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Systems Test 4 Flashcards

1
Q
  • LOT 202.44 QDPS*
    • *

What will happen to the SG PORVs if power is lost to APC-1 or APC-2?

A
  • APC-1:*
  • *Data will not be available on DPUs**
  • APC-2:*
  • *Fails closed**
  • When power returns, valve shifts to manual w/ a setpoint of 1225 psig*
  • Can operate SG PORVs locally when APC-2 lost by manipulating 2 valves on actuator assembly.
  • Controlled from upper section of APC-2.
  • Note:*
  • If power to ESF MCC’s are lost, place associated SG PORVs in manual, close the SG PORVs, and dispatch operator to place station blackout power bypass sw. to bypass.
  • This returns control back to MCR.
  • Train “A” MCCs power SG PORV hydraulic pumps A and D.
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2
Q
  • LOT 201.42 SFP Cooling*
    • *

If cooling to the SFP is lost, what must be done?

A

Place 1 FHB HVAC exhaust filter train in service

Take Temp logs on SFP Boron Concentration, Level, and Temperature

Minimizes radioactive release to environment as SFP heats up and radioactive materials come out of the SFP.

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3
Q
  • LOT 201.19 DRPI*
    • *

What powers DRPI?

A
  • Data Cabinets:*
  • *DP003**
  • Control Unit:*
  • *DP003 / DP004**
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4
Q
  • LOT 202.41 Radiation Monitoring*
    • *

What radiation detectors would be important for determining a LOCA IRC?

A
  • *RCB Atmosphere (RT-8011)**
  • Will isolate on CVI*

Containment Purge (RT-8012/8013)

RCB PAMS (RT-8050/8051)

RCB Area (RT-8052 - 8056)

Refueling Bridge (RT-8099)

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5
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What are the requirements to disengage a fuel assembly from the refueling machine?

A

“Gripper Mast Down” Light on

“Slack Cable” Light on

Load cell indicates < 480 lbs

  • *SR Counts are stable**
  • Must call MCR*

Z-Axis tape shows fuel assembly fully inserted

Permission from Core Loading Supervisor

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6
Q
  • LOT 201.19 DRPI*
    • *

What will cause a rod deviation alarm?

A
  • *Control Bank misalignment of ± 12 steps**
  • Any rod and bank*

S/D Banks > 18 steps from full out

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7
Q
  • LOT 202.44 QDPS*
    • *

What will happen to the Rx Head Vents if power is lost to APC-2?

A

Will close if opened

Controlled from upper section of APC-2.

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8
Q
  • LOT 202.02 Main Steam*
    • *

Where does AFW #14 tap off the Main Steam system?

A

SG “D” PORV line

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9
Q
  • LOT 202.44 QDPS*
    • *

What powers the various components in QDPS?

A
  • APC-1s and APC-2s:*
  • *DP1201 - DP1204**
  • DPUs:*
  • *DP001/DP002**
  • Plasma Displays:*
  • *DP001/DP002**
  • Demultipliers:*
  • *DP005**
  • CP002/CP018/ASP*
  • RPU-N:*
  • *DP006**
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10
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What must the boron concentration of the SFP be if fuel is stored in the SFP?

A

≥ 2500 ppm

LCO 3.9.13 SFP Minimum Boron Concentration

Applicability: ≥ 1 fuel assembly stored in the SFP racks.

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11
Q
  • LOT 202.01 S/G*
    • *

What is the normal level and pressure of the SGs?

A
  • SGNR Level:*
  • *70.7%**
  • Full Load Pressure:*
  • *1050 psig**
  • No Load Pressure:*
  • *1185 psig**
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12
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What conditions will make the operator secure a core alteration?

A

Loss of communications with the MCR

Loss of audible count rate in the MCR or RCB

SR NI counts double on both

SR NI Counts ↑ 5x on 1 SR Detector

RHR changes by 10 ˚F or 25 ppm boron

  • *RCS < 2800 ppm boron**
  • Systems that are connected to RCS (Cavity/SFP/RHR)*

Water not clear enough

  • *High SFP Temperature**
  • Plant Curve Book (118 ˚F)*

Load Limits on Refueling Machine/Aux Hoist exceeded

Communications between FHB/RCB control consoles, Refueling Machine, Fuel Handling Machine, and Rx Engineer in MCR required.

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13
Q
  • LOT 201.19 DRPI*
    • *

What will cause a rod bottom alarm?

A

ALL S/D and control banks on bottom

  • *ANY S/D rod OR Control Bank A rod on bottom**
  • Occurs after ALL S/D rods on top and CB “A” 12 steps off bottom*
  • *ANY Control Bank B/C/D rod on bottom**
  • Occurs after respective bank 12 steps off bottom*
  • Note:*
  • Rod Bottom alarm will clear when all S/D rods on top and CB “A” rods 12 steps off bottom.*
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14
Q
  • LOT 202.44 QDPS*
    • *

The upper section of the APC-2 cabinets provide valve control for which valves?

A
  • *SG PORVs**
  • Manual AND Automatic*
  • *AFW throttle valves**
  • Automatic ONLY*
  • *Rx head vent valves**
  • Manual ONLY*

SG PORVs controlled from MCR AND ASP.

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15
Q
  • LOT 202.01 S/G*
    • *

When will the SG Safeties lift?

A

1285 psig ± 3%

1295 psig ± 3%

1305 psig ± 3%

1315 psig ± 3%

1325 psig ± 3%

  • Limits SG pressure to 110% (1413.5 psig) of design pressure (1285 psig) during most severe system transient.
  • Located in IVC 58’

Note:
Relieves to atmosphere (Roof)

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16
Q
  • LOT 202.44 QDPS*
    • *

Where are the QDPS cabinets physically located?

A
  • Train “A”:*
  • *Train “A” Sequencer (EAB 10’)**
  • APC-A1, APC-A2, DPU A*
  • Train “B”:*
  • *Train “B” Sequencer (EAB 10’)**
  • APC-B1, APC-B2*
  • Train “C”:*
  • *Train “C” Sequencer (EAB 10’)**
  • APC-C1, APC-C2, DPU C*
  • Train “D”:*
  • *ASP Room (EAB 10’)**
  • APC-D1, APC-D2*
  • RPU-N:*
  • *Relay Room (EAB 35’)**
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17
Q
  • LOT 201.42 SFP Cooling*
    • *

Where does the suction and discharge lines enter/exit the SFP?

A
  • Suction:*
  • *≈ 23’ above the fuel**
  • Discharge:*
  • *6” below water line (anti-siphon hole)**
  • *Discharges in bottom of pool**

Design ensures we cannot drain pool more than 4’.

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18
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What is the minimum water level of the SFP?

A
  • *23 ft**
  • Above the top of fuel assemblies in racks*

Basis: Iodine removal of the assumed 99% of the iodine gap activity from a ruptured irradiated Fuel Assembly.

Must secure fuel movements at 62 ft (22.25 ft above fuel racks).

  • Note:*
  • Top of fuel racks is 39.75’. Fuel sits ≈ 12” farther down.*
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19
Q
  • LOT 202.41 Radiation Monitoring*
    • *

What are the safety related monitors on RM-23?

A

CR/EAB HVAC (RT-8033/8034)

SGBD (RT-8022 - 8025)

MSL (RT-8046 - 8049)

Unit Vent (RT-8010A/B)

Containment Atmosphere (RT-8011)

Containment Purge (RT-8012/8013)

High Range Containment Atmosphere (RT-8050/8051)

LWPS Discharge (RT-8038)

FHB HVAC (RT-8035/RT-8036) are on RM-23 but are no longer safety related.

  • Note:*
  • “A” Detectors powered from DP001 and “C” Detectors powered from DP002.*
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20
Q
  • LOT 202.03 Main Turbine*
    • *

How are the throttle and governor valves controlled during a turbine startup?

A
  • 0 RPM - 1700 RPM:*
  • *Governor Valves full open**
  • *Throttle valves control speed**
  • 1700 RPM - 1800 RPM:*
  • *Throttle valves full open**
  • *Governor valves control speed**

Governor valves open in a 2, 3, 1, 4 pattern to minimize stress on the HP turbine 1st stage.

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21
Q
  • LOT 201.11 Containment Spray*
    • *

While in MODES 1 - 4, how much trisodium phosphate must there be in the containment baskets?

A

11,500 lbs - 15,100 lbs

LCO 3.6.2.2 Recirculation Fluid pH Control

Applicability: MODES 1 - 4

  • Note:*
  • 6 Baskets are in containment.*
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22
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What is the storage capacity of the region 1 and region 2 areas of the SFP?

A
  • Region 1:*
  • *288**
  • Spaced farther apart*
  • Region 2:*
  • *1681**

Total: 1969

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23
Q
  • LOT 201.19 DRPI*
    • *

What will cause a DRPI Non-Urgent Alarm?

A

Data A OR Data B failure

Any test switch out of normal

1 or 2 timing and data cards failed/loose **

Rod Deviation Cards disagree**

12VDC P/S Failure**

Generates a RPI Trouble Alarm (CP005).

  • Note:*
  • The general warning light will actuate for any urgent or non-urgent alarm condition, except P/S Failure, Rod Deviation, or Timing and Data card disconnect.*
24
Q
  • LOT 202.03 Main Turbine*
    • *

What will auto open the exhaust hood spray valves?

A

Crossover Steam Pressure < 15%
AND
Turbine Speed > 600 RPM

  • Maintains spray pressure 116 psig (40 gpm)
  • Alarm set at 175 ˚F

Note:
Controlled on CP007

25
Q
  • LOT 201.42 SFP Cooling*
    • *

What is the purpose of the SFP cleanup system?

A

Maintains purity and clarity

Maintains dose rate < 2.5 mr/hr on SFP Surface

26
Q
  • LOT 202.44 QDPS*
    • *

What will happen to the AFW control valves if power is lost to APC-1 or APC-2?

A
  • APC-1:*
  • *DPU Data is lost**
  • APC-2:*
  • *Flow Control Valves fail As-Is**
  • *Flow indicators will read 0 gpm**
  • On CP006 and QDPS*
  • Can still be controlled in manual if APC-2 lost.
  • Controlled from upper section of APC-2.
27
Q
  • LOT 201.42 SFP Cooling*
    • *

What will auto close the RWST purification pump’s suction valves?

A

SI

Will not trip the pumps

Valves will fail close on loss of IA or DC control power.

  • Note:*
  • Controlled on CP001*
28
Q
  • LOT 202.01 S/G*
    • *

When will the SG PORVs lift?

A

1225 psig (± 7 psig)

  • Used to Cooldown plant when condenser not available
  • All four PORVs together have capacity of 25% (6.25% each)
  • Located in IVC 58’

Note:
Relieves to atmosphere (Roof)

29
Q
  • LOT 202.41 Radiation Monitoring*
    • *

Which process and effluent monitors have control functions?

A
  • Processing:*
  • *LWPS (RT-8038)**
  • Recircs back to WMTs (FV-4077)*
  • *BRS (RT-8037)**
  • Sends to feed demins*
  • *GWPS (RT-8032)**
  • Isolates Discharge (Closes Discharge, inlet, BRS Vent, and secures bellows compressor)*
  • Secondary Plant:*
  • *TGB Sump (RT-8041)**
  • Stops Sump Pump*
  • *CPS (RT-8042)**
  • Isolates Neut Basin (Closes discharge Valve)*
  • *SGBD (RT-8043)**
  • Isolates Neut Basin (Closes discharge Valve)*
  • HVAC:*
  • *Containment Purge (RT-8012/RT-8013)**
  • CVI [1/2]*
  • *CR/EAB HVAC (RT-8033/RT-8034)**
  • Emergency Mode*
  • *FHB HVAC (RT-8035/RT-8036)**
  • Filtered Exhaust*
30
Q
  • LOT 201.19 DRPI*
    • *

What will cause a DRPI Urgent Alarm?

A

Data A AND Data B failure

Detector Failure

Control Unit Failure

Generates a RPI Trouble Alarm (CP005) and General Warning.

31
Q
  • LOT 202.41 Radiation Monitoring*
    • *

What does the different colors on RM-11 mean?

A
  • White:*
  • *Offline**
  • (Placed by User)*
  • Magenta:*
  • *No Communication**
  • (Bypassed/Power Failure)*
  • Blue:*
  • *Equipment Failure**
  • *Loss of Sample Flow**
  • Red:*
  • *Alarm**
  • Yellow:*
  • *Alert**
  • Cyan:*
  • *Equipment Pre-Failure**
  • Grey:*
  • *Function being executed**
  • Green:*
  • *Normal**

Order of priority (White, Magenta, Blue, Red, Yellow, Cyan, Grey, Green)

32
Q
  • LOT 201.16 Excore NIs*
    • *

How would power behave if the Intermediate range was undercompensated or overcompensated?

A
  • Undercompensated:*
  • *Higher than actual reading**
  • Overcompensated:*
  • *Lower than actual reading**
  • If detectors are undercompensated, source range may not energize.
  • Slightly undercompensated is preferred.
  • Note:*
  • If compensated correctly, source range will energize ≈ 15 mins after Rx shutdown.*
33
Q
  • LOT 201.19 DRPI*
    • *

What is the accuracy of DRPI with no failed channels?

A

± 4 Steps

34
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What is the definition of core alterations?

A
  • Movement of:*
  • *Fuel**
  • *Sources**
  • *Reactivity Control Components**
  • Excludes RCCAs attached to integrated head*
  • Applicable:*
  • *Head Removed**
  • *Fuel in Core**
35
Q
  • LOT 202.44 QDPS*
    • *

What is used to calculate the QDPS RCS Subcooling value?

A

RCS Saturation Temp - Max Quad Thermocouple Avg

DPU does RCS Subcooling and RVWL.

  • Note:*
  • Uses average of the 3 RCS wide range pressures to calculate RCS Saturation temp.*
36
Q
  • LOT 201.11 Containment Spray*
    • *

What does the Trisodium Phospate baskets maintain the pH of the ECCS water at during a DBA?

A

7.0 - 9.5

  • 7.0 Basis: Retention of Iodine in sumps
  • 9.5 Basis: Chloride stress corrosion cracking of stainless steel
  • Note:*
  • Initial pH of ECCS is as low as 4.5.*
37
Q
  • LOT 202.01 S/G*
    • *

What is the purpose of the outlet flow restrictor?

A
  • *Restricts blowdown of S/G during SLB****
  • Safety Function*
  • *Develops steam flow signal**
  • Normal Operations*
  • Limit primary cooldown rate
  • Limit stress on the S/G internals
38
Q
  • LOT 202.03 Main Turbine*
    • *

What will trip the turbine?

A

Electrical Overspeed (110%)

Mechanical Overspeed (111%)

Condenser Vacuum - Low (21.0”)

Thrust Bearing Wear (±40 mils)

P-14 (SGWL 87.5%)

P-16 (Rx Trip)

SI

Bearing Oil Pressure - Low (6 psig ± 1) [1/2 on 2/2]

Stator Cooling Water D/P - Low (19 psid) [2/3] [40 sec TC]

AMSAC

Generator Trip

Manual (Local/MCR)

39
Q
  • LOT 201.16 Excore NIs*
    • *

When removing the control power fuses and instrument power fuses, which should be removed first?

A

Instrument Power Fuses then Control Power Fuses

If control power removed first, then Rx trip or Rod control stop could occur.

40
Q
  • LOT 201.11 Containment Spray*
    • *

What will auto start/trip the Containment Spray pumps?

A
  • Auto Start:*
  • *SI** WITH Containment Pressure - High 3 (9.5 psig) [2/4]
  • *SI** WITH Manual [2/2]
  • CP002/CP005*
  • Trip:*
  • *Overcurrent**

CS Spray Actuation: Opens discharge valve

Pump Start: Starts ECCS cubicle vent fan

Note:
Cubicle fan will also start on room high temperature. (96 ˚F)

41
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

When is a spent fuel assembly transferred from region 1 to region 2 in the SFP?

A

All spent fuel initially sent to Region 1

  • *Begin moving 50% of fuel to region 2 after 20-30 days**
  • B5B Security*
  • *Must be completed moving fuel within 60 days**
  • B5B Security*
  • *Rest moved at ≈ 1 year**
  • Before next outage*
42
Q
  • LOT 202.44 QDPS*
    • *

What are the APC-1s passive outputs?

A
  • Train A:*
  • *PZR Level**

RHR Pump “A” Discharge Pressure / Flow

Low Head “A” to Cold Leg “A” Temp

Charging Discharge Flow

  • Train B:*
  • *PZR Level**

RHR Pump “B” Discharge Pressure / Flow

Low Head “B” to Cold Leg “B” Temp

Loop A/B/C/D Wide Range Cold Leg Temps

  • Train C:*
  • *PZR Level**

RHR Pump “C” Discharge Pressure / Flow

Low Head “C” to Cold Leg “C” Temp

RCPs A/B/C/D Seal Injection Flow

  • Train D:*
  • *PZR Level**

Loop A/B/C/D Wide Range Hot Leg Temps

  • Note:*
  • Since these are passive signals, on a loss of power to respective APC-1, these signals will fail erratically.*
43
Q
  • LOT 201.16 Excore NIs*
    • *

Where are the NIs physically located on the core?

A
  • *PR (NI-44) [45˚]**
  • 2 Detectors (Top and Bottom)*
  • *Extended Range [90˚]**
  • Center of core*
  • *PR (NI-41) [135˚]**
  • 2 Detectors (Top and Bottom)*
  • *SR (NI-31) / IR (NI-35) [180˚]**
  • SR on bottom / IR at midplane*
  • *PR (NI-43) [225˚]**
  • 2 Detectors (Top and Bottom)*
  • *Extended Range [270˚]**
  • Center of core*
  • *PR (NI-42) [315˚]**
  • 2 Detectors (Top and Bottom)*
  • *SR (NI-32) / IR (NI-36) [0˚]**
  • SR on bottom / IR at midplane*

Start at 45˚ and say PEPSI x2.

44
Q
  • LOT 202.44 QDPS*
    • *

How does the AFW control valves respond during a AFW actuation?

A
  • APC-2:*
  • *Flow Controlled between 550 gpm - 640 gpm**
  • Does not look at SGWL just AFW flow*
  • Manual:*
  • *Operator can manually jog valve as long as APC-2 not actively adjusting flow.**

APC-2 will return flow to band once sw. released.

If switched held by operator until full open reached, APC-2 will retake control and return flow to band.

  • Note:*
  • Resetting AFW isolation allows operator to go < 550 gpm but APC-2 will return flow to ≤ 605 gpm (640 gpm - 35 gpm B/D) once operator releases sw. or full open reached.*
45
Q
  • LOT 202.44 QDPS*
    • *

How does the lower section of the APC-2 cabinets provide a compensated SGNR level signal?

A
  • *Each APC-2 cabinet (4) provides a D/P level transmitter and 2 strap-on RTDs per SG**
  • Highest RTD used for compensaton*

SGNR Level sent to 7300 cabinets and DPUs

  • If 1 RTD outside band (50 ˚F - 420 ˚F), other RTD used
  • If both outside band, uncompensated level sent
    • Results in alarm on CP006
  • Note:*
  • A loss of a single APC-2 cabinet will result in [1/4 on 4/4] and will not trip the Rx. [2/4 on 1/4]*
46
Q
  • LOT 201.19 DRPI*
    • *

What is the half accuracy of DRPI when channel B fails?

A

+4 / -10 Steps

47
Q
  • LOT 201.19 DRPI*
    • *

What is the half accuracy of DRPI when channel A fails?

A

-4 / + 10 Steps

48
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

When must the fuel handling machine be operated in slow hoist speed?

A

Seating/Removing tool on fuel assembly

Assembly being lowered and within 10” of racks

Assembly being lowered and within 10” of bottom

Hoist Speed:

  • Normal: 20 fpm
  • Slow: 3 fpm (Machine set for 7 fpm but operator must jog to get 3 fpm)

Bridge:

  • Normal: 30 fpm
  • Slow: 10 fpm
49
Q
  • LOT 202.41 Radiation Monitoring*
    • *

What systems have in-line liquid radiation monitors?

A
  • *BRS (RT-8037)**
  • Evaporator Condensate*
  • *LWPS (RT-8038/8045)**
  • Discharge / Process Liquid*
  • *CVCS (RT-8039)**
  • Failed Fuel Monitor*

CCW (RT-8040)

TGB Drains (RT-8041)

Condensate Polishing (RT-8042)

SGBD (RT-8043)

50
Q
  • LOT 202.01 S/G*
    • *

What is the minimum Rx power that the SGs can be fed through the main feed nozzle?

A

4%

Prevents thermal stratification at low feedwater flows

Note:
Cannot use main feed when RCS temperature < 340 ˚F.

51
Q
  • LOT 202.02 Main Steam*
    • *

A loss of power to what components will cause the SG PORVs to close?

A

Hydraulic Pump:
ESF MCCs
Train A: SG “A” and SG “D” / Train B: SG “B” / Train C: SG “C”
Can be bypassed using station blackout switches
Once bypassed, can operate PORVs with accumulator pressure (1.5 strokes)

  • Servo Motors:*
  • *PORV “A”: DP1201**

PORV “B”: DP1203

PORV “C”: DP1204

PORV “D”: DP1202

52
Q
  • LOT 203.14 GWPS*
    • *

What will auto shutdown the GWPS?

A

Boron Recycle Holdup Vent Pressure - Low

Bellows Compressor Leak

Inlet Pressure - High

System Flow - High

  • *Room H2 - High (4)**
  • 87.5% of lower flammability limit*
  • *O2 - High**
  • 20% of scale (1%)*
  • *Outlet Radiation - High (RT-8032)**
  • Adjacent-to-line gamma scintillation detector*

Closes system inlet (FV-4657), outlet (FV-4671), Boron recycle tank vent (FV-4651), and secures bellows compressor.

  • Note:*
  • Two radiation detectors in system (RT-8031/8032). Only RT-8032 will shutdown system.*
53
Q
  • LOT 201.43,44,45 Refueling Operations*
    • *

What are the refueling machine hoist’s automatic slow zones?

A
  • Top of the Core:*
  • *20” Above - 10” Below**
  • Can be bypassed with open water permissive*
  • Bottom of the Core:*
  • *20” Above**
  • Top of Upender:*
  • *10” Above - 10” Below**
  • Bottom of Upender:*
  • *12” Above**

Slow Zones occur entering or exiting core.

54
Q
  • LOT 201.16 Excore NIs*
    • *

What powers the excore NIs?

A
  • Source Range:*
  • *DP1201/DP1202**
  • Intermediate Range:*
  • *DP1201/DP1202**
  • Power Range:*
  • *DP1201 - DP1204**
  • Extended Range:*
  • *DP001/DP002**
  • Loss of power, NIs fail High.
  • If still in SR or IR, Rx will trip if DP-1201/1202 are lost.
55
Q
  • LOT 202.02 Main Steam*
    • *

What are the design operating parameters of the Main steam system?

A
  • Pressure:*
  • *1285 psig**
  • 1185 psig - 1050 psig (0% - 100%)*
  • Temperature:*
  • *600 ˚F**
  • Saturated System (Dependent on pressure)*
  • Flow:*
  • *17,431,819 lbm/hr**

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