Term
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Definition
| Provide appropriate environmental conditions for personnel and plant equipment. Provide controlled flow direction and release of radioactive gases. |
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Term
| Big picture Reactor Building HVAC happenings when SBGT Initiation |
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Definition
Building supply fans trip off; Building exhaust fans trip off; Plenum exhaust fans trip off.
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Term
| "V-AC-4 power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| MCC-143; B RHR and Core Spray room; service water (FSW back-up); C-20 and ASDS panel. |
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Term
| "V-AC-5 power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| MCC-133; A RHR and Core Spray room; service water (FSW back-up); C-20 |
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Term
| "V-AC-6 power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| MCC-143; RCIC room; Service water only; C-20 |
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Term
| "V-AC-7A power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| "MCC-133; CRD pump area; service water; in AUTO, will start at 85 degrees F" |
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Term
| "V-AC-7B power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| "MCC-143; CRD pump area; service water; in AUTO, will start at 90 degrees F" |
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Term
| "V-AC-8A power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| "MCC-133; HPCI room; service water (FSW back-up); in AUTO, will start at 85 degrees F." |
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Term
| "V-AC-8B power supply, what it cools, what cools it, and where it can be initiated" |
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Definition
| "MCC-143; HPCI area; service water (FSW back-up); in AUTO, will start at 90 degrees F; NOTE: currently isolated as part of ESW load calculation. Fan will not start so as to not add heat to room." |
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Term
| "V-AC-10A/B job title, interlock?, auto isolate on SBGT?" |
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Definition
| Reactor Building Main supply fans; will not start unless V-EF-24A or V-EF-24B is running with flow established. Auto S/D on SBGT initiation. |
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Term
| "V-EF-24A/B job title, interlock?, auto isolate on SBGT?" |
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Definition
| Reactor Building Main exhaust fans; Main supply fans will not start unless one exhaust fan is running with flow established. |
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Term
| "V-AH-4A/B job title, interlock?, auto isolate on SBGT?" |
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Definition
| Refuel Floor Supply fans; Neither fan will start unless V-EF-28 is running with flow established; Auto S/D on SBGT initiation. |
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Term
| "V-EF-28 job title, interlock?, auto isolate on SBGT?" |
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Definition
| "Refuel Floor Exhaust fan (located in Plenum… draws from Fuel pool, dryer/separator pit, and/or vessel cavity); supply fans (V-AH-4A/B) will not run unless this fan is running and has developed flow. Auto S/D on SBGT initiation." |
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Term
| "V-SF-3 and V-SF-4 job title, interlock?, auto isolate on SBGT?" |
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Definition
| "Recirc MG set supply fans; With fan in AUTO, will start when either MG set is started (alternator swaps which fans start on successive starts); NO auto S/D" |
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Term
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Definition
| "Filters air in RWCU room; no direct S/D signal, but will trip on high duct pressure when SBGT initiates." |
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Term
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Definition
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Term
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Definition
| "Reactor building chiller; provides cooling to the following components: V-AC-10A/B, V-MZ-2, V-MZ-3, and V-CC-10." |
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Term
| "V-EF-20, V-EF-21, V-EF-22" |
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Definition
| Main Plant Exhaust system; takes suction from Reactor Building plenum and discharge to the atmosphere via Reactor Building Ventilation Stack. NOTE: the ventilation for all areas of the plant which have a potential for radioactive contamination is directed to the Plenum. AUTO S/D on SBGT initiation. |
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Term
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Definition
| "Turbine Deck Air Handlers; auto start when temperature sensors (on ceiling of turbine deck) reach 250 degrees F; NO direct trip on auto initiation of SBGT, HOWEVER, upon the associated trip of V-EF-20, -21, -22, Plenum pressure will go slightly positive which will cause a trip (-0.2 inch water column)." |
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Term
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Definition
| "Draws from SJAE room, exhausts to off-gas stack. EXHAUSTS TO PLENUM ON SBGT INITIATION. When not in service, V-EF-11 can draw off SJAE room." |
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Term
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Definition
| "Normally, draws from Cond-Demin/MVP room and exhausts to plenum room. Can also back-up V-EF-26 which draws from SJAE room and discharges to off-gas stack (dilution fan suction). DRAWS from SJAE room on auto initiation of SBGT." |
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Term
| Precaution associated with V-SF-3 and V-SF-4 |
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Definition
| Recirc MG Set supply fans; a sudden change in room temperature can set off fire deluge system. |
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Term
| Plant operating requirement associated with V-AC-4 and V-AC-5 |
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Definition
| "Required to be operable to support operability of RHR and Core Spray pumps. Also, must be started within 13 minutes of all three pumps running." |
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Term
| Plant operating requirement associated with V-SF-9 and V-SF-10 |
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Definition
| Required to be operable to consider respective Diesel Generator operable. |
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Term
| General precaution associated with starting V-EF-24 (w.r.t. V-AC-10A/B). |
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Definition
| V-AC-10A/B should be place in ON Prior to starting V-EF-24 (prevents drawing a large negative pressure in the Rx Building). The units will not start until V-EF-24 is started (prevents over pressurizing the Reactor building). |
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Term
| General precaution associated with starting V-EF-28 (w.r.t. V-AH-4A/B). |
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Definition
| "Either V-AH-4A OR V-AH-4B but not both, should be placed in ON prior to starting V-EF-28 to prevent drawing a large negative pressure in the Reactor Building." |
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Term
| General precaution associated with V-FU-5 (w.r.t. V-EF-24). |
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Definition
| "If both V-EF-24 fans are shutdown, V-FU-5 will shutdown due to high static pressure in the discharge duct of this fan. RESTART V-FU-5 after one of the V-EF-24 fans have been restarted." |
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