Text

Core Operating Limits Rept,Palo Verde Nuclear Generating Station,Unit 3,Cycle 3
	ML17306A604
Person / Time
Site:	Palo Verde
Issue date:	03/19/1992
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	;
Shared Package
ML17306A600	List: ML17306A601; ML17306A602; ML17306A604; ML20091A497;
References
	NUDOCS 9203270206
	Download: ML17306A604 (46)
	v • d • e

j CORE OPERATING LIMITS REPORT PALO YERDE NUCLEAR GENERATING STATION (PYNGS)

UNIT 3 CYCLE 3 9203270206 9203i9 PDR ADOCK 05000528 P

PDR

0 0

CORE OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT3 CYCLE3 INDEX PAQE AFFECTED PVNGS TECHNICALSPECIFICATIONS CORE OPERATING LIMITS.....

REFERENCES.....,.

~

~ ~

~ ~ ~

~

~ o 4

LIST OF FIGURES LIST OF TABLES.

~

~ o ~

~ ~ ~ ~ ~ oooo

~ oo

~ ~ ~ ~ ~ oo ~ ~ oooooo ~ ~ oooo ~ ~ ooo ~ ~ o

~ o ~ o ~ ooooo ~ ~ o ~ o ~ oooo ~ o ~ ~ ~ o ~ ~

oohio 5

16

0 CORE OPERATING LIMITSREPORT PALO VERDE NUCLEARGENERATING STATION(PVNGS)

UNIT3 CYCLE 3 This Core Operating Limits Report for PVNGS Unit 3 Cycle 3 has been prepared in accordance with the requirements of Technical Specification 6.9.1.

The core operating limits have been developed using the NRC approved methodologies specified in References 1 through 5.

FFE TED P N TE HNI AL PE TI N 1) 3.1.1.2 Shutdown Margin K ~ Any CEA Withdrawn 2) 3.1.1.3 Moderator Temperature Coefficient 3) 3.1.2.7 Boron Dilution Alarms 4) 3.1.3.1 Movable Control Assemblies CEA Position 6) 3.1.3.7 Part Length CEA Insertion Limits 7) 3.2.1 Linear Heat Rate 8) 3.2.3 Azimuthal Power Tilt Tq 9) 3.2.4 DNBR Margin 10) 3.2.7 Axial Shape index 5) 3.1.3.6 Regulating CEA insertion Limits RE PER ATIN LIMIT The cycle-specific operating limits for the specifications listed are presented below.

.1.1.2

h wn Mar in K~ An EA Withdrawn The Shutdown Margin shall be greater than or equal to that shown in Figure 1.

Page 1 of 21

I 0

I

UNIT3 CYCLE3 CORE OPERATING LIMITSREPORT RK PER ATIN LIMIT -

NTIN KD The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown on Figure 2.

2 7

B D'ith 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.

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.

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 IN SERVICE or shown on Figure 5 when the COLSS is ~

OF SERVICE.

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

The linear heat rate limit of 13.5 kW/ft shall be maintained.

The AZIMUTHALPOWER TILT (T<) shall be less than or equal to the limit in Figure 7 with COLSS IN SERVICE.

Page 2 of21

0'

UNIT3 CYCLE3 CORE OPERATING LIMITSREPORT RE PER TI I IMIT -

N ED 4

D B M

COLSS IN SERVICE and Both CEAC's INOPERABLE Maintaining COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 8.

COLSS OUT OF SERVICE and Either One or Both CEAC's are OPERABLE Operating within the region of acceptable operation of Figure 9 using any operable CPC channel.

COLSS OUT OF SERVICE and CEAC's INOPERABLE Operating within the region of acceptable operation of Figure 10 using any operable CPC channel.

The core average AXIAL SHAPE INDEX (ASI) shall be maintained within the following limits:

COLSS OPERABLE

-0.27 5 ASI 5 0.27 COLSS OUT OF SERVICE (CPC)

-0.20 5 ASI 5 0.20 Page 3 of21

0 0'

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT EFERE E

1.

"C-E Method for Control Element Assembly Ejection Analysis,"

CENPD-190-A, January, 1976.

2.

"The ROCS and DIT Computer Codes for Nuclear Design,"

CENPD-266-P-A, April, 1983.

3.

"INCA/CECOR Power Peaking Uncertainty," CENPD-153-P, Revision 1-P-A, May, 1980.

4.

"Safety Evaluation Report Related to the Final Design of the 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).

5.

"Modified Statistical Combination of Uncertainties,"

CEN-356(V)-P-A Revision 01-P-A, May, 1988.

Page 4 of21

4 f'I I

0

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT I T F

1.

Shutdown Margin Versus Cold Leg Temperature.

2.

Allowable MTCModes 1 and 2.

3.

Core Power LimitAfterCEA Deviation.

4.

CEA Insertion Limitsvs Thermal Power (COLSS In Service).

5.

CEA Insertion Limitsvs Thermal Power (COLSS Out ofService) 6.

Part Length CEA Insertion Limitvs Thermal Power, 7

Azimuthal Power TiltLimitvs Thermal Power (COLSS In Service).

8.

COLSS DNBRPower Operating LimitAllowance forBoth CEACs Inoperable.

t

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

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

Page 5 of 21

e

UNIT3 CYCLE3 CORE OPERATING LIMITSREPORT (500, 6.5)

REGIO OF ACCEPTABLE OPERATION (350 4.0)

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

FIGURE 1 SHUTDOWNMARGINVERSUS COLD LEG TEMPERATURE Page 6 of21

0

]

I 0'

0.5 (0%, 0.5)

(100%, 0.0)

-0.5

-1.5 ALLOWABLEMTC

-2

-2.5

-3 (0%, -2.8)

-3.5 10 20 30 40 50 60 70 CORE POWER LEVEL,% OF RATED THERMALPOWER I

80 (100%, -3.5) 90

if l

)

I l (]

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT CORE POWER LIMITAFTER CEA DEVIATION*

30 0

Qo

< I 2o 10 (60 MIN,20%)

P40

@o 0

10 20 30 50 60 TIMEAFTERDEVIATION,MINUTES

WHEN CORE POWER IS REDUCED TO 55% OF RATEDTHERMAL POWER PER THIS LIMITCURVE, FURTHER REDUCTION IS NOTREQUIRED Page 8 of21

~

1.0 FIGURE 4 CEA INSERTIONLIMITSVERSUS THERMALPOWER (COLSS INSERVICE) 0.9 0.8 0R o>

07 0

0.6 O

Oo5 0.4 o

0.3 0.2 0.1 p l o s M

o oI N

S INS ON Ch CO

'V 0.0 150 120 GROUP 5 GROUP 3 90 60 30 0

150 120 90 60 GROUP 1 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)

~

i

1.0 FIGURE 5 CEA INSERTION LIMITSVERSUS THERMALPOWER (COLSS OUT OF SERVICE) 0.9 0.8 A

0.7 0Ro 0.6 0.5 0.4 O

OO pi ca 0.3 0.2 0.1 0.0 GROUP 5 GROUP 3 GROUP1 150 120 90 60 30 0

150 120 90 60 30 0

GROUP 4 GROUP2 150 120 90 60 30 0

150 120 90 60 30 0

CEA POSITION (INCHES WITHDRAWN)

0 1

0

1.00 i

0.90 0.80 A

g 0.70 0

o 0.60 9a 0.50 0

g WA 45% RATEDTHECALPOWER) 0.40 0.30 0

g 0.20 0.10 0.00 CO C)

V)

OO O

O 0

0 O

0 0

PART LENGTHCEA POSITION, INCHES WITHDRAWN

0 I

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT FIGURE 7 (COLSS INSERVICE) 90 60 N

so REGION OF UNACCEPTABLE OPERATION 40 30 20 10 REGION OP ACCEPI'ABLEOPERAHON 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMALPOWER Page 12 of 21

0

UNIT3 CYCLE 3 CORE OPERATING LMITSREPORT FIGURE 8 COLSS DNBRPOWER OPERATING LIMIT ALLOWANCEFOR BOTH CEACs INOPERABLE 20% @ 95%

POWER 0

C4 50 A

0 25 20 15 10 5

COLSS DNBRPOWER OPERATING LIMITREDUCTION

(% OF RATEDTHERMALPOWER)

Page 13 of 21

lf il 1

J

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT 2.5 COLSS OUT OF SERVICE DNBRLIMITLINE 2.4 ACCEPTABLE OPERATION 2.3 MINIMUM1 CEAC OPERABLE (0.2, 2.20)

O~ 21 V

(-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 FIGURE 9 DNBR MARGINOPERATING LIMITBASED ON CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEACs OPERABLE)

Page 14 of 21

0

'I 0!

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT 2.6 COLSS OUT OF SERVICE DNBRLIMITLINE 2.5 ACCEPTABLE OPERATION CEACs INOPERABLE 2.4 (0.05, 2.45)

(0.2, 2.45) 2.3 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 FIGURE 10 DNBRMARGINOPERATING LIMITBASED ON CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEACs INOPERABLE)

Page15 of21

0 0

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT I T FTABLE 1.

Required Monitoring Frequencies forBackup Boron DilutionDetection as a Function of Operating Charging Pumps and Plant Operational Modes forK g> 0.98.

2.

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

3.

Required Monitoring Frequencies forBackup Boron DilutionDetection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 2 K g > 0.96.

4.

Required Monitoring Frequencies forBackup Boron DilutionDetection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 2 K,g> 0.95.

5.

Required Monitoring Frequencies forBackup Boron DilutionDetection as a Function of Operating Charging Pumps and Plant Operational Modes forK g 5 0.95.

Page 16 of21

'l 0

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT TABLE 1 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTION OF OPERATING CHARGINGPUMPS ANDPLANTOPERATIONALMODES FOR K tf) 0.98 OPERATIONAL MODE Number ofOperating Charging Pumps 0

1 2

4 not on SCS 5noton SCS 4%5onSCS 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 12 hours S hours 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 17 of 21

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT TABLE2 REQUIRED MO~ORING FREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTIONOF OPERATING CHARGINGPUMPS ANDPLANTOPERATIONALMODES FOR 0.98 > K g > 0.97 OPERATIONAL MODE Number ofOperating Charging Pumps 0

1 2

4noton SCS 5 not on SCS 4A 5 onSCS 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 hours 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 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 18 of 21

0

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT TABLE3 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTIONOF OPERATING CHARGINGPUMPS ANDPLANTOPERATIONALMODES FOR 0 97~ Kcg> 0 96 OPERATIONAL MODE Number ofOperating Charging Pumps 0

1 2

3 4 not on SCS 5 not on SCS 4A 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 19 of 21

0

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT TABLE4 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTIONAS AFUNCTION OF OPERATING

~GING PUMPS ANDPLANTOPERATIONALMODES FOR 0.96 2 K g) 0.95 OPERATIONAL MODE Number ofOperating Charging Pumps 1

2 4noton SCS 5 not on SCS 4ASonSCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2 hours 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 5 hours 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 1 hour 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 5 hours 2hours 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 8 hours 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 Notes:

SCS = Shutdown Cooling System ONA= Operation Not Allowed Page 20 of 21

UNIT3 CYCLE 3 CORE OPERATING LIMITSREPORT TABLE5 REQUIRED MONITORINGFREQUENCIES FOR BACKUPBORON DILUTIONDETECTION AS AFUNCTIONOF OPERATING CHARGINGPUMPS ANDPLANTOPERATIONALMODES FOR K g 5 0.95 OPERATIONAL MODE Number ofOperating Charging Pumps 0

1 4noton SCS 5 not on SCS 4ASonSCS 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 3 hours 1.5 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 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 12 hours 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months 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 12 hours 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months 3 hours 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 24 hours 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 21 of 21

ML17306A604

Text

Navigation menu

Search