Control Building (HJ) Flashcards

1
Q

What does control building HAVC provide occupied areas of Control Building ?

A

-Temperature
-Filtration
-Humidity
-Ventilation-indoor air quality

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2
Q

How does Control Building HVAC support equipment operability ?

A

-Temperature
-Filtration
-Ventilation-Hydrogen Control

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3
Q

What does Control Building provide for Control Room Complex following design basis ?

A

-Temperature
-Radiation control via filtration & positive pressurization
-Filtration
-Limits Rad Exposure Control Room Complex to 5REM whole body for duration of event

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4
Q

What major components do the Essential Control Building HAVC ?

A

-Control room essential AFUs
-ESF Switchgear Room Essentials AHUs
-ESF DC Equipment Room Essential AHUs
-ESF Battery Room Essential Exhaust Fans

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5
Q

What ESF signals will transfer Normal HVAC system to Essential HVAC system?

A

-LOP
-SIAS
-CRVIAS
-CREFAS
-High Radiation

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6
Q

What is Control Room Normal Supply AHU ?

A

Outside air flows into mixing box of the Control Room Norm. Supply AHU where it mixes with return air from Control Room Complex,Inverter Room,& communications equipment room

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7
Q

Where does ESF Battery Room Normal Exhaust Fans exhaust too?

A

ESF Battery Rooms are exhausted to outside atmosphere to exhaust combustible gases

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8
Q

When does Control Building Normal Smoke Exhaust Fan turn on ?

A

-Smoke Purge Exhaust Fan is operated after fire is extinguished to exhaust smoke

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9
Q

Where are the Control Building Normal Smoke Exhaust Fan dampers controlled from ? What happens to Normal HVAC system ?

A

-The dampers are positioned from Control Room so only one floor is exhausted at a time
-Normal HVAC is blocked to prevent smoke from spreading to other floors

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10
Q

What is used as makeup air during Smoke Purging Operation ?

A

Outside is introduced to Control Building during Smoke Purging Operations

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11
Q

How does the ESF Switchgear NORMAL Supply AHU work ?

A

Draws air from ‘A’ & ‘B’ class switchgear rooms & discharges cool air back to switchgear room & ALL four ESF DC Equipment Rooms

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12
Q

How does Microwave Room HVAC work ?

A

Microwave Room has supplement air conditioning that recirculates & cools air in the room

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13
Q

How does the 160’ Battery Room work?

A

Battery room exhaust fan draws air from Microwave Room,pulls it through Battery Room & exhaust it outdoors

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14
Q

How does Elevator Equipment Room Normal Exhaust Fan work ?

A

Elevator Equipment Room is cooled by Exhaust Fan, which draws outside air through room & exhausts it outside

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15
Q

What dampers close to isolate for all ESFAS signals ?

A

-Return air from Control Room Complex to Control Room Norm. AHU
-Control Room Norm. Supply AHU discharge
-Supply & return air
Inverter Room
Communication Equipment Room
-Control room Norm. Smoke Exhaust Fan & outside air makeup for Control Room Complex

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16
Q

For either Loss of Power or SIAS what happens to Switchgear Room Norm. AHU ?

A

Dampers close to isolate ESF Switchgear Room Norm. AHU discharge

17
Q

What happens to all normal AHUs during a SIAS ?

A

-Control Building Norm. Supply AHU is removed from service
-Control Room Normal AHU is removed from service
-ESF Switchgear Room Normal AHU is removed from service

18
Q

What happens on a CREFAS?

A

-Outside air drawn through separate inlet ductwork & mixed with return air from Control Room Complex
-Air is filtered & cooled, & supplies Control Room Complex
-Control Room Complex maintained positively pressurized

19
Q

What happens to CRVIAS ?

A

-Dampers close to isolate outside air
-Return air from CR complex is cooled by Essential AHU & sent back to CR Complex
-Bathroom & Kitchen Exhaust Fan secured
-CR Complex maintained at neutral pressure

20
Q

What is the precondition outside air mixed with inside the Control Room Normal Supply AHU mixing box?

A

Mixes with the return air from:
-Control room Complex
-Inverter Room
-Communications Equip. Room

21
Q

What does the preconditioned air in the Control Building Normal Supply ACU mix with in the mixing box ?

A

Mixes with return air from:
-Control Building Basement
-ESF Switchgear Rooms
-ESF DC Equip. Rooms
-Lower Cables Spreading Room
-Upper Cable Spreading Room

22
Q

What does the conditioned air for the Control Building Normal Supply AHU discharge too ?

A

-Control Building Basement
-ESF Battery Room
-Remote Shutdown Room
-Lower Cable Spreading Room
-Inverter Room
-Upper Cable Spreading Room
-Microwave Room
-Control Building Corridors

23
Q

Where does a small amount of air flow from Essential Switchgear Room into what rooms ? ?

A

-ESF DC Equip. Room through fire dampers
-ESF Battery Room through doors

24
Q

What does the Essential AFUs do during a LOP, SIAS, or CREFAS?

A

-Outside air drawn in & mixed with return air form Control Room Complex
-Air is filtered & cooled supplied to Control Room Complex
-Control Room Complex positively pressurized

25
Q

What do the Essential AFU do during CRVIAS ?

A

-Dampers close to isolate outside air intake from Control Room Complex
-Return air from Control Room Complex filtered & cooled & recirculated back through
-Bathroom & Kitchen exhaust fans secured
-Control Complex at Neutral Pressure

26
Q

What will ESF Switchgear Room Essential AHU do during a LOP or SIAS ?

A

-ESF DC Equip. Room filtered & cooled by AHU
-Supplies air to
ESF Switchgear Rooms
ESF Battery Rooms
Remote Shutdown Room
DC Equip. Room receives air from Switchgear Room via fire dampers

27
Q

What does the ESF DC Equipment Room Essential AHU do during a LOP or SIAS ?

A

-Air is drawn from ESF Switchgear rooms & cooled
-Air is supplied back to ESF Switchgear Room & DC Equipment Room

28
Q

What will happen to Essential Room Essential Exhaust Fans do during a LOP or SIAS ? When will Normal Battery exhaust fans turn off ?

A

-ESF Battery room exhausts outside
-Normal battery exhaust turns off when Essential Exhaust turns on, based on high DP across Essential Exhaust Fan

29
Q

Where does the Air Washer do ?

A

Air washer spray DS water into Air Inlet air stream to the Control Building Outside Air Normal AHU cools

30
Q

Where does the Normal Air Handling Unit provide cooled outside air to ?

A

-Control Building Normal Supply AHU
-Control Room Normal Supply AHU

31
Q

When does Control Building Air Washer start ?

A

Starts when Control Room Normal AHU fan starts or Control Building Normal AHU fan starts

32
Q

What is the float valve used for in the Air Washer ?

A

-Air Washer Sump is maintained by float valve
-If level is to high it will automatically drain to overflow line to Control Building floor drain

33
Q

What cooling water is being sent through Control Building AHU cooling coil ?

A

Normal chilled water

34
Q

What does the Control Building Normal AHU consist of ?

A

-High Efficiency Air Filter
-Cooling Coil
-Fan

35
Q

What will happen to Control Building Normal Return Suction Duct during a LOP or SIAS ? What kind of interlock does the suction damper have ?

A

Return duct to Control Building Norm AHU will be isolated, damper is interlocked with AHU fan breaker. When damper closes the fan will turn off

36
Q

Since Control Room Normal AHU shares ductwork with Essential Control Room AHU, what ESFAS signals will isolate discharge duct work ?

A

-CREFAS
-CRVIAS
-LOP
-SIAS

37
Q

Who starts & stops the Control Room Essential AFUs ?

A

Manually started/stopped from control room

38
Q

What ESFAS signals will automatically start Control Room Essential AFUs ? What will happen if a train has a LOP?

A

-CREFAS
-CRVIAS
-SIAS
-CSAS
-LOP will only start respective train