first stage reheat
B. Auxiliary Boiler Mud Drum heater
C. Gland steam
D. Sparging steam

A

C

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6
Q

Which ONE of the following describes the basis for the Main Steam to Auxiliary Feed Pump
Turbines(AFPT) REDUCER?

A. Control the amount of reactivity added during blowdown of a Steam Generator due to a break
in the AFPT steam supply line.
B. Control the amount of energy discharged into Fan Alley during blowdown of a Steam
Generator due to a break in the AFPT steam supply line.
C. Restrict the rate the AFPT steam supply line will backfeed the Main Steam line during a Main
Steam line break.
D. Restrict the rate the AFPT steam supply line will backfeed the Main Turbine due to the Main
Stop valves failing to close.

A

B

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7
Q

The basis of the Main Steam Non-Return valves, MS 209 and MS 210, is to prevent ___ _

A. reverse rotation of the Main Turbine if the Main Stop valves fail to close
B. backfeeding a ruptured Main Steam line from the opposite Steam Generator
C. water from reaching the Main Steam Safety Valves due to the valves not designed to pass water
D. water hammer due to water condensing in the Main Steam line, from damaging the Steam
Generator tubes

A

B

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8
Q

Which ONE of the following statements identifies the purpose of the Main Steam System?

A. It supplies steam to the shaft packing on the Main Turbine and Main Feed Pump Turbines in
order to prevent air leakage into the Condenser and steam leakage into the Turbine Building.
B. It supplies superheated steam from the Steam Generators to the Main Turbine, Moisture
Separator Reheaters, Main Feed Pump Turbines, and Auxiliary Feed Pumps.
C. It removes excessive condensate from the Main Steam lines and Turbine valves on plant
startup and shutdown to ensure that water does not enter the Turbine.
D. It supplies reduced pressure, saturated steam to auxiliary components and heat exchangers.

A

B

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9
Q

What is the maximum percentage of rated steam flow that the nine (9) Main Steam Safety Valves
are capable of relieving for each Once Thru Steam Generator?

A. 80%
B. 100%
C. 120%
D. 140%

A

C

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10
Q

The Main Steam to Auxiliary Feed Pump Turbines (AFPT) has a 6” to 2 1/2” reducer in the line.
Which of the following statements describe the basis of the reducer?

A. Control the amount of reactivity added during blowdown of a Steam Generator due to a break
in the AFPT steam supply line.
B. Control the amount of energy discharged into the Auxiliary Building during blowdown of a
Steam Generator due to a break in the AFPT steam supply line.
C. Restrict the rate the AFPT steam supply line will backfeed the Main Steam line during a Main
Steam line break.
D. Restrict the rate the AFPT steam supply line will backfeed the Main Turbine due to the Main
Stop Valves failing to close.

A

B

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11
Q

What interlock for MS 199/314 Moisture Separator Reheater Reheat Steam Source valve must be
satisfied in order to OPEN the Moisture Separator Reheater Second Stage Reheat Steam Source
Valves?

A. 5% load on the main turbine
B. 5.5 psig cross around pressure
C. 9.0 psig cross around pressure
D. 50 MWe load on the main generator

A

C

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12
Q

Which ONE of the following Main Steam LOADS taps off upstream of the Main Steam Isolation
Valves?

A. Auxiliary Feed Pump Turbine 1
B. Main Feed Pump Turbine 2
C. Main Turbine
D. Turbine Bypass Valves

A

A

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13
Q

Given the following conditions:
The plant is operating at 29% power. All systems in normal alignments.
The Main Steam Isolation Valve for Steam Generator 1-2 inadvertently trips CLOSED.
Assuming no action by the crew, and prior to any control system response, which ONE (1) of the
following describes the immediate response of indicated level in Steam Generator 1 and Steam
Generator 2?

A. Steam Generator 1 level will RISE; Steam Generator 2 level will DROP.
B. Steam Generator 1 level will RISE; Steam Generator 2 level will RISE.
C. Steam Generator 1 level will DROP; Steam Generator 2 level will RISE.
D. Steam Generator 1 level will DROP; Steam Generator 2 level will DROP

A

A

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14
Q

The following plant conditions existed:
* The plant was at 50% power and 450 generated megawatts.
* All systems were in a normal lineup.
* Tave was 582°F.
A Turbine Bypass Valve then failed open.
Assuming no operator action, what will be the expected response of the following parameters 15
minutes after the TBV failed open ?
Reactor power will ___ 􀀿 Tave will ___ 􀀍 and generated megawatts will ___ _

A. remain the same; decrease; decrease
B. increase; decrease; remain the same
C. increase; remain the same; remain the same
D. remain the same; remain the same; decrease

A

C

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15
Q

Which ONE of the following choices correctly arranges the following components in order of the
normal flowpath from the Once Through Steam Generator to the Main Condenser?

  1. Main Steam Non-return valve
  2. Main Steam Safety Valves
  3. Main Steam Isolation Valves

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

A

B

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16
Q

Which ONE of the following is NOT supplied from Main Steam line 1-1?

A. Auxiliary Feed Pump Turbines
B. Dearator Pegging Steam
C. Main Feedwater Pump Turbines
D. MSR Second Stage Reheat

A

B

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17
Q

Which ONE of the following Main Steam LOADS taps off upstream of the Main Steam Isolation Valves?

A. Auxiliary Feed Pump Turbine 1
B. Main Feed Pump Turbine 2
C. Main Turbine
D. Turbine Bypass Valves

A

A

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18
Q

Which ONE of the following is supplied directly by the Main Steam System?

A. High Pressure Feedwater Heater 1-6 and 2-6
B. Moisture Separator Reheater First Stage Reheat Steam
C. Moisture Separator Reheater Second Stage Reheat Steam
D. Auxiliary Boiler Mud Drum Heating Coil

A

C

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19
Q

Which ONE of the following is the supply for the Main Steam to Auxiliary Steam reducer?

A. Main steam line 1
B. Main steam line 2
C. First Stage Extraction Steam
D. Second Stage Extraction Steam

A

A

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20
Q

Which ONE of the following is NOT supplied from Main Steam Line 1?

A. Auxiliary Steam
B. Auxiliary Feed Pump Turbine 1
C. Main Feed Pump Turbine 1
D. Moisture Separator Reheater 1 first stage reheat

A

D

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21
Q

Which Main Steam load taps off upstream of the Main Steam Isolation Valves?

A. Auxiliary Feed Pump Turbines
B. Main Feed Pump Turbines
C. Main Turbine
D. Steam Generators

A

A

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22
Q

Which of the following events will cause the Turbine Bypass Valves to transfer from controlling on the Main Steam Header pressure to controlling on the individual Steam Generator pressures?

A. All four Main Stop valves closing.
B. All four Circulating Water Pumps tripping.
C. Both Main Steam Isolation Valves closing.
D. Condenser Vacuum at 20” HgA.

A

A

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23
Q

The Reactor tripped due to a Steam Feed Rupture Control System Isolation trip.
The conditions for the trip have been cleared and resetting of the Steam Feed Rupture Control
System is in progress, in accordance with DB-OP-06910, Trip Recovery.
Which ONE of the following describes the response of an Main Steam Isolation Valve if an operator
depresses the RESET pushbutton for a MSIV?
Assume no other actions have been taken.

A. It will NOT reset unless the Main Steam Isolation Valve Bypass valve is open.
B. It will OPEN.
C. It will remain CLOSED.
D. It will cycle OPEN and CLOSED with the operation of the Reset pushbutton.

A

B

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24
Q

The following plant conditions exist:
A reactor TRIP has occurred from 100% reactor power.
Condenser pressure has RISEN to 20 inches Hg Absolute.
Motor Driven Feed Pump is supplying Main Feedwater
No Steam Feed Rupture Control System Trips have occurred.
Which ONE of the following describes the operation of the Atmospheric Vent Valves (AVVs)?

A. Automatically CYCLE open and closed between Steam Generator pressure of 1035 psig and
1025 psig.
B. MANUALLY operate to control Steam Generator pressure at 1050 psig.
C. MANUALLY operated to control Steam Generator press greater than 620 psig.
D. Automatically CYCLE open and closed to control Steam Generator pressure at 995 psig.

A

D

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25
Q

A Steam Feed Rupture Control System(SFRCS) isolation and actuation has occurred.
Which of the following describes the effect on the Main Steam Line Warm Up Drain valves, MS 375
and MS 394?

A. The valves will receive an OPEN signal.
8. The valves will receive a CLOSE signal.
C. The valves will not be affected unless an SFAS level 2 occurs.
D. The valves will not be affected unless a loss of Instrument Air occurs.

A

B

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26
Q

Which of the following choices are three conditions that will cause the turbine bypass valve control to transfer from the main steam header pressure transmitter to the Steam Generator pressure transmitter?

  1. Turbine trip
  2. Loss of condenser vacuum
  3. Atmospheric Vent Valves open
  4. Main Steam Isolation Valve close

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

A

B

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27
Q

Reactor power is 4%.
Event:
* MS 101, MSIV 1, inadvertently closes.
Which one of the following describes plant response?

A. Steam pressure control shifts to the AVVs at 870 psig, reactor power remains the same.
B. Steam pressure control shifts to the AVVs at 870 psig, reactor power will increase.
C. Steam pressure control shifts to the AVVs at 995 psig, reactor power remains the same.
D. Steam pressure control shifts to the AVVs at 995 psig, reactor power will increase.

A

A

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28
Q

Which ONE of the following conditions would NOT cause the Once Thru Steam Generator pressure
transmitters to automatically replace Main Steam header pressure transmitters as inputs to ICS for
header pressure control?

A. Turbine trip
B. Loss of vacuum, <17” HgA
C. MSIV <90% open
D. OTSG pressure >995 psig

A

D

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29
Q

Which ONE of the following will automatically close a Main Steam Isolation Valve?

A. A Main Turbine Trip
B. A Loss of instrument air
C. A Safety Feature Actuation System signal
D. A Steam Feed Rupture Control System isolation signal

A

D

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30
Q

The reactor tripped due to a SFRCS isolation trip.
The conditions for the trip have been cleared and recovery from the SFRCS trip is in progress.
Which one of the following describes the response of a Main Steam Isolation Valve (MSIV) when
an operator depresses the RESET pushbutton for the MSIV? (Assume no other actions have been
taken.)

A. The MSIV will remain closed if the MSIV bypass valve is open.
B. The MSIV will open unless the MSIV CLOSE pushbutton was depressed first.
C. The MSIV will remain closed unless the SFRCS low pressure trip is blocked.
D. The MSIV will open unless the differential pressure across the valve is less than 250 psig.

A

B

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31
Q

The following plant conditions exist:
A reactor trip has occurred from 100% power.
Condenser pressure has increased to 20” HgA.
Which one of the following describes the operation of the Atmospheric Vent Valves (AVV)?

A. Cycle open and closed between SG pressure of 1035 psig and 1025 psig.
B. Must be manually opened to control SG pressure less than 1050 psig.
C. Cycle open and closed to control SG pressure between 1100 psig and 1050 psig.
D. Cycle open and closed to control SG pressure at 995 psig.

A

D

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32
Q

Which ONE of the following conditions would require the operator to depress the AVV Block
pushbutton to open the AVV to control SG pressure?

A. SFRCS Isolation and Actuation trip has actuated.
B. Loss of Instrument Air has occurred.
C. MSIVs and TBVs are open.
D. SG pressures are less than 1025 psig.

A

A

33
Q

The following plant conditions exist:
* A complete loss of offsite power occurred approximately ten minutes ago.
* EDGs have started and loaded as required.
* The station blackout diesel generator has been started and is supplying Bus D2.
Which ONE of the following combinations lists TWO reasons why the turbine bypass valves would
NOT be available for controlling secondary side steam pressure?

  1. MS IVs (MS 100 & 101) have closed
  2. Condenser Pressure is too high
  3. Instrument Air can not be restored
  4. Bus YAU has been deenergized

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

A

A

34
Q

The following plant conditions exist:
* The unit is holding at 50% power while main turbine lubricating oil pressure fluctuations are
being investigated.
* All major controls are in AUTO.
* Main Steam pressure is 870 psig.
If an automatic turbine trip occurs, Main Steam pressure will be maintained at __ psig.

A. 870
B. 920
C. 995
D. 1025

A

C

35
Q

Which ONE of the following is the basis for the Control Room Alarm 12-2-A(B), SG 1 (2) TO AFPT
2(1) MN STM PRESS LO?

A. Prevent excess blowdown of a steam generator that will limit the amount of positive reactivity
added to the core.
B. Prevent robbing the auxiliary feed pump turbines of steam due to a rupture in their steam
supply lines.
C. Prevent backfeeding a rupture in one steam generator from the other steam generator to limit
the amount of blowdown in the unaffected steam generator.
D. Prevent exceeding environmental qualification by alerting the Control Room to a steam leak in
the AFPT steam supply line(s).

A

D

36
Q

The plant is operating at 60% power.
Which ONE of the following combinations indicates that a steam leak is occurring in
CONTAINMENT?

  1. Containment Temperature - RISING
  2. Containment FIRE ALARM(s)
  3. Containment Pressure - LOWERING
  4. Containment Radiation Levels - RISING

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

A

A

37
Q

Which one of the following are actions for a steam leak in the turbine building?

  1. Call the control room.
  2. Cordon off the area.
  3. Notify Security.
  4. Assess equipment damage.

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

A

A

38
Q

Which ONE of the following events will cause the Turbine Bypass Valves to fail closed?

A. All four Main Turbine Stop valves closing.
B. Instrument Air pressure at 65 psig and slowly lowering.
C. Both Atmospheric Vent valves opening.
D. Condenser pressure at 12” HgA and rising slowly.

A

B

39
Q

The basis for Control Room Alarm 12-2-A(B), SG 1(2) TO AFPT 2(1) MN STM PRESS LO is to
prevent ____ _

A. excess blowdown of a steam generator, which will limit the amount of positive reactivity added to the core
B. robbing the auxiliary feed pump turbines of steam due to a rupture in their steam supply lines
C. a steam leak from causing both steam generators to blowdown
D. excess blowdown of an unisolable steam leak into fan alley, which will prevent damaging equipment and instrumentation

A

D

40
Q

The following plant conditions exist:
o Reactor has tripped.
o Alarm 12-2-A, SG 1 TO AFPT 2 STM PRESS LO, has actuated.
Which ONE of the following describe the appropriate course of action?

A. Manually initiate SFRCS Isolation and Actuation.
B. Wait for SFRCS to actuate on low Main Steam pressure.
C. Attempt to isolate the leak or isolate AFW to SG 1 and open AVV 1.
D. Shutdown AFPT 2.

A

C

41
Q

Which ONE of the following increasing Containment parameters would NOT be an indication of a
steam leak inside of Containment?

A. Pressure
B. Radiation
C. Temperature
D. Containment Normal Sump level

A

B

42
Q

Which ONE of the following conditions would NOT cause the Once Thru Steam Generator pressure
transmitters to automatically replace Main Steam header pressure transmitters as inputs to ICS for
header pressure control?

A. Turbine trip
B. Loss of vacuum, <17” HgA
C. MSIV <90% open
D. OTSG pressure >995 psig

A

D

43
Q

Which ONE of the following combinations indicates that a steam leak is occurring in Containment?

  1. RISING Main Generator megawatts
  2. RISING Containment temperature
  3. RISING Containment pressure
  4. LOWERING Reactor Power as indicated by Ni’s
  5. RISING Normal Containment Sump level

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

A

D

44
Q

At what pressure do the Turbine Bypass Valves begin to open when they are in MANUAL assuming
no operator action?

A. 870 psig
B. 995 psig
C. 1025 psig
D. They won’t open in manual

A

C

45
Q

The plant is at 100% power and normal operations
If Steam Generator pressure begins to increase, the Atmospheric Vent Valves begin to OPEN
automatically at __ and are fully OPEN at __ .

A. 995 psig, 1005 psig
B. 1005 psig, 1015 psig
C. 1015 psig, 1025 psig
D. 1025 psig, 1035 psig

A

D

46
Q

Which ONE of the following is NOT a function of the Turbine Bypass Valves?

A. Balance Main Steam line loads at 100% power.
B. High Pressure relief for steam flows up to 25% rated flow.
C. Steam Generator pressure control after a normal reactor trip.
D. Steam Generator pressure control during startup of the Main Turbine.

A

A

47
Q

Which ONE of the following states the effects that a loss of YAU will have on the Atmospheric Vent
Valve(s) (AVV)?

A. AVV 1 will fail closed.
B. AVV 2 will fail closed.
C. AVV 1 will fail to 50% open.
D. AVV 2 will fail to 50% open.

A

A

48
Q

The Reactor tripped due to a Steam Feed Rupture Control System Isolation trip.
The conditions for the trip have been cleared and resetting of the Steam Feed Rupture Control
System is in progress, in accordance with DB-OP-06910, Trip Recovery.
Which ONE of the following describes the response of an Main Steam Isolation Valve if an operator
depresses the RESET pushbutton for a MSIV?
Assume no other actions have been taken.

A. It will NOT reset unless the Main Steam Isolation Valve Bypass valve is open.
B. It will OPEN.
C. It will remain CLOSED.
D. It will cycle OPEN and CLOSED with the operation of the Reset pushbutton.

A

B

49
Q

The following plant conditions exist:
A reactor TRIP has occurred from 100% reactor power.
Condenser pressure has RISEN to 20 inches Hg Absolute.
Motor Driven Feed Pump is supplying Main Feedwater
No Steam Feed Rupture Control System Trips have occurred.
Which ONE of the following describes the operation of the Atmospheric Vent Valves (AVVs)?

A. Automatically CYCLE open and closed between Steam Generator pressure of 1035 psig and
1025 psig.
B. MANUALLY operate to control Steam Generator pressure at 1050 psig.
C. MANUALLY operated to control Steam Generator press greater than 620 psig.
D. Automatically CYCLE open and closed to control Steam Generator pressure at 995 psig.

A

D

50
Q

Which ONE of the following conditions would require the operator to depress the AVV BLOCK
pushbutton to open the AVVs to control SG pressure when inadequate core cooling conditions
exist?

A. SFRCS isolation trip has actuated.
B. Loss of Instrument Air has occurred.
C. MSIVs and Turbine Bypass Valves are open.
D. SG pressures are less than 1025 psig.

A

A

51
Q

The following plant conditions exist:
A reactor trip has occurred from 100% power.
Condenser pressure has increased to 20” HgA.
Which one of the following describes the operation of the Atmospheric Vent Valves (AVV)?

A. Cycle open and closed between SG pressure of 1035 psig and 1025 psig.
B. Must be manually opened to control SG pressure less than 1050 psig.
C. Cycle open and closed to control SG pressure between 1100 psig and 1050 psig.
D. Cycle open and closed to control SG pressure at 995 psig.

A

D

52
Q

The following plant conditions exist:
The reactor and turbine are RESET
Unit Load Demand is at 55 MWe
The Steam header pressure setpoint is 870 psig
Which ONE of the following statements describes the response of the Turbine Bypass Valves to a
steam header pressure increase to 930 psig?

A. Valves OPEN to reduce pressure to the steam header pressure setpoint.
B. Valves OPEN to reduce pressure to the steam header pressure setpoint plus a 50 psig bias.
C. Valves OPEN to reduce pressure to the steam header pressure setpoint plus a 115 psig bias.
D. Valves remain SHUT since the steam header pressure setpoint plus the bias for the current
conditions has NOT been exceeded.

A

A

53
Q

The following plant conditions exist:
A reactor trip has occurred from 100% power.
Post-trip condenser pressure has increased to 20” HgA.
Which one of the following describes how main steam pressure will be controlled? Assume all
required operator actions have been taken for loss of condenser pressure only and the Unit
Supervisor has not routed to any other procedure.

A. AVVs cycle open and closed between SG pressure of 1025 psig and 1035 psig.
B. MSSVs control SG pressure about 1050 psig.
C. TBVs cycle open and closed to control SG pressure between 1025 psig and 1035 psig.
D. TBVs cycle open and closed to control SG pressure at 995 psig.

A

B

54
Q

Plant conditions:
The turbine tripped at 60% power.
The reactor failed to trip and the 480 Volt Unit Substation E2 and F2 breakers were momentarily
opened.
All CRD Breakers are still closed.
With the above conditions, Turbine Bypass Valves will control Header Pressure at __ psig.

A. 880
B. 930
C. 995
D. 1025

A

A

55
Q

The following plant conditions exist:
* The Reactor is at 2% power with a plant startup in progress
* The Motor Driven Feed Pump is supplying Main Feedwater
An equipment malfunction has caused Condenser pressure to rise to 20 inches Hg Absolute
No operator actions have been taken for the rising Condenser pressure
Which one of the following describes how Main Steam pressure will be controlled?

A. TBVs cycle open and closed to control SG pressure at 995 psig
B. TBVs cycle open and closed to control SG pressure between 1025 psig and 1035 psig
C. AVVs cycle open and closed to control SG pressure at 995 psig
D. AVVs cycle open and closed between SG pressure between 1025 psig and 1035 psig

A

C

56
Q

Which of of the following actions is NOT required according to DB-OP-02525, Steam Leaks, for a
non-isolable minor steam leak which does NOT pose a threat to personnel or equipment?

A. Erect warning signs.
B. Determine health effects.
C. Call the Control room.
D. Barricade the affected area.

A

B

57
Q

Which ONE of the following is an indication of a primary to secondary leak in a Steam Generator?

A. Radiation increase in letdown system
B. Vacuum system radiation element in alarm
C. Containment airborne radiation levels in alarm
D. Higher than normal Condenser Hotwell inventory/water level

A

B

58
Q

Which ONE of the following is an indication of a Main Steam Line break and NOT of a Loss of
Coolant Accident?

A. Lowering TAVE ·
B. Lowering Reactor Coolant System pressure.
C. Rising Containment pressure.
D. Rising Containment Normal Sump level.

A

A

59
Q

The reactor has tripped one day prior to the start of a scheduled shutdown for a Refueling Outage.
Which ONE of the following actions is the correct conservative response to a Turbine Bypass Valve
(TBV) failing open?

A. Send an Equipment Operator to manually isolate the TBV that has failed open.
B. Break Condenser vacuum to fail the valve closed.
C. Manually initiate SFRCS Isolation and Actuation.
D. Close the MSIV on the affected Main Steam line.

A

C

60
Q

The following plant conditions existed:
* The plant is at 50% power and 450 generated megawatts.
* All systems in a normal lineup.
* TAvE is 582 °F
A Turbine Bypass Valve fails open.
What will be the expected response of the following parameters 15 minutes after the Turbine
Bypass Valve failed open, assuming no operator action?
Reactor power will __ , TAVE will __ and generated megawatts will __ .

A. remain the same, lower, lower
B. rise, lower, remain the same
C. remain the same, remain the same, lower
D. rise, remain the same, remain the same

A

D

61
Q

Which ONE of the following explains why steam traps are BYPASSED during STARTUP and
SHUTDOWN of a system?

A. As a precaution to prevent an overcooling event from occurring
B. Due to the heavy demands on the steam trap
C. Steam traps are totally isolated < 15% power
D. Steam traps are in the NORMAL power mode until MODE 5

A

B

62
Q

Which ONE of the following describes the STARTUP mode of operation of a steam trap?
Blowdown Inlet Outlet Bypass
Valve Valve Valve Valve

A. open closed open open

B. closed closed closed open

C. closed open open throttled

D. open open open throttled

A

C

63
Q

Which ONE of the following describes the IN-SERVICE mode of operation of a steam trap during 100%
power operation?

Slowdown Inlet Outlet Bypass
Valve Valve Valve Valve

A. closed closed closed throttled

B. closed open open closed

C. throttled open open closed

D. throttled closed closed throttled

A

B

64
Q

Which ONE of the following is a distinct ADVANTAGE of utilizing Moisture Separator Reheaters in
the Davis-Besse steam cycle?

A. MINIMIZE erosion of the Low Pressure Turbine blading.
B. Make SUPER HEAT STEAM available for steam seals.
C. MINIMIZE erosion of the High Pressure Turbine blading.
D. MAXIMIZE efficiency of the High Pressure Turbine.

A

A

65
Q

FIRST stage reheat steam for the Moisture Separator Reheater is supplied by ___ _
SECOND stage reheat steam for the Moisture Separator Reheater is supplied by ___ _

A. High Pressure Turbine 5th stage Extraction Steam; Main Steam
B. Main Steam; High Pressure Turbine 2nd stage Extraction Steam
C. Main Steam; High Pressure Turbine 5th stage Extraction Steam
D. High Pressure Turbine 2nd stage Extraction Steam; Main Steam

A

D

66
Q

Which ONE of the following is the source of Moisture Separator Reheater FIRST stage reheating
steam?

A. Main Steam
B. 2nd stage Extraction Steam
C. 6th stage Extraction Steam
D. 10th stage Extraction Steam

A

B

67
Q

Which ONE of the following is the source of SECOND stage reheating steam to the Moisture
Separator Reheater’s?

A. Main steam
B. 2nd stage extraction steam
C. 6th stage extraction steam
D. 10th stage extraction steam

A

A

68
Q

Moisture Separator Reheater(MSR) Blanketing Steam is steam __ _

A. that maintains the tubes of the Moisture Separator Reheater HOT and AIR FREE during
turbine SHUTDOWN to prevent corrosion.
B. drawn from each Moisture Separator Reheater tube bundle INLET to assist in AIR removal
during OPERATION.
C. drawn from each Moisture Separator Reheater tube bundle OUTLET to assist in WATER
drainage from the reheater during OPERATION.
D. that maintains the tubes of the Moisture Separator Reheater HOT and WATER FREE during
turbine SHUTDOWN to prevent scale buildup.

A

A

69
Q

MS 199/MS 314, Reheat Steam Source Valves, CANNOT be OPENED until greater than __ _
load as sensed by pressure on the inlet to the ____ .

A. 10%; Low Pressure Turbine
B. 20%; Low Pressure Turbine
C. 10%; High Pressure Turbine
D. 20%; High Pressure Turbine

A

A

70
Q

The Moisture Separator Drain Tank and 1st Stage Reheater Drain Tank level control valves to the
main condenser automatically fail open when turbine load lowers below ___ _

A. 10%
B. 20%
C. 40%
D. 65%

A

A

71
Q

Which ONE of the following indications for the Moisture Separator Reheaters(MSR) can be read on
Control Room MSR AND HEATER DRAINS PANEL C5722?

A. MSR 1st Stage Inlet Pressure
B. MSR 2nd Stage Inlet Pressure
C. MSR 1st Stage Drain Tank Level
D. MSR 2nd Stage Drain Tank Level

A

B

72
Q

Which ONE of the following identifies the HIGH and LOW level alarm setpoints COMMON to all six
Moisture Separator Reheater system drain tanks?

A. High Level 17.5” above centerline
Low Level 17.5” below centerline
B. High Level 7.5” above centerline
Low Level 7.5” below centerline
C. High Level 17.5” above centerline
Low Level 7.5” below centerline
D. High Level 7.5” above centerline
Low Level 17.5” below centerline

A

A

73
Q

Given the following conditions:
Annunciator 14-4-A, MSR 1 1 ST STG DRN TK L VL, is LIT
Computer Point, L684, MSR 1 1 ST STG DRN TK High Level is in alarm
Which ONE of the following valve combinations is should be expected for this condition?
RD 154A, FIRST STAGE REHEAT DRAIN TANK CONDENSER DRAIN LEVEL CONTROL VALVE
is_.
RD 154B1, FIRST STAGE REHEAT DRAIN TANK NORMAL DRAIN LEVEL CONTROL VALVE
is_.

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

A

A

74
Q

Moisture Separator Reheater(MSR) scavenging steam is steam ___ _

A. that maintains the tubes of Moisture Separator Reheaters HOT and AIR FREE during turbine
SHUTDOWN to prevent scale buildup.
B. drawn from each Moisture Separator Reheater tube bundle OUTLET to assist in WATER
drainage from the reheater during OPERATION.
C. drawn from each Moisture Separator Reheater tube bundle INLET to assist in AIR removal
during OPERATION.
D. that maintains the tubes of the Moisture Separator Reheaters HOT and WATER FREE during
turbine SHUTDOWN to prevent corrosion.

A

B

75
Q

Which ONE of the following is the MAXIMUM allowable rate of change of reheating steam
temperature?

A. 100 °F/HR
B. 125 °F/HR
C. 200 °F/HR
D. 250 °F/HR

A

D

76
Q

MS 199/MS 314, Reheat Steam Source Valves, cannot be opened until greater than ___ _
load as sensed by pressure on the inlet to the ________ _

A. 10%; LP turbine
B. 20%; LP turbine
C. 10%; HP turbine
D. 20%; HP turbine

A

A

77
Q

Second stage reheat steam for the Moisture Separator Reheater (MSR) is supplied by
—-* while first stage reheat steam is supplied by __ .

A. Auxiliary Steam; High Pressure Turbine 5th stage Extraction Steam
B. Auxiliary Steam; High Pressure Turbine 2nd stage Extraction Steam
C. Main Steam; High Pressure Turbine 5th stage Extraction Steam
D. Main Steam; High Pressure Turbine 2nd stage Extraction Steam

A

D

78
Q

During plant startup, the ____ drains and ___ drains are opened by Control Room
switches to allow for MSR system condensate removal.

A. reheat steam high load valve; cross-around piping
B. reheat steam low load valve; shell pocket
C. reheat steam high load valve; reheat steam low load valve
D. cross-around piping; shell pocket

A

D

79
Q

Which ONE of the following statements identifies the purpose of the Moisture Separator Reheaters
(MSRs)?

A. MSRs maintain the Low Pressure Turbine casings hot and air free during turbine shutdown
B. MSRs remove moisture from High Pressure Turbine exhaust steam and reheat it to superheated conditions
C. MSRs minimize the amount of steam in the cross around piping, thus preventing Low Pressure Turbine overspeed on a turbine trip
D. MSRs act as a steam reservoir to provide steam to the Main Feed Pump Turbine’s upon a turbine trip

A

B

EO1 (14 decks)

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