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Test 3 > SDC > Flashcards

SDC Flashcards

1
Q

Per the FSAR, the Shutdown Cooling System functions to cool the Primary Coolant
System from 300°F to refueling temperature, assuming:
A. both the LPSI pumps are running.
B. two Service Water pumps are running.
C. a Service Water inlet temperature of greater than or equal to 85.0°F.
D. a Component Cooling Water temperature of 90°F.

A

D. a Component Cooling Water temperature of 90°F.

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2
Q

Following a forced shutdown to repair a leaking CRDM seal, it is desired to perform
ESSO-8, Shutdown Cooling Heat Exchanger Radiation Level Reduction, which
involves flushing the SDC Heat exchanger with the SIRW Tank. Which of the following
conditions will allow performance of this procedure?
ADVs = Atmospheric Dump Valves
MO-3015/3016 = Shutdown Cooling Water Return Valves.
A. MODE 4, ADVs available, MO-3015/3016 CLOSED
B. MODE 5, ADVs isolated, MO-3015/3016 OPEN
C. MODE 4, ADVs isolated, MO-3015/3016 OPEN
D. MODE 5, ADVs available, MO-3015/3016 CLOSED

A

A. MODE 4, ADVs available, MO-3015/3016 CLOSED

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3
Q

The plant is in Mode 5 on Shutdown Cooling. Temperature is stable at 1050 F. A plant
transient occurs on the SDC system, and the NCO notices PCS temperature lowering.
Which one of the following accounts for the above conditions?
A. CV-3025, SDC TCV failed closed.
B. CV-3025, SDC TCV failed open.
C. CV-3006, SDC Flow Control Valve (Hx Bypass) failed open.
D. CV-3055, Inlet to SDC Hx failed closed.

A

B. CV-3025, SDC TCV failed open.

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4
Q

The plant is in MODE 5 on Shutdown Cooling with PCS temperature stable at 105 of.
A plant transient occurs on the SDC system and the Reactor Operator notices PCS
temperature lowering. Which one of the following accounts for the above conditions
and what is the maximum allowable cooldown rate?
A. CV-3025, SDC Heat Exchanger Outlet, failed open, 40 OF/Hour.
B. CV-3025, SDC Heat Exchanger Outlet, failed open, 20 OF/Hour.
C. CV-3006, SDC Heat Exchanger Bypass, failed open, 20 OF/Hour.
D. CV-3006, SDC Heat Exchanger Bypass, failed closed, 40 OF/Hour.

A

B. CV-3025, SDC Heat Exchanger Outlet, failed open, 20 OF/Hour

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5
Q

Which system interfaces with the Shutdown Cooling System for the purpose of
providing a backup source of PCS cooling medium during a loss of SDC?
A. Service Water System
B. Component Cooling Water
C. Spent Fuel Pool Cooling
D. Fire Protection System

A

C. Spent Fuel Pool Cooling

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6
Q

The plant is currently in a refueling outage. The plant has been shut down for the past
five days and the Shutdown Cooling System is currently in operation. The PCS is at
110°F and the Pressurizer is vented to the Containment atmosphere. The following
plant parameter changes were observed:
Pressurizer Level is decreasing
Low Pressure Safety Injection Pump flow has decreased
Quench tank level is increasing
Containment Radiation Monitors are reading normal
Which ONE of the following events is consistent with the above conditions?
A. Shutdown Cooling Suction Line Relief Valve RV-3164 has lifted
B. Shutdown Cooling Containment Isolation Valve Pressure Relief Valve RV-0401 has
lifted
C. PCP Controlled Bleed-off Return line Relief Valve RV-2062 has lifted
D. Shutdown Cooling Temperature Control Valve CV-3025 has closed

A

A. Shutdown Cooling Suction Line Relief Valve RV-3164 has lifted

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7
Q 
Which one of the following lists the power supplies for MO-3015 and MO-3016 SDC Inlet MOVs
MO-3015  MO-3016
A.  MCC-1  MCC-1
B.  MCC-2  MCC-2
C.  MCC-1  MCC-2
D.  MCC-2  MCC-1
A

C. MCC-1 MCC-2

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8
Q

The function of FIC-0306, Shutdown Cooling (SDC) Flow Indicating Controller, is to
provide Control Room indication of:
A. SDC Heat Exchanger flow.
B. total CCW flow to SDC Heat Exchangers.
C. total SDC return flow.
D. SDC total SDC Heat Exchanger Bypass flow.

A

C. total SDC return flow

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9
Q

Which ONE of the following is correct concerning the operation of FIC-0306, Shutdown
Cooling Flow Indicating Controller, located on panel C-02?
A. In AUTO, the operator can select a total Shutdown Cooling flow rate for CV-3006,
SDC Hx Bypass Valve, to maintain.
B. The maximum controller output signal to CV-3006 results in the valve going FULL
OPEN.
C. A blinking PF light indicates that control of CV-3006 has been transferred to panel
C-33.
D. If power is lost to FIC-0306 for 5 seconds, CV-3006 will be FULL OPEN.

A

D. If power is lost to FIC-0306 for 5 seconds, CV-3006 will be FULL OPEN.

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10
Q

Which ONE of the following describes the operation of HIC-3025A, SDC Hx Outlet Vlv
Controller, located on panel C-02?
A. In AUTO, the operator can select a specific SDC Heat Exchanger flow rate to be
maintained.
B~ The maximum controller output signal to CV-3025, SDC Hx Outlet, results in the
valve going FULL OPEN.
C. A blinking PF light indicates that control of CV-3025, has been transferred to panel
C-33.
D. If power is lost to HIC-3025A for 5 seconds, CV-3025 will be FULL OPEN.

A

B. The maximum controller output signal to CV-3025, SDC Hx Outlet, results in the
valve going FULL OPEN.

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11
Q

The plant is on Shutdown Cooling. PCS temperature has been stabilized at 103°F as
indicated by the average of the qualified core exit thermocouples. Due to maintenance
in the Control Room it has been decided to control CV-3006, SDC Hx Bypass, and
CV-3025, SDC Hx Outlet, from the C-33 panel.
Which ONE of the following describes the actions necessary to take control of
CV-3006 from C-33?
A. Place HS-3060B keyswitch in the Control Room to “OFF”.
B. Place HIC-0306 at C-33 panel to “AUTO”.
C. Place HIC-0306 at C-33 panel to “MANUAL”.
D. Place HS-3060B Keyswitch in the Control Room to “AUTO”.

A

C~ Place HIC-0306 at C-33 panel to “MANUAL”.

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12
Q

Given the following conditions:
• The plant is on Shutdown Cooling.
• FIC-0306, SO CLG HXS BYPASS, on C-02 is being controlled at 3000 gpm.
With the controller maintained in this configuration, if power is lost to the controller
FIC-0306 C-02 for approximately 15 seconds and then restored, the flow through
CV-3006 will be:
A. 0 gpm.
B. 1000 gpm.
C. 3000 gpm.
D. maximum.

A

D. maximum.

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13
Q

Which ONE of the following PCS pressure values would (on a reducing PCS pressure)
first allow opening of MO-3015 and MO-3016, SDC inlet from PCS Loop 2?
A. 210 psia
B. 265 psia
C. 285 psia
D. 300 psia

A

B. 265 psia

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14
Q

Which ONE of the following describes the pressure interlock for MO-3015 and
MO-3016, Shutdown Cooling inlet valves?
A. Primary Coolant System (PCS) pressure above 275 psia on EITHER PS-01 04A or
PS-01 04B will cause automatic closure of BOTH MO-3015 and MO-3016.
B. PCS pressure below 275 psia on EITHER PS-01 04A or PS-01 04B will allow BOTH
valves to be opened.
C. PCS pressure below 275 psia on PS-01 04A will allow MO-3015 to be opened;
pressure below 275 psia on PS-0104B will allow MO-3016 to be opened.
D. PCS pressure above 275 psia on PS-01 04A will auto close BOTH MO-3016 and
MO-3015.
DBD
Friday,

A

C. PCS pressure below 275 psia on PS-01 04A will allow MO-3015 to be opened;
pressure below 275 psia on PS-0104B will allow MO-3016 to be opened.

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15
Q

The plant is on Shutdown Cooling when a loss of Component Cooling Water occurs.
Which ONE of the following describes the resulting effect on the SDC system?
A. The non-operating LPSI pump will not start from no seal cooling available.
B. The operating LPSI pump trips due to no seal cooling available.
C. SDC inlet temperature lowers.
D. SDC outlet temperature rises.

A

D. SDC outlet temperature rises.

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16
Q

With the plant on Shutdown Cooling and NO Primary Coolant Pumps operating, a
controller malfunction results in CV-3025, SDC Hx Outlet Valve, CLOSING. What
long-term effect will this malfunction have on the Primary Coolant System?
A. Thots rise, Tcolds remain stable.
B. Thots rise, Tcolds rise.
C. Thots remain stable, Tcolds rise.
D. Thots remain stable, Tcolds remain stable.

A

B. Thots rise, Tcolds rise.

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17
Q

Given the following:
pes temperature is 175°F
pes pressure is 250 psia
- The Pressurizer is solid.
- The plant is being cooled down in preparation for refueling with Shutdown
cooling and LPSI Pump P-67A.
- SDe Heat Exchanger Inlet Valve, CV-3055, suddenly closes.
Assuming no operator action is taken, what will be the result of this event?
A. LPSI Pump flow oscillates and returns to previous value, Pressurizer pressure rises,
and PCS temperature begins to lower.
B. LPSI Pump flow rises and Pressurizer pressure rises. PCS temperature begins to
lower.
C. LPSI Pump flow oscillates and returns to previous value, Pressurizer pressure rise,
and PCS temperature begins to rise.
D. LPSI Pump flow lowers and Pressurizer pressure lowers. pes temperature begins to lower.

A

C. LPSI Pump flow oscillates and returns to previous value, Pressurizer pressure rise,

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18
Q

Regarding operation of the Shutdown Cooling System, “vortexing” is a term used to
describe a particular concern when the PCS is:
A. in Reduced Inventory.
B. vented.
C. not vented.
D. solid.

A

A. in Reduced Inventory.

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19
Q

While closing MO-3016, SDC from PCS Isolation Vlv, the following valid alarm
annunicates:
• EK-0712, “SHUTDOWN COOLING MOV OVERLOAD”
This condition means that the valve operating motor will:
A. deenergize immediately.
B. remain energized and continue to attempt valve closure.
c. remain energized until actuation of a protective thermocouple.
D. deenergize 10 seconds after BLUE overload light comes on.

A

B:t remain energized and continue to attempt valve closure.

20
Q

The plant is on Shutdown Cooling (SDC) and in Reduced Inventory when the following
valid alarm annunciates:
• EK-1162, “LPSI PUMP LOW DISCH PRESSURE”
No other alarms have annunciated.
What is the impact on operation of the SDC System?
A. A potential loss of all SDC is occurring due to possible air binding of the running
LPSI pump.
B. A second LPSI pump should be immediately started to ensure required SDC return
flow.
C. SDC Hx Bypass, CV-3006 should be closed to cool the PCS which will raise pump
discharge pressure.
D. The running LPSI pump has tripped and the other pump must be started to restore SDC flow

A

A. A potential loss of all SDC is occurring due to possible air binding of the running
LPSI pump.

21
Q

What alternate indication is available in the Control Room to verify the following alarm?
EK-0712 “SHUTDOWN COOLING MOV OVERLOAD”
A. Ammeter for the MOV motor
B. Blue overload light above MOV handswitch
C. LPSI Pump discharge pressure gauge
D. Shutdown Cooling flow

A

B. Blue overload light above MOV handswitch

22
Q

Given the following conditions:
• Mode 6 Refueling Cavity - 638’.
• Plant is on Shutdown Cooling.
• P-67B LPSI pump is operating.
• P-67A LPSI pump is OFF.
Per Technical Specifications, what action, if any, is required if P-67A breaker is
determined to be inoperable?
A. None, as long as P-67B remains operable
B. None, as long as PCS remains less than 647’
C. Initiate action IMMEDIATELY to restore P-67A operable
D. Within 1 hour, initiate action to raise cavity level greater than 647’

A

C. Initiate action IMMEDIATELY to restore P-67A operable

23
Q

Given the following conditions:
- The plant is in MODE 5.
- PCS is at 623’ with S/G nozzle dams installed.
- The Shutdown Cooling System is controlling PCS temperature at 103°F.
- T-91, Utility Water Storage Tank, batch release is in progress
- The batch release calculation assumed two Service Water Pumps in operation.
- Main Condenser East and West Waterboxes are open for installation of a
modification
- Service Water Pumps P-7A and P-7B are in service.
- Service Water Pump P-7C is tagged out for bearing replacement.
- Both Cooling Tower Pumps P-39A/B are available, but not in service.
- The Canal Sample Pump is in service.
The Secondary AO reports that the basket strainer on P-7A discharge appears to be
clogging as indicated by differential pressure trending steadily upward. A crew brief is
held to discuss removing P-7A from service to disassemble and clean the basket
strainer.
For the above plant conditions, what are the implications of the proposed maintenance
on the SW pump basket strainer?
A. Plant will have Required Actions per LCO 3.4.8 PCS Loops - MODE 5, Loops not
filled. Terminate the batch release before stopping P-7A
B. Plant will have Required Actions per LCO 3.4.8 PCS Loops - MODE 5, Loops not
filled. Establish 15 minute periodic sampling of batch release flow
C. Plant will have Required Actions per LCO 3.7.8 Service Water System. Terminate
the batch release before stopping P-7A
D. Plant will have Required Actions per LCO 3.7.8 Service Water System. Start a
Dilution Water Pump before stopping P-7A

A

A. Plant will have Required Actions per LCO 3.4.8 PCS Loops - MODE 5, Loops not
filled. Terminate the batch release before stopping P-7A

24
Q

The following plant conditions exist:
• Plant is in MODE 6 with a PCS Temperature of 110°F.
• Reactor Cavity water level is 638’.
• Shutdown cooling is being provided by LPSI Pump, P-67 A, with LPSI Pump,
P-67B, secured.
• While transferring LPSI Pumps for Shutdown Cooling, P-67B breaker 152-111,
failed to close after several attempts.
Which one of the following is the minimum action that is required to be taken
immediately?
Restore P-67B breaker to operable status:
A. AND establish reactor cavity water level = 647’.
B. AND close all containment penetrations providing direct access from containment to
outside atmosphere.
C. OR establish reactor cavity water level = 647’
D. OR close all containment penetrations providing direct access from containment to
outside atmosphere.

A

C. OR establish reactor cavity water level = 647’

25
Q

Assume the plant is on Shutdown Cooling when a complete loss of Instrument Air
occurs.
Which of the following describes the effect on the Shutdown Cooling System and on
the Primary Coolant System (PCS)?
A. Since CV-3006, SDC Hx Bypass, fails CLOSED, the PCS will begin to heat up
B. Since CV-3025, SDC Hx Outlet, fails CLOSED, the PCS will begin to heat up
C. Since CV-3006, SDC Hx Bypass, fails OPEN, there is a concern for PCS
overcooling
D. Since CV-3025, SDC Hx Outlet fails OPEN, there is a concern for PCS overcooling

A

B. Since CV-3025, SDC Hx Outlet, fails CLOSED, the PCS will begin to heat up

26
Q

Given the following conditions:
- The plant is in MODE 5.
- PCS is at 623’ with S/G nozzle dams installed.
- The Shutdown Cooling System is controlling PCS temperature at 103°F.
- T-91, Utility Water Storage Tank, batch release is in progress
- The batch release calculation assumed two Service Water Pumps in operation.
- Main Condenser East and West Waterboxes are open for installation of a
modification.
- Service Water Pumps P-7A and P-7B are in service.
- Service Water Pump P-7C is tagged out for bearing replacement.
- Both Cooling Tower Pumps P-39A/B are available, but not in service.
- The Canal Sample Pump is in service.
The Secondary AO reports that the basket strainer on P-7A discharge appears to be
clogging as indicated by differential pressure trending steadily upward. A crew brief is
held to discuss removing P-7A from service to disassemble and clean the basket
strainer.
For the above plant conditions, what are the implications of the proposed maintenance
on the SW pump basket strainer?
A. Plant will have Required Actions per LCO 3.4.8 PCS Loops - MODE 5, Loops not
filled. Terminate the batch release before stopping P-7A
B. Plant will have Required Actions per LCO 3.4.8 PCS Loops - MODE 5, Loops not
filled. Establish 15 minute periodic sampling of batch release flow
C. Plant will have Required Actions per LCO 3.7.8 Service Water System. Terminate
the batch release before stopping P-7A
D. Plant will have Required Actions per LCO 3.7.8 Service Water System. Start a
Dilution Water Pump before stopping P-7A

A

A’! Plant will have Required Actions per LCO 3.4.8 PCS Loops - MODE 5, Loops not
filled. Terminate the batch release before stopping P-7A

27
Q

Which of the plant conditions listed below meet the requirements for Shutdown Cooling
in accordance with Technical Specification 3.4.7 “PCS Loops - Mode 5, Loops Filled”?
A. SDC in service using LPSI Pump P-67B, PCS avg temperature is 210°F, PCS is
intact, both S/G levels are at 45%, and LPSI Pump P-67A is operable and not
running.
B. SDC in service using LPSI Pump P-67B, PCS avg temperature is 140°F, PCS is
vented and the Pressurizer manway removed, both S/G levels are at 45%, and
LPSI Pump P-67A is operable and not running.
C. SDC is in service using LPSI Pump P-67B, PCS avg temperature is 190°F, PCS is
intact, both S/G levels are at 45%, and LPSI Pump P-67A is operable and not
running.
D. Plant is refueling with reactor cavity level at 621’ 6”, SDC is in service using LPSI
Pump P-67B, PCS avg temperature is 95°F, PCS is vented, PZR level is 20% and
the S/G hot leg nozzle dams are installed.

A

C~ SDC is in service using LPSI Pump P-67B, PCS avg temperature is 190°F, PCS is
intact, both S/G levels are at 45%, and LPSI Pump P-67A is operable and not
running.

28
Q

The plant is on Shutdown Cooling with CV-3006, SDC Hx Bypass Valve, throttled as
needed. If the air line to CV-3006 is damaged such that NO operating air is supplied,
what would be the resulting valve position and the reason for it? CV-3006 would fail:
A. OPEN, to prevent runout of the operating LPSI Pump
B. CLOSED, to prevent runout of the operating LPSI Pump
C. OPEN, since that is the fail safe position for an SIAS
D. CLOSED, since that is the fail safe position for a RAS

A

C~ OPEN, since that is the fail safe position for an SIAS

29
Q

With Shutdown Cooling in service and PCS temperature greater than 185°F, the
operators are required to maintain PCS subcooling = 25°F. This requirement ensures
that:
A. any operating Primary Coolant Pump has adequate suction head.
B. the operating LPSI pump does not become steam bound.
C. the heat load on the CCW system is not excessive.
D. LTOP does not actuate.

A

B. the operating LPSI pump does not become steam bound.

30
Q

The plant is in MODE 5 and on Shutdown Cooling following a planned maintenance
shutdown. While maintenance activities are in progress, I&C requests permission to
perform work on the PCS RTDs that provide the PCS temperature input for LTOP.
LTOP is in the Shutdown Cooling (SDC) Mode.
Why should the Shift Manager deny (allow) this work to progress?
A. Deny. LTOP will open the PORVs if these RTDs are removed from service.
B. Deny. The PORVs will not open on a high PCS pressure without the RTDs.
C. Allow. LTOP is designed to open on a fixed setpoint while in SDC Mode.
D. Allow. The Shutdown Cooling System is protected by the SDC Relief valve.

A

B~ Deny. The PORVs will not open on a high PCS pressure without the RTDs.

31
Q

A precaution in SOP-3 states the shutdown cooling piping should NOT be
depressurized if the SDC system is isolated with piping fluid temperatures greater than
210°F? This precaution:
A. prevents overpressure conditions on the shell side of the SOC heat exchangers.
B. precludes steam binding of the containment spray pumps.
C. ensures boron stratification does not occur as Psat approaches Tsat conditions.
D. prevents steam binding of the safety injection pumps and potentially severe water
hammer from occurring.

A

D. prevents steam binding of the safety injection pumps and potentially severe water
hammer from occurring.

32
Q

Describe the flow path from the PCS through the Shutdown Cooling (SDC) System
back to the PCS during initial heatup of the SDC.

A
  1. Suction from Loop 2 Hot Leg
  2. To LPSI suction MOVs from PCS
  3. To a LPSI pump
  4. To CV-3006 (full open) (SDC Hx fully bypassed)
  5. To one LPSI Loop injection MOV back to PCS
33
Q

During the performance of actions for heating the Shutdown Cooling System, SOP-3
directs the operator to throttle open ONE LPSI Injection Valve for approximately 2
seconds prior to starting a LPSI pump.
What is the concern if the operator throttles open one LPSI Injection Valve for 5 full
seconds prior to starting the LPSI pump?
A. The SDC system may not heat up to operating temperature.
A. The SDC system could heat up too quickly.
C. The LPSI pump may not have 170 gpm required minimum flow.
D. The LPSI pump would cavitate due to inadequate suction.

A

A. The SDC system could heat up too quickly.

34
Q

Per SOP-3, during a heatup of the Shutdown Cooling System, the operator is
prohibited from having MO-3198, P-67A Suction from SIRWT, and MO-3199, P-67A
Suction from PCS, open simultaneously when the plant is above Mode 5.
What concern is being addressed by this procedure restriction?
A. Loss of PCS inventory
B. Vortexing at suction of P-67A
C. Runout of P-67A
D Vapor Binding of SI piping.

A

D Vapor Binding of SI piping.

35
Q

During warm up of the Shut Down Cooling system in preparation for placing Shutdown
Cooling in service, SOP 3, 7.3.2 temporarily has the suction flow path to Low Pressure
Safety Injection Pumps P-67A and P-678 isolated until Shutdown Cooling MOVs
MO-3015 and MO-3016 are opened from the PCS.
What is the reason for isolating the SIRW tank and the Containment Sump flowpaths
from the LPSI Pumps P-67A and P-678 prior to opening MO-3015 and MO-3016?
A. The suction lines to the HPSI Pumps are not rated for the pressures experienced
when on Shutdown Cooling.
B. To avoid the possibility of draining the contents of the SIRW Tank into the PCS
while going on Shutdown Cooling.
C. To avoid the possibility of vapor binding the safety Injection piping while above
MODE 5.
D. To prevent a direct flow path of PCS to the environment if SIRW valves were
inadvertently left open.

A

C. To avoid the possibility of vapor binding the safety Injection piping while above
MODE 5

36
Q

Given the following plant conditions:
• Normal shutdown in progress.
• PCS is solid.
The operators have just placed Shutdown Cooling in service and adjusted CV-3025,
SDC Hx Outlet Valve, and CV-3006, SDC Hx Bypass Valve, to achieve the desired
PCS cooldown rate. If it is desired to STOP the cooldown rate, why should
adjustments to CV-3025 be made SLOWLY?
A. To prevent LPSI pump runout.
B. To ensure LPSI pump minimum flow is maintained.
C. PCS pressure may rise significantly from temperature change.
D. CV-3006 control band capability may be exceeded.

A

C. PCS pressure may rise significantly from temperature change.

37
Q

The plant is on Shutdown Cooling.
- PCS temperature is 110° F and stable.
- PCS pressure is at atmospheric conditions.
- All Primary Coolant Pumps have been secured.
- The PCS has not been vented.
While controlling PCS temperatures with Shutdown Cooling System a loss of Y-01
occurs.
Which of the following is a concern for the Operators under these conditions?
A. Exceeding the PCS cooldown rate.
B. Loss of Shutdown Cooling flow.
C. PCS pressure rise to LTOP setpoint.
D. Loss of CCW flow for temperature control.

A

C. PCS pressure rise to LTOP setpoint.

38
Q

TR-0351 on Panel C-02 for the Shutdown Cooling System (SDC) is equipped with a
BLUE pen and a RED pen. What two parameters are indicated by these pens?
A. PCS temperature and pressure
B. Wide Range hot and cold leg temperatures
C. SDC system total flow rate and outlet temperature
D. SDC system inlet and outlet temperature

A

D. SDC system inlet and outlet temperature

39
Q

With the plant on Shutdown Cooling (SDC) and PCS in Reduced Inventory condition,
what is the consequence of having only ONE operable LPSI pump?
A. BOTH LPSls are needed since heat load is greater.
B. BOTH LPSls are needed to avoid “vortexing.”
C. Greater likelihood of a complete loss of SDC.
O. Unbalanced flows through the SOC heat exchangers.

A

C. Greater likelihood of a complete loss of SDC

40
Q 
Given the following conditions:
• Plant is on Shutdown Cooling
• It is desired to use LG-01 05, Refueling Level Gauge
What is the concern with placing LG-0105 with actual Pressurizer level at 98%?
A. Inadvertent actuation of LTOP
B. It would provide a false low level
C. Drawing a vacuum on the PCS
D. Inadvertent radioactive liquid spill
A

D. Inadvertent radioactive liquid spill

41
Q

During a PCS draindown, which ONE of the following is the highest level that requires
entry into a “Reduced Inventory” condition?
A. 628’ A”
B. 622’ 11”
C. 618’ 2.5”
D. 615’ 0”

A

B. 622’ 11”

42
Q

Given the following plant conditions:
• The reactor has been shut down for 10 days.
• Shutdown Cooling is in service.
• The PCS is filled and intact with both S/Gs at 50% level.
• PCS temperature = 120°F.
What is the correct response to a request to secure Shutdown Cooling flow to support
valve testing? Shutdown Cooling flow ….
A. cannot be secured.
B. may be secured for a maximum of 15 minutes.
C. may be secured for a maximum of 1/2 hour.
D. may be secured for a maximum of 1 hour.

A

B~ may be secured for a maximum of 15 minutes.

43
Q

The head has just been re-installed and tensioned. The PCS is filled to 628 feet and is
stable at 110°F. Based on decay heat it will take 60 minutes to reach 200°F if
Shutdown Cooling is secured. No primary coolant pumps have been started yet. To
support troubleshooting on CV-3006, SDC HX BYPASS, operations has been
requested to secure shutdown cooling.
Can Shutdown Cooling be secured, and if so, how long can it be secured without
violating Technical Specifications for Shutdown Cooling or PCS Heatup/Cooldown
rates?
A. SDe cannot be secured under these conditions
B. SDC cannot be secured for more than 13 minutes
c. SDe cannot be secured for more than 26 minutes.
D. SDC cannot be secured for more than 60 minutes.

A

B. SDC cannot be secured for more than 13 minutes

44
Q

Given The following plant conditions:
• The plant is in an extended outage.
• The reactor has been shutdown for 45 days.
• Primary Coolant System level is at 628’ 8”.
• PCS temperature = 100°F.
• Current time is 0230.
A request to temporarily secure Shutdown Cooling flow for a valve test has been
approved by the Operations Superintendent.
Assuming Shutdown Cooling flow is terminated at 0230, flow must be restored PRIOR
to:
A. 0250.
B. 0300.
C. 0330.
D. 0240.

A

A’! 0250.

45
Q

Given the following conditions:
• The PCS is being filled from Reduced Inventory.
• It is day 3 of a forced outage to replace a main generator hydrogen leak.
• Current PCS level is 628’ 5”.
• Both SGs have level at approximately 60%.
• Current Average Qualified CET temperature is 120oF.
A request to temporarily secure Shutdown Cooling flow for a valve test has been
approved by the Operations Superintendent. Assuming Shutdown Cooling flow is
terminated at 0320, flow must be restored PRIOR to:
A. 0330.
B. 0340
C. 0400.
D. 0430.

A

B~ 0340.

46
Q

Shutdown Cooling flow is being reduced below 2810 gpm. The crew has ensured all
requirements are met to reduce flow and are preparing to determine the status of the
LPSI Injection Valves per the following table:
TOTAL SHUTDOWN COOLING FLOW
2000 gpm
1500 to 1999 gpm
1000 to 1499 gpm

A

A’! minimizes loop injection check valve cycling.B. ensures adequate backpressure will be maintained to allow FIC-0306 to control flow
in the middle of its band

47
Q

Given the following conditions:
• The PCS is being filled from Reduced Inventory.
• It is day 5 of a forced outage to replace a PCP seal package.
• Current PCS level is 628’ 5”.
• Both SGs have level at approximately 50%.
• Current Average Qualified CET temperature is 140 OF.
• Shutdown Cooling has been lost.
The PCS will reach 200 OF in minutes.
A. 14 to 18
B. 20 to 24
C. 30 to 34
D. 60 to 70

A

B. 20 to 24

Test 3 (4 decks)

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