Text

Rev 0 to COLR Palo Verde Nuclear Generating Station Unit 1
	ML17312B112
Person / Time
Site:	Palo Verde
Issue date:	11/08/1996
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	;
Shared Package
ML17312B111	List: ML17312B110; ML17312B112;
References
	NUDOCS 9611200253
	Download: ML17312B112 (48)
	v • d • e

CORK OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT 1 Revision 0 Page 1 of24

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PVNGS UNIT 1 CORE OPERATING LIMITSREPORT Table of Contents

~Descri 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) 6

'ist of Figures 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 UNIT 1 CORE OPERATING LIMITSREPORT Table of Contents (Continued)

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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) 18 List of Tables 19 Table 3.1.2.7-1 Required Monitoring Frequencies for Backup Boron Dilution Detection 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 DilutionDetection 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 UNIT 1 CORE OPERATiNG LIMITSREPORT This 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 of the Palo Verde Unit 1 Technical Specifications.

AFFE TED PVN TE HNI AI. PE IFI ATI N 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 DilutionAlarms 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 3.2.7 3.9.1 DNBR Margin Axial Shape Index Boron Concentration (Mode 6)

RF.

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

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

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PVNGS UNIT 1 CORE OPERATING LIMITSREPORT C

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PF.RATIN I,IMIT -

NTIN F.D 3.1.1.3 - Moderator Tem erature Coefficient The. moderator temperature coef6cient (MTC) shall be within the area ofAcceptable Operation shown in Figure 3.1.1.3-1.

3.1.2.7 - Boron Dilution 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.

3.1.3.1 - Movable Control Assemblies -

EA 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 latin 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 3.1.3.6-1; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits shown in Figure 3.1.3.6-2.

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.

3.2.1 - Linear Heat Rate The linear heat rate limitof 13.3 kW/ftshall be maintained.

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PVNGS UNIT 1 CORE OPERATING LIMITSREPORT RE PERATIN I.IMIT - C NTINUED 3.2.3 - Azimuthal Power Tilt-Tq The AZIMUTHALPOWER TILT(Tq) shall be less than or equal to the limitin Figure 3.2.3-1 with COLSS IN SERVICE.

3.2.4 - 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 of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

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

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

COLSS OPERABLE

-0.185 < ASI < 0.160 COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 3.9.1 - Boron Concentration Mode 6 The boron concentration ofall filled portions ofthe Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 3000 ppm.

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PVNGS UNIT1 CORE OPERATING LIMITSREPORT LI T Fl RE 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 Limits Versus 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 of Service, CEACs Operable)

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

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3. 1. l. l1 SHUTDOlIItN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN

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D1 REGI N OF ACCE TABLE OPER TION REGI N OF UNACC PTABLE OPER TION 100 200 300 400 COLD LEG TEMPERATURE ( F) 500 600 Page 8 of R4

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3. 1. 1. 2 1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED'6

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D1 REGI ACCE OPER TABLE TION REGI UNACC OPE (500,6.

N OF PTABLE TION 100 200 300 400 COLD LEG TEMPERATURE (F) 500 600 Page 9 of 24

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0 10 20 30 40 50 60 70 80 CORE POWER LEVEL (% OF RATED THERMALPOWER) 90 100 6

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3.1.3.1 1 CORE POKER LIMITAFTER CEA DEVIATION ~

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

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3. 1.3. 6 1 CEA INSERTION LIMITS VERSUS THERMALPOWER (COLSS IN SERVICE)

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3. 1.3. 6 2 CEA INSERTION LIMITS VERSUS THERMALPOWER (COLSS OUT OF SERVICE)

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HES c5 c5 c5 CS CS C)

CS FRACTION OF RATED THERM.I.L POWER Pago 13 of 24

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3.1.3.7 1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMALPOWER 0

0 R

M W

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C4 C4 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 10 20 30 40 50 60 TRANSIENT INSERTION LIMIT 5.0 INCHES 70 80 OPERATION UNACCEPTABLE OPERATION RESTRICTED sn I~ 0 P5 5 5 <SISS S S S ~ SS S 5 S SII~IIIII~ SISS S ~ 1 ~ SS 90 100 110 LONG TERM STEADY STATE INSERTION LIMIT(112.5 INCHES)

OPERATlON ACCEPTABLE 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 THERMALPO)UER Page 14 of 24

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3.2.3 j.

AZIMUTHALPOWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) z~ 45 W 40 lX 30

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

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3.2.4 1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE Revision 0 (20, 95.0)

(0.0, 75.0)

C4 CO C4 o A C4 C)

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C4 COLSS DNBR POWER OPERATING LIMITREDUCTION (Fa OF RATED THERMAL POWER)

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PVNGS UNIT1 CORE OPERATING LIMITS REPORT FIGURE 3.2.4 2 DNBR MARGIN OPERATING LIMITBASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE)

Revision 0 2.5 2.4

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PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3.2.4 3 DNBR MARGIN OPERATING LIMITBASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 3.6 Revision 0 Z 3.4 Cl Q 3.3 z

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

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PVNGS UNIT 1 CORE OPERATING LIMITSREPORT I.

T TABI.E 3.1.2.7-1.

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

3.1.2.7-2.

Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.98 > K ff> 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 ff> 0.96.

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 ff> 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 ff< 0.95.

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PVNGS UNIT 1 CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-1 REQUIRED MONITORINGFREQUENCIES FOR BACKUP. BORON DILUTIONDETECTION AS AFUNCTION OF OPERATING CHARGING PUMPS ANDPLANT OPERATIONALMODES FOR K~ff)0.98 OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4&5on 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 2G of 24

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PVNGS UNIT 1 CORE< OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-2 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.98 > K,ff) 0.97 OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4 8c 5 on SCS 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 12 hours 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 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 ONA 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 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 Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 21 of 2 1

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PVNGS UNITI CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-3 REQUIRED MONITORINGFREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.97 > K,ff> 0.96 OPERATIONAL MODE Number of Operating Charging Pumps 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 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 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 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 i'age 22 of 24

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PVNGS UNIT 1 CORES'PERATING LIMITSRE<PORT Revision 0 TABLE3.1.2.7-4 REQUIRED MONITORINGFREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANT OPERATIONALMODES FOR 0 96 + Kcff)0 95 OPERATIONAL MODE Number of Operating Charging Pumps 1

2 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 & 5 on SCS 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 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 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'4

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PVNGS UNIT 1 CORE OPERATING LIMITSREPORT Revision 0 TABLE3.1.2.7-5 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR K~ff< 0.95 OPERATIONAL MODE Number ot'Operating Charging Pumps I

2 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 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 8 hours 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 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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ML17312B112

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