LOT 201.37 Class 1E 125VDC Flashcards
- LOT 201.37 Class 1E 125VDC*
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What is the maximum current and voltage that the class 1E battery chargers can output?
300 amps
- *140 VDC**
- Equalizing Charge is 135VDC - 137VDC*
- LOT 201.37 Class 1E 125VDC*
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Where are the components for the Class 1E 125VDC Train B (Channel III) physically located?
EAB 35’
- LOT 201.37 Class 1E 125VDC*
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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 201.37 Class 1E 125VDC*
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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 201.37 Class 1E 125VDC*
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Where are the components for the Class 1E 125VDC Train A (Channel I) and Train D (Channel II) physically located?
EAB 10’
- LOT 201.37 Class 1E 125VDC*
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What is the minimum Individual Cell Voltage (ICV) allowed on the Class 1E batteries?
2.07 VDC
LCO 3.8.2.3 Battery Parameters
Battery overall voltage must be ≥128.03 VDC to make battery OPERABLE. (59 cells x 2.17 avg volts/cell)
- LOT 201.37 Class 1E 125VDC*
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How long will the Class 1E batteries last on a loss of battery charger power?
4 hrs
- Note:*
- Non-Class batteries will only last 2 hrs.*
- LOT 201.37 Class 1E 125VDC*
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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 201.37 Class 1E 125VDC*
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What actions are required if one of the required Class 1E battery banks is inoperable while the plant is in MODE 1?
LCO 3.8.2 DC Sources Operating
Applicable in MODES 1 - 4
Action a:
Restore Inoperable battery bank [2 hrs]
OR
Apply CRMP [2 hrs]
OR
Be in MODE 3 [Next 6 hrs]
AND
Be in MODE 5 [Following 30 hrs]
- LOT 201.37 Class 1E 125VDC*
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Where are the components for the Class 1E 125VDC Train C (Channel IV) physically located?
EAB 60’
- LOT 201.37 Class 1E 125VDC*
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Where in the MCR is the indications for the Class 1E 125VDC system?
CP003
