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Flashcards in CCW Deck (16)
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0
Q

What are the Miscellaneous header CCW loads?

A
Post accident sample heat exchangers
Recip. charging pump
SFP HX
Waste gas compressor seal water HX.
RCP Seal water HX
Letdown HX
Excess letdown HX
Reactor support coolers
Main steam penetration coolers
BAE Evaporator condenser 
BAE Distillate coolers
BAE Vent condenser
RCP Thermal barrier
RCP Motor upper bearing oil cooler
RCP Motor Lower bearing oil cooler
CEQ fan motor cooler
1
Q

What happens to CCW during a Blackout sequence?

A

Operating pump trips
East and West pumps start
Standby HX outlet valves open

2
Q

What are the CCW Safeguard header loads?

A
RHR HX
RHR pump mechanical seal HX
CTS pump mechanical seal HX
SI Pump mechanical seal HX
SI Lube oil cooler
CCP Mechanical seal HX
CCP gear oil cooler
CCP Bearing oil cooler
3
Q

What happens to CCW on high radiation signal.

A

CRV-412 CCW Surge tank vent, Goes closed

4
Q

What are the CCW Pump auto starts?

A

Low header pressure @ 80 psig
SI
Blackout sequence

5
Q

What happens to CCW during a Phase A Isolation?

A

Reactor support coolers isolate
Excess letdown HX CCW Return valve closes
BAE supply closes
SFP HX CCW outlet closes

6
Q

What are the CCW pump trips?

A

Load shed
Overload
Over current

7
Q

What happens to CCW on a SI?

A

Both CCW pumps start.
Both CCW HX outlet valves open.
Both RHR HX CCW outlet valves throttle to 3000 gpm position.
Letdown HX CCW return valve close.

8
Q

When does the CCW valves to CEQ fans open?

A

1psi in containment.

9
Q

What happens to CCW on a phase B isolation?

A

CCW to the RCP loads isolate.

10
Q

What would an AEO duties be if we lost CCW?

A

CVCS cross-tie
CCW cross-tie
Gravity feed CCW to a CCP.

11
Q

What is the purpose of the CCW surge tank?

A

Provides net positive suction head.
Make up source by DW
Surge volume
Train separation

12
Q

On an SI what misc loads do you loose

A

Letdown HX

13
Q

On a phase A what misc. header loads do you loose.

A

SFP HX
Excess letdown HX
Reactor support coolers
NBAE

14
Q

What misc loads do you loose on a Phase B

A

RCP thermal barriers

RCP upper and lower oil coolers

15
Q

What loads do you have left after SI, phase A, and phase B?

A

Steam penetrations
CEQ fans
Seal water return HX
WGC