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4604 > 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
  • ESW to CCW HX outlet valves go to pre-determined throttle position of approx 5500 gpm - CCW Hx outlet valves can be re-positioned with Ctrl Switch after they reach their SI preset position**
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8
Q

What happens with the ESW to CTS HX outlet valves on a SI with Phase B?

A
  • CTS HX outlet valves go to pre-determined throttle position of approx. 2400 gpm (CTS Signal with ICM-305 or 306 Recric Sump Valves open)- Don’t need it until on Recirc sump
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9
Q

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

A
  • Yes, it will 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 alt ESW supply to the EDG operated?

A
  • Manually only
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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 ESW room fan start?

A
  • 90°F
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15
Q

When will the selected ESW room fan start?

A
  • On an ESW 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- And once every 24 hrs on timer- Backwash for 2 minutes- Refill 1 minute
18
Q

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

A
  • 42#
19
Q

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

A
  • SI- Load Shed- Opposite unit SI
20
Q

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

A
  • U2 Train A ESW - U1 Train B ESW
21
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#
22
Q

When does the ESW normal supply to the EDGs automatically open, if they were not already open

A

When the EDG run relay energizes at 95% rated speed

23
Q

How do the ESW normal supply to the EDG valves fail on a loss of power

A

Fail as is

4604 (4 decks)

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