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RO34 - Revised and Upgraded Decks > NESW > Flashcards

NESW Flashcards

1
Q

What are the NESW pump trips?

A
  • Overload/Overcurrent
  • Load Shed (Seq back on)
  • Load Conservation (CTS)
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2
Q

What NESW pump autostarts do you get when the switch is in Auto?

A
  • Low Header Pressure 55 psig (60 psig U2) (only when control switch in Auto)
  • SI
  • Load Shed
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3
Q

Do the NESW pump discharge valves auto open on a manual start signal?

A

No, they have no auto features.
Must be manually opened after pump start.

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4
Q

If the NESW pump switch is in auto, how must the discharge valve be arranged?

A

It must be open.
It will NOT auto open when the pump starts.

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5
Q

How soon after a Load Conservation can a NESW pump be restarted and how is it done?

A

After 75 secs by taking the pump switch to trip/lockout and back to run

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6
Q

What are the NESW pump suction sources?

A

Both Units:
CW Intake Tunnel (Normal)
Discharge Tunnel (Alt)

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7
Q

What are the NESW pump power supplies?

A

11/21C (N NSEW Pump)
11/21B (S NESW Pump)

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8
Q

Which NESW header has the glycol loads on it?

A

Miscellaneous Header

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9
Q

When does WMO-906 (NESW Misc header supply valve) auto close?

A
  • On a Load Conservation
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10
Q

What does T.S. 3.6.3 B (Cnt Isolation Valves) state If 2 CIV’s are INOPERABLE?

A

WITHIN 1 hr:
Isolate penetration

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11
Q

Which valves isolate on a load shed in the NESW system and why?

A

L.O. cooler WRV’s close:
- maximizes flow the PAC, CAC, CLVs (If in Open Loop)
- lowers load on EDG by lowering load on NESW

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12
Q

Which unit’s NESW supplies Seal Oil Coolers?

A

Unit 2

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13
Q

Which unit’s NESW supplies the TSC Air conditioning?

A

Unit 1

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14
Q

When does the NESW header supply the Containment vent units, blowdown heat exchanger and blowdown sample heat exchanger?

A

When Containment Chill water is in Open Loop

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15
Q

What loads are on the NESW Misc Header?

A

- Glycol Chillers
- Ice Condenser Stuff
- Chem Cleaning Mix Tank
- MUP
- Plant Heating Boiler Blow Down Tank
- Misc Sealing and Cooling System
- TRS Neutralization Ring Header

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16
Q

What is cooled by the NESW Norm Header?

A
  • TSC Air Conditioning (U1)
  • Seal Oil Coolers (U2)
  • EHC Skid
  • MTLO Tank Coolers
  • MFP LO Coolers
  • PAC
  • CAC
  • Conductivity Room Sample
  • CHW Plate HX
  • CHW Solid Separators
17
Q

What NESW pump autostarts do you get when the switch is in neutral?

A
  • Load Shed
  • SI
18
Q

What is the most important load on the NESW Misc Header?

A

Glycol Chillers

19
Q

What has to be done in order to reset the Lube Oil Cooler WRVs after a load shed?

A

WRV Controllers have to be taken to minimum before you can push the reset button

20
Q

When do the LO Cooler WMOs get a close signal and when can they be operated after?

A

Load Conservation, they can be operated 75 sec after

21
Q

Which Containment Isolation Valves do NOT isolate on a Load Conservation?

A

Containment Lower Vent (CLV) Units

22
Q

Which Containment Isolation Valves isolate on a Load Conservation?

A
  • Containment Instrument Room (CIR) Vent Units
  • Containment Upper Vent (CUV) Units
  • RCP Motor Air Coolers (MACs)
23
Q

Where is the NESW Header Pressure sensed?

A

Downstream of the Strainer but before the Discharge check valve

24
Q

What occurs in the NESW System on a Load Conservation?

A

Isolates the following loads:
- Lube Oil MOVs
- CUV’s
- IR Vent Units
- MAC’s
Additionally,
-** Unit Crosstie Valve to Misc Header automatically closes (ie. Glycol)**
- NESW Pp trips W/CTS signal (Can be restarted after 75 sec by going to Trip/Lockout)

25
Q

What occurs in the NESW System on a Loadshed?

A
  • NESW Pp trips and Seq back on
  • L.O. cooler (WRV’s) close:which maximizes flow the PAC, CAC, CLVs
  • Lowers load on EDG by lowering load on NESW
26
Q

Which Containment NESW Load(s) DO NOT have Backup Air Bottle(s) for the CA to the NESW Cntmt Isol Valve(s)?

A

RCP Motor Air Coolers CIVs

27
Q

IF you have a CTS, then reset SI, NESW pumps which were NOT running prior to event will?

A

Restart unless locked out

RO34 - Revised and Upgraded Decks (84 decks)

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