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{{#Wiki_filter:ATTACHMENT 2AEP:NRC'0372
{{#Wiki_filter:ATTACHMENT 2 AEP:NRC'0372
~~8X.O5290Pgq CHANGENO......'I'EP'NRC:0372 ELECTRICAL POWERSYSTEMSD.C.DISTRIBUTION
~~8X.O 5 29 0 Pgq CHANGE NO......'I'EP'NRC:0372 ELECTRICAL POWER SYSTEMS D.C.DISTRIBUTION
-OPERATING LIMITINGCONDITION fOROPERATION TRAINABconsisting of250-voltD.C.busAB,250-voltD.C.batterybankAB,andafullcapacitycharger.TRAINCDconsisting of250-voltD.C.busCD,250-voltD.C.batteryadpacitycharger.bnkCD,anafullcaAPPLICABILITY:
-OPERATING LIMITING CONDITION fOR OPERATION TRAIN AB consisting of 250-volt D.C.bus AB, 250-volt D.C.battery bank AB, and a full capacity charger.TRAIN CD consisting of 250-volt D.C.bus CD, 250-volt D.C.battery a d pacity charger.b nk CD, an a full ca APPLICABILITY:
-MODES1,2,3and4.ACT'tON:3.8.2.3Thefollowing D.C.bustrainsshallbeenergized andOPERABLEwithtiebreakersbetweenbustrainsopen:a.With250-voltD.C.businoperable, restoretheinoperable bustoOPERABLEstatuswithin2hoursorbeinatleastHOTSTANDBYwithinthenext6hoursandinCOLDSHUTDOWNwithintne,following 30hours..Withone250-voltD.C.batteryand/oritschargerinoperable, restoretheinoperable batteryand/orchargertoOPERABLEstatuswithin2hoursorbeinatleastHOTSTANDBYwithinthenext6hoursandinCOLDSHUTDOWNwithinthefollowing 30hours.SURVEILLANCE REUIREMENTS 4.8.2.3.1 EachO.C'.bustrainshallbedetermined OPERABLEandenergized withtiebreakersopenatleastonceper7daysbyverifying correctbreakeralignment andindicated poweravailability.
-MODES 1, 2, 3 and 4.ACT't ON: 3.8.2.3 The following D.C.bus trains shall be energized and OPERABLE with tie breakers between bus trains open: a.With 250-volt D.C.bus inoperable, restore the inoperable bus to OPERABLE status within 2 hours or be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within tne, following 30 hours..With one 250-volt D.C.battery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERABLE status within 2 hours or be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within the following 30 hours.SURVEILLANCE RE UIREMENTS 4.8.2.3.1 Each O.C'.bus train shall be determined OPERABLE and energized with tie breakers open at least once per 7 days by verifying correct breaker alignment and indicated power availability.
4.8.2.3.2 Each.250-voltbatterybankandchargershallbedemonstrated OPERABLE'.
4.8.2.3.2 Each.250-volt battery bank and charger shall be demonstrated OPERABLE'.
a.Atleastonceper7'aysbyverifying that:1.Theelectrolyte levelofeachpilotcellisbetweentheminimumand,maximumlevelindication marks,0.C.COOK-UNIT13/48-8 CHANGENO....,.2AEP:NRC:0372 ELECTRICAL POMERSYSTEMSSURVEILLANCE REQUIRBIENTS (Continued) b.2.Thepilotcellspecificgravity,corrected to77'Fandfullelectrolyte level,is>1.200,3.Thepilotcellvoltageis>2.10volts,and4.Theoverallbatteryvoltageis>250volts.Atleastonceper92daysbyverifying that:.r1.Thevoltageofeachconnected cellis>2.10voltsunderfloatchargeandhasnotdecreased morethan0F05voltsfromthevalueobservedduringtheoriginalacceptance test,2.Thespecificgra'vity, corrected to70'Fandfullelectro-lytelevel,ofeachconnected cellis>1;200andhasnotdecreased morethan0.03fromthevalueobservedduringtheprevioustest,and3.Theelectrolyte levelofeachconnected cellisbetweentheminimumandmaximumlevelindication marks.cod;Atleastonceper18monthsbyverifying that:1.Thecells,cellplatesandbatteryracksshownovisualindication ofphysicaldamageorabnormaldeterioration.
a.At least once per 7'ays by verifying that: 1.The electrolyte level of each pilot cell is between the minimum and, maximum level indication marks, 0.C.COOK-UNIT 1 3/4 8-8 CHANGE NO....,.2 AEP:NRC:0372 ELECTRICAL POMER SYSTEMS SURVEILLANCE REQUIRBIENTS (Continued) b.2.The pilot cell specific gravity, corrected to 77'F and full electrolyte level, is>1.200, 3.The pilot cell voltage is>2.10 volts, and 4.The overall battery voltage is>250 volts.At least once per 92 days by verifying that:.r 1.The voltage of each connected cell is>2.10 volts under float charge and has not decreased more than 0 F 05 volts from the value observed during the original acceptance test, 2.The specific gra'vity, corrected to 70'F and full electro-lyte level, of each connected cell is>1;200 and has not decreased more than 0.03 from the value observed during the previous test, and 3.The electrolyte level of each connected cell is between the minimum and maximum level indication marks.co d;At least once per 18 months by verifying that: 1.The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.
2.Thecell-to-cell andterminalconnections areclean,tight,andcoatedwithanti-corrosion material.
2.The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.3.The battery-charger will supply at least 140 amperes at>250 volts for at least 4 hours.At least, once per 18 months, during shutdown, by verifying that the battery capaci ty is adequate to supply and main'tain in OPERABLE status the emergency loads for the specified times of Table 4.8-1Awith the battery charger disconnected.
3.Thebattery-chargerwillsupplyatleast140amperesat>250voltsforatleast4hours.Atleast,onceper18months,duringshutdown, byverifying thatthebatterycapacityisadequatetosupplyandmain'tain inOPERABLEstatustheemergency loadsforthespecified timesofTable4.8-1Awith thebatterychargerdisconnected.
The battery terminal voltage shall be maintained
Thebatteryterminalvoltageshallbemaintained
>210 volts throughout the entire test.e.At least once per SO months, during shutdown, by verifying that the battery capacity is at least 805 of the manufacturer's rating when subjected to a performance discharge test.This performance discharge test shall be performed subsequent to the satisfactory completion of the required battery service test..C.COOK-UNIT 2 3/4 8-9 TABLE 4.8-1A BATTERY EMERGENCY LOAOS AB Batter Loads.Minimum Time 1.Channel I II static inverter*2.Channel I V static i nverter*3.Computer s ta ti c inverter*4.BOP static inverter" 5.Feed pump turbine 2E oil pump 6.Control room emergency lighting 7.Hain turbine oil pump"E" 8.Isolation valve control 9.All contrnl circuits 3 hrs 3 hrs 3 hrs'hrs 1 hr 8 hrs 3 hrs 8 hrs 8 hrs 1: Channel I static inverter*2.Channel II static inverter*3.Feed, pump turbine 2M oil pump 4.Generator seal oil pump 5.Hain turbine oil pump"M" 6.Isolation valves 3 hrs 3 hrs 1 hr 5 hrs 3 hrs'8 hrs 7.Annunciators 8.All control circuits 8 hrs*AC power sources to the inverters shall be turned.off at the start of the test and may be turned on at the end of the specified time interval.Inverters may be left in this operating mode for the duration of the discharge test.0.C.COOK-UNIT 2 3/4 8-10 CHANGE NO....., AEP:NRC:0372 I~~~l~I~w~r TABLE 1.2 FREQUENCY NOTATION NOTATION S SA S/U N.A.FREQUENCY At least once per 12 hours.At least once per 24 hours.At least once per 7 days.At least once per 31 days At least once per 92 days.At least once per 184 days..At least once per 549 days.Prior to each reactor startup.Not applicable.
>210voltsthroughout theentiretest.e.AtleastonceperSOmonths,duringshutdown, byverifying thatthebatterycapacityisatleast805ofthemanufacturer's ratingwhensubjected toaperformance discharge test.Thisperformance discharge testshallbeperformed subsequent tothesatisfactory completion oftherequiredbatteryservicetest..C.COOK-UNIT23/48-9 TABLE4.8-1ABATTERYEMERGENCY LOAOSABBatterLoads.MinimumTime1.ChannelIIIstaticinverter*
D.C.COOK-UNIT 1 1-7  
2.ChannelIVstaticinverter*3.Computerstaticinverter*
4.BOPstaticinverter" 5.Feedpumpturbine2Eoilpump6.Controlroomemergency lighting7.Hainturbineoilpump"E"8.Isolation valvecontrol9.Allcontrnlcircuits3hrs3hrs3hrs'hrs1hr8hrs3hrs8hrs8hrs1:ChannelIstaticinverter*
2.ChannelIIstaticinverter*
3.Feed,pumpturbine2Moilpump4.Generator sealoilpump5.Hainturbineoilpump"M"6.Isolation valves3hrs3hrs1hr5hrs3hrs'8hrs7.Annunciators 8.Allcontrolcircuits8hrs*ACpowersourcestotheinverters shallbeturned.off atthestartofthetestandmaybeturnedonattheendofthespecified timeinterval.
Inverters maybeleftinthisoperating modeforthedurationofthedischarge test.0.C.COOK-UNIT23/48-10 CHANGENO.....,AEP:NRC:0372 I~~~l~I~w~r TABLE1.2FREQUENCY NOTATIONNOTATIONSSAS/UN.A.FREQUENCY Atleastonceper12hours.Atleastonceper24hours.Atleastonceper7days.Atleastonceper31daysAtleastonceper92days.Atleastonceper184days..Atleastonceper549days.Priortoeachreactorstartup.Notapplicable.
D.C.COOK-UNIT11-7  


TABLE1.2FREUENCYNOTATIONNOTATIONSWQSAS/U:N.A.~FREUENCYAtleastonceper12hours.Atleastonceper24hours.Atleastonceper7days.Atleastonceper31daysAtleastonceper92days.Atleastonceper184days.Atleastonceper549days.Priortoeachreactorstartup.Notapplicable.
TABLE 1.2 FRE UENCY NOTATION NOTATION S W Q SA S/U: N.A.~FRE UENCY At least once per 12 hours.At least once per 24 hours.At least once per 7 days.At least once per 31 days At least once per 92 days.At least once per 184 days.At least once per 549 days.Prior to each reactor startup.Not applicable.
D.C.COOK-UNIT21-8h~eC CHANGENO.....,AEP:NRC'0372
D.C.COOK-UNIT 2 1-8 h~eC CHANGE NO....., AEP:NRC'0372
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IPOWERDISTRIBUTION LISACTION:(Continued)
I POWER DISTRIBUTION LI S ACTION: (Continued)
Ic)Surveillance testingoftheAPDMSmaybeperformedpursuanttoSpecification 4.3.3.7.1 providedtheindicated AFDismaintainedwithinthelimitsofFigure3.2-1.Atotalof6hoursofoperation maybeaccumulated withtheAFDoutsideofthetargetbandduringthistestingwithoutpenaltydeviation.
I c)Surveillance testing of the APDMS may be per formed pursuant to Specification 4.3.3.7.1 provided the indicated AFD is mai ntained within the limits of Figure 3.2-1.A total of 6 hours of operation may be accumulated with the AFD outside of the target band during this testing without penalty deviation.
b.,ERMALPOWERshallnotbeincreased above90%or0.9XAPLwhichever isless)ofRATEDTHERHALPOllERunlesstheindicated AFDiswithinthe5ÃtargetbandandACTION.2.a) 1),above'hasbeensatisfied.
b., ERMAL POWER shall not be increased above 90%or 0.9 X APL whichever is less)of RATED THERHAL POllER unless the indicated AFD is within the 5Ãtarget band and ACTION.2.a) 1), above'has been satisfied.
c.THERMALPOWERshallnotbeincreased above50KofRATEDTHERMALPOWERunlesstheindicated AFDhasnotbeenoutsideofthe~+5%targetbandformorethan1hourpenaltydeviation cumulative duringtheprevious24hours.d.Duringpowerreductions usingcontrolgods,thereporting require-mentsofSpecification 6.9.1.9shallnotapplyprovidedtheactionitemsabovearesatisifed..
c.THERMAL POWER shall not be increased above 50K of RATED THERMAL POWER unless the indicated AFD has not been outside of the~+5%target band for more than 1 hour penalty deviation cumulative during the previous 24 hours.d.During power reductions using control gods, the reporting require-ments of Specification 6.9.1.9 shall not apply provided the action items above are satisifed..
SURYEILLANCE REUIREMENTS J4.2.1.1Theindicated AXIALFLUXDIFFERENCE shallbedetermined tobewithinitslimitsduringPOWEROPERATION above15KofRATEDTHERMALPOWERby:a..Monitoring theindicated AFDforeachOPERABLEexcore.channel:
SURYEILLANCE RE UIREMENTS J 4.2.1.1 The indicated AXIAL FLUX DIFFERENCE shall be determined to be within its limits during POWER OPERATION above 15K of RATED THERMAL POWER by: a..Monitoring the indicated AFD for each OPERABLE excore.channel: At least once per 7 days when the AFD Monitor Alarm is'PERABLE, and 2., At least once per hour for the first 24 hours after restoring the AFD Monitor Alarm to OPERABLE status.b.Monitoring and logging the indicated AXIAL FLUX DIFFERENCE for each OPERABLE excore channel at least once per hour for the first 24 hours and at least once per 30 minutes thereafter,-
Atleastonceper7dayswhentheAFDMonitorAlarmis'PERABLE, and2.,Atleastonceperhourforthefirst24hoursafterrestoring theAFDMonitorAlarmtoOPERABLEstatus.b.Monitoring andloggingtheindicated AXIALFLUXDIFFERENCE foreachOPERABLEexcorechannelatleastonceperhourforthefirst24hoursandatleastonceper30minutesthereafter,-
when the AXIAL FLUX DIFFERENCE Monitor Alarm is INOPERABLE.
whentheAXIALFLUXDIFFERENCE MonitorAlarmisINOPERABLE.
The 1ogged values of the indicated AXIAL FLUX DIFFERENCE shall be.assumed to exist during the interval preceding each logging.~t 0.C.'.COOK UNIT 1 3/4 2-2 POWER DISTRIBUTION LI TS ACTION: (Continued) c)Surveillance testing of the APDMS may be performed pursuant to Specification 4.3.3.7.1 provided the indicated AFD is maintained within the limits of Figure 3.2-1.A total of 6 hours of operation may be accumulated with the AFD outside of the target band during this testing without penalty deviation.
The1oggedvaluesoftheindicated AXIALFLUXDIFFERENCE shallbe.assumedtoexistduringtheintervalpreceding eachlogging.~t0.C.'.COOKUNIT13/42-2 POWERDISTRIBUTION LITSACTION:(Continued) c)Surveillance testingoftheAPDMSmaybeperformed pursuanttoSpecification 4.3.3.7.1 providedtheindicated AFDismaintained withinthelimitsofFigure3.2-1.Atotalof6hoursofoperation maybeaccumulated withtheAFDoutsideofthetargetbandduringthistestingwithoutpenaltydeviation.
b.THERMAL POWER shall not be increased above 814 of RATED THERMAL POWER unless the indicated AFD is within the+5%target band and ACTION 2.a)1), above has been satisfied.
b.THERMALPOWERshallnotbeincreased above814ofRATEDTHERMALPOWERunlesstheindicated AFDiswithinthe+5%targetbandandACTION2.a)1),abovehasbeensatisfied.
C.THERMAL POWER shall not be increased above 50%of RATED THERMAL POWER unless the indicated AFD has not been outside of the+5%target band for more than 1 hour penalty deviation cumulative during the previous 24 hours.d.During power reductions using control, rods, the reporting require-ments of Specification 6.9.1.9 shall riot apply provided the action items above are satisifed.
C.THERMALPOWERshallnotbeincreased above50%ofRATEDTHERMALPOWERunlesstheindicated AFDhasnotbeenoutsideofthe+5%targetbandformorethan1hourpenaltydeviation cumulative duringtheprevious24hours.d.Duringpowerreductions usingcontrol,rods,thereporting require-mentsofSpecification 6.9.1.9shallriotapplyprovidedtheactionitemsabovearesatisifed.
SURVEILLANCE RE UIREMENTS 4.2.1.1 The indicated AXIAL FLUX DIFFERENCE shall be determined to be within its limits during POWER OPERATION above 15%of RATED THERMAL POWER by: a.Monitoring the indi cated AFD for each OPERABLE excore channel: l.At, least once per 7 days when the AFD Monitor Alarm is OPERABLE, and 2.At least once per hour for the first 24 hours after restoring the AFD Monitor Alarm to OPERABLE status.b.Monitoring and logging the indicated AXIAL FLUX DIFFERENCE for each OPERABLE excore channel at least once per hour for the first 24 hours and at least once per 30 minutes thereafter, when the AXIAL FLUX DIFFERENCE Monitor Alarm is INOPERABLE.
SURVEILLANCE REUIREMENTS 4.2.1.1Theindicated AXIALFLUXDIFFERENCE shallbedetermined tobewithinitslimitsduringPOWEROPERATION above15%ofRATEDTHERMALPOWERby:a.Monitoring theindicatedAFDforeachOPERABLEexcorechannel:l.At,leastonceper7dayswhentheAFDMonitorAlarmisOPERABLE, and2.Atleastonceperhourforthefirst24hoursafterrestoring theAFDMonitorAlarmtoOPERABLEstatus.b.Monitoring andloggingtheindicated AXIALFLUXDIFFERENCE foreachOPERABLEexcorechannelatleastonceperhourforthefirst24hoursandatleastonceper30minutesthereafter, whentheAXIALFLUXDIFFERENCE MonitorAlarmisINOPERABLE.
The logged values of the indicated AXIAL FLUX DIFFERENCE shall be assumed to exist during the interval preceding each logging.D.C.COOK UNIT 2 3/4 2-2 CHANGE NO.,-.AEP:NRC:0372 REACTIVITY CONTROL SYSTEMS CHARGING PUMP-SHUTDOMN LIMITING CONDITION FOR OPERATION 3.1.2.3 At least one charging pump in the boron injection flow path required by Specification 3.1.2.1 shall be OPERABLE and capable of being powered from an-OPERABLE emergency bus.APPLICABILITY:
Theloggedvaluesoftheindicated AXIALFLUXDIFFERENCE shallbeassumedtoexistduringtheintervalpreceding eachlogging.D.C.COOKUNIT23/42-2 CHANGENO.,-.AEP:NRC:0372 REACTIVITY CONTROLSYSTEMSCHARGINGPUMP-SHUTDOMNLIMITINGCONDITION FOROPERATION 3.1.2.3Atleastonechargingpumpintheboroninjection flowpathrequiredbySpecification 3.1.2.1shallbeOPERABLEandcapableofbeingpoweredfroman-OPERABLEemergency bus.APPLICABILITY:
MODES 5 and, 6.ACTION: With no charging pump OPERABLE, suspend all operations involving CORE ALTERATIONS or positive re~ctivity changes unti 1 one charging pump is restored to OPERABLE status.SURVEILLANCE REQUIREMENTS 4.1.2.3 At least the above required charging pump shall be demonstrated OPERABLE by verifying, that on recirculation flow, the pump develops a discharge pressure of>2390 psig when tested pursuant to Specification 4.0.5.D.C.'COOK-UNIT 2 3/4 1-11~~w s s~~/
MODES5and,6.ACTION:WithnochargingpumpOPERABLE, suspendalloperations involving COREALTERATIONS orpositivere~ctivity changesunti1onechargingpumpisrestoredtoOPERABLEstatus.SURVEILLANCE REQUIREMENTS 4.1.2.3Atleasttheaboverequiredchargingpumpshallbedemonstrated OPERABLEbyverifying, thatonrecirculation flow,thepumpdevelopsadischarge pressureof>2390psigwhentestedpursuanttoSpecification 4.0.5.D.C.'COOK-UNIT23/41-11~~wss~~/
CHANGE NO....., AEP:NRC:0372 CONTAIHMENT SYSTEMS CONTAIHMEHT AIR RECIRCULATION SYSTEMS LIMITIHG CONDITION FOR OPERATION 3.6.5.6 Two independent containment air recirculation systems shall be OPERABLE.APPLICABILITY:
CHANGENO.....,AEP:NRC:0372 CONTAIHMENT SYSTEMSCONTAIHMEHT AIRRECIRCULATION SYSTEMSLIMITIHGCONDITION FOROPERATION 3.6.5.6Twoindependent containment airrecirculation systemsshallbeOPERABLE.
MODES 1, 2, 3 and 4.ACTION: With one containment air recirculation system inoperable, restore the inoperable system to OPERABLE status within 72 hours or be in at least HOT STANDBY wi.thin the next 6 hours and in COLD SHUTDOWN within the following 30 hours.SURVEILLANCE REOUIREIMEHTS 4.6.5.6 Each containment air recirculation system shall be demonstrated OPERABLE at least once per 3 months on a STAGGERED TEST BASIS by: a.b.C.Verifying that the return air fan starts on an auto-start signal after a 10+1 minute delay and operates"or at least 15 minutes, Verifying that with the return air fan dampers closed, the fan , motor current is 56+10 amps when the fan speed is 880+20'PH, Verifying that with the fan off, the return air fan damoer opens when a force.of<ll lbs is applied to the counter-weight, and Verifying that the motor operated valve in the suction line co the containment's lower compartment opens after a 10+1 minute delay.0.C.COOK-UNIT 1 3/4 6-35 CONTAINMENT SYSTEMS CONTAINMENT AIR RECIRCULATION SYSTEMS LIMITING CONDITION FOR OPERATION 3.6.5.6 Two independent containment air recirculation systems shall be OP ERABLE.APPLICABILITY:
APPLICABILITY:
MODES 1, 2, 3 and 4.'I ACTION: With one containment air recirculation system in'operable,.restore.
MODES1,2,3and4.ACTION:Withonecontainment airrecirculation systeminoperable, restoretheinoperable systemtoOPERABLEstatuswithin72hoursorbeinatleastHOTSTANDBYwi.thinthenext6hoursandinCOLDSHUTDOWNwithinthefollowing 30hours.SURVEILLANCE REOUIREIMEHTS 4.6.5.6Eachcontainment airrecirculation systemshallbedemonstrated OPERABLEatleastonceper3monthsonaSTAGGERED TESTBASISby:a.b.C.Verifying thatthereturnairfanstartsonanauto-start signalaftera10+1minutedelayandoperates"oratleast15minutes,Verifying thatwiththereturnairfandampersclosed,thefan,motorcurrentis56+10ampswhenthefanspeedis880+20'PH,Verifying thatwiththefanoff,thereturnairfandamoeropenswhenaforce.of<lllbsisappliedtothecounter-weight,andVerifying thatthemotoroperatedvalveinthesuctionlinecothecontainment's lowercompartment opensaftera10+1minutedelay.0.C.COOK-UNIT 13/46-35 CONTAINMENT SYSTEMSCONTAINMENT AIRRECIRCULATION SYSTEMSLIMITINGCONDITION FOROPERATION 3.6.5.6Twoindependent containment airrecirculation systemsshallbeOPERABLE.APPLICABILITY:
the inoperable system to OPERABLE status within 48 hours or be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within the following 30 hours.SURVEILLANCE REOUIREMENTS 4.6.5.6 E'ach containment air recirculation system shall be demonstrated OPERABLE at least once per 92 days on a STAGGERED TEST BASIS by: Verifying that the return air fan starts on an auto-start signal after a 10+0/-1 minute delay and operates for at least 15 minutes.b.Ci d.Verifying that with the return air fan dampers closed, the fan motor current is 56+10 amps when the fan speed is 880+20 RPM.Verifying that with the fan off, the return air fan damper opens when a force of<ll lbs is applied to the counterweight.
MODES1,2,3and4.'IACTION:Withonecontainment airrecirculation systemin'operable,.restore.
Yerifyino that the motor operated valve in the, suction line to the containment's lower compartment opens after a 10+0/-1 minute delay..C.COOK'-UNIT 2.,',.3/4 6 44~Amendment Ho.1'C~
theinoperable systemtoOPERABLEstatuswithin48hoursorbeinatleastHOTSTANDBYwithinthenext6hoursandinCOLDSHUTDOWNwithinthefollowing 30hours.SURVEILLANCE REOUIREMENTS 4.6.5.6E'achcontainment airrecirculation systemshallbedemonstrated OPERABLEatleastonceper92daysonaSTAGGERED TESTBASISby:Verifying thatthereturnairfanstartsonanauto-start signalaftera10+0/-1minutedelayandoperatesforatleast15minutes.b.Cid.Verifying thatwiththereturnairfandampersclosed,thefanmotorcurrentis56+10ampswhenthefanspeedis880+20RPM.Verifying thatwiththefanoff,thereturnairfandamperopenswhenaforceof<lllbsisappliedtothecounterweight.
CHANGE N0..7...AEP:NRC:0372
Yerifyino thatthemotoroperatedvalveinthe,suctionlinetothecontainment's lowercompartment opensaftera10+0/-1minutedelay..C.COOK'-UNIT2.,',.3/4644~Amendment Ho.1'C~
CHANGEN0..7...AEP:NRC:0372
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~~FREACTIVITY CONTROLSYSTEI~)S BORATEDWATERSOURCES-SHUTOOWNLIHITINGCONOITION FOROPERATION 3.1.2.7.Asaminimum,oneofthefollowing boratedwatersourcesshall.beOPERABLE:,
~~F REACTIVITY CONTROL SYSTEI~)S BORATED WATER SOURCES-SHUTOOWN LIHITING CONOITION FOR OPERATION 3.1.2.7.As a minimum, one of the following borated water sources shall.be OPERABLE:, a.A bor ic acid storage system and associated heat tracing with: 1.A minimum conta.ined volume of 835 gallons,.Z.Between 20,000 and 22,500 ppm of boron, and b.3.A'inimum solution temperature of 145'F.The refueling water storage.tank with: 1.A minimum contained, volume of 9690 gallons, 2.~A minimum boron concentration of 1950 ppm, and 3.A.minimum solution temperature of 35'F.C APPLICABILITY!
a.Aboricacidstoragesystemandassociated heattracingwith:1.Aminimumconta.ined volumeof835gallons,.Z.Between20,000and22,500ppmofboron,andb.3.A'inimumsolutiontemperature of145'F.Therefueling waterstorage.tankwith:1.Aminimumcontained, volumeof9690gallons,2.~Aminimumboronconcentration of1950ppm,and3.A.minimum solutiontemperature of35'F.CAPPLICABILITY!
NOOES 5 and 6.ACTION: I With no borated water source OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least'ne borated water source is restored to OPERABLE status.SURVEILLANCE RE UIREMENTS 4.1.2.7'he above required borated water source shall be demonstrated OPERABLE:.a.At least once per 7 days by: l.Verifying the boron concentration of the water, 2.Verifying the water level of the tank, and 3.Verifying the boric acid'storage tank solution temperature when it is the source of borated water.b.At least once per 24 hours by verifying the RWST temperature wh'en it is the sou'rce of borated water and the outside air temperature is<35'F.0..C.COOK-UNIT 1 3/4 1-15 REACTIVITY CONTROL SYSTEMS BORATED WATER SOURCES-SHUTDOWN LIMITING CONDITION FOR OPERATION 3.1.2.7 As a.minimum, one of the following borated water sources shall be OPERABLE: a.A boric acid storage system and associated heat tracing with: l.A minimum contained borated water volume 835 gallons, 2.Between 20,000 and 22,500 ppm of boron, and 3.A minimum solution temperature of 145'F.b.The refueling water storage tank with: l.A minimum contained borated water volume of 9690 gallons, 2.A minimum boron concentration of'000 ppm, and''3.A minimum solution temperature of 35'F.APPLICABILITY:
NOOES5and6.ACTION:IWithnoboratedwatersourceOPERABLE, suspendalloperations involving COREALTERATIONS orpositivereactivity changesuntilatleast'neboratedwatersourceisrestoredtoOPERABLEstatus.SURVEILLANCE REUIREMENTS 4.1.2.7'he aboverequiredboratedwatersourceshallbedemonstrated OPERABLE:
MODES 5 and 6.ACTION: With no borated water source OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least one borated water source is restored to..OPERABLE status.SURVEILLANCE RE UIREMEHTS 4.1.2.7 The above required borated water source shall be demonstrated OPERABLE: a.At least once per 7 days by: l.Verifying the boron'oncentration of the water, 2.Verifying the contained borated water volume, and 3.Verifying the boric acid storage tank solution temperature when it is the source of borated water.b.At least once per 24 hours by verifying the RWST temperature when it is the source of borated water and the outside air temperature is<35'F.D.C.COOK-UNIT 2 3/4'>>15}}
.a.Atleastonceper7daysby:l.Verifying theboronconcentration ofthewater,2.Verifying thewaterlevelofthetank,and3.Verifying theboricacid'storagetanksolutiontemperature whenitisthesourceofboratedwater.b.Atleastonceper24hoursbyverifying theRWSTtemperature wh'enitisthesou'rceofboratedwaterandtheoutsideairtemperature is<35'F.0..C.COOK-UNIT13/41-15 REACTIVITY CONTROLSYSTEMSBORATEDWATERSOURCES-SHUTDOWNLIMITINGCONDITION FOROPERATION 3.1.2.7Asa.minimum,oneofthefollowing boratedwatersourcesshallbeOPERABLE:
a.Aboricacidstoragesystemandassociated heattracingwith:l.Aminimumcontained boratedwatervolume835gallons,2.Between20,000and22,500ppmofboron,and3.Aminimumsolutiontemperature of145'F.b.Therefueling waterstoragetankwith:l.Aminimumcontained boratedwatervolumeof9690gallons,2.Aminimumboronconcentration of'000ppm,and''3.Aminimumsolutiontemperature of35'F.APPLICABILITY:
MODES5and6.ACTION:WithnoboratedwatersourceOPERABLE, suspendalloperations involving COREALTERATIONS orpositivereactivity changesuntilatleastoneboratedwatersourceisrestoredto..OPERABLE status.SURVEILLANCE REUIREMEHTS 4.1.2.7Theaboverequiredboratedwatersourceshallbedemonstrated OPERABLE:
a.Atleastonceper7daysby:l.Verifying theboron'oncentration ofthewater,2.Verifying thecontained boratedwatervolume,and3.Verifying theboricacidstoragetanksolutiontemperature whenitisthesourceofboratedwater.b.Atleastonceper24hoursbyverifying theRWSTtemperature whenitisthesourceofboratedwaterandtheoutsideairtemperature is<35'F.D.C.COOK-UNIT23/4'>>15}}

Revision as of 08:28, 6 July 2018

Tech Specs 3.8.2.3,4.2.1.1,4.1.2.3,4.6.5.6,3.1.2.7 & 4.1.2.7 Re Surveillance
ML17331A729
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 05/26/1981
From:
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17331A728 List:
References
NUDOCS 8105290364
Download: ML17331A729 (23)


Text

ATTACHMENT 2 AEP:NRC'0372

~~8X.O 5 29 0 Pgq CHANGE NO......'I'EP'NRC:0372 ELECTRICAL POWER SYSTEMS D.C.DISTRIBUTION

-OPERATING LIMITING CONDITION fOR OPERATION TRAIN AB consisting of 250-volt D.C.bus AB, 250-volt D.C.battery bank AB, and a full capacity charger.TRAIN CD consisting of 250-volt D.C.bus CD, 250-volt D.C.battery a d pacity charger.b nk CD, an a full ca APPLICABILITY:

-MODES 1, 2, 3 and 4.ACT't ON: 3.8.2.3 The following D.C.bus trains shall be energized and OPERABLE with tie breakers between bus trains open: a.With 250-volt D.C.bus inoperable, restore the inoperable bus to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within tne, following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />..With one 250-volt D.C.battery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.SURVEILLANCE RE UIREMENTS 4.8.2.3.1 Each O.C'.bus train shall be determined OPERABLE and energized with tie breakers open at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.3.2 Each.250-volt battery bank and charger shall be demonstrated OPERABLE'.

a.At least once per 7'ays by verifying that: 1.The electrolyte level of each pilot cell is between the minimum and, maximum level indication marks, 0.C.COOK-UNIT 1 3/4 8-8 CHANGE NO....,.2 AEP:NRC:0372 ELECTRICAL POMER SYSTEMS SURVEILLANCE REQUIRBIENTS (Continued) b.2.The pilot cell specific gravity, corrected to 77'F and full electrolyte level, is>1.200, 3.The pilot cell voltage is>2.10 volts, and 4.The overall battery voltage is>250 volts.At least once per 92 days by verifying that:.r 1.The voltage of each connected cell is>2.10 volts under float charge and has not decreased more than 0 F 05 volts from the value observed during the original acceptance test, 2.The specific gra'vity, corrected to 70'F and full electro-lyte level, of each connected cell is>1;200 and has not decreased more than 0.03 from the value observed during the previous test, and 3.The electrolyte level of each connected cell is between the minimum and maximum level indication marks.co d;At least once per 18 months by verifying that: 1.The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2.The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.3.The battery-charger will supply at least 140 amperes at>250 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.At least, once per 18 months, during shutdown, by verifying that the battery capaci ty is adequate to supply and main'tain in OPERABLE status the emergency loads for the specified times of Table 4.8-1Awith the battery charger disconnected.

The battery terminal voltage shall be maintained

>210 volts throughout the entire test.e.At least once per SO months, during shutdown, by verifying that the battery capacity is at least 805 of the manufacturer's rating when subjected to a performance discharge test.This performance discharge test shall be performed subsequent to the satisfactory completion of the required battery service test..C.COOK-UNIT 2 3/4 8-9 TABLE 4.8-1A BATTERY EMERGENCY LOAOS AB Batter Loads.Minimum Time 1.Channel I II static inverter*2.Channel I V static i nverter*3.Computer s ta ti c inverter*4.BOP static inverter" 5.Feed pump turbine 2E oil pump 6.Control room emergency lighting 7.Hain turbine oil pump"E" 8.Isolation valve control 9.All contrnl circuits 3 hrs 3 hrs 3 hrs'hrs 1 hr 8 hrs 3 hrs 8 hrs 8 hrs 1: Channel I static inverter*2.Channel II static inverter*3.Feed, pump turbine 2M oil pump 4.Generator seal oil pump 5.Hain turbine oil pump"M" 6.Isolation valves 3 hrs 3 hrs 1 hr 5 hrs 3 hrs'8 hrs 7.Annunciators 8.All control circuits 8 hrs*AC power sources to the inverters shall be turned.off at the start of the test and may be turned on at the end of the specified time interval.Inverters may be left in this operating mode for the duration of the discharge test.0.C.COOK-UNIT 2 3/4 8-10 CHANGE NO....., AEP:NRC:0372 I~~~l~I~w~r TABLE 1.2 FREQUENCY NOTATION NOTATION S SA S/U N.A.FREQUENCY At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.At least once per 7 days.At least once per 31 days At least once per 92 days.At least once per 184 days..At least once per 549 days.Prior to each reactor startup.Not applicable.

D.C.COOK-UNIT 1 1-7

TABLE 1.2 FRE UENCY NOTATION NOTATION S W Q SA S/U: N.A.~FRE UENCY At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.At least once per 7 days.At least once per 31 days At least once per 92 days.At least once per 184 days.At least once per 549 days.Prior to each reactor startup.Not applicable.

D.C.COOK-UNIT 2 1-8 h~eC CHANGE NO....., AEP:NRC'0372

~~

I POWER DISTRIBUTION LI S ACTION: (Continued)

I c)Surveillance testing of the APDMS may be per formed pursuant to Specification 4.3.3.7.1 provided the indicated AFD is mai ntained within the limits of Figure 3.2-1.A total of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> of operation may be accumulated with the AFD outside of the target band during this testing without penalty deviation.

b., ERMAL POWER shall not be increased above 90%or 0.9 X APL whichever is less)of RATED THERHAL POllER unless the indicated AFD is within the 5Ãtarget band and ACTION.2.a) 1), above'has been satisfied.

c.THERMAL POWER shall not be increased above 50K of RATED THERMAL POWER unless the indicated AFD has not been outside of the~+5%target band for more than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> penalty deviation cumulative during the previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.d.During power reductions using control gods, the reporting require-ments of Specification 6.9.1.9 shall not apply provided the action items above are satisifed..

SURYEILLANCE RE UIREMENTS J 4.2.1.1 The indicated AXIAL FLUX DIFFERENCE shall be determined to be within its limits during POWER OPERATION above 15K of RATED THERMAL POWER by: a..Monitoring the indicated AFD for each OPERABLE excore.channel: At least once per 7 days when the AFD Monitor Alarm is'PERABLE, and 2., At least once per hour for the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after restoring the AFD Monitor Alarm to OPERABLE status.b.Monitoring and logging the indicated AXIAL FLUX DIFFERENCE for each OPERABLE excore channel at least once per hour for the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and at least once per 30 minutes thereafter,-

when the AXIAL FLUX DIFFERENCE Monitor Alarm is INOPERABLE.

The 1ogged values of the indicated AXIAL FLUX DIFFERENCE shall be.assumed to exist during the interval preceding each logging.~t 0.C.'.COOK UNIT 1 3/4 2-2 POWER DISTRIBUTION LI TS ACTION: (Continued) c)Surveillance testing of the APDMS may be performed pursuant to Specification 4.3.3.7.1 provided the indicated AFD is maintained within the limits of Figure 3.2-1.A total of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> of operation may be accumulated with the AFD outside of the target band during this testing without penalty deviation.

b.THERMAL POWER shall not be increased above 814 of RATED THERMAL POWER unless the indicated AFD is within the+5%target band and ACTION 2.a)1), above has been satisfied.

C.THERMAL POWER shall not be increased above 50%of RATED THERMAL POWER unless the indicated AFD has not been outside of the+5%target band for more than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> penalty deviation cumulative during the previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.d.During power reductions using control, rods, the reporting require-ments of Specification 6.9.1.9 shall riot apply provided the action items above are satisifed.

SURVEILLANCE RE UIREMENTS 4.2.1.1 The indicated AXIAL FLUX DIFFERENCE shall be determined to be within its limits during POWER OPERATION above 15%of RATED THERMAL POWER by: a.Monitoring the indi cated AFD for each OPERABLE excore channel: l.At, least once per 7 days when the AFD Monitor Alarm is OPERABLE, and 2.At least once per hour for the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after restoring the AFD Monitor Alarm to OPERABLE status.b.Monitoring and logging the indicated AXIAL FLUX DIFFERENCE for each OPERABLE excore channel at least once per hour for the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and at least once per 30 minutes thereafter, when the AXIAL FLUX DIFFERENCE Monitor Alarm is INOPERABLE.

The logged values of the indicated AXIAL FLUX DIFFERENCE shall be assumed to exist during the interval preceding each logging.D.C.COOK UNIT 2 3/4 2-2 CHANGE NO.,-.AEP:NRC:0372 REACTIVITY CONTROL SYSTEMS CHARGING PUMP-SHUTDOMN LIMITING CONDITION FOR OPERATION 3.1.2.3 At least one charging pump in the boron injection flow path required by Specification 3.1.2.1 shall be OPERABLE and capable of being powered from an-OPERABLE emergency bus.APPLICABILITY:

MODES 5 and, 6.ACTION: With no charging pump OPERABLE, suspend all operations involving CORE ALTERATIONS or positive re~ctivity changes unti 1 one charging pump is restored to OPERABLE status.SURVEILLANCE REQUIREMENTS 4.1.2.3 At least the above required charging pump shall be demonstrated OPERABLE by verifying, that on recirculation flow, the pump develops a discharge pressure of>2390 psig when tested pursuant to Specification 4.0.5.D.C.'COOK-UNIT 2 3/4 1-11~~w s s~~/

CHANGE NO....., AEP:NRC:0372 CONTAIHMENT SYSTEMS CONTAIHMEHT AIR RECIRCULATION SYSTEMS LIMITIHG CONDITION FOR OPERATION 3.6.5.6 Two independent containment air recirculation systems shall be OPERABLE.APPLICABILITY:

MODES 1, 2, 3 and 4.ACTION: With one containment air recirculation system inoperable, restore the inoperable system to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY wi.thin the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.SURVEILLANCE REOUIREIMEHTS 4.6.5.6 Each containment air recirculation system shall be demonstrated OPERABLE at least once per 3 months on a STAGGERED TEST BASIS by: a.b.C.Verifying that the return air fan starts on an auto-start signal after a 10+1 minute delay and operates"or at least 15 minutes, Verifying that with the return air fan dampers closed, the fan , motor current is 56+10 amps when the fan speed is 880+20'PH, Verifying that with the fan off, the return air fan damoer opens when a force.of<ll lbs is applied to the counter-weight, and Verifying that the motor operated valve in the suction line co the containment's lower compartment opens after a 10+1 minute delay.0.C.COOK-UNIT 1 3/4 6-35 CONTAINMENT SYSTEMS CONTAINMENT AIR RECIRCULATION SYSTEMS LIMITING CONDITION FOR OPERATION 3.6.5.6 Two independent containment air recirculation systems shall be OP ERABLE.APPLICABILITY:

MODES 1, 2, 3 and 4.'I ACTION: With one containment air recirculation system in'operable,.restore.

the inoperable system to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.SURVEILLANCE REOUIREMENTS 4.6.5.6 E'ach containment air recirculation system shall be demonstrated OPERABLE at least once per 92 days on a STAGGERED TEST BASIS by: Verifying that the return air fan starts on an auto-start signal after a 10+0/-1 minute delay and operates for at least 15 minutes.b.Ci d.Verifying that with the return air fan dampers closed, the fan motor current is 56+10 amps when the fan speed is 880+20 RPM.Verifying that with the fan off, the return air fan damper opens when a force of<ll lbs is applied to the counterweight.

Yerifyino that the motor operated valve in the, suction line to the containment's lower compartment opens after a 10+0/-1 minute delay..C.COOK'-UNIT 2.,',.3/4 6 44~Amendment Ho.1'C~

CHANGE N0..7...AEP:NRC:0372

~~

~~F REACTIVITY CONTROL SYSTEI~)S BORATED WATER SOURCES-SHUTOOWN LIHITING CONOITION FOR OPERATION 3.1.2.7.As a minimum, one of the following borated water sources shall.be OPERABLE:, a.A bor ic acid storage system and associated heat tracing with: 1.A minimum conta.ined volume of 835 gallons,.Z.Between 20,000 and 22,500 ppm of boron, and b.3.A'inimum solution temperature of 145'F.The refueling water storage.tank with: 1.A minimum contained, volume of 9690 gallons, 2.~A minimum boron concentration of 1950 ppm, and 3.A.minimum solution temperature of 35'F.C APPLICABILITY!

NOOES 5 and 6.ACTION: I With no borated water source OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least'ne borated water source is restored to OPERABLE status.SURVEILLANCE RE UIREMENTS 4.1.2.7'he above required borated water source shall be demonstrated OPERABLE:.a.At least once per 7 days by: l.Verifying the boron concentration of the water, 2.Verifying the water level of the tank, and 3.Verifying the boric acid'storage tank solution temperature when it is the source of borated water.b.At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the RWST temperature wh'en it is the sou'rce of borated water and the outside air temperature is<35'F.0..C.COOK-UNIT 1 3/4 1-15 REACTIVITY CONTROL SYSTEMS BORATED WATER SOURCES-SHUTDOWN LIMITING CONDITION FOR OPERATION 3.1.2.7 As a.minimum, one of the following borated water sources shall be OPERABLE: a.A boric acid storage system and associated heat tracing with: l.A minimum contained borated water volume 835 gallons, 2.Between 20,000 and 22,500 ppm of boron, and 3.A minimum solution temperature of 145'F.b.The refueling water storage tank with: l.A minimum contained borated water volume of 9690 gallons, 2.A minimum boron concentration of'000 ppm, and3.A minimum solution temperature of 35'F.APPLICABILITY:

MODES 5 and 6.ACTION: With no borated water source OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least one borated water source is restored to..OPERABLE status.SURVEILLANCE RE UIREMEHTS 4.1.2.7 The above required borated water source shall be demonstrated OPERABLE: a.At least once per 7 days by: l.Verifying the boron'oncentration of the water, 2.Verifying the contained borated water volume, and 3.Verifying the boric acid storage tank solution temperature when it is the source of borated water.b.At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the RWST temperature when it is the source of borated water and the outside air temperature is<35'F.D.C.COOK-UNIT 2 3/4'>>15