Systems Flashcards
- LOT 201.22 ESF*
- *
What are the ESF support systems?
ECW cooling pond
ECW
CCW
ESF DG’s
- LOT 201.14 PZR Pressure & Level*
- *
What PZR Level deviation will automatically turn on PZR B/U Heaters?
- *+ 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
- LOT 201.33 Non-Class DC*
- *
How long will the Non-Class 1E batteries last on a loss of battery charger power?
2 hrs
Will fully recharge in 12 hrs
- LOT 201.39 ESF DGs*
- *
What pressure in the starting air receivers will make the ESF DGs INOPERABLE?
< 175 psig in BOTH
5 consecutive starts w/o recharge.
- LOT 201.29 Fire Protection*
- *
If the fire protection pump auto starts, what is the only thing that will trip the pump?
Mechanical Overspeed
Applies if pumps start on Low Header Pressure, Loss of power, or remote start from either control room. (CP018)
Note:
Cannot be stopped from control room.
- LOT 201.06 CVCS*
- *
At what pressure will the low pressure letdown relief valve (CV-3201) lift?
300 psig
Relieves to VCT.
- LOT 201.02 RCS*
- *
What is Keff, RTP, and Tavg when the plant is in MODE 3?
Hot Standby:
- Keff:*
- *< 0.99**
- RTP:*
- *0%**
- Tavg:*
- *≥ 350 ˚F**
- LOT 202.22 Circulating Water*
- *
What will trip a CW pump?
- Starting Pump:*
- *Discharge MOV NOT moving after 24 sec**
Discharge MOV NOT ≥ 35% open in 32 sec
- Stopping Last 2 CW Pumps:*
- *Stopping 1 pump trips both**
- Discharge valves remain open*
- LOT 201.05 RCPs*
- *
What is the flowrate and flowpath of the #3 Seal?
- Flowrate:*
- *800 cc/hr → 400 cc/hr (x2)**
- Suction:*
- *Seal Standpipe (RMW)**
- Discharge:*
- *CTMT Normal Sump (400 cc/hr)**
- *RCDT (400 cc/hr)**
- LOT 201.14 PZR Pressure & Level*
- *
At what pressure will the PZR PORV auto open signal blocked?
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)
- LOT 202.22 Circulating Water*
- *
What is the CW pump securing sequence?
- Third and Fourth Pumps:*
- *Once Discharge MOV 80% Open, Pump Stops**
Discharge MOV fully Closes
- First and Second Pumps:*
- *Once 2nd pump’s Discharge MOV 95% Open, BOTH PUMPS TRIP**
Valves Remain As-Is (95% Open / Fully Open)
Must wait 5 mins between securing pumps
Note:
PTL:**Bypasses 5 min TD but Discharge MOVs will still fully close
- LOT 201.22 ESF*
- *
What systems make up the ESF system?
- RCS M/U:*
- *ECCS**
- HHSI, LHSI, SI, Accumulators*
- S/G M/U:*
- *Aux FW**
- Containment:*
- *Containment Isolation**
- *Containment Heat Removal**
- *Containment Combustible Gas Control**
- HVAC:*
- *EAB / CRE HVAC**
- *FHB HVAC**
- LOT 202.10 Condensate*
- *
What will auto open the GSS Condenser bypass valve (PDV-7020)?
GSS Condenser Inlet (MOV-084) closed
GSS Condenser Outlet (MOV-082) closed
Loss of IA / Electrical Power
- *GSS Condenser D/P > 18 psid**
- Resets at 5.5 psid*
- LOT 201.37 Class 1E 125VDC*
- *
How many battery chargers are in-service per channel on the Class 1E 125VDC system?
One Battery Charger
Class 1E battery charger output breakers are administratively controlled to prevent both breakers being closed at the same time. (Allowed for 15 mins for battery charger swapping)
- Note:*
- Non-Class 1E 125VDC has both battery chargers connected.*
- LOT 201.32 Non-Class 480V*
- *
What provides control power to load centers?
125 VDC Control Power
MCCs provide their own control power.
- LOT 201.18 Rod Control*
- *
What is the rod speed for each control rod during auto and manual control?
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.*
- LOT 201.27 Containment Combustible Gas*
- *
What provides power for the H2 recombiners and the H2 monitors?
- H2 Recombiners:*
- *MCCs E1B4/E1C2**
- Not safety related*
- H2 Monitors:*
- *DP001/DP002**
- H2 Monitor Blowers:*
- *MCCs E1A4/E1C4**
- LOT 201.19 DRPI*
- *
What is the half accuracy of DRPI when channel B fails?
+4 / -10 Steps
- LOT 201.06 CVCS*
- *
At what pressure will the letdown relief valve (CV-3100) lift?
600 psig
Relieves to PRT.
- LOT 201.39 ESF DGs*
- *
How does the turning gear interlock prevent the ESF DG from starting?
Blocks starting air if turning gear not fully disengaged
- LOT 201.01 RCB*
- *
Which containment radiation monitor is covered by tech specs to aid the operators in RCS leak detection? (LCO 3.4.6.1 RCS Leak Detection)
RCB Atmosphere Monitor RE-8011A (Particulate)
LCO 3.4.6.1 RCS Leak detection
Applicable in MODES 1 - 4
- Note:*
- RE-8011B (Iodine) and RE-8011C (Noble Gas) are non-safety related.*
- LOT 201.20 SSPS*
- *
What Rx trips are defeated when the master relay defeat switch is in the “defeat/cvi available” or the “defeat all” positions?
SG Level - Low 2 (20%) [2/4 on 1/4]
- *2 Urgent Alarms**
- Alarms will still come in but no Rx Trip*
- ≥ P-11 will trip the Rx (PZR Pressure ≥ 1985 psig) [2/3]
- Prevents S/U with no ESF actuations
- SR HV OFF disabled
- Prevents loss of Source Range while S/D
- Note:*
- Must go through the Rx trip position to reach “defeat/cvi available” or “Defeat all” positions.
- Must pull out switch to operate
- LOT 201.39 ESF DGs*
- *
What will auto start / stop the DC Standby Fuel Oil Pump?
- Auto Start:*
- *< 540 RPM w/ engine start signal**
- Auto Stop:*
- *≥ 540 RPM AND > 25 psig header pressure**
Power Supply: Non-Class 125VDC 1B
- LOT 201.02 RCS*
- *
What is Keff, RTP, and Tavg when the plant is in MODE 4?
Hot Shutdown:
- Keff:*
- *< 0.99**
- RTP:*
- *0%**
- Tavg:*
- *350 ˚F > Tavg > 200 ˚F**
- LOT 201.02 RCS*
- *
What is Keff, RTP, and Tavg when the plant is in MODE 6?
Refueling:
- Keff:*
- *≤ 0.95**
- RTP:*
- *0%**
- Tavg:*
- *≤ 140 ˚F**
Fuel in the Rx vessel w/ vessel closure bolts less than fully tensioned or head removed.
- LOT 202.44 QDPS*
- *
The upper section of the APC-2 cabinets provide valve control for which valves?
- *SG PORVs**
- Manual AND Automatic*
- *AFW throttle valves**
- Automatic ONLY*
- *Rx head vent valves**
- Manual ONLY*
SG PORVs controlled from MCR AND ASP.
- LOT 201.11 Containment Spray*
- *
While in MODES 1 - 4, how much trisodium phosphate must there be in the containment baskets?
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.*
- LOT 201.18 Rod Control*
- *
What causes a rod control Logic Cabinet Urgent failure?
- *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.*
- LOT 201.39 ESF DGs*
- *
What is the rated speed, power, and voltage of the ESF DGs?
600 RPM
- *5500 kW (Continuous)**
- 108% (83 days)*
- 110% (7 days)*
4.16 kV ± 10%
- Note:*
- ESF DGs will restore power to Class 1E buses in 10 secs following a LOOP.*
- LOT 201.06 CVCS*
- *
What are the gal/% thumb rules for the VCT and PZR?
- PZR:*
- *68.3 gal/%**
- VCT:*
- *33.9 gal/%**
Used to calculate leak rate
- LOT 201.33 Non-Class DC*
- *
What powers the 125 VDC bus 1A and 250 VDC bus 1A battery chargers?
MCC 1G1
MCC 1G5 (BOP DG)
- LOT 202.10 Condensate*
- *
What is the minimum flow required through the GSS condenser?
5600 gpm
Ensured by FV-7022
- LOT 201.15 RCS Temperature Monitoring*
- *
What are the RCS NR temperature instruments used for?
- Tavg:*
- *OT∆T**
- *OP∆T**
- *FW Isolation**
- P-4 w/ Tavg - Low (574 ˚F)*
- *P-12**
- < 563 ˚F [2/4] Blocks steam dumps*
- Auctioneered High Tavg:*
- *Rod Control**
- Indication on CP005 is Auctioneered Low Tavg*
- *Steam Dumps**
- *PZR Level Control**
- Auctioneered Low Tavg:*
- *C-17**
- Auctioneered High ∆T:*
- *Rod Insertion Limit**
3 in HL (120˚ apart for laminar flow concerns) and 1 in CL per loop.
Also has 3 fast response RTDs in CL per loop.
- Note:*
- 3 HL RTDs are averaged together to give signal. If 1 fails the system will automatically kick it out.*
- LOT 201.10 ECCS*
- *
What will cause an SI auto recirculation signal?
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*
- LOT 201.19 DRPI*
- *
What is the accuracy of DRPI with no failed channels?
± 4 Steps
- LOT 203.11 LWPS*
- *
What water sources drain into the WHT?
- Normal:*
- *Primary Sample Drains**
- 100 gpd*
- *MAB Gravity Drains**
- Filters / Demins*
- Alternate:*
- *RCDT**
- *Containment Normal Sump**
WHT should only be going up ≈ 100 gpd.
- LOT 202.41 Radiation Monitoring*
- *
What are the safety related monitors on RM-23?
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.*
- LOT 201.35 Non-Class DGs*
- *
What loads does the BOP diesel supply?
Battery Chargers 125V/250V
IA Compressor 14
Turning gears for MFPs and Main Turbine
Bearing Oil Lift Pump
Air Side Seal Oil Pump
Feeds MCC 1G5
BOP, NTF, and Security LTG DGs: 480 VAC / 700 KW / 1800 RPM
- Note:*
- BOP DG Fuel Tank will last 60 mins
- Auto Starts on loss of voltage, comes up to speed and closes breaker in 15 seconds
- LOT 202.33 RCB HVAC*
- *
When must Rx cavity and supports ventilation be in operation?
RCS > 350 ˚F
One train required.
Note:
Should be operating at ≥ 150 ˚F but _must_ be operating at ≥ 350 ˚F.
- LOT 202.14 SG Feedwater Pumps*
- *
If the SGFPT’s speed is > 1500 RPM and < 3300 RPM and the raise pushbutton is released, what happens to the SGFPT’s speed?
Lowers back to 1500 RPM
- LOT 201.14 PZR Pressure & Level*
- *
What is the basis for the size of the PZR?
- 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**
- LOT 202.17 MG / Exciter*
- *
What are the admin limits for MVARs in (+pf) and MVARs out (-pf)?
- MVARS in:*
- *90 MVARs**
- Gen Limit is 100 MVARs in*
- MVARS out:*
- *450 MVARs**
- LOT 201.02 RCS*
- *
What are the piping penetrations off the cold legs?
- Loop 1:*
- *PZR Spray**
- *SI Train “A” Injection** / RHR “A” Return
- Same Penetration*
- *Normal Charging**
- Loop 2:*
- *SI Train “B” Injection** / RHR “B” Return
- Same Penetration*
- Loop 3:*
- *SI Train “C” Injection** / RHR “C” Return
- Same Penetration*
- *CVCS Alternate Charging**
- Loop 4:*
- *PZR Spray**
- LOT 201.06 CVCS*
- *
At what pressure will the VCT relief valve (CV-3101) lift?
75 psig
Relieves to the RHT.
- LOT 201.04 PZR, PRT, & RCDT*
- *
What drains directly into the RCDT?
- *RCP Seal #2 Leakoff**
- *CVCS Valve Stem Leakoffs**
- *Flange Leakoff**
- *Excess Letdown**
- Alternate Path*
- LOT 201.10 ECCS*
- *
When must all HHSI pumps be inoperable per tech specs?
- *MODE 5**
- *MODE 6 w/ Rx Vessel Head on**
LCO 3.5.3.2 ECCS Subsytems - Tavg ≤ 200 ˚F
- LOT 201.27 Containment Combustible Gas*
- *
How is H2 lowered during a DBA LOCA?
- *One Recombiner in Service**
- ↓ H2 < 4%*
- Place in-service at 3.5%*
- *Purge containment through supplementary containment purge subsystem**
- ↓ H2 < LCL*
- Available once containment pressure ≈ atmospheric*
H2 Recombiner controlled from CP002
Containment Supplementary Purge is controlled from CP022
- LOT 201.41 ESF Load Sequencer*
- *
What are the different modes of the ESF sequencers?
- *MODE I: SI Signal**
- ≥ 4 of 6 slave relays from ESF actuation cabinets giving SI signal*
- *MODE II: LOOP**
- UV on 4.16 kV bus [2/4]*
- *MODE III: SI AND LOOP**
- Conditions for MODE I and MODE II exist*
- LOT 201.10 ECCS*
- *
What are the Emergency Core Cooling System (ECCS) acceptance criteria?
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
- 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?
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.
- LOT 201.10 ECCS*
- *
What will auto open the accumulator discharge valve? (MOV-039)
SI
- *RCS Pressure ≥ P-11**
- PZR Pressure ≥ 1985 psig [2/3]*
- LOT 202.13 Feedwater*
- *
How does the Deaerater MS Supply valves (PV-7174 / PV-7174A) behave during a large load rejection?
Opens and Pegs DA Pressure to preloss pressure for 6.3 mins
Open Permissives:
NO P-4
NO SI
NO P-14
- Maintains FWBP NPSH
- Minimizes flashing
- Note:*
- DA Pressure compared to Auctioneered High FWBP Temp (PSat) (Modulates Valves)
- DA Pressure / Rate compared to crossover piping pressure (Detects loss of load)
- LOT 201.10 ECCS*
- *
In order for the RWST to be OPERABLE in MODES 1 - 4, what must water volume and boron concentration be?
≥ 458,000 gallons
2800 ppm - 3000 ppm
LCO 3.5.5 RWST
Applicable: MODES 1 - 4
- LOT 201.37 Class 1E 125VDC*
- *
What powers the Class 1E 125VDC Buses (E1A11/E1B11/E1C11/E1D11)?
- Channel I:*
- *E1A11: E1A1 / E1A2**
- Channel II:*
- *E1D11: E1A4 / E1A1**
- Channel III:*
- *E1B11: E1B1 / E1B2**
- Channel IV:*
- *E1C11: E1C1 / E1C2**
1 2 4 1 1 2 1 2
- LOT 202.01 S/G*
- *
When will the SG Safeties lift?
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)
- LOT 201.43,44,45 Refueling Operations*
- *
What conditions will make the operator secure a core alteration?
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.
- LOT 201.04 PZR, PRT, & RCDT*
- *
What drains into the PRT?
- *RHR Pump Discharge Relief (3)**
- 600 psig*
- *HHSI Pump Discharge Relief (3)**
- 1750 psig*
- *LHSI Pump Discharge Relief (3)**
- 600 psig*
- *Safety Valves (3)**
- 2485 psig ± 1% [+ 2% / - 3% (LCO 3.4.2.2)]*
- *PORVs (2)**
- 87.5% on controller / 2335 psig*
- *Seal #1 Return Relief (1)**
- 150 psig*
- *CVCS Letdown Relief (CV-3100)**
- 600 psig*
- *Head Vents**
- LOT 201.14 PZR Pressure & Level*
- *
How many RCPs are required for PZR Spray?
- *RCP 1A ONLY**
- *OR**
- *RCP 1D ONLY**
- *OR**
- *RCPs 1B AND 1C**
- LOT 201.05 RCPs*
- *
What is the pressure, flowrate, and flowpath of the #2 Seal?
- Pressure:*
- *30 psig → 10 psig**
- Flowrate:*
- *3 gpm → 3 gph**
- Suction:*
- *Seal #1**
- Discharge:*
- *RCDT**
- LOT 202.14 SG Feedwater Pumps*
- *
If the SGFPTs speed is raised above 600 RPM and then speed is then reduced, what speed will trip the SGFPT?
450 RPM
Once SGFPT’s speed > 3300 RPM, cannot lower < 3300 RPM
- Note:*
- Trip Enabled when SGFPT is raised above 600 RPM OR LP GOV demand Signal > 100%.
- Trip Blocked when speed < 400 RPM AND SGFPT tripped.
- LOT 201.12 CCW*
- *
What will cause the thermal barrier isolation valve to shut?
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*
- LOT 201.10 ECCS*
- *
How do you place ECCS in-service during a plant heatup from cold shutdown?
- 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**
- LOT 201.11 Containment Spray*
- *
What does the Trisodium Phospate baskets maintain the pH of the ECCS water at during a DBA?
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.*
- LOT 201.19 DRPI*
- *
What will cause a rod bottom alarm?
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.*
- LOT 201.42 SFP Cooling*
- *
Where can the SFP discharge water to?
- *RHUTs**
- Only procedurally defined method*
- *RWST**
- *Waste monitor tanks**
- LOT 201.31 13.8 kV / 4.16 kV Electrical*
- *
What happens if you are paralleling across a 13.8 kV tie breaker and forget to open the breaker?
- 1F / 1G / 1H Tie - STBY*
- *15 sec alarms**
- *30 sec opens the tie breaker**
- *30.5 sec opens Aux / STBY incoming breakers AND the ESF Feeder Breakers**
- 1F / 1G / 1H STBY - STBY*
- *15 sec alarms**
- *30 sec opens other unit’s STBY Breaker**
- *30.5 sec opens Tie / Unit’s STBY incoming breakers AND the ESF Feeder Breakers**
- Does NOT open Aux incoming breaker*
- 1J AUX - STBY*
- *15 sec alarms**
- *30 sec opens Aux Breaker**
- *30.5 sec both STBY incoming breakers trip**
- 1J STBY - STBY*
- *15 sec alarms**
- *45 sec opens other unit’s STBY Breaker**
- *45.5 opens unit’s STBY breaker and AUX breaker**
- LOT 201.02 RCS*
- *
What are the piping penetrations off the intermediate legs?
- Loop 1:*
- *Drain to RCDT**
- Loop 2:*
- *Drain to RCDT**
- Loop 3:*
- *Drain to RCDT**
- *CVCS Letdown**
- Loop 4:*
- *Drain to RCDT**
- *CVCS Excess Letdown**
Loop drains go to suction of RCDT pumps. Do NOT go directly to RCDT.
- Note:*
- Flange leakoff goes directly to RCDT.*
- LOT 202.09 Steam Dumps*
- *
What causes the #1 and #2 solenoids to de-energize?
P-12: Tavg < 563 ˚F [2/4]
Two redundant channels. One for each solenoid.
Can bypass P-12 for Bank #1 Steam Dumps by placing switches on CP007 to Bypass Interlock. (Spring returns to ON)
- Must take switch to OFF/RESET to secure C/D feature.
- LOT 201.18 Rod Control*
- *
What is the RDMG’s output voltage and frequency?
260 VAC
59 Hz
Prevents alternate power supply connection
- Note:*
- Control switches to operate RDMGs are on local control panel only.*
- LOT 201.12 CCW*
- *
What CCW loads isolate when the CCW Surge tank reaches 64.6%? (1st Low Level Isolation)
- 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**
- LOT 201.16 Excore NIs*
- *
When removing the control power fuses and instrument power fuses, which should be removed first?
Instrument Power Fuses then Control Power Fuses
If control power removed first, then Rx trip or Rod control stop could occur.
- LOT 202.14 SG Feedwater Pumps*
- *
When does the SGFPTs trip on overspeed?
- Electrical Overspeed:*
- *5730 RPM (106%)**
- Mechanical Overspeed:*
- *5940 RPM (110%)**
- 109 / - 50 RPM*
- Normal Speed: 5400 RPM
- Critical Speed: 2500 RPM
- LOT 201.09 RHR*
- *
Which pressure transmitters provide the open permissive for the RHR Suction Valves? (MOV-060/MOV-061)
- 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”
- LOT 201.42 SFP Cooling*
- *
With regards to tech specs, what is the minimum water level of the SFP?
23 ft above the fuel assemblies
Bases: Minimum water level ensures 99% of the iodine gap activity released from a ruptured assembly will be removed.
- LOT 201.04 PZR, PRT, & RCDT*
- *
Where does the RCDT relief valve relieve to?
Containment Normal Sump
- LOT 202.13 Feedwater*
- *
What will trip a SUFW pump?
SUFW Lube Oil Pressure < 5 psig
- *FW Isolation**
- SI OR P-14 ONLY*
NPSH < 80 psid
- *Undervoltage**
- 1H Standby Bus*
Phase Differential
Overcurrent
On SUFW Trip:
- Discharge MOV / Non-Return close (Signal sent for 160 sec)
- Recirc Valve Closes (Signal sent for 5 sec)
- Aux cooling pumps start
- LOT 201.02 RCS*
- *
What is Keff, RTP, and Tavg when the plant is in MODE 1?
Power Operation:
- Keff:*
- *≥ 0.99**
- RTP:*
- *> 5%**
- Tavg:*
- *≥ 350 ˚F**
- LOT 201.04 PZR, PRT, & RCDT*
- *
What is the maximum spray line ∆T allowed by the TRM?
621 ˚F
TRM 3.4.9.2 PZR Temperature Limits
Applicable: At all times
- Note:*
- By procedure limited to 320 ˚F*
- LOT 201.19 DRPI*
- *
What will cause a DRPI Non-Urgent Alarm?
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.*
- LOT 201.04 PZR, PRT, & RCDT*
- *
What is the setpoint the PZR Safety valves?
- *2485 psig ± 1%**
- 2% / - 3% (LCO 3.4.2.2)*
3 safety valves
Keeps RCS ≤ 2735 psig w/:
- Turbine Trip w/ NO Rx Trip
- PORVs do NOT operate
- Steam dumps do NOT operate
- Note:*
- Relieves to PRT*
- LOT 202.41 Radiation Monitoring*
- *
Where can RM-11 be read from?
MCR
HP
TSC
Computer Room
- HP, TSC, and Computer room can only use “User Mode.” (Data Retrieval/acknowldeging alarms)
- MCR normally uses “Windows Supervisor Mode.” (Allows non-tech spec parameters to be monitored)
- “RM-11 Supervisor Mode” can only be used in MCR and requires password. (Allows changing of setpoints)
- LOT 201.02 RCS*
- *
What is Keff, RTP, and Tavg when the plant is in MODE 5?
Cold Shutdown:
- Keff:*
- *< 0.99**
- RTP:*
- *0%**
- Tavg:*
- *≤ 200 ˚F**
- LOT 202.33 RCB HVAC*
- *
How many Rx Containment Fan Coolers (RCFC) are required to be operating?
4 of 6 units
LCO 3.6.2.3 Containment Cooling
5 of 6 units OPERABLE
Keeps containment ≤ 110 ˚F during normal operation and during spray. (LCO 3.6.1.5 Containment Air Temperature)
- LOT 201.10 ECCS*
- *
At what RCS pressures will the ECCS Accumulators, HHSI pumps, and LHSI pumps inject into the RCS Cold Legs?
- HHSI:*
- *< 1600 psig**
- Accumulators:*
- *590 - 670 psig**
- LHSI:*
- *< 300 psig**
Receive water from RWST.
- Note:*
- During DBA, Accumulators will inject 1st.*
- LOT 203.14 GWPS*
- *
What are the principle isotopes of concern for the GWPS?
Kr-85
Xe-133
- LOT 203.11 LWPS*
- *
What is the function of the WHT?
Collects Reactor Grade leakage and other tritiated and aerated water sources
- Note:*
- Non-Reactor Grade water goes to Condensate Polishing Regeneration Waste Collection Tank (George Tank)*
- LOT 201.39 ESF DGs*
- *
What will auto start the standby lube oil pump?
- Auto Start:*
- *≥ 540 RPM AND < 35 psig header pressure**
Once started must manually secure pump
Powered: Class 1E 480V MCC
- Same as standby JW pump
- LOT 201.06 CVCS*
- *
What will generate a letdown valves sequence incorrect alarm?
Shutting MOV-465 OR MOV-468 prior to FV-011
Switches located on CP004.
- Note:*
- FV-011 shuts first to prevent water hammer in the regenerative HX.*
- LOT 201.12 CCW*
- *
What happens to the CCW system during a LOOP?
- *RHR HX Outlet Valve opens**
- *DWS Makeup to CCW Surge tank closes**
- *RCB Chilled Water Isolates to RCFCs**
- *RCDT HX Isolates**
- *Train “B” / Train “C” CCP X-Conn Closes**
- Supply and Return*
- *One CCW return header isolation closes**
- LOT 201.12 CCW*
- *
What will happen in the CCW system when the CCW Surge tank reaches 61.5%? (2nd Low Level Isolation)
- *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)*
- LOT 202.13 Feedwater*
- *
How is DA level control achieved?
- Manual:*
- *Used when < 5% Feed Flow**
- Single Element:*
- *Used 5% - 20% Feed Flow**
- *DAST Level ONLY**
- Average of DST #1/#2 Level compared to LK-7406 setpoint (CP008)*
- Three Element:*
- *Used > 20% Feed Flow**
- *DAST Level**
- Average of DST #1/#2 Level compared to LK-7406 setpoint (CP008)*
- *Feed Flow compared to Condensate Flow**
- Sum of all 4 feed flows*
Controls CD-7406A (Low Flow) [<40%] and CD-7406 (High Flow) [≥ 40%] (Switch at 40% is automatic)
- LOT 203.14 GWPS*
- *
What is the GWPS O2 limit IAW TRM 3.11.2.5 Explosive Gas Mixture?
3%
TRM 3.11.2.5 Explosive Gas Limit
Applicability: At all times
Placing inlet (FV-4657) OR outlet (FV-4671) handswitches in OPEN causes O2 sensor to become inoperable.
- Note:*
- 0%-5% range normally selected because system trip will occur at 20% of scale (1%).
- If 0%-25% range selected, trip would be 5% (Above TRM limit)
- LOT 201.13 ECW*
- *
What will auto start/stop the ECW pumps?
- 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
- LOT 201.19 DRPI*
- *
What is the half accuracy of DRPI when channel A fails?
-4 / + 10 Steps
- LOT 201.14 PZR Pressure & Level*
- *
How many PZR heaters are there and what is the KW rating / heater?
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
- LOT 201.19 DRPI*
- *
What will cause a rod deviation alarm?
- *Control Bank misalignment of ± 12 steps**
- Any rod and bank*
S/D Banks > 18 steps from full out
- LOT 201.36 Class 1E 4.16kV/480V*
- *
What is powered from the Class 1E 4.16 kV Buses (E1A, E1B, E1C)?
- Common to all: (Makes Sense)*
- Spells Leaches*
- *LHSI (A/B/C)**
- *ECW (A/B/C)**
- *AFW (1/2/3)**
- *CCW (A/B/C)**
- *HHSI (A/B/C)**
- *EAB Essential Chiller (A/B/C)**
- *Containment Spray (A/B/C)**
Different: (Doesn’t Make Sense)
- E1A:* CCP 1B
- E1C:* CCP 1A
- LOT 201.16 Excore NIs*
- *
What powers the excore NIs?
- 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.
- LOT 201.05 RCPs*
- *
What must pressure in the bearing oil lift system be in order to start a RCP?
600 psig
- Blue permissive light on CP005
- Bearing Oil pump must be running to start pump. (Not required for light however)
- Must be operated for ≥ 2 mins by procedure prior to starting RCP.
- LOT 202.28 AFW*
- *
What will auto start the AFW pumps?
- Motor Driven:*
- *SG Level - Low 2 (20%) [2/4 on 1/4]**
AMSAC (15%) [1/1 on 3/4] [25 sec TC]
- *Sequencers (MODE I,II,III)**
- MODE II starts pump but valves do NOT open*
- Turbine Driven:*
- *SG Level - Low 2 (20%) [2/4 on 1/4]**
AMSAC (15%) [1/1 on 3/4] [25 sec TC]
SI
Regulating Valves throttle and OCIVs open for:
- SG Level - Low 2 (20%) [2/4 on 1/4]
- AMSAC (15%) [1/1 on 3/4] [25 sec TC]
- SI
- LOT 202.13 Feedwater*
- *
What causes a Feedwater Isolation Signal?
- P-4 True:*
- *Tavg - Low (574 ˚F) [2/4]**
- No Permissives:*
- *SI**
- *P-14**
- S/G Level - High (87.5%) [2/4 on 1/4]*
P-4 True: Rx Trip [1/2] AND Bypass Bkr [1/2] open
- Note:*
- Closes FWIVs, bypasses, FRVs, Low FRVs, and PBVs
- Trips MFP turbines, SUFW, and the Turbine. (SI AND P-14 ONLY)
- Does NOT trip the FW Booster pumps
- LOT 201.14 PZR Pressure & Level*
- *
Which PZR Pressure instrument does not tie into P-11?
PT-458
P-11: PZR Pressure ≥ 1985 psig [2/3]
- LOT 203.11 LWPS*
- *
For an unprotected outdoor tank, what is activity limited to? (LCO 3.11.1 Liquid Holdup Tanks)
- *≤ 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.
- LOT 201.31 13.8 kV / 4.16 kV Electrical*
- *
What are some major loads powered from the 1D Loadcenters?
- *RCB Chillers**
- 11A (1D1) / 11B/C (2D2)*
- *MAB Chillers**
- 11A/B (1D1) / 11C/D (2D2)*
- *OLACW Pumps**
- 11 (1D2) / 12 & 13 (1D1)*
- *Low Pressure Heater Drip Pumps**
- 11 (1D1) / 12 & 13 (1D2)*
- *BTRS Chiller**
- May or May not be abandoned*
- LOT 201.06 CVCS*
- *
With regards to LT-112 and LT-113, how is level controlled in the VCT?
- 95%*
- *112A Full Divert**
- LT-112 AND LT-113*
- *Alarm**
- LT-113*
- 68% - 95%*
- *112A modulates diverting to RHT**
- LT-112*
- 48%*
- *Stops Auto M/U**
- LT-112*
- 28%*
- *Starts Auto M/U**
- LT-112*
- 15%*
- *Alarm**
- LT-112 AND LT-113*
- 3%*
- *Shifts CCP suction from VCT to RWST (112C / 113B)**
- *Isolates VCT outlet (112B / 113A)**
- LT-112 AND LT-113*
- LOT 201.38 Class 1E 120VAC*
- *
What powers the class 1E 120V distribution panels (DP001/DP002, DP1201/DP1202/DP1203/DP1204)?
- DP001:*
- Primary / Secondary / Battery*
- *E1A1 / E1A1 / E1A11**
- DP1201:*
- Primary / Secondary / Battery*
- *E1A2 / E1A1 / E1A11**
- DP1202:*
- Primary / Secondary / Battery*
- *E1A4 / E1A4 / E1D11**
- DP1203:*
- Primary / Secondary / Battery*
- *E1B1 / E1B1 / E1B11**
- DP1204:*
- Primary / Secondary / Battery*
- *E1C4 / E1C2 / E1C11**
- DP002:*
- Primary / Secondary / Battery*
- *E1C2 / E1C2 / E1C11**
- Note:*
- Primary source is through the inverter / rectifier. Secondary is through the VRT.*
- LOT 201.43,44,45 Refueling Operations*
- *
How long must the reactor be shutdown prior to removing fuel?
100 hrs
TRM 3.9.3 Decay Time
Applicable: During movement of irradiated fuel in the Rx Vessel
- LOT 201.31 13.8 kV / 4.16 kV Electrical*
- *
What provides control power for the RCP breakers?
125 VDC Bus 1B
Feeder breakers for the 13.8 kV Aux Buses are from the 125 VDC Bus 1A.
Precludes the possibility of losing both primary and backup protection of the containment penetration conductors for the RCPs?
- LOT 202.17 MG / Exciter*
- *
What does the different lights on the generator status mean?
- Green:*
- *Off**
- Auto Regulator de-energized, Base Adjust on Service*
- Amber:*
- *Test**
- Auto Regulator energized with output to null meter*
- Red:*
- *On**
- Auto Regulator in service*
- LOT 201.14 PZR Pressure & Level*
- *
At what PZR level will the heaters trip off?
- *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]
- Control Heaters have to be cycled off and then back to on.
- Note:*
- For LOOP / SI, B/U heaters control switch must be cycled to turn back on.*
- LOT 202.28 AFW*
- *
What is the major concern when cross-connecting AFW trains?
Runout of Pump (675 gpm)
Will not see on flow meters
- LOT 203.09 Condensate Polishing*
- *
What will auto open the CP bypass valve (MOV-132)?
High D/P across demins (105 psig)
Controlled from CP008 (Open/Shut) and locally (Can Jog)
- LOT 201.36 Class 1E 4.16kV/480V*
- *
Which XFMR(s) have an automatic load tap changer?
- *UATs**
- Located on CP010*
B ESF XFMRs
Located on CP003
B Class 1E buses receive power from standby XFMR which doesn’t have load changer
As Switchyard voltage lowers, load changer will adjust XFMR tap to raise bus voltage back up.
Will recover bus voltage to >3920 Volts within 35 seconds from a minimum switchyard voltage of 327.8 kV
- LOT 201.09 RHR*
- *
When is RHR placed in service?
≤ 350 ˚F
- *≤ 332 psig**
- Interlock to open MOV-060/MOV-061*
No auto close features for MOV-060/MOV-061.
- LOT 201.16 Excore NIs*
- *
How would power behave if the Intermediate range was undercompensated or overcompensated?
- 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.*
- LOT 201.06 CVCS*
- *
What will automatically close the VCT outlet isolation valves (MOV-112B/MOV-113A)?
- MOV-112B AND MOV-113A*
- *SI**
- Opens MOV-112C AND MOV-113B*
- MOV-112B*
- *VCT Level - Low 2 (3%) [LT-112]**
- Opens MOV-112C*
- MOV-113A*
- *VCT Level - Low 2 (3%) [LT-113]**
- Opens MOV-113B*
To ensure CCPs have suction water at all times, RWST supply valves (MOV-112C/MOV-113B) must be full open to close respective VCT Outlet valve (MOV-112B/MOV-113A).
- Note:*
- Holding the manual switches for the valves (112B/C and 113A/B) will override any auto functions and the valves will position as selected.
- Located on CP004.
- LOT 201.05 RCPs*
- *
What is the pressure, flowrate, and flowpath of the #1 Seal?
- Pressure:*
- *2250 psig → 30 psig**
- Min D/P: 220 psid*
- Flowrate:*
- *8 gpm → 3 gpm**
- Suction:*
- *CVCS**
- Discharge:*
- *VCT ****
- CCP Suction*
- *Seal #2**
Inlet temperature ≈ 110 ˚F (Do not exceed 230 ˚F)
≈ 5 gpm goes to pump radial bearing and thermal barrier HX
Note:
On ΦA CI, Seal return to VCT isolates and relief will lift (150 psig) to send water to PRT.
- LOT 201.10 ECCS*
- *
What valves in the ECCS have a power lockout feature?
- *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.*
- LOT 201.29 Fire Protection*
- *
Which fire hydrants are safety related?
- ECW Intake Structure:*
- *Fire Hydrant #13**
- Restore OR Route hose within 1 hr*
- AFWST:*
- *Fire Hydrant #7 (Unit 1)**
- Restore OR Route hose within 1 hr*
- *Fire Hydrant #20 (Unit 2)**
- Restore OR Route hose within 1 hr*
- Fire Pump Hose House:*
- *Fire Hydrant #10**
- Restore OR Route hose within 1 hr*
- LOT 201.14 PZR Pressure & Level*
- *
At what pressure will the PORV (PCV-655A) lift when COMS is armed?
- 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%)*
- LOT 201.18 Rod Control*
- *
What causes a rod control Power Cabinet Urgent failure?
- *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.*
- LOT 202.13 Feedwater*
- *
What are the open permissives for the FWIVs?
SGNR Level > 5%
SG Pressure > 685 psig
- FWIVs fail closed on loss of hydraulics/power. (Will not close on loss of N2 pressure)
- Hydraulic open / N2 closed
- FW Isolation Energizes Train A/B solenoids, which secure the hydraulic pumps and dump hydraulic fluid (Manual switches [2 / SG] located on CP006)
- Open permissives being met allows de-energizing Train A/B solenoids.
Note:
Same concept for FWIBs and Preheater Bypass Valves (PBVs) except solenoids de-energize to dump hydraulics and energize to allow opening.
- LOT 202.10 Condensate*
- *
What will auto close the condensate header min flow valve (FV-7022)?
CD Header Pressure < 300 psig
Ensures 5600 gpm flow through GSS Condenser.
Note:
Indicated CD Flow on CP008
- LOT 201.39 ESF DGs*
- *
What will trip the ESF DGs while operating in Emergency Mode?
- *Engine Overspeed**
- 660 RPM (110%)*
Generator Differential
- *Turbo / Engine Lube Oil - Low [1/2 on 2/2]**
- Normal Mode [1/2 on 1/2]*
- *Emergency Stop Pushbutton [2/2]**
- ZLP-102*
- *Emergency Stop Plunger pulled out**
- CP003*
- LOT 201.14 PZR Pressure & Level*
- *
While operating in MODE 1, what is your PZR Pressure DNB limit?
2200 psig
LCO 3.2.5 DNB Parameters
Applicable: MODE 1
- LOT 201.39 ESF DGs*
- *
What is the minimum level required in each ESF DG fuel oil storage tank?
60,500 gallons
LCO 3.8.1.1 AC Sources - Operating
LCO 3.8.1.2 AC Sources - S/D
LCO 3.8.1.3 AC Sources - S/D
Capacity: 70,000 gallons
Will generate a TROUBLE Alarm (Appeared on NRC Exam)
- Note:*
- Will last for 7 days (≥ 60,500 gallons)*
- LOT 201.14 PZR Pressure & Level*
- *
What are the important PZR Master pressure controller setpoints?
- PCV-655A:*
- *87.5%: Opens (2335)**
- *75%: Closes (2315)**
- Spray Valves:*
- *72%: Full Open (2310)**
- *40.5%: Start to Open (2260)**
- Control Heaters:*
- *34.5%: Zero Power (2250)**
- 22%: NOP (2235)*
- *15.5%: Full Power (2220)**
- B/U Heaters:*
- *14.5%: Turn Off (2218)**
- *9.5%: Turn On (2210)**
- LOT 201.14 PZR Pressure & Level*
- *
At what pressure will the PORV (PCV-656A) lift when COMS is armed?
- 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)*
- LOT 201.16 Excore NIs*
- *
What will cause the following alarms?
- PR Upper detector deviation
- PR Lower detector deviation
- PR Channel deviation
- PR Upper Detector Deviation:*
- *Highest PR Channel Upper Detector Current > 2% above Average detector current [60 sec TC]**
Upper detector current ≤ 50% of full power current
- PR Lower Detector Deviation:*
- *Highest PR Channel Lower Detector Current > 2% above Average detector current [60 sec TC]**
Lower detector current ≤ 50% of full power current
- PR Channel Deviation:*
- *Highest to lowest PR channels deviate > 4% [5 sec TC]**
- LOT 201.14 PZR Pressure & Level*
- *
What is the PZR Program Level for 0% RTP and 100% RTP?
- 0% RTP (567 ˚F):*
- *25%**
- 100% RTP (593 ˚F):*
- *57%**
At actual 100% RTP (592 ˚F) PZR Level will be 55.7%.
- LOT 201.20 SSPS*
- *
Which actuation train’s urgent alarm will result in a logic train’s urgent alarm?
Actuation Train “A” → Logic Train “R”
Actuation Train “B” → Logic Train “S”
Actuation Train “C” does NOT result in a logic train’s urgent alarm.
Actuation Train “C” trouble alarm does result in a Logic Train “R” AND Logic Train “S” trouble alarm.
- Note:*
- Urgent alarms on CP026.*
- LOT 201.16 Excore NIs*
- *
Where are the NIs physically located on the core?
- *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.
- 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?
- 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.
- LOT 202.26 Service / Instrument Air*
- *
What happens as IA pressure lowers?
- 122 psig / 119 psig / 116 psig / 113 psig:*
- *Compressors 11 - 13 / 14 Start**
- Lead / Standby / Lag / Air Cooled*
- 100 psig:*
- *Service Air Isolation Closes**
- Reset on ZLP-134 (TGB 29’ by compressors 11/12/13)*
- 90 psig:*
- *IA to yard Closes**
- 88 psig:*
- *Low Power FRVs drift closed**
- 80 psig:*
- *IA Dryer Bypass Opens**
- Reset by valve*
- *Letdown Header Orifice header isolation valves drift Closed**
- 67 psig:*
- *MFRVs drift Closed**
60 psig:
Manually Trip the Rx
MSIVs drift Closed
Service / IA Air pressure indicated on CP008.
- LOT 201.43,44,45 Refueling Operations*
- *
How many SR detectors must be operable while in MODE 6?
2 SR Detectors
Both with visual indication
One with audio for MCR and Containment
1 Extended Range may be substituted for 1 SR if remaining SR provides audible count rate.
- LOT 201.04 PZR, PRT, & RCDT*
- *
What is the maximum amount of water that can be in the PZR in MODES 1-3?
- *≤ 1816 ft3**
- ≈ 100% PZR LVL*
LCO 3.4.3 PZR
Applicable in MODES 1-3
- Note:*
- Total PZR volume is 2100 ft3*
- LOT 202.28 AFW*
- *
What is the minimum volume in the AFWST as required by LCO 3.7.1.3 AFWST?
485,000 gals
LCO 3.7.1.3 AFWST
Applicability: MODES 1 - 3
- LOT 201.09 RHR*
- *
What happens in the RHR system during a SI?
RHR HX Bypass Closes
RHR HX TCV Valve Full Open
RHR Pumps Trip
- *CCW from RHR HX opens**
- CCW pump mini-flow concerns*
- LOT 201.30 Offsite Electrical*
- *
Procedurally, what is the current rating of the standby transformer windings?
1621 Amps / Winding
Equivalent to 2 Aux Busses and all 6 ESF busses fully loaded.
- LOT 201.29 Fire Protection*
- *
What is required to be FUNCTIONAL in the Fire Protection System?
2 Tanks (300,000 gal each)
2 Pumps (2500 gpm each)
- 1 Pump FUNCTIONAL (Restore in 7 days)
- Total Volume ≥ 300,000 gal but < 600,000 gals (Restore in 7 days)
- Pumps AND Volume NOT FUNCTIONAL (Restore in 24 hours)
- Underground Piping NOT FUNCTIONAL (Restore in 24 hours)
Note:
Only Safety Related portion of the system is the CIVs
- LOT 202.08 Extraction Steam / MSRs*
- *
Where does the extraction steam go on the LP Turbine?
- Turbine End:*
- *4th Stage: FWH 14A/B**
- *6th Stage: FWH 15A/B/C**
- *8th Stage: FWH 16A/B/C**
- Generator End:*
- *2nd Stage: FWH 13A/B**
- *6th Stage: FWH 15A/B/C**
Blowdown flash tank steam goes to FWH 13A/B.
- LOT 201.14 PZR Pressure & Level*
- *
What Tavg is used to calculate PZR program level?
Auctioneered High Tavg
Compares selected controlling channel level (LT-465 or LT-467) to program level to determine demand to FCV-0205.
- LOT 201.02 RCS*
- *
What would Loop 1 RCS flow indicate if the high pressure tap on loop 1 ruptures?
All loop flows in that loop fail to zero
Loop flow consists of 1 High Pressure (Outside of elbow) and 3 Low Pressure (Inside of elbow).
↓∆P = ↓HP - LP → Flow ↓
Note:
Rupture of a Low pressure tap would result in Flow failing high on 1 of 3 flow instruments.
- LOT 201.02 RCS*
- *
What is Keff, RTP, and Tavg when the plant is in MODE 2?
Startup:
- Keff:*
- *≥ 0.99**
- RTP:*
- *≤ 5%**
- Tavg:*
- *≥ 350 ˚F**
- LOT 202.09 Steam Dumps*
- *
What causes the #3 solenoid to energize?
- Tavg Mode:*
- *C-9**
- Condenser Vacuum > 22” Hg AND CW breaker Shut [1/4]*
AND
- *C-7 OR C-8**
- C-7: 10% load reduction OR 5%/min*
- C-8: EH pressure 1245.8 psig [2/3] OR TVs closed [2/4]*
- Pressure Mode:*
- *C-9**
- Condenser Vacuum > 22” Hg AND CW breaker Shut [1/4]*
AND
Steam Header Pressure > Setpoint
If C-7 energizes #3 solenoid, must reset on CP007 to de-energize #3 solenoid.
- LOT 201.01 RCB*
- *
What is the design pressure of containment?
- Internal:*
- *56.5 psig**
- Between -0.1 and +0.3 psig*
- CNMT PRESS HI / LOW (CP002)*
- (LCO 3.6.1.4 Containment Internal Pressure)*
- External:*
- *3.5 psig**
Max expected for DBA is 41.2 psig
CNMT PRESS HI/LOW on CP002 will put you in LCO 3.6.1.4 Containment Internal Pressure.
- Note:*
- Design temperature is 286 ˚F*
- LOT 202.13 Feedwater*
- *
What Deaerator Storage Tank level setpoints will cause automatic / operator actions?
- High 2 (89%/90%): [2/2]*
- *DA Inlet MOVs Close (CD-574/CD-575)**
Extraction Steam Block / Non-Return valves Close
FW HTR 11A/B Drain to DA Valves Close
- 86%: [2/2]*
- *High Level Dump Valves Open (FW-7175/7175A)**
- 40%:*
- *Start Standby Condensate Pump (Operator Action)**
- Does not require venting*
- 30%:*
- *POP09/POP04 requires Rx Trip**
- 6%:*
- *FWBPs Trip**
Normal Level is 70%
Note:
Meter on CP008 and ICS will stop indicating at 30%
- LOT 201.27 Containment Combustible Gas*
- *
What are the sample points for the H2 monitors?
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*
- LOT 202.02 Main Steam*
- *
Where does AFW #14 tap off the Main Steam system?
SG “D” PORV line
- LOT 201.06 CVCS*
- *
What will close the letdown orifice header isolation valve (FV-011)?
- *CI ΦA**
- *PZR Lvl - Low (17%)**
- LT-0465 OR LT-0468*
- *Loss of Air**
- *Loss of MCC E1C1**
- PZR Low Lvl on LT-0465 will close LCV-465 after 10 sec TD.
- PZR Low Lvl on LT-0468 will close LCV-468 after 10 sec TD.
- Note:*
- To reopen FV-011:*
- PZR LVL > 17% on LT-0465 AND LT-0468
- LCV-465 AND LCV-468 open
- CI ΦA signal not present
- LOT 201.36 Class 1E 4.16kV/480V*
- *
What powers the RHR pumps, SFPC pumps, and the B/U PZR heaters?
- RHR:*
- *A: E1A2**
- *B: E1B2**
- *C: E1C1**
- SFPC:*
- *A: E1B1**
- *B: E1C1**
- PZR B/U Heaters:*
- *A: E1A1**
- *B: E1C1**
- LOT 202.01 S/G*
- *
What is the minimum Rx power that the SGs can be fed through the main feed nozzle?
4%
Prevents thermal stratification at low feedwater flows
Note:
Cannot use main feed when RCS temperature < 340 ˚F.
- LOT 201.20 SSPS*
- *
What are the bases for the different regions of the Reactor Core Safety Limits - 4 Loops in Operation COLR graph (Tavg vs RTP)?
Flat Region (Green)
Ensures that no bulk boiling will occur at the core exit so that the OPΔT and OTΔT trips remain functional
Steep Region (Pink)
Assures that DNB does not occur (DNBR is maintained >1.52)
- LOT 202.14 SG Feedwater Pumps*
- *
What provides steam to the SGFPTs?
- 2% - 40%:*
- *MS Equalizing Header**
- 40% - 100%:*
- *Reheat Steam from MSR 11**
- LOT 201.06 CVCS*
- *
What are the flowrates of the CVCS letdown orifices?
- *120 gpm - 150 gpm**
- Normally in service*
- *85 gpm - 100 gpm**
- *25 gpm - 30 gpm**
Flowrate based on 2235 psig in RCS.
- Note:*
- FV-012 (120 gpm - 150 gpm) and FV-013 (85 gpm - 100 gpm) are air operated and fail close on loss of air.
- FV-014 (25 gpm - 30 gpm) is a MOV.
- LOT 201.01 RCB*
- *
What must IA header pressure to the airlock seals be in order to make the personnel airlock OPERABLE?
≥ 90 psig
Cannot decay more than 0.5 psig in 8hrs.
Cannot decay more than 1.5 psig in 24 hrs.
- Note:*
- LCO 3.6.1.3 Containment Airlocks is APPLICABLE in MODES 1 - 4.*
- LOT 201.02 RCS*
- *
What are the piping penetrations off the hot legs?
- Loop 1:*
- *RHR “A” Suction**
- *SI “A” Recirc**
- *Sampling**
- Loop 2:*
- *RHR “B” Suction**
- *SI “B” Recirc**
- Loop 3:*
- *RHR “C” Suction**
- *SI “C” Recirc**
- *Sampling**
- Loop 4:*
- *PZR Surge Line**
- LOT 201.16 Excore NIs*
- *
What areas of the gas filled detector curve does each NI operate in?
- Source Range:*
- *Proportional Region**
- Intermediate Range:*
- *Recombination Region**
- Inner Can*
- *Ionization Region**
- Outer Can*
- Power Range:*
- *Ionization Region**
- LOT 201.18 Rod Control*
- *
How is the Terror signal generated in the Rx Control Unit?
- Terror = (Tref - Tavg) + (Turb Load - NI power)*
- *Tref → Turbine Impulse Pressure (PT-505)**
- *Tavg → Auctioneered High Tavg (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
- LOT 201.06 CVCS*
- *
What will close the letdown CIVs (CV-023 / CV-024)?
- *CI ΦA**
- *High Energy Line Break**
- 112.7 ˚F [1/8] in MAB room shuts associated valve*
- LOT 201.20 SSPS*
- *
What pressure transmitter does tech specs allow you to bypass rather than place in trip?
- *Containment Pressure (PT-937)**
- Used for Containment Spray*
- Containment Pressure - High 3 (9.5#) [2/4]*
- LOT 201.04 PZR, PRT, & RCDT*
- *
What drains into the suction of the RCDT pump?
- *PRT**
- *Cavity Drain**
- *SI Accumulator Drains**
- *RCS Loop Drains**
- Note:*
- RCDT Pump will auto stop on Flow - Low 2*
- LOT 201.14 PZR Pressure & Level*
- *
What controls the opening of the PORVS? (PCV-655A / PCV-656A)
- 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
- LOT 201.04 PZR, PRT, & RCDT*
- *
What is the setpoint of the PZR PORVs?
2335 psig
- PCV-655A: E1A11
- PCV-656A: E1B11
- Block valves are Class 1E 480V.
Both PZR PORVs AND Block valves required to be OPERABLE in MODES 1-3 (LCO 3.4.4)
- Note:*
- Relieves to PRT*
- LOT 201.10 ECCS*
- *
What is the system lineup during hot leg recirc?
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.*
- LOT 201.06 CVCS*
- *
What will automatically close MOV-033A/B/C/D and, by doing so, isolate RCP seal injection?
- *CI ΦA **
- *WITH**
- *Charging Header Pressure - Low (≤ 560 psig)**
- Indicated on CP004 (PT-204)*
Note:
Holding switch on CP004 in “OPEN” position will override auto closure signal and allow valve to stay open.
- LOT 202.10 Condensate*
- *
What will a high level in FW Heaters 15/16 cause?
Closes Inlet/Outlet valve for respective string
Opens Bypass MOV
Trips associated LPHD Pump
Relays for automatic High level actuation comes from LPHD pump control power.
NO AUTO FEATURES FOR FW HTRS 13/14
Note:
Anticipated following a Rx Trip
- LOT 203.11 LWPS*
- *
What system does the LWPS use to discharge water?
OLACW
CWS
Activity - High on RT-8038 will terminate discharge (FV-4077) and send water back to respective WMT. (Long path recirc)
- LOT 202.08 Extraction Steam / MSRs*
- *
Where does the extraction steam go on the HP Turbine?
4th Stage Extraction: FWH 11A/11B
Exhaust: DA (FWH 12)
- LOT 202.22 Circulating Water*
- *
How long must the circulating water pumps remain in operation after a LWPS discharge is complete?
1.5 Hours
- LOT 203.14 GWPS*
- *
What will auto shutdown the GWPS?
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.*
- LOT 203.14 GWPS*
- *
What are the influents to the GWPS?
Low pressure N2
PRT
RCDT
LWPS Waste Evaporator
BRS Recycle Evaporator
BRS Recycle Holdup Tanks
VCT
Rx Head Degassing Tank
- LOT 201.42 SFP Cooling*
- *
What will auto close the RWST purification pump’s suction valves?
SI
Will not trip the pumps
Valves will fail close on loss of IA or DC control power.
- Note:*
- Controlled on CP001*
- LOT 202.01 S/G*
- *
When will the SG PORVs lift?
1225 psig (± 7 psig)
- Used to Cooldown plant when condenser not available
-
After a Rx trip, Tavg will stabile at 571 ˚F.
- With the condenser available (Steam Dumps), Tavg will stabilize at 567 ˚F
- All four PORVs together have capacity of 25% (6.25% each)
Note:
Relieves to atmosphere (Roof)
- LOT 201.12 CCW*
- *
What will happen in the CCW system during a SI?
- *All 3 CCW pumps start**
- 20 Sec on ESF DG Sequencer*
- Will start even if switches on CP001/CP002 are in off*
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.*
- LOT 201.20 SSPS*
- *
What ESF actuations are NOT defeated when the master relay defeat switch is in the “defeat/cvi available” position?
- *CVI**
- Will be defeated in “Defeat All” Position*
- *COMS**
- LTOP Relief*
PZR PORVs
- *PZR Level - Low (17%)**
- Letdown Isolation*
- *VCT Level - Low (3%)**
- Swapover to RWST*
- *Boric Acid Tank Level - Low 2 (29,584 gal)**
- Isolates Purification*
- *RHR Flow - Low (925 gpm [5 sec TC])**
- Trips RHR pump*
- *SI Auto Recirc**
- LHSI / HHSI takes suction on containment sump vice RWST*
- LOT 202.22 Circulating Water*
- *
What will energize the blue start permissive light on CP009?
Discharge Column filled*
- *Seal Pressure > 30 psig**
- < 50 psig starts standby pump*
Discharge Valve Closed
> 5 mins since last CW pump start
Can use Jet pump to draw air and moisture out of CW discharge column.
- Uses screen wash header as prime water
- LOT 202.09 Steam Dumps*
- *
How does the operator determine the correct setpoint for the Header Pressure Controller (PK-0557) on CP007?
Desired Pressure/Span of PI-557*10
1185 psig/1400 psig *10 = 8.46 turns
- LOT 202.13 Feedwater*
- *
What is required to reset a FW isolation?
- P-14:*
- *Reset SI/P-14 (CP006) w/ P-4 False**
- *Reset FW Cont & Bypass Valves (CP006)**
- *FW Isolation Switches to “Open” (CP006)**
- Allows control of PBVs, FWIVs, and FWIBs*
SI:
Reset SI (CP001)
Reset SI/P-14 (CP006) w/ P-4 False
Reset FW Cont & Bypass Valves (CP006)
FW Isolation Switches to “Open” (CP006)
Allows control of PBVs, FWIVs, and FWIBs
- P-4 w/ Tavg Low (574 ˚F) [2/4]:*
- *Reset Low Tavg (CP006)**
- Resets all valves except MFRVs*
- *FW Isolation Switches to “Open” (CP006)**
- Allows control of PBVs, FWIVs, and FWIBs*
- *P-4 must be False to operate MFRVs**
- LOT 201.09 RHR*
- *
Where in the CVCS does RHR enter and exit?
- 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
- LOT 202.33 RCB HVAC*
- *
When should the CRDM cooling fans be in operation?
- *RCS > 150 ˚F**
- Must be placed in operation at 350 ˚F*
2 of 3 required for operation.
Power Supply: MCC 1A5/1B5/1C5
Note:
Designed to keep CRDM insulation < 392 ˚F.
- LOT 201.18 Rod Control*
- *
What does the Rod Control Startup Switch reset?
- POSSUM:*
- *P/A Converter**
- *Bank Overlap Unit**
- *Step Counters**
- *Slave Cyclers**
- *Urgent Failures**
- *Master Cycler**
Located on CP005.
- 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?
- Water Volume:*
- *8800 gal - 9100 gal**
- Boron Concentration:*
- *2700 ppm - 3000 ppm**
LCO 3.5.1 Accumulators
Applicable: MODES 1 - 3
- LOT 201.10 ECCS*
- *
When does the accumulator relief lift?
700 psig
Relieves to Containment Atmosphere
- HHSI Discharge Relief (1750 psig) → PRT
- LHSI Discharge Relief (600 psig) → PRT
- LOT 202.09 Steam Dumps*
- *
What causes the #4 solenoid to energize?
Turbine Trip (C-8):
- *High 1: Tavg - Tref > 13 ˚F**
- Trips open steam dump banks 1 and 2*
- *High 2: Tavg - Tref > 26 ˚F**
- Trips open steam dump banks 3 and 4*
No Deadband
Load Rejection (C-7):
- *High 1: Tavg - Tref > 7.41 ˚F**
- Trips open steam dump banks 1 and 2*
- *High 2: Tavg - Tref > 11.81 ˚F**
- Trips open steam dump banks 3 and 4*
Setpoint changes based on chart
- *3 ˚F deadband at 592 ˚F Tavg**
- Allows Rods a chance to fix deviation*
Active in Tavg MODE only.
- Note:*
- Tavg driven off Auctioneered High Tavg
- Tref driven of PT-505
- LOT 201.19 DRPI*
- *
What will cause a DRPI Urgent Alarm?
Data A AND Data B failure
Detector Failure
Control Unit Failure
Generates a RPI Trouble Alarm (CP005) and General Warning.
- LOT 201.21 Containment Isolation*
- *
What will cause a SL Isolation Signal?
- ≥ P-11:*
- *Steam Pressure - Low (735 psig) [2/3 on 1/4]**
- < P-11:*
- *Steam Pressure Rate - High (100 psig w/ 50 sec TC) [2/3 on 1/4]**
- No Permissive:*
- *Containment Pressure - High 2 (3.0 psig) [2/3]**
- *Manual [1/2] (CP005/CP006)**
P-11: PZR Pressure < 1985 psig [2/3]
Resets located on CP005/CP006.
- Note:*
- Isolates MSIVs and MSIV bypass valves.*
- LOT 201.30 Offsite Electrical*
- *
Which switchyard breakers can be operated from the control room?
- Unit 1:*
- *Y510 / Y520**
- Unit 2:*
- *Y590 / Y600**
Isolates the Main Transformer from the switchyard.
- Note:*
- Visual Indication on CP007 AND CP010. Operable from CP007 ONLY.*
- LOT 202.03 Main Turbine*
- *
How are the throttle and governor valves controlled during a turbine startup?
- 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.
- LOT 201.20 SSPS*
- *
What supplies power to the Solid State Protection System (SSPS) logic cabinets?
- Channels 1 and 3 of Logic R:*
- *DP1201 / DP1203**
- *E1A11**
- (125 VDC for shunt trip)*
- Channels 2 and 4 of Logic S:*
- *DP1202 / DP1204**
- *E1B11**
- (125 VDC for shunt trip)*
Rectifies 120VAC from DP1201 - DP1204 to 48 VDC and 15 VDC.
- Note:*
- DP1201 supplies Actuation Train A
- DP1203 supplies Actuation Train B
- DP1204 supplies Actuation Train C
- LOT 202.14 SG Feedwater Pumps*
- *
What speed controllers provide input to the Low / High Pressure governor valves?
- Manual:*
- *0 RPM - 5700 RPM**
- SG Level Control:*
- *3300 RPM - 5600 RPM**
SG Level Control:
- D/P= FW Pressure - Steam Pressure
- Reference D/P 0%: 65 psid
- Reference D/P 100%: 169 psid
Note:
Whichever controller is lower is the one that has control of speed.
- LOT 201.13 ECW*
- *
What loads does ECW supply?
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*
- 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?
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]
- LOT 201.12 CCW*
- *
What systems operate at a higher pressure than CCW?
- *RHR HX**
- *RCP Thermal Barrier**
- *Letdown HX**
- *Excess Letdown HX**
- *RCDT HX**
- *Primary Sample Coolers**
- *SFP HX**
- LOT 201.04 PZR, PRT, & RCDT*
- *
When will the rupture discs on the PRT relieve pressure?
100 psig
Normally pressurized with 3 psig N2.
- LOT 201.01 RCB*
- *
What is the containment average air temperature limit as required in LCO 3.6.1.5 Contaiment Air Temperature?
≤ 110 ˚F
Determined by looking at running RCFC inlet temperatures.
- LOT 202.09 Steam Dumps*
- *
What does the Imp Selector switch do on CP007?
- Defeat PT-505:*
- *PT-506 used for C-5 interlock**
- Defeat PT-506:*
- *Nothing**
C-5: Turbine Impulse pressure < 15% [1/1]
- Stops AUTO outward rod motion.
- LOT 201.06 CVCS*
- *
When will the letdown temperature divert valve (TCV-143) automatically bypass the demins?
Letdown HX Discharge Temp - High (137 ˚F)
OR
BTRS Demin Inlet Temp - High (157 ˚F)
Located on CP004
- Note:*
- Loss of Air/voltage fails to divert.*
- LOT 201.33 Non-Class DC*
- *
What powers the 125VDC Bus 1B Battery Chargers?
MCC 1A5
MCC 1G8 (TSC DG)
- LOT 201.42 SFP Cooling*
- *
With regards to tech specs, what is the minimum boron concentration of the SFP?
2500 ppm
Basis: Need 2200 ppm to maintain keff < 0.95 during a DBA of loading fuel in the wrong spot. 2500 ppm provides extra margin.
