Systems Test 1 Flashcards
- LOT 201.35 Non-Class DGs*
- *
When will the Non-Class DGs trip on overspeed?
- BOP / NTF / LTG:*
- *2073 RPM**
- ≈115% of 1800 RPM*
- TSC / Flex:*
- *1980 RPM**
- 110% of 1800 RPM*
- Note:*
- TSC DG also equiped with sequencer to prevent overloading TSC DG during S/U.*
- LOT 201.37 Class 1E 125VDC*
- *
What are some loads powered from the Class 1E 125VDC system?
Train A/B/C:
(A / B ONLY)
Rx Trip Breaker Control Power
PZR PORVs
ESF DGs:
Field Flash
Sequencers (A/B/C)
PL-139A/B/C (DG Control Panels)
ESF:
4.16 kV / 480V ESF Control Power
PL-39A/B/C (EAB)
Class 1E 120V Inverters
Train D:
- *Terry Turbine MOVs**
- *PL-40A (EAB)**
- *Class 1E 120V Inverter (1202)**
- LOT 201.21 Containment Isolation*
- *
What will cause a Phase A CIS?
SI
P-11 False:
PZR Pressure - Low (1857 psig) [2/4]
Steam Pressure - Low (735 psig) [2/3 on 1/4]
No Permissives:
Containment Pressure - High (3.0 psig) [2/3]
Manual [1/2] (CP001/CP005)
Manually [1/2] (CP002/CP005)
P-11 False: PZR Pressure ≥ 1985 psig [2/3]
Reset located on CP002.
- Note:*
- Will effect systems not safety related. (i.e IA to RCB)*
- LOT 201.31 13.8 kV / 4.16 kV Electrical*
- *
What are some major loads powered from the 1D Loadcenters?
RCB/MAB Chillers
OLACW Pumps
Low Pressure Heater Drip Pumps
- *BTRS Chiller**
- May or May not be abandoned*
- LOT 201.01 RCB*
- *
How many emergency sumps are in the RCB?
Three
Supplies LHSI, HHSI, and Containment Spray (CS)
- Note:*
- Located on RCB -11’ 3”*
- LOT 203.25 ICS*
- *
Which lampboxes are covered by tech specs?
Lampbox 5M03 D3 (AFD HI)
Lampbox 5M03 D5 (Rod Supv Mntr Rod Position TRBL)
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- 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 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
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Keeps containment ≤ 110 ˚F during normal operation and during spray. (LCO 3.6.1.5 Containment Air Temperature)
- 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**
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- LOT 201.23 Primary Sampling*
- *
What chemicals are added to the primary?
H2
pH w/ Φgamma and O2 control
Added to VCT
Hydrazine
pH w/o Φgamma and O2 control
Added to CVCS chemical mixing tank
LiOH
Minimizes corrosion and buildup of crud
Added to CVCS chemical mixing tank
- *Boric Acid**
- Added to CVCS Charging pump suction*
- LOT 203.25 ICS*
- *
Describe how U1118 measures feedwater flow if LEFM system is lost?
Switches to Corrected Venturi Input
AND
Starts 72 hr timer
Switches to Venturi Input when 72 hr timer expires
OR
> 10% drop in Rx power
Will bypass Corrected Venturi input and 72 hr timer
Power drop compares current Rx Power to captured LEFM Rx power
Correction Factors and Power level are captured when LEFM lost for Corrected Venturi Input.
Note:
Time Remaining changes from Cyan to Red when 6 hrs are remaining on clock.
- LOT 201.33 Non-Class DC*
- *
What is powered by 250 VDC Bus 1A?
TG Lube Oil EOP
Air Side Seal Oil Back-up Pump
SGFPT Emergency Oil Pumps
Generator Breaker Control Panel/Power
- 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)
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- LOT 201.39 ESF DGs*
- *
What is the purpose of the reset and release pushbuttons on CP003?
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- Reset:*
- *Resets all Normal DG Trips**
- Release:*
- *Switches DG from Emergency Mode → Normal Mode**
- Switches from Isoch Mode → Parallel Mode*
Must press Reset button, verify master trip circuit reset light illuminated, and then release ESF DG from Emergency Mode. (DG will trip if not done)
Note:
- If Normal Trip was received in Emergency Mode, DG will stop immediately once Stop pushbutton pressed. (No 5 min C/D)
- This will occur even if Reset pushbutton pressed.
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- 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
- Note:*
- Class 1E batteries will last 4 hrs.*
- LOT 201.21 Containment Isolation*
- *
What causes a containment ventilation isolation (CVI) signal?
- No Permissives:*
- *SI**
- *Radiation - High (RT8012/RT8013) [1/2]**
- Manual:*
- *Containment Phase A [1/2]**
- (CP002/CP005)*
- *Containment Phase B [2/2 on 1/2]**
- (CP002/CP005)*
Reset located on CP022.
- Note:*
- Isolates Containment Normal and Supplemental Purge Systems and Containment Airborne Activity Monitor (RT-8011)*
- 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 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
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- 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*
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- LOT 201.30 Offsite Electrical*
- *
Which 13.8 kV switchgears are normally powered from the standby transformers while at power?
1G STBY Bus
2G STBY Bus
Loss of North Bus starts SDG 12
Loss of South Bus starts SDG 22
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- LOT 201.33 Non-Class DC*
- *
What powers the 48 VDC Battery Chargers?
MCC 1K2
MCC 1G8 (TSC DG)
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- 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
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Capacity: 70,000 gallons
- Note:*
- Will last for 7 days (≥ 60,500 gallons)*
- LOT 201.32 Non-Class 480V*
- *
What provides control power to load centers?
125 VDC Control Power
MCCs provide their own control power.
- LOT 201.33 Non-Class DC*
- *
What powers the 125VDC Bus 1B Battery Chargers?
MCC 1A5
MCC 1G8 (TSC DG)
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- LOT 201.34 Non-Class 1E Vital 120 VAC*
- *
What powers the 25 kVA 120V UPS panels (DP005/DP006)?
- Normal (Inverter):*
- *125VDC Bus 1B**
- Alternate (VRT):*
- *MCC 1J1 (DP005)**
- *MCC 1J2 (DP006)**
Note:
Unlike 20 kVA 120V UPS panels, the 25 kVA 120V UPS panels do NOT contain a rectifier.
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- 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
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Determined by looking at running RCFC inlet temperatures.
- 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
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- LOT 201.35 Non-Class DGs*
- *
What loads does the TSC DG supply?
ICS Computer
CVCS PDP
FHB IVC LTG XFMRs
- *RCB Equipment Hatch Hoist**
- Flex DG provides B/U power*
Emergency XFMR cooling fans
Feeds 4.16 kV LC 1W1 → MCC 1G8
- 16 kV / 1200 kW / 1800 RPM
* * *
- Note:*
- Auto Starts on loss of voltage, comes up to speed and closes breaker in 15 seconds*
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- 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*
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- LOT 201.35 Non-Class DGs*
- *
What loads does the Flex diesel supply?
- Normal:*
- *Flex RCS M/U Pumps**
- *Flex S/G M/U Pumps**
- *Flex SFP M/U Pumps**
- Backup:*
- *CVCS PDP**
- *RCB Equipment Hatch Hoist**
- B/U to TSC DG*
- *480V ESF LC and MCC**
Supplies 480V LC DP1000
480 V / 1000 kW / 1800 RPM
- Note:*
- Within 8 hours following an Extended Loss of AC Power (ELAP) the FLEX Diesel Generator will be running providing power to support SG make-up, RCS make-up, SFP make-up, and other functions in support of STP’s FLEX strategies.*
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- LOT 201.21 Containment Isolation*
- *
What will cause a Phase B CIS?
Containment Pressure - High 3 (9.5 psig) [2/4]
Manual [2/2 on 1/2] (CP002/CP005)
Reset located on CP002.
- Note:*
-
Initiates Containment Spray
- Manual initiation will only open valves (Must manually start pump)
- Isolates CCW to RCPs (6 Valves)
- LOT 201.21 Containment Isolation*
- *
Does charging isolate on a phase A containment isolation?
Yes
Seals do not isolate.
- 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.*
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- LOT 201.39 ESF DGs*
- *
What will auto start the standby jacket water pump?
- *≥ 540 RPM AND < 6 psig header pressure**
- Blocked for 20 sec on S/U*
Once started must manually secure pump
Powered: Class 1E 480V MCC
- Same as standby LO pump
- LOT 201.39 ESF DGs*
- *
What jacket water temperature will make the ESF DGs INOPERABLE?
< 100 ˚F
Lube Oil Temperature of < 100 ˚F will also make the ESF DG INOPERABLE
- LOT 201.01 RCB*
- *
What must IA header pressure to the airlock seals be in order to make the personnel airlock OPERABLE?
≥ 90 psig
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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 201.34 Non-Class 1E Vital 120 VAC*
- *
What powers the 45 kVA 120V UPS Panels (DP003/DP004)?
- Normal (VRT):*
- *MCC 1L1 (DP003)**
- *MCC 1L2 (DP004)**
- B/U (VRT)*
- *MCC 1G8**
- Note:*
- 45 kVA 120V UPS Panels do NOT have rectifiers, inverters, or batteries. It’s backup is the TSC DG.*
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- LOT 201.36 Class 1E 4.16kV/480V*
- *
What colors correlate to the different Class 1E trains?
- Train A:*
- *Red**
- Same color as Channel I*
- Train B:*
- *Blue**
- Same color as Channel III*
- Train C:*
- *Yellow**
- Same color as Channel IV*
Channel II is White.
- 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.*
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- LOT 201.35 Non-Class DGs*
- *
How are the Non-Class DGs started?
- BOP / NTF / LTG:*
- *Two 24 VDC Electric Starting Motors**
- Rated for 10 Starts*
- Flex:*
- *One 24 VDC Electric Starting Motors**
- TSC:*
- *Air Driven Starting Motor (90 - 120 psig)**
- LOT 201.31 13.8 kV / 4.16 kV Electrical*
- *
Where is the SUFW powered from?
1H Standby Bus
- Note:*
- Unique b/c it is powered from the standby bus and NOT the aux bus.*
- LOT 201.32 Non-Class 480V*
- *
What MCCs are Non-Class, but are supplied by Class 1E MCCs?
1A5, 1B5, and 1C5
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They are shed during emergencies by the sequencer.
Located in EAB 10’ (1A5), EAB 35’ (1B5), EAB 60’ (1C5) in the pen space.
- 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 201.30 Offsite Electrical*
- *
What provides control power for the Main Generator Breaker?
TB 250VDC 1A
- Note:*
- Control power for the 13.8 kV breakers will come from either 125VDC Bus 1A or 1B. (Non-Class 125VDC busses)*
- LOT 202.16 SGBD*
- *
What will cause a BDS Isolation signal?
SGNR Level - Low 2 [2/4 on 1/4]
SI
AMSAC
P-4 w/ Source Range Blocked
Shuts BDS ORC valves. (All SGs)
Must be manually reset on CP006.
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- LOT 201.01 RCB*
- *
What will a containment pressure of ≥ 9.5 psig cause?
- Containment Pressure - High 3 (9.5 psig) [2/4]:*
- *Containment Spray Actuation**
- *Containment Isolation Phase B**
Uses PT-934, 935, 936, AND 937
- Note:*
- Containment Pressure - High and High 2 use PT-934, 935, and 936 ONLY*
- LOT 201.39 ESF DGs*
- *
What ESF DG pumps are engine driven?
Shaft Driven Lube Oil
Shaft Driven Fuel Oil
Shaft Driven Jacket Water
- *HP Fuel Injection Pumps**
- Driven off cam shaft*
- LOT 201.36 Class 1E 4.16kV/480V*
- *
What supplies power to the Non-Class 1E MCC’s 1A5/1B5/1C5?
- MCC 1A5:*
- *Class 1E MCC E1A4**
- MCC 1B5:*
- *Class 1E MCC E1B4**
- MCC 1C5:*
- *Class 1E MCC E1C4**
MCC’s are Non-Class powered by Class 1E
- Note:*
- Despite being odd number, Non-Class MCCs are powered by EVEN Class MCCs.*
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- 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.*
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- 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 201.01 RCB*
- *
Which containment radiation monitor(s) are/is covered by tech specs for RCS leak detection?
RCB Atmosphere Monitor RE-8011 (Particulate)
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LCO 3.4.6.1 RCS Leak detection
Applicable in MODES 1 - 4
- LOT 202.16 SGBD*
- *
What provides cooling for the BDS HXs?
Condensate
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- LOT 201.30 Offsite Electrical*
- *
What will happen in the switchyard if a fault occurs on the standby transformer?
- Unit 1:*
- *All North Side breakers will trip**
- Unit 2:*
- *All South Side breakers will trip**
- 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 201.39 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 201.39 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 201.34 Non-Class 1E Vital 120 VAC*
- *
What indications are available in the MCR for the Non-Class 1E Vital 120 VAC System?
- CP003*
- *DP048A Trouble (20 kVA)**
- *DP005 Trouble (25 kVA)**
- *DP006 Trouble (25 kVA)**
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No direct Control Room or ICS computer points for the 45 kVA system (DP003 and DP004). However, if DRPI (DP003) is lost we are susceptible to entering Tech Spec 3.0.3 condition.
- 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 201.01 RCB*
- *
What will a containment pressure of ≥ 3.0 psig cause?
Containment Pressure - High (3.0 psig) [2/3]
Safety Injection
Reactor Trip
Containment Isolation Phase A
Containment Ventilation Isolation
FW Isolation
- Containment Pressure - High 2 (3.0 psig) [2/3]*
- *SL Isolation**
Uses PT-934, 935, 936 ONLY
- Note:*
- Containment Pressure - High and High 2 are the exact same setpoint….*
- LOT 201.34 Non-Class 1E Vital 120 VAC*
- *
What powers the 20 kVA 120V UPS panels (DP048A)?
- Normal Power (Rectifier & Inverter):*
- *MCC 1F4**
- B/U DC (Inverter):*
- *125 VDC 1A**
- B/U AC (VRT):*
- *MCC 1G1**
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- LOT 202.33 RCB HVAC*
- *
What cools the RCFC AHUs?
- Normal:*
- *RCB Chilled Water**
- Emergency:*
- *CCW**
- 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 201.24 Post Accident Sampling*
- *
What does the post accident sampling system sample during post accident conditions?
- *RCS**
- *RHR/SI**
- *Containment Normal Sump**
- *Containment Air**
4 lines enter containment at 68’ FHB
OCIVs close on phase A CIS
- Note:*
- Liquid goes to PRT and Gas goes back to containment.*
- LOT 201.31 13.8 kV / 4.16 kV Electrical*
- *
What provides control power for the RCP breakers?
125 VDC Bus 1B
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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 202.16 SGBD*
- *
What will cause the BDS Flash Tank steam to re-align from FW HTRS 13A/13B to the main condenser?
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Turbine Trip
OR
High 2 level in FW HTR 13A AND 13B
High 2 level in one FW HTR will shut isolation valve for that FW HTR but steam will still be supplied to the other FW HTR.
- LOT 201.35 Non-Class DGs*
- *
What trips the Flex DGs?
- *Engine Overspeed**
- (1980 rpm)*
- *Lube Oil Pressure - Low**
- (73 psig)*
- *Cooling Water Temperature - High**
- (215°F)*
- *Coolant Level - Low**
- (sensor in upper portion of radiator)*
- *Engine Overcrank [Lockout]**
- (3 cycles)*
- LOT 203.25 ICS*
- *
Which color codes correlate to Priority 1 - Priority 4 alarms?
- Priority 1:*
- *Red**
- Priority 2:*
- *Magenta**
- Priority 3:*
- *Yellow**
- Priority 4:*
- *White**