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Systems Test 3 Flashcards

1
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

At what pressure will the PORV (PCV-655A) lift when COMS is armed?

A
  • 70 - 200 ˚F:*
  • *515 psig**
  • 220 - 380 ˚F:*
  • *730 psig**

Uses Auct Low WR TH / PT-403

  • Note:*
  • Normal PORV setpoint is ≈ 2335 psig. (Master pressure controller 87.5%)*
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2
Q
  • LOT 202.36 Essential Chilled Water*
    • *

When will the running and standby essential chillers start on a LOOP / SI? (ESF DG Sequencer)

A
  • Standby:*
  • *35 sec**
  • (Chilled Water Pump / Chiller Oil Pump)*
  • *65 sec (30 sec prelube cycle)**
  • Essential Chiller*
  • Running:*
  • *240 sec**
  • (Chilled Water Pump / Chiller Oil Pump)*
  • *270 sec (30 sec prelube cycle)**
  • Essential Chiller*

Running essential chiller must complete 135 sec post lube cycle before it can be restarted on ESF DG sequencer.

Note:
ESF sequencer bypasses the 30 min anti-recycle timer permissive

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3
Q
  • LOT 201.27 Containment Combustible Gas*
    • *

What are the sources of H2 during a LOCA?

A
  • Major Source:*
  • *Radiolytic decomposition of water ****

Other Sources:
Zirc water reaction **
H2 from the RCS
Max is 1190 scf
Corrosion of metals and paint in containment
Zinc-based paints & galvanized steel
Aluminum
Less of a source than zinc

  • Note:*
  • Radiolytic decomposition of water and Zirc water reaction are variable and will increase with fuel damage*
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4
Q
  • LOT 201.18 Rod Control*
    • *

What does the Rod Control Startup Switch reset?

A
  • POSSUM:*
  • *P/A Converter**
  • *Bank Overlap Unit**
  • *Step Counters**
  • *Slave Cyclers**
  • *Urgent Failures**
  • *Master Cycler**

Located on CP005.

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5
Q
  • LOT 201.18 Rod Control*
    • *

How is the Terror signal generated in the Rx Control Unit?

A
  • Terror = (Tref - Tave) + (Turb Load - NI power)*
  • *Tref → Turbine Impulse Pressure (PT-505)**
  • *Tave → Auctioneered High Tave (T-412A/422A/432A/442A)**
  • *Turb Load → Turbine Impulse Pressure (PT-505)**
  • *NI Power → Auctioneered High PR NIs (NI-41/42/43/44)**
  • Turbine Load - NI Power Portion:*
  • *Used for fast response during transients / load stability**
  • *Passes through Rate comparator**
  • Rate of change produces error output*
  • Steady state results in no output*

Note:
Terror meter on CP005

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6
Q
  • LOT 201.13 ECW*
    • *

What will auto start/stop the ECW pumps?

A
  • Auto Start:*
  • *ESF DG Sequencer (25 Sec)**
  • MODES I, II, III*
  • *CCW Header Pressure - Low (76 psig) [15 sec TD]**
  • *ECW Header Pressure - Low (30 psig) [2/3] [15 sec TD]**
  • Low Pressure on other two trains*
  • Auto Stop:*
  • *Discharge Valve not 95% open after 25 sec**
  • N/A for SI*
  • Note:*
  • 15 Sec TD is to prevent inadvertant train S/U during transient conditions.
  • Discharge valve must be open after 25 sec b/c ECW pump does not have a recirc line to protect the pump
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7
Q
  • LOT 202.36 Essential Chilled Water*
    • *

What ECW pond temperature would make the Essential Chilled Water system inoperable?

A

< 41 ˚F

Per POP02, declare inoperable in MODES 1 - 4.

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8
Q
  • LOT 201.18 Rod Control*
    • *

What provides an accurate indication of control rod bank step count positions by counting the up down pulses from the Rx Control Unit?

A

Pulse to Analog Converter

Located in back of DC hold cabinet.

  • Note:*
  • During Rx S/U, resets when operators reset the S/U Switch.
  • During Dropped rod, have to use manual mode to reset bank to height of dropped rod
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9
Q
  • LOT 201.12 CCW*
    • *

What are the important levels in the CCW Surge Tank?

A
  • 83.3%:*
  • *High Alarm**
  • 74%:*
  • *Makeup Valve Closes**
  • 68.75%:*
  • *Makeup Valve Opens**
  • 66.7%:*
  • *Low Alarm**
  • 64.6%:*
  • *1st Low Level Isolation**
  • 61.5%:*
  • *2nd Low Level Isolation**
  • 56%:*
  • *Baffles Begin**
  • 49%:*
  • *Compartment Level - Low Alarm**
  • 8.3%:*
  • *Compartment Level - Low 2 Alarm**
  • Demin water normally fills CCW Surge Tank. (Auto)
  • RMWST can fill the CCW Surge Tank. (Manual)
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10
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What is the basis for the size of the PZR?

A
  • Enough Water:*
  • *Keep Heaters covered during step load increase of 10%**
  • Enough Steam:*
  • *Accomodate 50% load reduction w/o reaching PZR LVL - High (92%)**
  • w/ Rods and Steam Dumps*
  • *After PZR LVL - High (92%) Rx trip, will not lift safety valves**
  • After Rx Trip AND Turbine Trip:*
  • *No SI**
  • *PZR will not empty**
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11
Q
  • LOT 201.07 Rx Makeup System*
    • *

What will make the makeup stop valves (FCV-0110B/FCV-0111B) auto close?

A
  • Total Makeup Flow Deviation:*
  • *± 15 gpm [15 sec TC]**
  • BA Flow to Blender Deviation:*
  • *± 2 gpm [15 sec TC]**
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12
Q
  • LOT 201.09 RHR*
    • *

What happens in the RHR system during a SI?

A

RHR HX Bypass Closes

RHR HX TCV Valve Full Open

RHR Pumps Trip

  • *CCW from RHR HX opens**
  • CCW pump mini-flow concerns*
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13
Q
  • LOT 201.12 CCW*
    • *

What will cause the thermal barrier isolation valve to shut?

A

CCW Flow - High (60 gpm)

CCW Temp - High (187 ˚F)

Protects CCW piping from thermal barrier HX leak.

Switches located on CP004.

Two in-line backpressure sensing valves provide backup

  • Start to close at 120 psig
  • Full close at 150 psig
  • Note:*
  • Backpressure sensing valves auto-reset when pressure drops below setpoint*
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14
Q
  • LOT 201.10 ECCS*
    • *

What is the system lineup during hot leg recirc?

A

2 ECCS trains injecting into Hot Legs

1 ECCS train injecting into Cold Leg

LHSI and HHSI mini-flow valves closed

Taking Suction from Emergency Sumps

HHSI and LHSI are operated together. Never align HHSI to Hot leg and LHSI to Cold leg or vice versa.

  • Note:*
  • Cold Leg Recirc is the exact same except all 3 ECCS trains injecting into cold legs.*
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15
Q
  • LOT 202.38 FHB HVAC*
    • *

What cools the components in the FHB HVAC System?

A
  • MAB Chill Water:*
  • *FHB HVAC Supply**
  • *Temporary FHB Supplemental Cooling AHU**
  • Only used to reduce heat during cask loading*
  • Essential Chill Water:*
  • *ECCS Pump Room**
  • *Recirc Valve Room**
  • *SF Pump Room**
  • TSC Chill Water:*
  • *PASS Station**
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16
Q
  • LOT 201.09 RHR*
    • *

Which RHR trains are used to transfer refueling water from the refueling cavity to the RWST at the end of a refueling operation?

A

RHR Train “B”

RHR Train “C”

Flow is controlled by throttling the respective train IRC or ORC isolation valve to the RWST

Note:
Do not use train that is selected for shutdown cooling.

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17
Q
  • LOT 201.10 ECCS*
    • *

What are the four phases of a DBA LOCA?

A
  • *Blowdown**
  • Begins with LOCA and ends with RCS pressure = CTMT pressure*
  • *Refill**
  • Water at bottom of the reactor vessel and reaches the bottom of the fuel rods via addition of ECCS (Accumulators and SI pumps).*
  • *Reflood**
  • Rx vessel filled with water*
  • Core temperature rise has terminated*
  • Core temperatures have been reduced to their long term steady state level.*
  • *Long Term Recirculation**
  • Cold Leg Recirc (1st Phase)*
  • Hot Leg Recirc (2nd Phase)*
  • Hot Leg Recirc starts 5.5 hrs (Operator Action) after start of LOCA and cools upper head and prevents boron precipitation.*
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18
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

How many PZR heaters are there and what is the KW rating / heater?

A

117 Heaters

  • *17.95 KW / Heater**
  • 2101 KW Total*

LCO 3.4.3 PZR

Applicable MODES 1-3

  • Requires 2 groups (A/B) w/ 175 KW each
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19
Q
  • LOT 201.09 RHR*
    • *

What trips the RHR pumps?

A

SI

RHR Flow - Low (925 gpm [5 sec TC])

CP001 Indications:

  • Amps
  • Flow
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20
Q
  • LOT 201.10 ECCS*
    • *

What are the Emergency Core Cooling System (ECCS) acceptance criteria?

A

Coolable Geometry

Long-Term cooling

Cladding Oxidation
≤ 17% the total cladding thickness before oxidation.

  • *Peak Cladding Temperature**
  • ≤ 2200 ˚F*
  • *H2 Generation**
  • ≤ 1% the total amount of H2 produced from all metal surrounding the fuel reacting*
  • (excludes metal around plenum volume)*

DBAs:

  • LOCA
  • SLB
  • Fuel Handling Accident
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21
Q
  • LOT 201.07 Rx Makeup System*
    • *

What will auto close the RMW non-essential service isolation valves? (FV-7663/FV-7659)

A
  • *SI**
  • SI Train “B” (FV-7663)*
  • SI Train “C” (FV-7659)*

RMWST Level (54%)

RMWST Level (54%) will also isolate the RMWST sample line (FV-7664). (SI will not)

  • Note:*
  • Makeup to CCW surge tank and SFP will NOT be secured.*
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22
Q
  • LOT 201.13 ECW*
    • *

What is the minimum level and max temperature of the ECW pond as required by LCO 3.7.5 Ultimate Heat Sink?

A
  • Level:*
  • *≥ 25.5 ft**
  • Max Level 26 ft (FSAR)*
  • Temperature:*
  • *≤ 99 ˚F**

Pond sized to have a 30 day cooling water supply to safely shutdown and cooldown both Units while maintaining a heat sink for heat removal

  • Note:*
  • ECW Bay LVL indication and alarms located on CP002
  • ECW Bay LVL - Low 2 (14.96 ft) for LCO 3.7.5 entry.
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23
Q
  • LOT 202.37 EAB/CR HVAC*
    • *

During a DBA, what must control room personnel dose be limited to IAW 10CFR50?

A

≤ 5 Rem Whole Body

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24
Q
  • LOT 201.10 ECCS*
    • *

What valves in the ECCS have a power lockout feature?

A
  • *HHSI/LHSI Hot leg injection valves (MOV-008/MOV-019)**
  • 100% Power: Closed w/ power locked out*
  • CP-001*
  • *Accumulator outlet valves (MOV-039)**
  • 100% Power: Open w/ power locked out*
  • CP-001 / ASP*

No accumulator pressure / level indicators exist on ASP!!

  • Note:*
  • 2 transfer switches for accumulator outlet valves. 1 transfers control and VPI and the other transfers power lockout feature.*
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25
Q
  • LOT 201.12 CCW*
    • *

What will happen in the CCW system during a SI?

A
  • *All 3 CCW pumps start**
  • 20 Sec on ESF DG Sequencer*
  • Will start even if switches on CP001/CP002 are in off*
  • *Opens CCW HX outlet and closes bypass valves**
  • Full flow through HX*

Isolates non-ESF loads

  • *Aligns CCW to RCFCs**
  • Secures RCB Chill Water*
  • *Opens RHR HX outlet valves**
  • CCW Min Flow requirements*
  • Note:*
  • Must re-align cooling to SFP HXs in 2.5 hrs.*
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26
Q
  • LOT 201.08 BTRS*
    • *

What is the limiting temperature and component for the BTRS?

A

130 ˚F

RCP Seals

Limit temperature to 115 ˚F to allow CCPs to add 15 ˚F.

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27
Q
  • LOT 201.12 CCW*
    • *

What will happen in the CCW system when the CCW Surge tank reaches 61.5%? (2nd Low Level Isolation)

A
  • *Isolates CCW Header**
  • Isolates RCP Upper/Lower Bearing Coolers, Thermal Barrier, RCP Motor Air Coolers, SFP HX, PASS Coolers*

CCW Train “B” → CCP “B” and Seal Water HX

CCW Train “C” → CCP “A” and PDP

  • *Opens RHR Outlet Valves for running CCW Pumps ONLY**
  • Min flow requirements*
  • Note:*
  • As soon as CCW common header isolated, standby CCW pump will start on CCW Header Pressure - Low (76 psig)*
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28
Q
  • LOT 201.10 ECCS*
    • *

What will cause an SI auto recirculation signal?

A

SI Signal

AND

  • *RWST Level - Low 2 (≤ 75,000 gal) [1/1]**
  • Each lvl switch provides signal for it’s train only*

Closes HHSI AND LHSI pump mini-flow valves.

When ≥ 1 valve for each pump closed:

  • Opens containment sump → SI suction header Isolation valve.

RWST → SI suction header isolation valve must be manually closed by operator. (CP001)

  • Note:*
  • Reset and RWST lvl indication are located on CP001*
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29
Q
  • LOT 201.13 ECW*
    • *

What will happen in the ECW system once a ECW pump is started?

A

Starts self cleaning strainer motor

  • *Starts to Open Discharge Valve after 10 sec**
  • If not open after 25 sec, pump trips (N/A for SI)*

Opens chemical injection valve for associated bay

  • *Opens Blowdown Valves (N/A for train 2A)**
  • Maintain CP002 switches in CLOSE so doesn’t really happen*
  • *Starts ventilation fans**
  • Must be manually secured*
  • Discharge Valve MCC switch in local prevents discharge valve opening when ECW pump starts.
  • Self Cleaning strainer does not have switch in MCR.
  • Note:*
  • Discharge valve will shut 2 mins after ECW pump secures to prevent draining ECW piping to ECW pond and thus preventing water hammer on pump S/U.*
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30
Q
  • LOT 201.13 ECW*
    • *

What will cause a CCW standby train not selected alarm on CP002?

A

2 ECW/CCW train selector switches in “OFF”

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31
Q
  • LOT 201.18 Rod Control*
    • *

What causes a rod control power cabinet urgent failure?

A
  • *Logic Error**
  • 0 Current sent to stationary and movable grippers at same time*
  • *Regulation Error**
  • Current doesn’t match order or Full current for too long*
  • *Phase Failure**
  • Excessive voltage ripple*
  • *Multiplex Error**
  • Wrong rod getting current*
  • *Rod Holdout switches out of position**
  • *Loose Circuit Card**
  • Stops Auto/Manual rod motion
  • Individual Bank rod motion will still work
  • Sends reduced current signal to affected group movable/stationary grippers
  • Note:*
  • Non-Urgent is a loss of 1 of the 4 power supplies and will not affect system operation.*
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32
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What Tavg is used to calculate PZR program level?

A

Auctioneered High Tavg

Compares selected controlling channel level (LT-465 or LT-467) to program level to determine demand to FCV-0205.

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33
Q
  • LOT 202.38 FHB HVAC*
    • *

How many FHB HVAC exhaust trains must be OPERABLE during movement of irradiated fuel?

A
  • *One Train**
  • *OR**
  • *One Train Capable of being OPERABLE in 2 hrs**

TRM 3.9.12 FHB Exhaust Air System

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34
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What is the effect of indicated PZR level for the following conditions?

  • Reference Leg Break
  • Diaphragm Failure
  • Reference Leg Heating
A
  • Reference Leg Break:*
  • *Less Mass → D/P ↓ → Lind↑**
  • Diaphragm Failure:*
  • *D/P ↓ → Lind↑**
  • Reference Leg Heating:*
  • *Less Mass → D/P ↓ → Lind↑**
  • w/o compensation*
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35
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What are the important PZR Master pressure controller setpoints?

A
  • PCV-655A:*
  • *87.5%: Opens**
  • *75%: Closes**
  • Spray Valves:*
  • *72%: Full Open**
  • *40.5%: Start to Open**
  • Control Heaters:*
  • *34.5%: Zero Power**
  • 22%: NOP*
  • *15.5%: Full Power**
  • B/U Heaters:*
  • *14.5%: Turn Off**
  • *9.5%: Turn On**
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36
Q
  • LOT 202.38 FHB HVAC*
    • *

What will cause a FHB HVAC Emergency Operating Actuation Signal?

A

SI

  • *High Radiation (5x10-4 µCi/cc)**
  • RT-8035 OR RT-8036*

High Radiation Signal will drop out after 100 sec (Regardless if High Rad clear) to allow reset on CP-022.

37
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

While operating in MODE 1, what is your PZR Pressure DNB limit?

A

2200 psig

LCO 3.2.5 DNB Parameters

Applicable: MODE 1

38
Q
  • LOT 201.10 ECCS*
    • *

In order for the RWST to be OPERABLE in MODES 1 - 4, what must water volume and boron concentration be?

A

≥ 458,000 gallons

2800 ppm - 3000 ppm

LCO 3.5.5 RWST

Applicable: MODES 1 - 4

39
Q
  • LOT 201.09 RHR*
    • *

When is RHR placed in service?

A

≤ 350 ˚F

  • *≤ 332 psig**
  • Interlock to open MOV-060/MOV-061*

No auto close features for MOV-060/MOV-061.

40
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

At what PZR level will the heaters trip off?

A
  • *17% [1/2]**
  • LT-465/467 OR LT-466/467*

Backup heaters will turn back on if in auto once PZR LVL > 17%. [2/2]

  • Note:*
  • For LOOP / SI, B/U heaters control switch must be cycled to turn back on.*
41
Q
  • LOT 201.10 ECCS*
    • *

At what RCS pressures will the ECCS Accumulators, HHSI pumps, and LHSI pumps inject into the RCS Cold Legs?

A
  • HHSI:*
  • *< 1600 psig**
  • Accumulators:*
  • *590 - 670 psig**
  • LHSI:*
  • *< 300 psig**

Receive water from RWST.

  • Note:*
  • During DBA, Accumulators will inject 1st.*
42
Q
  • LOT 201.07 Rx Makeup System*
    • *

What powers the RMW pumps, BAT pumps, and CCPs?

A
  • RMW Pump A:*
  • *MCC E1C2**
  • RMW Pump B:*
  • *MCC E1B4**
  • BAT Pump A:*
  • *MCC E1C4**
  • BAT Pump B:*
  • *MCC E1A4**
  • CCP A:*
  • *E1C**
  • CCP B:*
  • *E1A**

C-B-C-A-C-A (2444)

43
Q
  • LOT 201.18 Rod Control*
    • *

What is the purpose of using bank overlap?

A

Gives more uniform reactivity rate

  • Used for the control banks ONLY.
  • S/D banks not overlapped b/c they will not be used while critical.
  • Note:*
  • The bank selector switch must be in Auto or manual to maintain bank overlaps during rod movement.*
44
Q
  • LOT 201.13 ECW*
    • *

What will auto start/stop the ECW traveling screens?

A
  • Auto Start:*
  • *SI**
  • *High Screen D/P (5.5”) w/ Screen Wash Pressure ≥ 63 psig**
  • Resets at 4.5” (Will run for 4 mins after reset)*
  • Auto Stop:*
  • *Sreen Wash Pressure < 63 psig**
  • N/A for SI*
  • *∆Level < Setpoint**
45
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What is the PZR Program Level for 0% RTP and 100% RTP?

A
  • 0% RTP (567 ˚F):*
  • *25%**
  • 100% RTP (593 ˚F):*
  • *57%**

At actual 100% RTP (592 ˚F) PZR Level will be 55.7%.

46
Q
  • LOT 201.09 RHR*
    • *

Which pressure transmitters provide the open permissive for the RHR Suction Valves? (MOV-060/MOV-061)

A
  • RHR Train “A”:*
  • *MOV-060A: PT-405**
  • *MOV-061A: PT-406**
  • RHR Train “B”:*
  • *MOV-060B: PT-406**
  • *MOV-061B: PT-407**
  • RHR Train “C”:*
  • *MOV-060C: PT-407**
  • *MOV-061C: PT-405**

Power Supplies:

  • PT-405: Train “A”
  • PT-406: Train “B”
  • PT-407: Train “C”
47
Q
  • LOT 201.12 CCW*
    • *

What systems operate at a higher pressure than CCW?

A
  • *RHR HX**
  • *RCP Thermal Barrier**
  • *Letdown HX**
  • *Excess Letdown HX**
  • *RCDT HX**
  • *Primary Sample Coolers**
  • *SFP HX**
48
Q
  • LOT 201.27 Containment Combustible Gas*
    • *

What are the sample points for the H2 monitors?

A

Top of Containment Dome

Above S/Gs (S/G C/D)

Inside S/G Compartment (S/G C/D)

Inside Primary Shield (S/G A/B)

Controlled from CP002

  • Note:*
  • H2 monitor “B” penetrations used by PASS*
49
Q
  • LOT 201.10 ECCS*
    • *

In order for the accumulators to be OPERABLE in MODES 1 - 3 w/ PZR pressure > 1000 psig, what must water volume and boron concentration be?

A
  • Water Volume:*
  • *8800 gal - 9100 gal**
  • Boron Concentration:*
  • *2700 ppm - 3000 ppm**

LCO 3.5.1 Accumulators

Applicable: MODES 1 - 3

50
Q
  • LOT 201.07 Rx Makeup System*
    • *

What are the different ways an operator can inject boron into the RCS?

A
  • BAT:*
  • *Charging Line**
  • Normal / Alt. Immediate: Flow limited by FCV-0110A (0-100 gpm)*
  • Emergency: BAT pump flowrate (125 gpm)*
  • *RCP Seal Injection**
  • 5 gal/min per pump*
  • *Gravity Feed**
  • CV-0333 / CV-0226*
  • RWST:*
  • *Charging Line**
  • MOV-112C / MOV-113B*
  • BTRS:*
  • *Demins**

The emergency boration path through the charging line, the gravity feed path, and the RWST path are all considered “Emergency Boration.”

  • Note:*
  • VCT Level - Low 2 (3%) will close MOV-112B/MOV-113A and prevent normal boration.*
51
Q
  • LOT 201.07 Rx Makeup System*
    • *

What will auto start/ stop the BAT pumps?

A
  • Auto Start:*
  • *VCT Level (28%)**
  • 200 gpm blend flow (RMWST/BAT)*
  • *Manual / Borate Initiated**
  • Manual: 200 gpm blend flow (RMWST/BAT)*
  • Borate: Flowrate (User Defined 0-100 gpm)*
  • Auto Stop:*
  • *VCT Level (48%)**
  • Trip:*
  • *Overload**

Can be controlled from ASP.

  • Note:*
  • Unlike RMW pumps that trip on low level, the BAT pumps have no low level trip.*
52
Q
  • LOT 201.12 CCW*
    • *

What CCW loads isolate when the CCW Surge tank reaches 64.6%? (1st Low Level Isolation)

A
  • HXs:*
  • *Letdown HX**
  • *Excess Letdown HX**
  • *RCDT HX**
  • Evaporators:*
  • *Boron Recycle Evaporator**
  • *LWPS Evaporator**
  • Sample Coolers:*
  • *Boric Acid Sample Cooler**
  • *Primary Sample Coolers**
  • Radiation Monitors:*
  • *S/G Blowdown Rad Monitor**
  • *BRS Rad Monitor**
53
Q
  • LOT 202.37 EAB/CR HVAC*
    • *

What is the required D/P across the CR HVAC Makeup and Cleanup filters?

A
  • Cleanup:*
  • *< 6.0” H2O**
  • Makeup:*
  • *< 6.1” H2O**

Note:
Located on CP022

54
Q
  • LOT 202.37 EAB/CR HVAC*
    • *

What is the CR HVAC system response following an SI or High Rad?

A
  • *Makeup Supply Damper Opens**
  • *Makeup Fan Starts**
  • *Makeup Discharge Damper Modulates to maintain 1000 cfm**
  • FCV-9584/9585/9586*
  • *Cleanup Fan Starts**
  • *Supply Fan Starts​**
  • *Return Fan Starts**
  • *Return Damper Opens**
  • FV-9675/9676/9677*
  • *Kitchen / Toilet exhaust fan Stops**

For an SI:

  • EAB AHUs Start
  • Battery Room Exhaust Fan Starts
  • MAB HVAC Emergency AHU Starts
  • Note:*
  • Can be done manually on CP022*
55
Q
  • LOT 202.37 EAB/CR HVAC*
    • *

How much air flow is present in the following sections of the CR HVAC system?

  • Supply Fan Discharge
  • Recirculation Flow
  • Cleanup Flow
  • Makeup Flow
A
  • Supply Fan Discharge:*
  • *17400 cfm**
  • Recirculation Flow:*
  • *16400 cfm**
  • Cleanup Flow:*
  • *6000 cfm**
  • 1000 cfm (Fan) + 5000 cfm (Recirc Flow)*
  • Makeup Flow:*
  • *1000 cfm**
  • Maintained by discharge damper*
56
Q
  • LOT 201.07 Rx Makeup System*
    • *

What will auto start/stop the RMW pumps?

A

Auto Start:
VCT Level (28%)
200 gpm blend flow (RMWST/BAT)
Manual / Dilute / Alt Dilute Initiated
Manual: 200 gpm blend flow (RMWST/BAT)
Dilute / Alt Dilute: Flowrate (User Defined 0-300 gpm)

  • Trip:*
  • *RMWST Level (5.6%)**

Makeup will secure at VCT Level (48%) but operator must secure RMW pump.

57
Q
  • LOT 201.10 ECCS*
    • *

When must all HHSI pumps be inoperable per tech specs?

A
  • *MODE 5**
  • *MODE 6 w/ Rx Vessel Head on**

LCO 3.5.3.2 ECCS Subsytems - Tavg ≤ 200 ˚F

58
Q
  • LOT 202.38 FHB HVAC*
    • *

What will happen on a FHB HVAC Emergency Operating Actuation Signal?

A
  • Opens:*
  • *Relief Supply Dampers (D-001/D-037)**
  • Relief Damper off closed seat → Main Supply Fans to Trip → D/P Damper (D-138) to Close*
  • *Exhaust Filter Inlet Dampers (D-033/D-034)**
  • *Exhaust Filter Outlet Dampers [Modulates] (D-146/D-147)**
  • Shuts:*
  • *Bypass Line Dampers (D-036/D-162)**
  • Starts:*
  • *ALL (3) Main Exhaust Fans**
  • *ALL (3) Exhaust Booster Fans**
59
Q
  • LOT 201.13 ECW*
    • *

What loads does ECW supply?

A

Essential Chillers​

  • ESF DGs:*
  • *Jacket Water HX**
  • *Turbo Charger Combustion Air Cooler**
  • *Lube Oil HX**
  • CCW:*
  • *CCW HX**
  • *CCW Pump Supplementary Cooler**
  • Cools area cooler and CCW pump motor*
60
Q
  • LOT 201.18 Rod Control*
    • *

What is the RDMG’s output voltage and frequency?

A

260 VAC

59 Hz

Prevents alternate power supply connection

  • Note:*
  • Control switches to operate RDMGs are on local control panel only.*
61
Q
  • LOT 201.18 Rod Control*
    • *

When performing a Rx startup, how many steps until bank overlaps begin?

A

137 steps

  • Control Bank A at 137 steps, Control Bank B will begin to lift.
  • Process repeated for control bank C and control bank D.
62
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

How many RCPs are required for PZR Spray?

A
  • *RCP 1A ONLY**
  • *OR**
  • *RCP 1D ONLY**
  • *OR**
  • *RCPs 1B AND 1C**
63
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

When is COMS required to be armed?

A

≤ 350 ˚F

  • PCV-655A (Auct Low WR TH / PT-403)
  • PCV-656A (Auct Low WR TC / PT-404)

COMS controller completely independent of master pressure controller.

  • Note:*
  • Manually armed on CP004*
64
Q
  • LOT 201.10 ECCS*
    • *

What will auto open the accumulator discharge valve? (MOV-039)

A

SI

  • *RCS Pressure ≥ P-11**
  • PZR Pressure ≥ 1985 psig [2/3]*
65
Q
  • LOT 203.11 LWPS*
    • *

For an unprotected outdoor tank, what is activity limited to? (LCO 3.11.1 Liquid Holdup Tanks)

A
  • *≤ 10 Curies**
  • Excludes Tritium and entrained Noble Gases*

LCO N/A to WMT D/E/F b/c they have a berm.

Used for temporary tanks.

66
Q
  • LOT 201.13 ECW*
    • *

Describe what happens to the ECW blowdown valves when a SI occurs?

A
  • *Blowdown valves shut**
  • Once SI clears, must take valves to shut then back to auto on CP002*

CP002 switch in AUTO:

  • ECW Train 2A: Valve opens
  • ALL other ECW Trains: Cycles Open/Shut with ECW pump starting/securing

Valve physically located on MAB 10’ at ECW Sump. (No local switch)

Note:
By procedure, every blowdown valve with exception of train 2A is maintained in the CLOSE position on CP002

67
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What PZR Level deviation will automatically turn on PZR B/U Heaters?

A
  • *+ 5% Level Deviation**
  • Controlling Channel Level (LT-465/467) > 5% above Program Level*

Done to preheat PZR insurge.

  • Note:*
  • Charging flow at +5% Level Deviation: 50 gpm
  • Charging flow at -5% Level Deviation: 300 gpm
68
Q
  • LOT 201.13 ECW*
    • *

What provides makeup to the ECW pond?

A
  • Normal:*
  • *Well Water**
  • Alternate:*
  • *Unit 2 ECW Sump via ECW 2A return line**
  • Unit 1 Sump is normally aligned to Unit 1 CW Return.
  • Unit 2 Sump can be aligned to Unit 1 CW Return.
  • Note:*
  • ECW Sump located on MAB 10’ in Essential Chiller Train C Room.*
69
Q
  • LOT 201.18 Rod Control*
    • *

What is the rod speed for each control rod during auto and manual control?

A

Control Banks:

  • *Terror 1.5 ˚F - 3 ˚F:**
  • *6 steps/min**
  • *Terror 3 ˚F - 5 ˚F:**
  • *Linear slope (6 - 72 steps/min)**
  • *Terror ≥ 5 ˚F:**
  • *72 steps/min**
  • *Manual:**
  • *68.5 steps/min**
  • S/D Banks:*
  • *68.5 steps/min**
    • Terror results in outward rod movement
    • Terrror results in inward rod movement
  • Note:*
  • Once ± 1.5 Terror reached rods with continue to shim until ± 1 Terror reached.*
70
Q
  • LOT 201.12 CCW*
    • *

What is the temperature band CCW operates in during normal operations?

A
  • *60 ˚F - 105 ˚F**
  • MAX DBA: 122.3 ˚F*

60 ˚F Basis:

  • Prevents condensate in Lube Oil Coolers
  • Prevents thermal shock to RCP thermal barrier
  • Note:*
  • During C/D CCW Temp may reach 120 ˚F for 4 hrs (RHR cooling req.)*
71
Q
  • LOT 201.07 Rx Makeup System*
    • *

What is the usable volume and the boric acid concentration of the BATs?

A
  • Usable Volume:*
  • *33,500 gal/tank**
  • 2 tanks*
  • Boron Concentration:*
  • *7000 - 7700 ppm**

MODES 1 - 6:

  • ≥ 27,000 gal (MODES 1 - 4)
  • ≥ 3,200 gal (MODES 5 - 6)
  • ≥ 7000 ppm
  • ≥ 65 ˚F

CP004:

  • Level and temperature indication
72
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

At what pressure will the PZR PORV auto open signal blocked?

A

2185 psig

  • PCV-655A (PT-458)
  • PCV-656A (PT-457)

Tailpipe temperature for PORVs and Safeties on CP004. (PORV: TI-676 / Safeties: TI-677 - 679)

73
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

What controls the opening of the PORVS? (PCV-655A / PCV-656A)

A
  • PCV-655A:*
  • *Master Pressure Controller**
  • 87.5% (≈ 2335 psig)*
  • PCV-656A:*
  • *Backup PZR Pressure Channel**
  • 2335 psig*
  • Note:*
  • Only odd numbered channels can be selected as the “controlling channel” to input to the master pressure controller. (455/457)
  • Only even numbered channels can be selected for backup control, and they only input to PCV-656A (456/458)
  • Switch on CP004
74
Q
  • LOT 202.38 FHB HVAC*
    • *

What will happen to the FHB HVAC system during a LOOP?

A
  • Open:*
  • *Supply Fan Inlet Dampers (D-002/D-003/D-004)**
  • Shut:*
  • *Exhaust Filter Outlet Dampers (D-146/D-147)**
  • Trip:*
  • *Supply Fans**
  • *Exhaust Booster Fans**
  • Starts:*
  • *All (3) Exhaust Fans**
  • Locks in start signal to re-start fans when power returns*

Supply fans will not start on exhaust fan start b/c power will strip and not return.

Operator must open a relief damper (D-001/D-037)

75
Q
  • LOT 201.18 Rod Control*
    • *

How many control rods are in each bank?

A
  • Control Banks*
  • *A: 8 (4/4)**
  • *B: 8 (4/4)**
  • *C: 8 (4/4)**
  • *D: 5 (2/3)**
  • S/D Banks:*
  • *A: 7 (4/3)**
  • Unit 2: 8 (4/4)*
  • *B: 8 (4/4)**
  • *C: 4**
  • *D: 4**
  • *E: 4**

Rod D-6 in SD Bank A Group 2 was removed for Unit 1

76
Q
  • LOT 201.10 ECCS*
    • *

How do you place ECCS in-service during a plant heatup from cold shutdown?

A
  • Mode 5:*
  • *ALL HHSI pumps inoperable**
  • *SI not blocked**
  • Before Entering MODE 4:*
  • *Open ALL HHSI CL injection valves**
  • *2 trains of LHSI OPERABLE**
  • Within 4 hrs of going > 200 ˚F and before exceeding 225 ˚F:*
  • *1 HHSI OPERABLE and 1 HHSI in Standby**
  • Before Entering MODE 3 (350 ˚F):*
  • *ALL LHSI OPERABLE**
  • Within 4 hrs of going > 350 ˚F and before exceeding 375 ˚F:*
  • *ALL HHSI OPERABLE**
  • 900 psig - 1000 psig:*
  • *ALL Acummulators OPERABLE**
77
Q
  • LOT 201.10 ECCS*
    • *

Which valves will not be able to be manually opened if the respective train’s Emergency Sump Outlet Valve (MOV-016) is open?

A

HHSI Mini-Flow Valves (MOV-011/MOV-012)

LHSI Mini-Flow Valves (MOV-013/MOV-014)

RWST Outlet Valves (MOV-001)

To manually open Emergency Sump Outlet Valve:

  • RWST Outlet Valve closed (Manual Only)
  • HHSI Mini-Flow Valve closed [1/2]
  • LHSI Mini-Flow Valve closed [1/2]
78
Q
  • LOT 201.07 Rx Makeup System*
    • *

How do you calculate the boron blender potentiometer setting?

A

FK-0110 Setpoint

20 x Boron Concentration of RCS/Boric Concentration of BAT

Controller set up for 0-10 setting. Correlates to 0-100 gpm. (5 setting is 50 gpm)

79
Q
  • LOT 201.18 Rod Control*
    • *

What causes a rod control logic cabinet urgent failure?

A
  • *Pulser Failure**
  • *Slave Cycle Input Failure**
  • Slave receive “Go” signal before last step done*
  • *Loose circuit card**
  • Stops Auto/Manual rod motion
  • Individual Bank rod motion will still work
  • Sends reduced current signal to affected group movable/stationary grippers
  • Note:*
  • Non-Urgent is a loss of 1 of the 6 power supplies and will not affect system operation.*
80
Q
  • LOT 201.07 Rx Makeup System*
    • *

What plant conditions require emergency boration?

A

Loss of SDM

Reactivity excursion that normal means cannot handle

CRDM below insertion limits

> 1 Control Rod not inserting on Rx Trip

Loss of DRPI after Rx Trip

ATWAS

QDPS S/D Monitor Alarm

81
Q
  • LOT 202.37 EAB/CR HVAC*
    • *

What is the CR HVAC system response for a LOOP on Train C?

A
  • *Makeup Supply Damper Opens**
  • *Supply Fan Starts**
  • *Return Fan Starts**
  • *Cleanup Fan Starts**
  • *Return Damper Opens**
  • FV-9677*

Kitchen/Toilet Exhaust fan stays running because dampers powered by A/B.

  • Note:*
  • LOOP on A/B looks the same except Kitchen/Toilet fan secures b/c fan inlet dampers shut.*
82
Q
  • LOT 201.13 ECW*
    • *

What will auto start the screen wash booster pump?

A
  • Auto Start:*
  • *SI**
  • *Traveling Screens Start**

Must be manually secured.

MCC switch in LOCAL eliminates ALL Auto Functions.

  • Note:*
  • Starting screen wash booster pump will auto open screen wash valve unless MCR switch in close.*
83
Q
  • LOT 201.09 RHR*
    • *

Where in the CVCS does RHR enter and exit?

A
  • Supply:*
  • *Downstream of Regen HX (IRC)**
  • RHR Train “A” AND Train “B”*
  • Return:*
  • *Upstream of VCT**
  • RHR Train “A” ONLY*

Low Pressure Letdown:

  • All letdown orifices open
  • RHR pump not required to be running
  • PCV-135 able to maintain ≈ 380 psig
84
Q
  • LOT 201.07 Rx Makeup System*
    • *

What will auto close the boric acid purification loop isolation valves? (FV-8400A/B)

A

BAT Tank Level - Low (29,584 gal) [1/1 on 1/2]

Level Recorder located on CP018.

Control switches for FV-8400A/B located on CP004.

  • Note:*
  • This is the only BAT tank level actuation. The BAT pumps will NOT trip on a low level actuation.*
85
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

Which PZR Pressure instrument does not tie into P-11?

A

PT-458

P-11: PZR Pressure ≥ 1985 psig [2/3]

86
Q
  • LOT 201.07 Rx Makeup System*
    • *

What are the Boration thumb rules?

A

DBW = 10 pcm/ppm

10 gals of boron/ppm

87
Q
  • LOT 201.14 PZR Pressure & Level*
    • *

At what pressure will the PORV (PCV-656A) lift when COMS is armed?

A
  • 70 - 200 ˚F:*
  • *475 psig**
  • 220 - 380 ˚F:*
  • *660 psig**

Uses Auct Low WR TC / PT-404

  • Note:*
  • Normal PORV setpoint is 2335 psig. (B/U pressure channel)*
88
Q
  • LOT 201.10 ECCS*
    • *

When does the accumulator relief lift?

A

700 psig

Relieves to Containment Atmosphere

  • HHSI Discharge Relief (1750 psig) → PRT
  • LHSI Discharge Relief (600 psig) → PRT

Review (8 decks)

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