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Module 6 - Heat Removal Systems > N3402 - Main Turbine Lube Oil > Flashcards

N3402 - Main Turbine Lube Oil Flashcards

1
Q

What are the power supplies of the Aux oil pumps?

A

A - 13AD
B - 14AE
C - 14AE

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2
Q

What’s the poser supply for the DC Aux oil pump?

A

1DF

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3
Q

When will the Aux oil pumps Auto-start?

A

A and B < 95 psig

C < 90 psig

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4
Q

When will the DC oil pump Auto start?

A

< 22 psig

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5
Q

when will the shaft lift pump auto start?

A

< 510 rpm and > 15 rpm

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6
Q

when will the shaft lift pump auto-stop?

A

> 540 rpm

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7
Q

What RPM will the turning gear maintain the turbine at?

A

75 rpm without and seal steam or vacuum and 145 rpm with seal steam and vacuum in condenser

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8
Q

what are the purposes of the FE01 and FE02?

A

FE01 - maintain turbine spinning

FE02 - assists rollover for standstill

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9
Q

What are the auto open/close of the FE01/FE02?

A

FE01 - open: starts to open <= 210 rpm, full open <= 100 rpm
close: > 240 rpm or < 14.2 psig duplex outlet

FE02 - open: manual
close: > 15 rpm or < 14.2 psig duplex outlet

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10
Q

What’s the lube oil temperature maintained at?

A

113 deg F

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11
Q

What is the purpose of the main oil pump?

A

Provides full lubrication needs to main turbine

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12
Q

What’s the RPM of the turbine and discharge pressure it supplies?

A

approx 1750 rpm @ 130 psig

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13
Q

What’s the purpose of the booster pump?

A

supplies > 2200 gpm to suction of main oil pump

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14
Q

Where is the main oil pump?

A

Front bearing pedestal, attached to main turbine shaft

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15
Q

What cools the lube oil cooler?

A

TBCW

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16
Q

What’s the purpose of the duplex filter?

A

removes impurities from oil supplied to #2 bearing (combined journal and thrust bearing)

17
Q

Where else can the duplex filter be routed to?

A

to shaft lift pump via the FA20

18
Q

What are the Aux oil pump trips? (AC pumps)

A

MPD

Lube oil pressure > 140 psig

Module 6 - Heat Removal Systems (13 decks)

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