Text

Rev 0 to PVNGS Unit 2,COLR
	ML17312B721
Person / Time
Site:	Palo Verde
Issue date:	10/03/1997
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	;
Shared Package
ML17312B720	List: ML17312B719; ML17312B721;
References
	NUDOCS 9710150183
	Download: ML17312B721 (46)
	v • d • e

CORE OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

Unit 2 Revision 0 Page 1 of24 97iOi50i83 97i003 I

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PVNGS VNIT2 CORE OPE<RATING LIMITSRE<PORT Table of Contents

~Deecri rien Revision ¹

~Pa e Cover Page Table of Contents Affected Technical Specifications CORE Operating Limits 3.1.1.1 Shutdown Margin - Reactor Trip Breakers Open 3.1.1.2 Shutdown Margin - Reactor Trip Breakers Closed 3.1.1.3 Moderator Temperature Coefficient 3.1.2.7 Boron Dilution Alarms 3.1.3.1 Movable Control Assemblies - CEA Position 3.1.3.6 Regulating CEA Insertion Limits 3.1.3.7 Part Length CEA Insertion Limits 3.2.1 Linear Heat Rate 3.2.3 Azimuthal Power Tilt-Tq 3.2.4 DNBR Margin 3.2.7 Axial Shape Index 3.9.1 Boron Concentration (Mode 6)

List ofFigures Figure 3.1.1.1-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open Figure 3.1.1.2-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed Figure 3.1.1.3-1 MTC Acceptable Operation, Modes 1 and 2 Figure 3.1.3.1-1 Core Power LimitAfter CEA Deviation 10

~Figure 3.1.3.6-1 CEA Insertion Limits Versus Thermal Power (COLSS in Service) 12 Figure 3.1.3.6-2 CEA Insertion Limits Versus Thermal Power (COLSS Out of Service) 13 Figure 3.1.3.7-1 Part Length CEA Insertion Limits Versus Thermal Power 0

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT Table of Contents (Continued)

D~escri tion Revision ¹

~Pa e Figure 3.2.3-1 Azimuthal Power TiltVersus Thermal Power (COLSS in Service) 15

-Figure 3.2.4-1 COLSS DNBR Operating LimitAllowance for Both CEACs Inoperable 16 Figure 3.2.4-2 DNBR Margin Operating LimitBased on the Core Protection Calculators (COLSS Out of Service, CEACs Operable) 17 Figure 3.2.4-3 DNBR Margin Operating LimitBased on the Core Protection Calculators (COLSS Out of Service, CEACs Inoperable)

List ofTables 19 Table 3.1.2.7-1 Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98 20 Table 3.1.2.7-2 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff> 0.97 21 Table 3.1.2.7-3 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff> 0.96 22 Table 3.1.2.7-4 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff> 0.95 23 Table 3.1.2.7-5 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff( 0.95 24 Page 3 of 24

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PVNGS UNIT2 CORE OPE<RATING LIMITSREPORT

'/his Report has been prepared in accordance with the requirements ofTechnical Specification 6.9.1. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 6.9.1.10 ofthe Palo Verde Unit 2 Technical Specifications.

FFE TKDPVN TE HNI AI.

PF. IFI ATI N 3.1.1.1 Shutdown Margin - Reactor Trip Breakers Open 3.1.1.2 3.1.1.3 Shutdown Margin - Reactor Trip Breakers Closed Moderator Temperature Coefficient 3.1.2.7 Boron DilutionAlarms 3.1.3.1 Movable Control Assemblies - CEA Position 3.1.3.6 3.1.3.7 Regulating CEA Insertion Limits Part Length CEA Insertion Limits 3.2.1 Linear Heat Rate 3.2.3 Azimuthal Power Tilt-Tq 3.2.4 DNBR Margin 3.2.7 Axial Shape Index 3.9.1 Boron Concentration (Mode 6)

RF<.

PFRATIN I.IMIT The cycle-specific operating limits for the specifications listed are presented below.

3.l.l.l -

hutdown Mar 'n - Reactor Tri Breaker 0 en The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1.1-1.

3.1.1.2 - Shutdown Mar n - Reactor Tri Breakers Closed The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1.2-1.

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PVNGS UNIT2 CORE OPE<RATING LIMITSRE<PORT RF.

PFRATI I,IMIT -

TI I:D 3.1.1.3 - Moderator Tem erature Coefficient The moderator temperature coefFicient (MTC) shall be within the area ofAcceptable Operation shown in Figure 3.1.1.3-1.

3.1.2.7 - Boron Dilutio'n Alarms With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring frequency specified in Tables 3.1.2.7-1 through 3.1.2.7-5.

8.1.8.1 - Movable Control Assemblies - CEA Position With one or more full-length or part-length CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES 1 and 2 core power reduction is specified in Figure 3.1.3.1-1.

3.1.3.6 - Re ulatin CEA Insertion Limits One or more CEACs OPERABLE: With COLSS IN SERVICE, regulation CEA'groups shall be limited to the withdrawal sequence and to the insertion limits shown in Figure 3.1.8.6-1; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits shown in Figure 3.1.8.6-2.

3.1.3.7 - Part Len h CEA Insertion Limits One or more CEACs OPERABLE: The part length CEA groups shall be limited to the insertion limits shown in Figure 3.1.3.7-1.

8.2.1 - Linear Heat Rate The linear heat rate limitof 13.1 kW/ftshall be maintained.

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT RE PERATIN I,IMIT -

NTIN FD 3.2.3 - Azimuthal Power Tilt-T The AZIMUTHALPOWER TILT(Tq) shall be less than or equal to the limitin Figure 8.2.3-1 with COLSS IN SERVICE.

8.2.4-DNBR Mar 'n COLSS IN SERVICE and Both CEACs INOPERABLE - Maintaining COLSS calculated core power less than or equal to COLSS calculated core power operation limitbased on DNBR decreased by the allowance shown in Figure 3.2.4-1.

COLSS OUT OF SERVICE and Either One or Both CEACs are OPERABLE - Operating within the region ofacceptable operation of Figure 3.2.4-2 using any'perable CPC channel.

COLSS OUT OF SERVICE and CEACs INOPERABLE - Operating within the region ofacceptable operation ofFigure 3.2.4-3 using any operable CPC channel.

8.2.7-Axial Sha e Index The core average ALGALSHAPE INDEX(ASI) shall be maintained within the followinglimits:

COLSS OPERABLE

-0.186 < ASI < 0.164 COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 8.9.1 - Boron ncentration Mode 6 The boron concentration ofall filledportions ofthe Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 3000 ppm.

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT

~UT lilit 3.1.1.1-1.

Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Open 3.1.1.2-1.

Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Closed 3.1.1.3-1.

MTC Acceptable Operation, Modes 1 and 2.

3.1.3.1-1.

Core Power LimitAfter CEA Deviation.

3.1.3.6-1.

CEA Insertion Limits Versus Thermal Power (COLSS In Service).

3.1.3.6-2.

CEA Insertion LimitsVersus Thermal Power (COLSS Out ofService) 3.1.3.7-1.

Part Length CEA Insertion LimitVersus Thermal Power.

3.2.3-1.

Azimuthal Power TiltLimitVersus Thermal Power (COLSS In Service).

3.2.4-1.

3.2.4-2.

3.2.4-3.

COLSS DNBR Power Operating LimitAllowance for Both CEACs Inoperable.

DNBR Margin Operating LimitBased on Core Protection Calculators (COLSS Out ofService, CEACs Operable).

DNBR Margin Operating LimitBased on Core Protection Calculators (COLSS Out ofService, CEACs Inoperable).

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3.1.1.1 1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN Cl z

REGI N OF ACCE TABLE OPER TION REGI N OF UNACC PTABLE OPER TION 100 200 300 400 500 600 COLD LEG TEMPERATURE ( F)

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT FIGURE 3. 1. 1.2 1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED (500,6.

REGI ACCE OPER N OF TABLE TION REGI N OF NACC PTABL OPER TION 100 200 300 400 500 600 COLD LEG TEMPERATURE ( F)

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PVNGS UNIT 2 CORE OPERAT'ING LIMITS REPORT FIGURE 3.1.3.1 1 CORE POINTER LIMITAFTER CEA DEVIATION*

0 10 20 30 40 50 60 TIME AFTER DEVIATION, MINUTES

WHEN CORE POWER IS REDUCED TO 55% OF RATED THERMAL POWER PER THIS LIMITCURVE, FURTHER REDUCTION IS NOT REQUIRED Page 11 of 24

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3. 1.3.7 1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMALPOWER 10 10 R

Cl V

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IÃ C4 20 30 40 50 60 70 80 90 100 110 120 130 140 TRANSIENT INSERTION LIMIT 75.0 INCHES OPERATION UNACCEPTABLE OPERATION RESTRICTED OPERATION ACCEPTABLE LONG TERM STEADY STATE INSERTION LIMIT (112.5 INCHES) 20 30 40 50 60 70 80 90 100 110 120 130 140 150 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 FRACTION OF RATED THERMALPOWER 150 Page 14 of 24

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT FIGURE 3.2.3 1 AZIMUTHALPOWER TILT VERSUS THERMAL POWER (COI SS IN SERVICE) 50 45 40 35 30 25 20 15 10 5

REGION OF UNACCEPTABLE OPERATION 0

10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMALPOWER Page 15 of 24

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3.2.4 2 DNBR MARGIN OPERATING LIMITBASED ON THE CORE PROTECTION CALCULATORS (COLSS OuT OI" SZRVlCZ, CZ~C s OPZR~SLZ) 2.5 ACCEPTABL OPER ATION 2.3 z

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0.1, 2.3 (0.1, 2.0 N

EPTAB PERAT 1.8 0.20 0.15 0.10 0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 17 of 24

PVNGS UNIT 2 CORE OPERATING LllNlTS REPORT Revision 0 FIGURE 3.2.4 3 DNBR MARGIN OPERATING LIMITBASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 3.6 3.5 PTAB Z

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-0.20

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-0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 18 of 24

Revision 0 PVNGS UNIT2 CORE OPERATING LIMITSREPORT

>>r!"'*"

3.1.2.7-1.

Required MonitoringFrequencies forBackup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for E g > 0.98.

3.1.2.7-2.

Required MonitoringFrequencies forBackup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.98 > E g > 0.97.

3.1.2.7-3.

Required MonitoringFrequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.97 > K g > 0.96.

4 3.1.2.7-4.

Required MonitoringFrequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.96>K g> 0.95.

3.1.2.7-5.

Required MonitoringFrequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for E g< 0.95.

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-1 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR K,ff)0.98 OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 48' on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA ONA ONA ONA ONA 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 20 of24

PVNGS UNIT2 CORK OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-2 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTION OF OPERATING CHARGING PUMPS ANDPLANT OPERATIONALMODES FOR 0.98 > K~ff)0.97 OPERATIONAL MODE Number of Operating Charging Pumps 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 1 hour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA 4 not on SCS 5 not on SCS 4 &5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 21 of 24

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-3 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.97 > Kcfr)0.96 OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4 &,5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour 12hours 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour ONA 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 22 of 24

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-4 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.96 >

Kcff)0.95 OPERATIONAL MODE Number of Operating Charging Pumps 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 3 hours 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 not on SCS 5 not on SCS 4&5onSCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 3.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA 12hours 3.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 23 of 24

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PVNGS UNIT2 CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-5 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANT OPERATIONALMODES FOR K ff< 0.95 OPERATIONAL MODE Number of Operating Charging Pumps 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4 hours 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour 4noton SCS 5 not on SCS 4&5onSCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 4.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 2hours 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 2 hours 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months ONA 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 2 hours 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 24 hours 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA Notes:

SCS = Shutdown Cooling System ONA = Operation not allowed Page 24 of 24

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ML17312B721

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