Term
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Definition
Maintain acceptable levels of temperature and cleanliness in the areas served to support operability under normal and accident conditions:
§64’ Switchgear Area
§84’ Switchgear Area
§78’ Electrical Penetration Area
§Ventilation Equipment (Chiller Room) 100’
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Term
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Definition
1.SPAV Maintains all areas served 65-110 °F when outside air temperature is 0-95 °F
2.Equipment Operability Upper Temperature Limit is 120°F for:
§64’ Switchgear Area
§84’ Switchgear Area
§78’ Electrical Penetration Area
3.Equipment Operability Upper Temperature Limit is 118°F for:
§100’ Chiller Room
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Term
| SPAV General Description... |
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Definition
Balanced supply and exhaust flows maintain temperature an keep the following areas at a slight positive pressure in relation to their surrounding areas:
§64’ Switchgear Room
§84’ Switchgear Room
§78’ Electrical Penetration Area
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100’ Chiller Room
§Pipe Gallery Exhaust Fan (84’)
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Term
Switchgear Supply Fan Intake |
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Definition
§31,000 scfm when system is aligned for mixed flow. Winter Mode
§75,000 scfm when system is aligned for fresh air only. Summer Mode
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Term
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Definition
ØControlled by Supply Fan Discharge Duct Temperature:
§Closed when <65°F
§Open when >75°F
§Modulate 65-75°F
ØDampers Fail OPEN on loss of air
ØDampers Fail to Modulate position on loss of power
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Term
Full Compliment of equipment,
as defined in S1/2.OP-SO.PC-0001 is: |
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Definition
4.§3 Switchgear Room Supply Fans
§2 Switchgear Room Exhaust Fans
§2 Electrical Penetration Room Exhaust Fans
§64’ Battery Room Exhaust Fan
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Term
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Definition
4.Required equipment for SPAV to meet the design basis is:
§2 Switchgear Area Supply Fans
§1 Switchgear Area Exhaust Fan
§1 Penetration Area Exhaust Fan
Therefore a Full Complement of equipment backed by an operable EDG* is required to support a single failure while in Modes 1-4.
*Except as specified in T.S. 3.8.1.1
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Term
| Roll-O-Matic Filter Assembly |
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Definition
ØLocated 100’ Chiller Room
ØTwo Filters
ØLocal Manual/Off/Automatic Toggle Switches
ØFilter advances on time and D/P when in Auto
ØMotors powered from:
§2A and 2B 230V Vital Ventilation Control Centers
ØFilter Motors Auto Stop when media is expended
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Term
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Definition
ØLocated 100’ Chiller Room above ECAC
ØControlled by Supply Fan Discharge Duct Temperature:
§Open when <65°F
§Closed when >75°F
§Modulate 65-75°F
ØDamper Fails CLOSED on loss of air
ØDampers Fail to Modulate position on loss of power
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Term
21,22,23 Switchgear Room Supply fans |
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Definition
ØThree 50% capacity fans
ØPowered from Vital 460v Bus
§21 – 2A 460v Bus
§22 – 2B 460v Bus
§23 – 2C 460v Bus
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Term
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Definition
ØNormally Operated from Control Room via maintained switch
§Two Fans Running
§One Fan Stopped
§Switch must be depressed for fan to start or stop
ØRespective SEC Starts 21 & 22
§23 is started if either 21 or 22 does not start (after a 30 sec TD)
ØFans can be started from local pushbutton on breaker
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Term
| 21,22,23 SGRSF Mode operations |
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Definition
ØSafeguard Start Signal
ØMode 1
§21 and 22 receive start signal
§If either fails to start then 30 seconds later 23 will receive start signal.
§Fan Control is locked out until SEC is reset.
ØMode 2, 3 or 4
§All fans are initially load shed and then operate as described above.
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Term
| Switchgear Room Return/Exhaust Fans |
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Definition
Two 100% Capacity Fans
§21 – 2A 460v Vital Bus
§22 – 2B 460v Vital Bus
Fans are operated from RP2 control switches
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Term
Which CAV units are locked open?
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Definition
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Term
| Switchgear Room Return/Exhaust Fans |
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Definition
Interlocks
§At least one Swgr Room Supply Fan must be in-service to run Swgr Room Exhaust Fan with switch position in Auto.
§21(11) auto start is delayed for 15 seconds to allow 22 to start and prevent two fans from running at the same time §Each fan can be started by the local pushbutton at breaker
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Term
what is the SPAV response fire? |
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Definition
SGSF in service
SG Return/exhaust fan in service
Cav 1 and 2 are open
Cav 6 Closes
Cav 7 exhausts outside |
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Term
| What is the motive force applied to operate the CAVs |
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Definition
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