HED Flashcards
Choose the statement that describes Moisture Separator Drain Tank (T-5) level control
operation.
A. Normal level control valve modulates to maintain T-5 level at approximately 65%
and the High Level Dump valve will open to the condenser when level in T-5
reaches 83%.
B. Heater 5A and 58 Outlet Drain valves modulate to maintain T-5 level approximately
65% and the Heater 5A and 58 High Level Dump valve will open to the condenser if
T-5 reaches 83%.
C. Normal level control valve modulates to maintain Main Feedwater pump suction
pressure >270 psia and the High Level Dump valve will open to the condenser to
maintain level in T-5 at approximately 65%.
D. Normal level control valve modulates to maintain Heater 5A and 58 level at
approximately 65% and the High Level Dump valve will open to the condenser
when level in T-5 reaches 80%.
A. Normal level control valve modulates to maintain T-5 level at approximately 65%
and the High Level Dump valve will open to the condenser when level in T-5
reaches 83%.
The functions of the Reheater Control System includes all but one of the following.
Which is NOT a function?
A. Ensures proper heating of the LP turbine during cold startups.
B. Minimizes asymmetrical loading on HP turbine.
C. Minimizes differential LP turbine metal temperatures during hot startups.
D. Provides smooth transition to 4000F from full temperature when reducing load
below 10% power.
B. Minimizes asymmetrical loading on HP turbine.
Select the Feedwater Heaters that can be isolated both on the Extraction Steam side
and the Feedwater side.
A. E-3A, E-3B; E-4A, E-4B; and E-5A, E-5B.
B. E-3A, E-3B; E-4A, E-4B; and E-6A, E-6B.
C. E-3A, E-3B; E-5A, E-5B; and E-6A, E-6B.
D. E-4A, E-4B; E-5A, E-5B; and E-6A, E-6B.
B. E-3A, E-3B; E-4A, E-4B; and E-6A, E-6B
Two inputs into the E-5A/E-5B Feedwater Heater shell side are:
A. Drain from the feedwater heater E-6A/E-6B; exhaust steam from the HP turbine.
B. Drain from the feedwater heater E-6A/E-6B; drain from the Reheater Drain Tank
T-4AIT-4B.
C. Extraction steam from the HP turbine; drain from the Reheater Drain Tank
T-4AIT-4B.
D. Drain shell side of the Moisture Separator Reheater T-9A/T-9B/T-9C/T-9D; drain
from the Reheater Drain Tank T-4A/T-4B.
A. Drain from the feedwater heater E-6A/E-6B; exhaust steam from the HP turbine.
Which of the following correctly describes the direct inputs into Moisture Separator
Drain Tank T-5?
Moisture Separator Drain Tank T-5 receives:
A. Drains from the Moisture Separator Reheaters; drain from the 1” turbine crossunder
piping; and drains from the 5A/B heaters.
B. Drains from the Reheater Drain Tanks T-4AIT-4B; drains from the 5A/B heaters;
and exhaust steam from the Moisture Separator Reheaters E-9B/9D.
C. Drains from feedwater heaters E-6A/E-6B and E-5A/E-5B; drain from the 1” turbine
crossunder piping; and drains from the Reheater Drain Tank T-4AIT-4B.
D. Drains from Moisture Separator Reheaters T-9A/T-9B/T-9C/T-9D shell side;
minimum (recirc) flow from the heater drain pumps P-10A/B; and drains from the
5A/B heaters.
A. Drains from the Moisture Separator Reheaters; drain from the 1” turbine crossunder
The purpose for the interface between the Condensate pumps and the Heater Drain
pumps is to:
A. raise the Heater Drain pump suction pressure preventing cavitation during normal
operations.
B. preheat Heater Drain pump seals prior to starting pump.
C. provide cool water to the Heater Drain pump suction via the Subcooling
Valves.
D. preheat the Moisture Separator Drain Tank (T-5) water prior to reaching the Heater
Drain pumps.
C. provide cool water to the Heater Drain pump suction via the Subcooling
Valves.
The Instrument Air System provides the motive force for operation of all the following
Extraction and Heater Drain components EXCEPT:
A. The feedwater heater level control valves.
B. T-5 and T-4 level control.
C. The trip/close function of the BTVs.
D. MSR steam control valves.
C. The trip/close function of the BTVs.
Match the Moisture Separator Reheater steam controls with their function. (Not all Function choices must be used) 1. Ramp Pushbutton 2. Manual Setpoint Knob 3. Reset Pushbutton 4. 400°F Pushbutton
a. Closes 6” reheat steam control valves
and resets the controller.
b. Energizes circuitry that opens 6” reheater
control valves over a two hour period.
c. Energizes controller and valve indication
lamps
d. Enables controller to position the 6”
reheater control valves to maintain 400°F
LP turbine inlet steam temperature.
e. Allow manual positioning of 6” reheat
control valves.
f. Energizes circuitry to position 6” reheater
steam control valves to the 400°F
position in 30 seconds.
BEAD
The effect of pushing the “Reset” pushbutton on the Moisture Separator Reheater
Control Panel is to:
A. Reset the controller only.
B. Close the 6-inch reheat steam control valves only.
C. Both reset the controller and close the 6-inch reheat steam control valves.
D. Both reset the controller and restart the ramp feature.
SOP-10
C. Both reset the controller and close the 6-inch reheat steam control valves.
When placed in Cascade Mode, CV-0610, Moisture Separator Reheater Drain Control
Valve, Controller DPIC-0609 displays which of the following parameters?
A. Blue pen indicates output signal to CV-061 O. Red pen indicates E-5 Feedwater
Heaters pressure.
B. Red pen indicates output signal to CV-061 O. Blue pen indicates E-5 Feedwater
Heaters pressure.
C. Blue pen indicates T-5 to E-5A/B differential pressure. Red pen indicates T-5
pressure.
D. Blue pen indicates T-5 pressure. Red pen indicates E-5 Feedwater Heaters
pressure.
D. Blue pen indicates T-5 pressure. Red pen indicates E-5 Feedwater Heaters
pressure.
The plant is at 30% loading and the operators are in the process of valving in the
reheater. What is the effect of pushing the “RAMP” pushbutton on the Moisture
Separator Reheater Control Panel?
A. Modulates opening of the Heater 5A and 58 Outlet Drain valves to maintain T-5
level at 65% thereby maintaining proper flow rate to the heater drain pumps.
B. Opens the reheater steam control valves over a two-hour period to assure there is
an acceptable rate of differential expansion between the LP turbine casing and
rotor.
C. Positions the reheater steam control valves to maintain L.P. crossover steam
temperature at 400°F.
D. Energizes circuitry to position 6” reheater steam control valves to the 400°F position
in 30 minutes.
B. Opens the reheater steam control valves over a two-hour period to assure there is
an acceptable rate of differential expansion between the LP turbine casing and
rotor.
The plant is at 100% power when a turbine trip occurs. Choose the statement that
describes the operation of Moisture Separator Drain Tank (T-5) pressure controller
(DPIC-0609) in response to the turbine trip.
A. Closes Equalizing Control Valve, CV-0610 and opens the Heater Drain pumps,
(P-10A/S) Subcooling Valves, CV-0716 and CV-0717.
B. Opens Equalizing Control Valve, CV-0610 and opens the Heater Drain pumps,
(P-1 OA/S) Subcooling Valves, CV-0716 and CV-0717.
C. Closes Equalizing Control Valve, CV-0610 and closes the Heater Drain pumps,
(P-10A/S) Subcooling Valves, CV-0716 and CV-0717.
D. Opens Equalizing Control Valve, CV-0610 and closes the Heater Drain pumps,
(P-1 OAlS) Subcooling Valves, CV-0716 and CV-0717.
A. Closes Equalizing Control Valve, CV-0610 and opens the Heater Drain pumps,
(P-10A/S) Subcooling Valves, CV-0716 and CV-0717.
Which one of the following describes the operation of the Moisture Separator and
Heater Drain Tank (T-5) pressure control system in response to a Turbine trip from
100% power?
A. MSR Drain Tank Pressure Control, CV-0610, closes and P-10A/S subcooling
valves, CV-0716 and CV-0717, open.
B. Only MSR Drain Tank Pressure Control, CV-0610, closes.
C. MSR Drain Tank Pressure Control, CV-061 0, opens and P-10A/S subcooling
valves, CV-0716 and CV-0717, open.
D. Only P-10AlS subcooling valves, CV-0716 and CV-0717, open.
A. MSR Drain Tank Pressure Control, CV-0610, closes and P-10A/S subcooling
valves, CV-0716 and CV-0717, open.
Select the condition that will directly trip a Heater Drain Pump.
A. Main Turbine high vibration trip due to moisture carryover.
B. Moisture Separator Drain Tank, (T-5) low pressure.
C. Moisture Separator Drain Tank, (T-5) low level.
D. Reheater Drain Tank, (T-4 A/B) low level.
C. Moisture Separator Drain Tank, (T-5) low level.
All EXCEPT one of the following will result in the Moisture Separator Reheater 6-inch
control valves closing. Which is the exception?
A. Instrument AC bus Y-01 is de-energized.
B. MCC-1 is de-energized.
C. Reset pushbutton on the Moisture Separator Reheater Control panel is pushed.
D. Power pushbutton on the Moisture Separator Reheater Control panel is pushed.
A. Instrument AC bus Y-01 is de-energized.
The plant is at 100% power when Heater Drain pump P-10A shaft shears.
The effects on the HED system include: The Moisture Separator Drain Tank T-5 level:
A. rises, T-5 Level Control Valve, CV-0608, closes, T-5 High Level Dump, CV-0609,
opens and Feedwater pump suction pressure rises.
B. rises, T-5 Level Control Valve, CV-0608, opens, T-5 High Level Dump, CV-0609,
opens and Feedwater pump suction pressure lowers.
C. rises, T-5 Level Control Valve, CV-0608, closes, T-5 High Level Dump, CV-0609,
opens and Feedwater pump suction pressure lowers.
D. lowers, T-5 Level Control Valve, CV-0608, opens, T-5 High Level Dump, CV-0609,
closes and Feedwater pump suction pressure rises.
B. rises, T-5 Level Control Valve, CV-0608, opens, T-5 High Level Dump, CV-0609,
opens and Feedwater pump suction pressure lowers.
Which one of the following describes the effect on Heater and Extraction Drains due to
bypassing a stage of feedwater heating?
A. Warmer feedwater from bypass of lower pressure heaters can result in higher shell
pressurees in up-stream feedwater heaters, causing less extraction flow into those
heaters. This can result in a low level condition.
B. Warmer feedwater from bypass of lower pressure heaters can result in lower shell
pressures in up-stream feedwater heaters, causing excess extraction flow into
those heaters. This can result in a high level condition, as normal drain cannot
handle volume.
C. Colder feedwater from bypass of lower pressure heaters can result in higher shell
pressures in up-stream feedwater heaters, causing less extraction flow into those
heaters. This can result in a low level condition.
D. Colder feedwater from bypass of lower pressure heaters can result in lower shell
pressures in up-stream feedwater heaters, causing excess extraction flow into
those heaters. This can result in a high level condition, as normal drain cannot
handle volume.
D. Colder feedwater from bypass of lower pressure heaters can result in lower shell
pressures in up-stream feedwater heaters, causing excess extraction flow into
those heaters. This can result in a high level condition, as normal drain cannot
handle volume.
Due to a possible tube leak in feedwater heater 2A, feedwater heaters 1A and 2A and
E-7A, Feedwater Heater Drain Cooler, have been bypassed.
Which one of the following is a potential consequence of opening the tube side vents
on these heaters?
A. Loss of condensate subcooling to the heater drain pumps due to isolating the return
flow path from CV-071 and CV0717 to the condenser.
B. The main condenser may experience a loss in vacuum.
C. Feedwater heaters E-4A and E-3A shell side susceptibility to condensate induced
water hammer is decreased.
D. Significant loss of plant efficiency due to lower feedwater heating in the low
pressure heaters.
B. The main condenser may experience a loss in vacuum.
A. Incorrect: The opening of the tube side vents has no impact on the operation of CV-0716 and CV-0717.
B. Correct:
C. Incorrect: Isolation of the heaters themselves may cause an increase in susceptibility to water, not a decrease. The opening of the tube vents will not cause this susceptibility to change.
D. Incorrect: A loss of feedwater heating in the low pressure heaters has little effect on feedwater temperature entering the SGs. The upstream heaters will compensate for the lower feedwater temperature by extracting more steam due to the colder entering feedwater thus robbing steam from the turbine that is producing megawatts. Very little effect on plant efficiency.
The plant is at 100% power.Alarm EK-0172 “ MOIST SEP DRAIN TANK HI-LO LEVEL”
is received.
Choose from the following what Control Room indications and alarms should be used
to validate this alarm.
A. - Moisture Separator Drain tank level indication.
- Condensate Pump low discharge pressure alarms.
- Heater Drain Pumps indicating lights.
B. - Heaters 5A/B level indicating lights.
- Main Feedwater pump discharge pressure.
- Reheater Drain Tank level indication and low level alarms.
C. - Heater Drain Pumps indicating lights.
- Moisture Separator Drain tank level indication.
- Heater Drain Pumps trip alarms.
D. - Main Feedwater pump low suction alarm.
- Moisture Separator Drain tank level indication.
- Heater Drain Pumps suction pressure indication.
C. - Heater Drain Pumps indicating lights.
- Moisture Separator Drain tank level indication.
- Heater Drain Pumps trip alarms.
-The plant is operating at 100% power.The plant is at 100% power.
-Alarm EK-0618 “FEEDWATER HEATERS HI LEVEL” is received.
Which of the following sets of indications should be used to validate this alarm?
A. Heater high level lights on C-11. Heater Levels on PPC.
B. Heater high level lights on C-11. High Level Dump Valve indicating lights on C-01.
C. High Level Dump Valve indicating lights on C-01. Heater Levels on PPC.
D. Moisture Separator Drain Tank Level. Feedwater temperatures on PPC.
B. Heater high level lights on C-11. High Level Dump Valve indicating lights on C-01.
Given the following:
-The plant is at 100% power.
-An electrical transient has occurred on Bus 1E.
-Alarm EK-0170, “HEATER DRAIN PUMPS TRIP” is received.
Which of the Control Room indications listed below will validate that the one of the
heater drain pumps has tripped?
A. Moisture Separator Drain Tank T-5 level rising, Feedwater pump suction pressure
lowering, P-10A pump amps decreasing.
B. Reheater Drain Tank T-4B level rising, Heater Drain Pump P-10B suction pressure
lowering, and Feedwater pump discharge pressure lowering.
C. Moisture Separator Drain Tank T-5 level lowering, Feedwater pump suction
pressure lowering, and Heater Drain Pump P-1OA suction pressure lowering.
D. Reheater Drain Tank T-4A level rising, Feedwater pump suction pressure lowering,
and Condensate Pump low discharge pressure alarms.
A. Moisture Separator Drain Tank T-5 level rising, Feedwater pump suction pressure
lowering, P-10A pump amps decreasing.
A. Correct:
S. Incorrect: Plausible if a trainee confuses the Reheater Drain with the MS drain tank. Heater drain
pump suction pressure is not indicated in the control room.
C. Incorrect: Plausible if trainee believes that the MS drain tank will lower as P-1 DAIS trips. Level will
increase since pump is no longer taking suction from T-5. Heater drain pump suction pressure is not
indicated in the control room.
D. Incorrect: Plausible if a trainee confuses the Reheater Drain with the MS drain tank.
Per SOP-1 0 “Extraction Steam and Heater Drain system” reactor power must be
(1) since expected feedwater temperature will (2) after removal of feedwater heating or bypassing of feedwater Heaters E-6A and E-6B.
(1) (2)
A. Raised Lower
B. Lowered Lower
C. Lowered Rise
D. Raised Rise
B. Lowered Lower
Given the following conditions:
-The plant is operating at 100% power.
-Due to a leak, Feedwater heater E-6A must be bypassed and isolated for repairs.
Which of the following actions must be taken prior to bypassing and isolating the
heater?
A. Reduce power to less than 97% to prevent exceeding reactor thermal power limits.
B. Reduce power to less than 97% to prevent exceeding turbine backpressure limits.
c. Reduce load to less than 600 MWe to prevent exceeding turbine backpressure
limits.
D. Reduce load to less than 600 MWe to prevent exceeding lower feedwater
temperature limits.
A. Reduce power to less than 97% to prevent exceeding reactor thermal power limits.
When bypassing feedwater heater E-6A, reactor power must be BLANK since expected feedwater temperature will BLANK. POWER FW TEMP A. Raised Lower B. Lowered Lower C. Lowered Rise D. Raised Rise
B. Lowered Lower
Given the following conditions:
-The plant is operating at 100% power.
-Annunciator EK-0168, “FEEDWATER HEATERS HI LEVEL” on panel C-11 is
alarming.
-A check of panel C-11 shows the “RED” Feedwater heater level indicating light
for heater E-58 is lit.
Which of the following actions must be taken if feedwater heater E-58 is bypassed?
A. 8ypass High Pressure Feedwater Heater 58, then reduce power to less than 97%,
bypass heater 68 and limit load to 600 MWe to prevent exceeding lower feedwater
temperature limits.
B. Bypass High Pressure Feedwater Heater 68, and then bypass heater 58 and
reduce load to 600 MWe to prevent exceeding turbine backpressure limits.
C. 8ypass High Pressure Feedwater Heater 68, and then bypass heater 58 and
reduce load to less 94% to prevent exceeding turbine backpressure limits.
D. Reduce power to less than 97%, bypass High Pressure Feedwater Heater 68, then
bypass heater 58 and limit load to 600 MWe to prevent excessive extraction steam
velocity in the next higher pressure heater.
D. Reduce power to less than 97%, bypass High Pressure Feedwater Heater 68, then
bypass heater 58 and limit load to 600 MWe to prevent excessive extraction steam
velocity in the next higher pressure heater.
A. Incorrect: Plausible if trainees understand that Heater 68 will also require bypassing but bypasses 58 first.
8. Incorrect: Plausible if trainees understand that Heater 68 must be bypassed before bypassing 58;
however, load must first be reduced to >97%.
C. Incorrect: Plausible if trainees understand that Heater 68 must be bypassed before bypassing 58;
however, load must first be reduced to >97% and then load limited to 600 MWe
D. Correct: per SOP-10.
Given the following:
-P-9A, Electric Fire Pump is out of service
A fire system rupture then occurs which causes Fire Water System pressure to lower to
65#. The rupture is then isolated. Which one of the following lists the Fire Water
Pumps that are expected to be in service? Assume no operator action occurs.
A. P-9B and P-41 only.
B. P-9B, P-41 , and P-13.
C. P-9B and P-13 only.
D. P-9B only.
B. P-9B, P-41 , and P-13.
Which one of the following describes the operation of the Moisture Separator and
Heater Drain Tank (T-5) pressure control system in response to a Turbine trip from
100% power?
A. MSR Drain Tank Pressure Control, CV-0610, closes and P-10A/S subcooling
valves, CV-0716 and CV-0717, open.
B. Only MSR Drain Tank Pressure Control, CV-0610, closes.
C. MSR Drain Tank Pressure Control, CV-0610, opens and P-10AlS subcooling
valves, CV-0716 and CV-0717, open.
D. Only P-10A/B subcooling valves, CV-0716 and CV-0717, open.
A. MSR Drain Tank Pressure Control, CV-0610, closes and P-10A/S subcooling
valves, CV-0716 and CV-0717, open.
Given the following conditions:
-The plant is operating at 100% power.
-A check of panel C-11 shows the “RED” Feedwater heater level indicating light
for heater E-6A is lit.
-Annunciator EK-0168, “FEEDWATER HEATERS HI LEVEL” on panel C-11 is
alarming
When bypassing feedwater heater E-6A, feedwater temperature will __ 1__
requiring reactor power to· be _2 __ to __ 3__
A. 1) lower; (2) lowered; (3) prevent exceeding rated thermal power limit of 2530 MWt.
B. (1) lower; (2) raised; (3) to ensure lower feedwater temperature limits are not exceeded.
C. (1) rise; (2) lowered; (3) prevent exceeding maximum thermal rating of the turbine
generator system.
D. (1) rise; (2) raised;(3) increase plant efficiency since there is less condensate preheating.
A. 1) lower; (2) lowered; (3) prevent exceeding rated thermal power limit of 2530 MWt.
Given the following conditions:
-The plant is operating at 100% power.
-Annunciator EK-0168, “FEEDWATER HEATERS HI LEVEL” on panel C-11 is
alarming.
-A check of panel C-11 shows the “RED” Feedwater heater level indicating light
for heater E-58 is lit.
Which of the following actions must be taken if feedwater heater E-58 is bypassed?
A. Bypass High Pressure Feedwater Heater 58, then reduce power to less than 97%,
bypass heater 68 and limit load to 600 MWe to prevent exceeding lower feedwater
temperature limits.
B. Bypass High Pressure Feedwater Heater 68, and then bypass heater 58 and
reduce load to 600 MWe to prevent exceeding turbine backpressure limits.
C. Bypass High Pressure Feedwater Heater 68, and then bypass heater 58 and
reduce load to less 94% to prevent exceeding turbine backpressure limits.
D. Reduce power to less than 97%, bypass High Pressure Feedwater Heater 68, then
bypass heater 58 and limit load to 600 MWe to prevent excessive extraction steam
velocity in the next higher pressure heater.
D. Reduce power to less than 97%, bypass High Pressure Feedwater Heater 68, then
bypass heater 58 and limit load to 600 MWe to prevent excessive extraction steam
velocity in the next higher pressure heater.
Due to a possible tube leak in feedwater heater 2A, feedwater heaters 1A and 2A and
E-7A, Feedwater Heater Drain Cooler, have been bypassed.
Which one of the following is a potential consequence of opening the tube side vents
on these heaters?
A. Loss of condensate subcooling to the heater drain pumps due to isolating the return
flow path from CV-071 and CV0717 to the condenser.
B. The main condenser may experience a loss in vacuum.
C. Feedwater heaters E-4A and E-3A shell side susceptibility to condensate induced
water hammer is decreased.
D. Significant loss of plant efficiency due to lower feedwater heating in the low
pressure heaters.
B. The main condenser may experience a loss in vacuum.
Given the following:
-The plant is at 100% power.
-An electrical transient has occurred on 8us 1E.
-Alarm EK-0170, “HEATER DRAIN PUMPS TRIP” is received.
Which of the Control Room indications listed below will validate that the one of the
heater drain pumps has tripped?
A. Moisture Separator Drain Tank T-5 level rising, Feedwater pump suction pressure lowering, and Heater Drain Pump P-1OA pump amps decreasing.
B. Reheater Drain Tank T-48 level rising, Heater Drain Pump P-108 suction pressure
lowering, and Feedwater pump discharge pressure lowering.
C. Moisture Separator Drain Tank T-5 level lowering, Feedwater pump suction
pressure lowering, and Heater Drain Pump P-10A suction pressure lowering.
D. Reheater Drain Tank T-4A level rising, Feedwater pump suction pressure lowering,
and Condensate Pump low discharge pressure alarms.
A. Moisture Separator Drain Tank T-5 level rising, Feedwater pump suction pressure lowering, and Heater Drain Pump P-1OA pump amps decreasing.
Which of the following correctly describes the direct inputs into Moisture Separator
Drain Tank T-5?
Moisture Separator Drain Tank T-5 receives:
A. Drains from the Moisture Separator Reheaters; drain from the 1” turbine crossunder
piping; and drains from the 5A/B heaters .
B. Drains from the Reheater Drain Tanks T-4A1T-4B; drains from the 5A1B heaters;
and exhaust steam from the Moisture Separator Reheaters E-9B/9D.
C. Drains from feedwater heaters E-6A1E-6B and E-5A1E-5B; drain from the 1” turbine
crossunder piping; and drains from the Reheater Drain Tank T-4A/T-4B.
D. Drains from Moisture Separator Reheaters T-9A1T-9B/T-9C/T-9D shell side; minimum (recirc) flow from the heater drain pumps P-10AlB; and drains from the 5A/B heaters.
C. Drains from feedwater heaters E-6A1E-6B and E-5A1E-5B; drain from the 1” turbine
crossunder piping; and drains from the Reheater Drain Tank T-4A/T-4B.
The plant is at 30% loading and the operators are in the process of valving in the
reheater. What is the effect of pushing the “RAMP” pushbutton on the Moisture
Separator Reheater Control Panel?
A. Modulates opening of the Heater 5A and 58 Outlet Drain valves to maintain T-5
level at 65% thereby maintaining proper flow rate to the heater drain pumps.
B. Opens the reheater steam control valves over a two-hour period to assure there is an acceptable rate of differential expansion between the LP turbine casing and
rotor.
C. Positions the reheater steam control valves to maintain L.P. crossover steam
temperature at 400QF.
D. Energizes circuitry to position 6” reheater steam control valves to the 400°F position
in 30 minutes.
B. Opens the reheater steam control valves over a two-hour period to assure there is an acceptable rate of differential expansion between the LP turbine casing and
rotor.
Two inputs into the E-5A/E-5B Feedwater Heater shell side are:
A. Drain from the feedwater heater E-6A/E-6B; extraction steam from the HP turbine.
B. Drain from the feedwater heater E-6A/E-6B; drain from the Reheater Drain Tank
T-4A/T-4B.
C. Extraction steam from the HP turbine; drain from the Reheater Drain Tank
T-4A/T-4B.
D. Drain shell side of the Moisture Separator Reheater T-9A/T-9B/T-9C/T-9D; drain
from the Reheater Drain Tank T-4A1T-4B.
A. Drain from the feedwater heater E-6A/E-6B extraction steam from the HP turbine.
The purpose for the interface between the Condensate pumps and the Heater Drain
pumps is to:
A. raise the Heater Drain pump suction pressure preventing cavitation during normal
operations.
B. preheat Heater Drain pump seals prior to starting pump.
C. provide cool water to the Heater Drain pump suction via the Subcooling Valves.
D. preheat the Moisture Separator Drain Tank (T-5) water prior to reaching the Heater
Drain pumps.
C. provide cool water to the Heater Drain pump suction via the Subcooling Valves.
The effect of pushing the “Reset” pushbutton on the Moisture Separator Reheater Control Panel is to:
A. Reset the controller only.
B. Close the 6-inch reheat steam control valves only.
C. Both reset the controller and close the 6-inch reheat steam control valves.
D. Both reset the controller and restart the ramp feature.
C. Both reset the controller and close the 6-inch reheat steam control valves.
The plant is at 100% power when a turbine trip occurs. Choose the statement that
describes the operation of Moisture Separator Drain Tank (T-5) pressure controller
(DPIC-0609) in response to the turbine trip.
A. Closes Equalizing Control Valve, CV-0610 and opens the Heater Drain pumps,
(P-10AlB) Subcooling Valves, CV-0716 and CV-0717.
B. Opens Equalizing Control Valve, CV-0610 and opens the Heater Drain pumps,
(P-10AlB) Subcooling Valves, CV-0716 and CV-0717.
C. Closes Equalizing Control Valve, CV-0610 and closes the Heater Drain pumps,
(P-10AlB) Subcooling Valves, CV-0716 and CV-0717.
D. Opens Equalizing Control Valve, CV-0610 and closes the Heater Drain pumps,
(P-10AlB) Subcooling Valves, CV-0716 and CV-0717.
A. Closes Equalizing Control Valve, CV-0610 and opens the Heater Drain pumps,
(P-10AlS) Subcooling Valves, CV-0716 and CV-0717.
Select the condition that will directly trip a Heater Drain Pump.
A. Main Turbine high vibration trip due to moisture carryover.
B. Moisture Separator Drain Tank, (T-5) low pressure.
C. Moisture Separator Drain Tank, (T-5) low level.
D. Reheater Drain Tank, (T-4 AlB) low level.
C. Moisture Separator Drain Tank, (T-5) low level.
Per SOP-1 0 “Extraction Steam and Heater Drain system” reactor power must be
(1) since expected feedwater temperature will (2) after removal of feedwater heating or bypassing of feedwater Heaters E-6A and E-6B.
A. Raised Lower
B. Lowered Lower
C. Lowered Rise
D. Raised Rise
B. Lowered Lower
The plant is operating at 100% power when Auxiliary Operators report unusual noises
coming from the Condenser. Your supervisor suspects extraction steam bellows
failure.
-4 MWe drop in output
-Hotwell chemistry indicators are degrading
-No significant weather changes (air temperature, humidity, winds, lake
temperature)
Given the above listed conditions, which of the following actions would NOT be helpful
in determining that extraction steam bellows failure as occurred?
A. Have Chemistry sample and analyze Condenser Off-gas.
B. Monitor and trend main generator Megawatt output.
C. Have Chemistry sample and analyze the hotwell.
D. Monitor and trend heater drain temperatures.
A. Have Chemistry sample and analyze Condenser Off-gas.
