CCW Flashcards
What are the Miscellaneous header CCW loads?
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
What happens to CCW during a Blackout sequence?
Operating pump trips
East and West pumps start
Standby HX outlet valves open
What are the CCW Safeguard header loads?
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
What happens to CCW on high radiation signal.
CRV-412 CCW Surge tank vent, Goes closed
What are the CCW Pump auto starts?
Low header pressure @ 80 psig
SI
Blackout sequence
What happens to CCW during a Phase A Isolation?
Reactor support coolers isolate
Excess letdown HX CCW Return valve closes
BAE supply closes
SFP HX CCW outlet closes
What are the CCW pump trips?
Load shed
Overload
Over current
What happens to CCW on a SI?
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.
When does the CCW valves to CEQ fans open?
1psi in containment.
What happens to CCW on a phase B isolation?
CCW to the RCP loads isolate.
What would an AEO duties be if we lost CCW?
CVCS cross-tie
CCW cross-tie
Gravity feed CCW to a CCP.
What is the purpose of the CCW surge tank?
Provides net positive suction head.
Make up source by DW
Surge volume
Train separation
On an SI what misc loads do you loose
Letdown HX
On a phase A what misc. header loads do you loose.
SFP HX
Excess letdown HX
Reactor support coolers
NBAE
What misc loads do you loose on a Phase B
RCP thermal barriers
RCP upper and lower oil coolers
