Text

Rev 0 to COLR for Pvngs,Unit 1 Cycle 5
	ML17310A752
Person / Time
Site:	Palo Verde
Issue date:	10/29/1993
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
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ML17310A750	List: ML17310A748; ML17310A752;
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ENCLOSURE CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION UNIT 1 CYCLE 5 REVISION 0 93ii050iOb 93i029 PDR ADOCK 05000528 P

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CORK OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT1 CYCLE 5 Revision 0

0

Revision 0 Comm or Ka~nxG r,j:MnS are om PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT1 CYCLE 5 INDEX REVISIONHISTORY......

PA E

AFFECTED PVNGS TECHNICALSPECIFICATIONS.........................................

4 CORE OPERATING LIMITS.

REFERENCES.

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7 LIST OF FIGURES.

LIST OF TABLES...

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Revision 0 CORE OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT1 CYCLE 5 REVISION HISTORY R~ievisi n Date 10/26/93 Pres Issue for Use (24 Total Pages)

Page 3 of 24

Revision 0 CORE OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT1 CYCLE 5 This Core Operating Limits Report for PVNGS Unit 1 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.

FFF.

TFD PVN TF. HNI AL PF. IFI ATI N 1) 8.1.1.2 Shutdown Margin KN ~ - Any CEA Withdrawn 2) 8.1.1.8 Moderator Temperature Coefficient 8) 3.1.2.7 Boron DilutionAlarms 4) 3.1.8.1 Movable Control Assemblies - CEA Position 5) 8.1.3.6 Regulating CEA Insertion Limits 6) 3.1.8.7 Part Length CEA Insertion Limits 7) 8.2.1 Linear Heat Rate 8) 3.2.8 9) 8.2.4 Azimuthal Power Tilt-Tq DNBR Margin

'0) 8.2.7 Axial Shape Index RK PERATIN LIMIT The cycle-specific operating limits forthe specifications listed are presented below.

.1.1.2 - Shutdown Mar 'n KN ~ - An EA ithdrawn The Shutdown Margin shall be greater than or equal to that shown in Figure 1.

8.1.1.8 - Mod rator Tem erature oefficient The moderator temperature coefficient (MTC) shall be withinthe area ofAcceptable Operation shown on Figure 2.

Page4 of24

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Revision 0 PVNGS UNITICYCLE 5 CORE OPERATING LIMITSREPORT RE PER ATIN I IMIT -

NTIN ED 1.2.7-B r n Dil ti n Al rm 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.

.1.

1 - Movable ontrol emblie EA Po iti n 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 8.

.1..6 - Re latin EA In rtion Limit One or more CEAC's OPERABLE: The regulation CEA 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 93JT OF SERVICE.

1.

7 - Part Len h

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

8 2.1 - Linear He t Rate The linear heat rate limitof 18.5 kW/R shall be maintained.

8.2.

- Azimuthal P er Tilt-T The AZIMUTH'ALPOWER TILT(Tq) shall be less than or equal to the limitin Figure 7 with COLSS INSERVICE.

Page 5 of 24

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Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT RF.

PF.RATI I IMIT. -

NTIN F.D

.2.4-DNBRM r '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.

.27-Axi l h

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

COLSS OPERABLE

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

-0.20 5 ASI 5 0.20 Page 6 of 24

Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT (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.

3.

5.

6.

7.

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 of,Uncertainties," 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: KKniel (NRC) to A. E. Scherer (C-E), dated September 27, 1977 (Evaluation ofTopical Reports CENPD-133, Supplement 3-P and CENPD-137, Supplement 1-P).

Page 7 of 24

Revision 0 PVNGS UNIT 1 CYCLE 5 CORE OPERATING LIMITSREPORT

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)

6. Part Length CEA Insertion LimitVersus Thermal Power.

7. Azimuthal Power TiltLimitVersus Thermal Power (COLSS In Sew>ice).

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)

Page 8 of24

.Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT FIGURE 1 SHUTDOWNMARGINVERSUS COLD LEG TEMPERATURE (500, 6.5 ACCEPTABLE A

4

~O U

O4 (350 4.0)

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

Page 9 of24

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(O'Yo, 0.5)

(100%, 0.0)

-0.5

-1

-1.5

-2

-2.5

-3

-3.5

-4.0 0

(0 lo, -3.1) 10 20 30 40 50 60

'70 8

CORB POKER LBVBL,/o OP RATBDTHBRb4ALPO%BR (100 lo, -3$)

90 100 5

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Revision 0 PVNGS UNIT 1 CYCLE 5 CORE OPERATING LIMITSREPORT FIGURE 3 30 CORE POWER LIMITAFTER CEA DEVIATION*

20 a

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C4 Q l4 OA 10 I

K (y P g Q (60 MIN,20%)

10 20 30 40 50 60 TIMEAFTER DEVIATION,MINUTES

~ WHEN CORE POWER IS REDUCED TO 55% OF RATEDTHERMAL POWER PER THIS LIMI'I'URVE,FURTHER REDUCTION IS NOT REQUIRED Page 11 of 24

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1.0 0.9 0.8 0

0 0.6 0.5 0.4 0.3 Q

/pi M

S TIO 0

0.2 0.1 0.0 150 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)

1.0 0.9 g

0.8 0

0.7 0.6 0.6 0.4 0.3 0.2 0.1 0.0 0

150

. 120 MgNg PQ eiiA GROUP 5 GROUP 3 90 60 30 0

150 120 90 60 30 GROUP 1 0

150 120 90 60 30 0

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> F 0

GROUP 4 150 120 90 60 30 0

GROUP 2 150 120 90 60 30 0

CEA POSITION INCHES WITHDRAWN)

0.90 0.80 g

0.70 0

O 0.60 0.50 0.40 0.30 I

0.20 0.10 0.00 0

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o (50% RAIFJ)1TKlMALPOWER) 0 g i~

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o PART LENGTH CEA POSITION, INCHES WITHDRAWN

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PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT FIGURE 7 AZIMUTHALPOWER TILTLIMITVERSUS THERMALPOWER (COLSS IN SERVICE) 100 90 80 70 60 50 REGION OF UNACCEPTABLE OPERATION 40 30 20 10 REGION OF ACCEFI'ABLEOPERATION 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMALPOWER Page 15 of 24

Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LMITSREPORT FIGURE 8 COLSS DNBR POWER OPERATING LIMIT ALLOWANCEFOR BOTH CEACs INOPERABLE 100 20% e 95%

POWER 75 0

50 0

zs 25 20 15 10 COLSS DNBR POWER OPERATING LIMITREDUCIION

(% OF RATEDTHERMALPOWER)

Page 16 of 24

Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT FIGURE 9 DNBR MARGINOPERATING LIMITBASED ON CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEACs OPERABLE) 2.5 2.4 2.3 ACCEPTABLE OPERATION MING4KJM 1 CEAC OPERABLE (0.2, 2.20) p, 21 O

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(-0.2, 2.10) 2.0 UNACCEPTABLE OPERATION 1.9 1.8

-0.3

-0.2

-0.1 0.0 0.1 0.2 0.3 CORE AVERAGEASI Page 17 of24

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Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT FIGURE 10 DNBR MARGINOPERATING LIMITBASED ON CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEACs INOPERABLE) 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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Revision 0 PVNGS UNITI CYCLE 5 CORE OPERATING LIMITSREPORT LI T FTABI,E,

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

2. Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.982K g> 0.97.

3. Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for 0.972K g> 0.96.

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

5. Required Monitoring Frequencies for Backup Boron DilutionDetection as a Function ofOperating Charging Pumps and Plant Operational Modes for E F50.95.

Page 19 of24

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Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT TABLE 1 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTIONOF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR K,ff)0.98 OPERATIONAL MODE Number ofOperating Charging Pumps 1

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 1 hour ONA ONA 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 1 hour 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 1 hour 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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Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT TABLE2 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGINGPUMPS ANDPLANTOPERATIONALMODES FOR 0.98 2 K tr) 0.97 OPERATIONAL MODE Number ofOperating Charging Pumps 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 48> 5 onSCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 8 hours 2.5hours 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 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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Revision 0 PVNGS UNITI CYCLE 4 CORE OPERATING LIMITSREPORT TABLE3 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS A FUNCTIONOF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR 0.97 2 K,g) 0.96 OPERATIONAL MODE Number ofOperating Charging Pumps 4 not on SCS 5 not on SCS 48> 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 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 of24

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Revision 0 PVNGS UNIT 1 CYCLE 5 CORE OPERATING LIMITSREPORT TABLE4 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTIONAS A FUNCTION OF OPERATING CHARGINGPUMPS ANDPLANTOPERATIONALMODES FOR 0.96 2 K g) 0.95 OPERATIONAL MODE Number ofOperating Charging Pumps 4notonSCS 5 not on SCS 4 &5 onSCS 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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'Revision 0 PVNGS UNIT1 CYCLE 5 CORE OPERATING LIMITSREPORT TABLE5 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTIONAS A FUNCTION OF OPERATING CHARGING PUMPS ANDPLANTOPERATIONALMODES FOR K g 5 0.95 OPERATIONAL MODE Number ofOperating Charging Pumps 4 not on SCS Snot on SCS 48' onSCS 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 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 Notes:

SCS = Shutdown Cooling System Page 24 of 24

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ML17310A752

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