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Memory Items > Turbine Trip Setpoints > Flashcards

Turbine Trip Setpoints Flashcards

1
Q

What is the Turbine Thrust Bearing Wear trip setpoint?

A

Greater than 48 Mils( 8 psig oil pressure)

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2
Q

What is the basis for the Turbine Thrust Bearing Wear trip signal?

A

Indicates Thrust Bearing failure

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3
Q

What is the Turbine Generator Lockout Relay trip setpoint?

A

86G

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4
Q

What is the basis for the Turbine Lockout Relay trip signal?

A

Prevent Turbine Overspeed on a sudden loss of load

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5
Q

What is the Turbine RCIC Initiation trip setpoint?

A

RCIC Initiation

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6
Q

What is the basis for the Turbine RCIC initiation trip signal?

A

Prevent damage to the Main Turbine caused by carryover from the Reactor

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7
Q

What is the Turbine Overspeed Mechanical trip setpoint?

A

110%( 1980 rpm)

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8
Q

What is the basis for the Turbine Overspeed Mechanical trip signal?

A

Prevent damage to the Turbine Blades

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9
Q

What is the Turbine Overspeed Backup trip signal?

A

110.5%( 105% in Standby)

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10
Q

What is the basis for the Turbine Overspeed Backup trip signal?

A

Backup to Mechanical Overspeed Trip

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11
Q

What are the two Manual trips for the Main Turbine?

A

1) Manual Pushbutton 2) Manual Trip Lever at the Front Standard

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12
Q

What is the Turbine High RPV Level trip setpoint?

A

Level 8( 219 inches)

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13
Q

What is the basis for the Turbine High RPV Level trip signal?

A

Prevent damage to the Main Turbine caused by carryover from the Reactor

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14
Q

What is the Turbine High Vibration trip setpoint?

A

12 Mils

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15
Q

What is the basis for the Turbine High Vibration trip signal?

A

Prevent loosened part damage - Indication of a severe problem

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16
Q

What is the Turbine High-High MSR Level trip setpoint?

A

1) 195 inches 1A/1B 2) 217 inches 2A/2B

17
Q

What is the basis for the Turbine High-High MSR Level trip signal?

A

Prevent moisture carryover to the Low Pressure Turbine

18
Q

What is the Turbine Loss of Stator Cooling Runback trip setpoint?

A

1) 81 degrees C at the Stator outlet 2) 42.5 psig at the Stator inlet

19
Q

What is the basis for the Turbine Loss of Stator Cooling Runback trip signal?

A

Prevent overheating of the Generator Stator Windings

20
Q

What is the Turbine Loss of 125 VDC trip setpoint?

A

Turbine less than 75% rated speed

21
Q

What type of trip signal is the Turbine Loss of 125 VDC(energize/de-energize)?

A

Loss of 125 VDC signal energizes to cause a trip

22
Q

What is the basis for the Turbine Loss of 125 VDC trip signal?

A

Loss of Control Power source

23
Q

What is the Turbine Loss of 24 VDC trip setpoint?

A

Loss of 24 VDC

24
Q

What is the basis for the Turbine Loss of 24 VDC trip signal?

A

Loss of Trip Power

25
Q

What is the Turbine Loss of Both Speed Signals trip setpoint?

A

Greater than 100 rpm

26
Q

What is the basis for the Turbine Loss of Both Speed Signals trip signal?

A

Loss of EHC reference greater than 100 rpm

27
Q

What is the Turbine Low Condenser Vacuum trip setpoint?

A

8.1 inches of Hg absolute

28
Q

What is the basis for the Turbine Low Condenser Vacuum trip signal?

A

Prevent damage due to overheating or water hammer

29
Q

What is the Turbine Low Bearing Oil Header Pressure trip setpoint?

A

12 psig

30
Q

What is the basis for the Turbine Low Bearing Oil Header Pressure trip signal?

A

Prevent bearing damage

31
Q

What is the Turbine Low EHC Fluid Pressure trip setpoint?

A

1100 psig

32
Q

What is the basis for the Turbine Low EHC Fluid Pressure trip signal?

A

Prevent loss of Turbine control

33
Q

What is the Turbine Low ETS Pressure trip setpoint?

A

400 psig

34
Q

What is the Turbine Low MSOP Discharge Pressure trip setpoint?

A

100 psig

35
Q

When is the Turbine Low MSOP Discharge Pressure trip signal active?

A

Greater than 75% rated Turbine speed

36
Q

What is the basis for the Turbine Low MSOP Discharge Pressure trip signal?

A

Indicates Main Shaft Oil Pump failure

37
Q

What are all of the Main Turbine trip signals?

A

1) Thrust Bearing Wear 2) Generator Lockout Relay 3) RCIC Initiation 4) Overspeed Mechanical 5) Overspeed Backup 6) Manual Trip Pushbutton 7) Manual Trip Lever 8) High RPV Level 9) High Vibration 10) High-High MSR Level 11) Loss of Stator Cooling Runback Failure 12) Loss of 125 VDC 13) Loss of 24 VDC 14) Loss of Both Speed Signals 15) Low Condenser Vacuum 16) Low Bearing Oil Header Pressure 17) Low EHC Fluid Pressure 18) Low ETS Pressure 19) Low MSOP Discharge Pressure

Memory Items (12 decks)

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