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LOT > 201.39 ESF Diesels > Flashcards

201.39 ESF Diesels Flashcards

1
Q
  • 201.39 ESF Diesels*
    • *

Function of ESF Diesels

A

Provides source of power to Class 1E busses following a Loss of Off-Site Power

Provides essential safety function by supplying ESF loads during DBA when normal power is unavailable

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2
Q
  • 201.39 ESF Diesels*
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Location of ESF DG controls, panels, components

A

D/G building

Remote D/G controls on CP-003

HVAC controls on CP-022

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3
Q
  • 201.39 ESF Diesels*
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ESF DG Design Basis

A

Capable of supplying sufficient power to perform Safe Reactor Shutdown from full power operation during normal Ops also, during and after a DBA.

Start and commence loading within 10 seconds on a LOOP

Seismic Category – Class 1

Normally inactive except during testing or emergency use.

Cooper-Bessemer

600 RPM

5500 KW

20 cylinder

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4
Q
  • 201.39 ESF Diesels*
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ESF DG Engine Driven Auxiliaries

A
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5
Q
  • 201.39 ESF Diesels*
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ESF DG Auxiliary Skid Equipment

A

Lube Oil Cooler

STBY Lube Oil Pump

Lube Oil Recirc Pump / Heater

Main Lube Oil Strainer

Jacket Water Standpipe

Jacket Water Cooler

STBY Jacket Water Pump

Jacket Water Circ Pump / Heater

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6
Q
  • 201.39 ESF Diesels*
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ESF DG Major External Equipment

A

Starting Air Compressors / Dryers

Starting Air Receivers

Intake Filter

Intake Silencer

Combustion Air Intake and Exhaust Piping

Exhaust Silencer

STBY D/G Fuel Oil Storage Tank

Fuel Oil Drain Tank

Fuel Oil Transfer Pump

STBY Fuel Oil Booster Pump

Engine Control panel

Generator Control panel

High Voltage Control panel

Grounding Reactor

Remote Control Panel (on CP-003)

Diesel Generator Building HVAC fans

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7
Q
  • 201.39 ESF Diesels*
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ESF D/G Fire Protection

A

Sprinkler Heads for Engine Compartment

Foam / Water Deluge for DGFOST

Automatic actuation on heat or smoke

Manual Actuation available from deluge valve enclosure (north of DGB in yard) or outside DGFOST room

Fire Protection Actuation will not preclude engine operation

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8
Q
  • 201.39 ESF Diesels*
    • *

Effect of Fire in one ESF DG on other DGs

A

No effect

Complete Train Seperation

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9
Q
  • 201.39 ESF Diesels*
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Location of ESF DG Fire Protection Foam Tank

A

55’ South side of DG room, normally accessed from ladder

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10
Q
  • 201.39 ESF Diesels*
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What will happen if ESF DG paralled with grid in isochronous mode?

A

Will not have any speed droop characteristics.

Will try to maintain constant speed regardless of the load on the generator.

Will become overloaded and cause damage and/or trip.

OR

It will shed all load and trip the output breaker on reverse power.

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11
Q
  • 201.39 ESF Diesels*
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ESF DG Electrical Ratings

A

5500 KW for 8760 hours run time ( 365 days)

5935 KW (108%) for 2000 hours run time (83 days)

6050 KW (110%) for 168 hours run time (7 days)

60 hz, synchronous 3 phase AC generator, at 0.8pf

Generator voltage limits are 3744 volts to 4576 volts. Nominal Generator voltage in automatic is 4160 volts.

Continuous rating of 6875 KVA at .8pf lagging

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12
Q
  • 201.39 ESF Diesels*
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ESF DG Exciter Ratings

A

96.7 - 181.2 Volts

40 KW

320 amps

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13
Q
  • 201.39 ESF Diesels*
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ESF DG STBY Fuel Oil Pump Auto Actions

A

With HS in Auto:

Auto Starts if engine speed < 540 RPM

OR

Fuel Pressure < 25 psig at filter inlet

STOPs when conditions met

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14
Q
  • 201.39 ESF Diesels*
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ESF DG Filter / Strainer / Supply Alarms

A

Filter D/P alarm at 10 psid

Strainer D/P alarm at 5 psid

Supply Header alarm at 10 psig

(all D/G Trouble on CP-003)

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15
Q
  • 201.39 ESF Diesels*
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Jacket Water 3-Way Thermostat

A

Modulates to maintain jacket water approx. 170 F.

< 165 all flow bypasses cooler

> 175 all flow through cooler

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16
Q
  • 201.39 ESF Diesels*
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Jacket Water Circ Pump / Heater

A

Controls Jacket Water Temp 120 - 130 F

17
Q
  • 201.39 ESF Diesels*
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Jacket Water Functions

A

Helps maintain engine temperature for quick starts to improve engine reliability.

Provide cooling for the engine internals during operation, using the ECW system as a heat sink.

18
Q
  • 201.39 ESF Diesels*
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STBY Jacket Water Pump Auto Start / Low Pressure Annunciator

A

6 psig

(blocked when speed < 540 rpm and reinstated 20 sec after DG start)

19
Q
  • 201.39 ESF Diesels*
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ECW

A

Provides heat sink for various closed loop systems on diesel

Turbo Charger Exhaust Air Inter Coolers (2) (275 gpm each)

Jacket Water Cooler (1) (625 gpm)

Lube Oil Cooler (1) (300 gpm)

20
Q
  • 201.39 ESF Diesels*
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Lube Oil 3-Way Thermostatic Control Valve

A

Modulates to maintain oil temp approx 160 F

< 155 all flow bypasses cooler

> 165 all flow through cooler

21
Q
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Lube Oil Circ Pump

A

Starts when DG speed < 280 rpm decreasing

22
Q
  • 201.39 ESF Diesels*
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Lube Oil System Functions

A

Cool and lubricate engine and generator bearings and other moving parts.

Helps maintain engine temperature for quick starts to improve engine reliability

23
Q
  • 201.39 ESF Diesels*
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Lube Oil Circ Heater

A

Controls to maintain oil temp 120 -130 F when circ pump running

24
Q
  • 201.39 ESF Diesels*
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STBY Lube Oil Pump Auto Start / Annunciator

A

35 psig

(blocked when DG speed < 540rpm and re-instated 20 sec after start)

25
Q
  • 201.39 ESF Diesels*
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Turbo Charger Lube Oil Pressure Control Valve

A

35 - 38.5 psig

26
Q
  • 201.39 ESF Diesels*
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STBY Fuel Oil Pump Auto Start

A

25 psig

(blocked < 540 rpm, reinstated 20 secs after start)

operates during start until > 540 rpm

27
Q
  • 201.39 ESF Diesels*
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Fuel Oil Low Pressure Annunciator

A

10 psig

(blocked < 540 rpm, reinstated 20 sec after start)

28
Q
  • 201.39 ESF Diesels*
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Describe the Intake Air Filter

A
  1. 5 ‘ tall
  2. 5’ diameter

oil bath filter ( 145 gal)

“D/G Trouble” Annunciator on CP-003 when D/P high

29
Q
  • 201.39 ESF Diesels*
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ESF D/G Interlocks

A

Any Emergency Mode Signal will place D/G in Isochronous mode with 600 rpm setpoint

Engine cannot be started with turning gear engaged (not fully disengaged). Two plungers must be depressed when turning gear is disengaged to allow start.

30
Q
  • 201.39 ESF Diesels*
    • *

DGB HVAC Functions

A

Normal Conditions

Maintain temps w/in design limits (-50 - 120 F)

Minimize dust levels

Provide continuous source of fresh air to DGFOST room

Emergency Conditions

Supply adequate air to maintain temps w/in design limits

31
Q
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DGB HVAC Louver Locations

A

Intake - South Wall of DGB 93’

Exhaust - Southern face of northern end of DGB 86’

32
Q
  • 201.39 ESF Diesels*
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DGB HVAC Damper Locations

A

Intake- south side stairwell 82’

Recirc - south side of stairwell 82’, in ducting

33
Q
  • 201.39 ESF Diesels*
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DGB HVAC Filter

A

South side of stairwell 82’

34
Q
  • 201.39 ESF Diesels*
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DGB HVAC Normal / Emergency / FOST Fan Locations

A

Normal - Southside of stairwell 82’, below ducting

Emergency - West side of stairwell 55’

FOST - exhaust plenum 74’, west wall

35
Q
  • 201.39 ESF Diesels*
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ESF DG Idle vs Rated Modes of Operaion

A

Idle - Accelerate to 280 rpm, ramp to 600 rpm 20-35secs, field flash at 540

Rated - Ramp to 600 w/in 10 sec, field flash at 178 secures at 540

36
Q
  • 201.39 ESF Diesels*
    • *

Tech Specs

A

3.8.1.1.b, 3.8.1.2.b, 3.8.1.3.b

Mode 1-4, 3 operable diesels

Mode 5 - 6 w/ <23 ft water above flange during refuel, 2 operable

Mode 6 >= 23 ft, 1 operable

All with 60,500 gallons of fuel

LOT (20 decks)

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