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Module 8 Plant Service Systems > P42 CCW > Flashcards

P42 CCW Flashcards

1
Q

What are the CCW pump trips?

A

Undervoltage
ESF load shed
MPD

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2
Q

How big is CCW head tank and how much NPSH does it provide?

A

550 gallons

50psig

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3
Q

CCW What water feeds the surge tank?

A

P21 makeup water

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4
Q

CCW What level does the makeup open and close?

A

Open @ 2” closes @ 2’2”

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5
Q

What provides cooling water for CCW?

A

PSW

SSW “B” backup

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6
Q

When will the STBY CCW pump auto start?

A

<100psig discharge pressure

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7
Q

At what flow will CCW go into min/flow or recirc?

A

<1000gpm

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8
Q

What other major event occurs when CCW enters min/flow?

A

FPCCU heat exchangers isolate

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9
Q

What CCW pumps share the same logic?

A

“A” and “C”

“B” is alone

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10
Q

What are the loads of CCW?

A 
FPCCU pumps and heat exchangers
Drywell equipment drain sump coolers
RWCU non regen heat exchangers and pump coolers
CRD pumps
Recirc pumps, seals, and bearings
ADHR sample cooler
Post Accident Sample station
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11
Q

CCW What’s the makeup water to the head tank?

A

P21 makeup water

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12
Q

CCW What’s the makeup water to the chem-add tank?

A

CCW water

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13
Q

CCW What valves will auto isolate? What will close those valves?

A

Non-regen Heat exchanger closes on LSS “B” load shed

FPCCU isolates @ <1000gpm

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14
Q

Can the “B” pump be placed STBY after a LOCA? LOP?

A

LOCA-NO

LOP-YES

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15
Q

Can the pump be in STBY and running?

A

YES

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16
Q

How do you take a pump out of STBY?

A

Take hand switch to stop

17
Q

What are the power supplies to the CCW pump?

A

“A” 11
“B” 16
“C” 12

18
Q

Will CCW pump “B” auto start after a LSS sequence?

A

No, but can be manually started

19
Q

Will CCW ever auto isolate from the CTMT or Drywell?

A

No but can be manually isolated to contain leak

20
Q

How does the Inlet of the Non-regen heat exchanger fail?

A

Fail closed on a LOP

Module 8 Plant Service Systems (5 decks)

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