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RO34 - Revised and Upgraded Decks > ESW > Flashcards

ESW Flashcards

1
Q

What are the ESW pump auto starts with pump switch in auto?

A
  • Low Header Pressure < 40# (only in Auto)
  • SI- Load Shed
  • Opposite unit SI
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2
Q

Will the ESW pump discharge valves automatically open on an auto ESW pump start?

A

Yes

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3
Q

Will the ESW pump discharge valves automatically open on a manual pump start?

A

Yes

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4
Q

Will the ESW discharge valve auto close on a trip?

A

No, they have no automatic closure function

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5
Q

What are the ESW pump trips?

A
  • Load Shed
  • Overload/Overcurrent
  • Manual
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6
Q

What are the ESW pump power supplies?

A
  • T11/21D East Pump
  • T11/21A West Pump
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7
Q

What happens with the ESW to CCW HX outlet valves on a SI?

A

Go to pre-determined throttle position of approx 5000 gpm

can be re-positioned with Ctrl Switch after they reach preset position

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8
Q

What happens with the ESW to CTS HX outlet valves on a with a cts signal and on recirc sump?

A

After on recirc sump, Go to pre-determined throttle position of approx. 2400 gpm

(CTS Signal with ICM-305 or 306 Recric Sump Valves open)

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9
Q

Will opening the alternate ESW supply to the EDG cause the EDG to be inoperable?

A

Yes, because if you were to have a single failure, you have the potential to lose both trains of cooling

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10
Q

How is the alternate ESW supply to the EDG operated?

A

Manually

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11
Q

Which ESW header has the TDAFP emergency suction supply?

A

West Header

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12
Q

Which ESW header has the E MDAFP emergency suction supply?

A

East Header

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13
Q

Which ESW header has the W MDAFP emergency suction supply?

A

East Header

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14
Q

At what temp will the standby (even numbered) ESW room fan start?

A

90°F

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15
Q

When will the odd numbered ESW room fan start?

A

On the pump Start

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16
Q

Which units CA supplies both units ESW backwash strainer?

A

Unit 1

17
Q

Describe the Auto actions of the ESW Pp Disch Strainer?

A

Automatic backwash of strainers:
- at 86.5” H2O DP
- every 24 hrs on timer

18
Q

What is the max UHS Temp for Unit 1 and Unit 2 per TS 3.7.9?

A

86.9°F

19
Q

At what pressure will the Backup Air Bottles start taking over at for the ESW strainer backwash valves?

A

42#

20
Q

What are the ESW pump auto starts with pump switch in neutral?

A
  • SI
  • Load Shed
  • Opposite unit SI
21
Q

If you get a Unit 2 Train A only SI, what ESW pump(s) will get an auto start signal?

A
  • U2 East ESW Pump
  • U1 W ESW Pump
22
Q

You have the ESW crossties open with both units E ESW pumps running and both W ESW pumps in standby. If your E ESW pump on Unit 1 trips out on instantaneous overcurrent, what will happen?

A

U2 W ESW pump will start on Low header pressure @ 40#

23
Q

Is the auto start function of the ESW pump from a SI required for Operability?

A

YES!!! PER SR 3.7.8.3

RO34 - Revised and Upgraded Decks (84 decks)

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