Shared Flashcard Set

Details

Heating, Ventilation and Air Conditioning (HVAC)
BWR Systems
28
Other
06/22/2012

Additional Other Flashcards

 


 

Cards

Term
HVAC

Describe fans with heating coils trip setpoint.
Definition
38F.
Term
HVAC

Describe the stages of a typical V-AC unit.
Definition
-Double inlet dampers (2 for secondary containment).
-Roll-o-matic filters.
-Cooling coil.
-Face and bypass dampers.
-Heating coil.
-Temperature element.
-Fan.
Term
HVAC

Describe the purpose of the HVAC syste.
Definition
-Control environmental conditions for equipment and personnel.
-Controlled flow and release.
-Flow path is always low areas to higher radioactive areas.
Term
HVAC

Describe the main supply fans.
Definition
-Known as the 10 fans (V-AC-10A/B).
-Normally both run.
-Have cooling coil trip.
-Trip on loss of Rx building exhaust fans (V-EF-24A/B).
-Supply lower areas in the Rx building.
-Powered by MCC-111/141.
-Exhaust into plenum.
Term
HVAC

Describe the concern with a loss of the main supply fans.
Definition
High steam chase temperature causing a Group I isolation.
Term
HVAC

Describe the Rx building exhaust fans.
Definition
-Know as the 24 fans (V-EF-24A/B).
-Normally 1 fan runs.
-Powered by MCC-111.
-RWCU discharges into suction of 24 fans.
-Exhaust into plenum.
Term
HVAC

Describe normal pressure in Rx building.
Definition
-Negative 0.25" H2O as compaired to atmosphere.
Term
HVAC

Describe the normal pressure in the exhaust plenum.
Definition
-Maintained at negative 0.5" H2O compaired to outside air.
Term
HVAC

Describe the plenum exhaust fans.
Definition
-(V-EF-20/21/22).
-Powered by MCC-132/132/122.
-Exhaust fans to Rx building vent stack.
-Fans are modulated to maintain exhaust plenum pressure.
Term
HVAC

Describe the exhaust plenum rad monitor setpoint.
Definition
26mrem/hr or downscale of .1mrem/hr.
Term
HVAC

Describe the refuel floor fans.
Definition
-Known as the 4 fans (V-AH-4A/B)
-Powered by MCC-132/122).
-Normally only 1 fan running.
-Trips on loss of refuel exhaust fan (V-EF-28).
-Safety related dampers fail closed on loss of air.
Term
HVAC

Describe the refuel floor rad monitor setpoint.
Definition
50mrem/hr or downscale of .1mrem/hr.
Term
HVAC

Describe the refuel floor exhaust fan.
Definition
-Known as the 28 fan (V-EF-28).
-Powered by MCC-132.
-If running and 4 fan is in auto, when flow is sensed the 4 fan will start.
-If lost the 4 fan will trip.
-Exhaust into plenum.
Term
HVAC

Describe the sample station exhaust fan.
Definition
-(V-EF-10).
-Powered by MCC-132.
-Exhausts into plenum.
Term
HVAC

Describe the rad waste vent line.
Definition
-Rad waste exhaust fans.
-Has 2 fans in rad waste (V-FU-1/2).
-Powered by MCC-111/141.
-Has heating coil trip.
-Discharges into plenum.
-Maintains rad waste at -0.25" H20.
-Interlocked with rad waste supply fans (V-MZ-3A/B).
Term
HVAC

Describe the cross-connect between 28 fan inlet and SBGT.
Definition
-Damper opens (V-D-42) pens to connect duct on V-EF-24/28 together for SBGT operations.
Term
HVAC

Describe the HPCI room alarms.
Definition
High temp: 97F.
Low temp: 65F.
Term
HVAC

Describe Rx building temp alarm.
Definition
130F.
Term
HVAC

Describe the ECCS room temp alarms and cooling supply.
Definition
-100F.
-SW is normal supply with ESW as b/u.
Term
HVAC

Describe the RCIC room temp alarm.
Definition
130F.
Term
HVAC

Describe the CRD pump room temp alarm and control.
Definition
-Alarms at 104F.
-Sw starts at 85F, second starts at 90F.
Term
HVAC

Describe recirc MG set room fans.
Definition
-(V-SF-3/4).
-Powered by MCC-133/122.
-Modulate to keep room at .25" H2O positive pressure.
Term
HVAC

Describe the sludge tank vent filter unit.
Definition
-Vent for RW tanks:
-Condensate phase, clean-up phase, spent resin, waste sludge.
Term
HVAC

Describe the SJAE fan.
Definition
-Known as the 26 fan (V-EF-26).
-Suctions from SJAE room exhaust to plenum and dilution air for SBGT.
-Normally runs.
-Powered by MCC-132.
-On SBGT initiation damper to SBGT isolates and directs to plenum.
Term
HVAC

Describe the cond/demin MVP room fan.
Definition
-Known as the 11 fan (V-EF-11).
-Powered by MCC-132.
-Normally runs.
-Suctions from cond/demin MVP room and exhausts to plenum or SBGT dilution air.
-SBGT initiation damper isolates to SBGT and aligns to plenum.
Term
HVAC

Describe the turbine building fans.
Definition
-(V-AH-1/2).
-Neither fan normally ran.
-Powered by MCC-121/142B.
-Both start when ceiling temp reaches 250F.
-At -0.2"H2O in plenum the fans trip and plenum room ceiling dampers shut.
Term
HVAC

Describe the EDG fans.
Definition
-(V-SF-9/10).
-Powered by 12EDG/11EDG.
-Start when EDG start signal or when bus is energized.
-EDG building suction dampers open then discharge shut and vice versa.
Term
HVAC

Describe the recombiner building exhaust fans.
Definition
-(C-1004A/B).
-Located in MVP room.
-Discharge to plenum.
-Fans trip on exhaust plenum press of -0.2"H2O.