Text

COLR PVNGS Unit 3 Cycle 5, Rev 1
	ML17310B310
Person / Time
Site:	Palo Verde
Issue date:	05/18/1994
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	;
Shared Package
ML17310B309	List: ML17310B308; ML17310B310;
References
	NUDOCS 9405310263
	Download: ML17310B310 (47)
	v • d • e

e CORK OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT3 CYCLE 5 Revision 1 9405310263 9405ia PDR ADOCK 05000530 P

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CORE OPERATING'IMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT3 CYCLE 5 INDEX PA E

REVISIONHISTORY...

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3 AFFECTED PVNGS TECHNICALSPECIFICATIONS..

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4 CORE OPERATING LIMITS.............

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REFERENCES........................

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Revision 1 CORK OPERATING LIMITSREPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT3 CYCLE 5 REVISION HISTORY Revision Date 04/20/94 05/20/94

~Ps es First Issue U3C5 (24 Total Pages)

Replaced Pages 1, 3, 17 (24 Total Pages)

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e CORE OPERATING <<I IMITSREPORT:

PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT3 CYCLE 5 This Core Operating Limits Report for PVNGS Unit 3 Cycle 5 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 References 1 through 12.

AFFE TED P N

TE HNI AL PF. IFI ATI N 1) 3.1.1.2 Shutdown Margin KN y - Any CEA Withdrawn 2) 3.1.1.8 Moderator Temperature Coefficient 3) 3.1.2.7 Boron DilutionAlarms 4) 8.1.3.1 Movable Control Assemblies - CEA Position 5) 3.1.8.6 Regulating CEA Insertion Limits 6) 3.1.3.7 Part Length CEA Insertion Limits 7) 8.2.1 Linear Heat Rate 8) 8.2.8 9) 3.2.4 10) 3.2.7 Azimuthal Power Tilt-T<

DNBR Margin AxialShape Index RF P <RATIN L T

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

.1 12-hutdown M

'n KN ~ -An EA Withdr wn The Shutdown Margin shall be greater than or equal to that shown in Figure 1,

.118-M derat r Tem erature oefficient The moderator temperature coefficient (MTC) shall be withinthe area ofAcceptable Operation shown on Figure 2.

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PVNGS UNIT3 CYCLE 5 CORE 0 ERATINGLIMITSRE<PORT RE PER ATIN LIMIT -

NTIN ED 3.1.2.7 - Boron Diluti n Alarm 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 1 through 5.

3.1.3.1 - Mov le ntr 1

m lie EA Po ition 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.

,1.3.6 - Re l tin CEA In ertion Limit One or more CEAC's OPERABLE: The regulation CE<A groups shall be limited to the withdrawal sequence and. to the insertion limits shown on Figure 4 when the COLSS is INSERVICE or shown on Figure 5 when the COLSS is QUT OF SERVICE.

.1..7 - Part Len h

EA In erti n Limit One or more CEAC's OPERABLE: The part length CEA groups shall be limited to the insertion limits shown on Figure 6.

,2.1 - Linear Heat Ra The linear heat rate limitof 13.5 kW/R shall be maintained.

3.2.3 - Azimuthal Power Tilt-T The AZIMUTHALPOWER TILT(T<) shall be less than or equal to the limitin Figure 7 with COLSS INSERVICE.

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PVNGS UNIT3 CYCLE 5 CORE OPgRATING LIMITSREPORT RK PER ATIN LIMIT -

NTIN FD 3.2 4 - DNBR Mar 'n COLSS INSERVICE and Both CEAC's 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 8.

COLSS OUT OF SERVICE and Either One or Both CEAC's are OPERABLE - Operating withinthe region ofacceptable operation of Figure 9 using any operable CPC channel, COLSS OUT OF SERVICE and CEAC's INOPERABLE - Operating withinthe region ofacceptable operation ofFigure 10 using any operable CPC channel, 32.7-Axi 1

ha eIndex The core average AXIALSHAPE INDEX(ASI) shall be maintained withinthe followinglimits:

COLSS OPERABLE

-0.28 < ASI 5 0.26 COLSS OUT OF SERVICE (CPC)

-0.20 5 ASI 5 0.20 Page 6 of 24

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PVNGS UNIT3 CYCLE 5 CORE O(ERATING LIMITSREPORT

~K (NOTE: Changes or Additions to these References willrequire a Technical Specification change to Section 6.9.1.10)

"C-E Method for Control Element Assembly Ejection Analysis," CENPD-0190-A, January, 1976.

2.

6.

8.

9.

10.

12.

"The ROCS and DITComputer Codes for Nuclear Design," CENPD-266-P-A, April, 1983.

"Safety Evaluation Report Related to the "Final Design ofthe Standard Nuclear Steam Supply Reference Systems CESSAR System 80, Docket No.STN 50-470,"

NUREG-0852 (November 1981), Supplements No. 1 (March 1983), No. 2 (September 1983), No. 3 (December 1987).

"ModifiedStatistical Combination ofUncertainties," CEN-356(V)-P-A Revision 01-P-A, May, 1988 and "System 80~ Inlet Flow Distribution,"

Supplement 1-P to Enclosure 1-P to LD-82-054, February, 1993.

"Calculational Methods for the C-E Large Break LOCAEvaluation Model,"

CENPD-132-P, August 1974.

"Calculational Methods for the C-E Large Break LOCAEvaluation Model,"

CENPD-132-P, Supplement 1, February 1975.

"Calculational Methods for the C-E Large Break LOCAEvaluation Model,"

CENPD-132-P, Supplement 2-P, July 1975.

Letter: O. D. Parr (NRC) to F. M. Stern (C-E), dated June 13, 1975 (NRC Staff Review ofCombustion Engineering ECCS Evaluation Model).

Letter: O. D. Parr (NRC) to A. E. Scherer (C-E), dated December 9, 1975 (NRC StaffReview ofProposed Combustion Engineering ECCS Evaluation Model Changes).

"Calculative Methods for the C-E Small Break LOCAEvaluation Model,"

CENPD-137-P, August 1974.

"Calculative Methods for the C-E Small Break LOCAEvaluation Model,"

CENPD-137-P, Supplement 1-P, January 1977.

Letter: K Eniel (NRC) to A. E. Scherer (C-E), dated September 27, 1977 (Evaluation ofTopical Reports CENPD-133, Supplement 3-P and CENPD-137, Supplement I-P).

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PVNGS UNIT3 CYCLE 5 CORE OP(ERATING LIMITSREPORT I

I.I T FFI RK

1. Shutdown Margin Versus Cold Leg Temperature.

2. Allowable MTC Modes 1 and 2.

3.

Core Power LimitAfter CEA Deviation.

4. CEA Insertion LimitsVersus Thermal Power (COLSS In Service).

5. CEA Insertion LimitsVersus Thermal Power (COLSS Out ofService) i

6. Part Length CEA Insertion LimitVersus Thermal Power.

7. Azimuthal Power TiltLimitVersus Thermal Power (COLSS In Service).

8. COLSS DNBR Power Operating LimitAllowance for Both CEACs Inoperable.

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

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

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PVNGS UNIT3 CYCLE 5 CORE OP(ERATING LIMITSREPORT FIGURE 1

'HUTDOWN MARGINVERSUS COLD LEG TEMPERATURE (500, 6.5 5

Q 4

g OA ACCEPTABLE (350 4.0)

REGIO OF OPERATION 100 200 300 400 500 600 COLD LEG TEMPERATURE ( F)

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PVNGS UNIT3 CYCLE 5 CORE O(ERATINGLIMITSREPORT FIGURE 2 - MTC ACCEPTABLE OPERATION, MODES 1 AND 2 O

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PVNGS UNIT3 CYCLE 5 CORE OP/RATING LIMITSREPORT FIGURE 3 30 CORE POWER LIMITAFTER CEA DEVIATION*

Q 20 Ql O Q c4 OA 10 530 (60 MN,20%)

10 20 30 40 50 60 TIMEAFTER DEVIATION,MQ'AJTES

+ WHEN CORE POWER IS REDUCED TO 55% OF RATED THERMAL POWER PER THIS LIMITCURVE, FURTHER REDUCTION IS NOT REQUIRED Page 11 of24

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0.6 0.5 0.4 0.3 0.2 0.1 0.0 Q

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150 GROUP 5 GROUP 3 GROUP 1

120 90 60 30 0

150 120 90 60 30 0

GROUP 4 GROUP 2 150 120 90 60 30 0

150 120 90 60 30 0

CEA POSITION (INCHES WITHDRAWN)

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0.8 0.7 0.6 0.5 0.4 0.3 0.2 v

rn g~i g vx~wwAAih 0.1 0.0 GROUP 5 GROUP 3 GROUP 1 150 120 90 60 30 0

150 120 90 60 30 0

GROUP 4 GROUP 2 150 120 90 60 30 0

150 120 90 60 30 0

CEA POSITION gNCHES WITHDRAWN)

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PVNGS UNIT3 CYCLE 5 CORE 0/ERATING LIMITSREPORT r

FIGURE 6 PART LENGTH CEA INSERTION LIMITVERSUS THERMALPOWER 10 20 TRANSIENTINSERTION LIMIT'(75.0INCHES)

UNACCEPTABLE OPERATION RESTRICTED OPERATION LONG TERM STEADYSTATE INSERTION LIMIT (112.5 INCHES) 30 40 50 60 70 80 90 100 110 120 130 O

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150 FRACTIONOF RATEDTHERMALPOWER Page 14 of 24

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PVNGS UNIT3 CYCLE 5 CORE OPERATING LIMITSREPORT

(

C FIGURE 7 AZIMUTHALPOWER TILTLlhllTVERSUS THERMALPOWER (COLSS IN SERVICE) 100 90 80 70 60 50 REGION OF UNACCEPTABLE OPERATION 40 30 20 10 REGION OF ACCEPTABLEOPERATION 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMALPOWER Page 15 of 24

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PVNGS UNIT3 CYCLE 5 CORE O(ERATINGLIMITSREPORT FIGURE 8 COLSS DNBR POWER OPERATING LIMIT ALLOWANCEFOR BOTH CEACs INOPERABLE 100 20% N 95%

POWER 75 50 0

25 25 20 15 10 0

COLSS DNBR POWER OPERATING LIMITREDUCTION

(% OF RATED THERMALPOWER)

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PVNGS UNIT3 CYCLE 5 CORE OPERATING LIMITSREPORT FIGURE 9 DNBRMARGINOPERATING LIMITBASED ON CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEACs OPERABLE) 2.5 2.4 ACCEPTABLE OPERATION MINIMUM1 CEAC OPERABLE (0.1, 2.25)

(0.2, 2.25)

U 2.1 O

2.0

(-0.2, 2.07)

UNACCEPTABLE OPERATION 1.9 1.8

-0.3

-.2 CORE AVERAGEASI

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PVNGS UNIT3 CYCLE 5 CORE O(ERATINGLIMITSREPORT FIGURE 10.

DNBR MARGINOPERATING LIMITBASED ON CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEACs INOPERABLE) 2.6 2.5 ACCEPTABLE OPERATION CEACs INOPERABLE 2.4 (0.05, 2.45)

(0.2, 2.45) 2.2

(-0.2, 2.25) 2.1 UNACCEPTABLE OPERATION 2.0

-0.3

-0.2

-0.1 0.0 0.1 0.2 0.3 CORE AVERAGEASI Page 18 of 24

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PVNGS UNIT3 CYCLE 5 CORE OP(ERATING LIMITSREPORT LI T FTABLE

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

2. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > K g > 0.97.

8. Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.97>E ff> 0.96.

4. Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.96>E g> 0.95.

5. Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for K @50.95.

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PVNGS UNIT3 CYCLE 5 CORE Ol'ERATINGLIMITSREPORT TABLE 1 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR K g) 0.98 OPERATIONAL MODE Number of Operating Charging Pumps 1

2 not on SCS 5 not on SCS 4 &5 onSCS 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 ONA 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 1 hour 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA ONA ONA ONA ONA ONA ONA ONA ONA Notes:

SCS = Shutdown Cooling System ONA= Operation Not Allowed Page 20 of 24

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t Revision PVNGS UNIT 3 CYCLE 5 CORE OP/RATING LIMITSREPORT 5

TABLE2 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.98 2 K g) 0.97 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 2 hours 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 48c5onSCS 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 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 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 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Notes:

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

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i Revision 0 PVNGS UNIT3 CYCLE 5 CORE O(ERATINGLIMITSREPORT TABLE3 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTIONOF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.97 > K,g) 0.96 OPERATIONAL MODE 0=

Number of Operating Charging Pumps 2

4 not on SCS 5 not on SCS 4 8c 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 1 hour 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 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 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 12 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 1 hour Notes:

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

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PVNGS UNIT3 CYCLE 5 CORE OPERATING LIMITSREPORT TABLE4 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECfIONAS AFUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.96 > K g > 0.95 OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4 8c 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 2 hours 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 5 hours 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 5 hours 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 1 hour 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 1 hour 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 1 hour 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 23 of 24

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PVNGS UNIT3 CYCLE 5 CORE 01'.ERATING LIMITSREPORT

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TABLE5 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTIONAS AFUNCTIONOF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR K g < 0.95 E

OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 48> 5 onSCS 6 ( > 4000 ppm) 6 (< 4000 ppm) 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 6 hours 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 6 hours 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months 2 hours 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 8 hours 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 2 hours 2.5 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 3 hours 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 3 hours 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 hours 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 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 24 of 24

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ML17310B310

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