Text

Core Operating Limits Reports (Colr), Unit 1- Revision 13, Unit 2- Revision 12, and Unit 3- Revision 15
	ML051380426
Person / Time
Site:	Palo Verde ; (NPF-041, NPF-051, NPF-074)
Issue date:	04/28/2005
From:	Seaman C; Arizona Public Service Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	102-05269-CKS/TNW/JAP
	Download: ML051380426 (80)
	v • d • e

Technical Specification 5.6.5.d LAPS A

subsidiary of Pinnacle West Capital Corporation Craig K. Seaman

Director, Regulatory Affairs Tel.

Palo Verde Nuclear Fax Generating Station CSe 623-393-5421 623-393-5442 aman@anpsc.com Mail Station 7636 P.O. Box52034 Phoenix, Arizona 85072-2034 102-05269-CKS/TNW/JAP April 28, 2005 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Dear Sirs:

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528/5291530 Core Operating Limits Reports (COLR), Unit 1-Revision 13, Unit 2-Revision 12, and Unit 3-Revision 15 Pursuant to PVNGS Technical Specifications, Section 5.6.5.d, enclosed is Unit 1-Revision 13, Unit 2-Revision 12, and Unit 3-Revision 15 COLRs, which were made effective on April 20, 2005. Revisions of all three COLRs consist of defining 'fully withdrawn' for Control Element Assemblies (CEAs) and modifying the power level applicability for Axial Shape Index (ASI) to be consistent with that of the Technical Specifications. Additionally for Units 1 and 2 COLRs, clarity was added to the defined purpose of the analytical methods listed in the COLRs. Finally, changes specific to Unit 2 COLR only consist of wording changes associated with Part Strength CEAs and revisions to Azimuthal Power Tilt.

These revisions replace the previous Unit 1 (Revision 12), Unit 2 (Revision 11), and Unit 3 (Revision 14) COLRs.

This letter does not make any commitments to the NRC.

Please contact Thomas N. Weber at (623) 393-5764 if you have any questions or require additional information.

a.ncerd CKSITNW/JAP/ca

-t Enclosure fcbi cc:

B. S. Mallett M. B. Fields G. G. Warnick A member of the NRC Region IV Regional Administrator NRC NRR Project Manager for PVNGS NRC Senior Resident Inspector for PVNGS STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

Comanche Peak

Diablo Canyon

Palo Verde

South Texas Project

Wolf Creek

Enclosure Core Operating Limits Reports for PVNGS Unit 1-Revision 13, Unit 2-Revision 12, and Unit 3-Revision 15

Revision 13 PVNGS UNIT I CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 1 Revision 13 Responsible Engineer Digitally signed by: Foster, Glenn A Date (Z35831)

Date: 04/19/2005 16:33:09 Reason: I am the author of this document Location: PVNGS Independent Reviewer Digitally signed by: Trimble, Patrick C Date (Z95337)

Date: 04/1912005 17:00:24 Reason: I have reviewed this document Location: PVNGS Responsible Section Leader Digitally signed by: Cannon, Thomas C Date (Z20485)

Date: 04/1912005 17:02:12 Reason: I am approving this document Location: PVNGS Page 1

Revision 13 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table of Contents Description Cover Page Table of Contents List of Figures List of Tables Affected Technical Specifications Analytical Methods Analytical Methods (continued)

CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.5 Control Element Assembly (CEA) Alignment 3.1.7 Regulating CEA Insertion Limits 3.1.8 Part Strength CEA Insertion Limits 3.2.1 Linear Heat Rate (LHR) 3.2.3 Azimuthal Power Tilt (Tq) 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 3.2.5 Axial Shape Index (ASI) 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration Revision #

13 13 13 11 11 13 12 13 13 13 13 13 13 13 13 13 13 13 13 Page 1

2 3

4 5

6 7

I 8

8 8

9 9

10 10 10 Page 2

Revision 13 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT List of Figurcs Description Revision #

PaMc Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature 11 11 Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 11 12 Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 11 13 Figure 3.1.5-1 Core Power Limit After CEA Deviation 11 14 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 13 15 (COLSS in Service)

Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power 13 16 (COLSS Out of Service)

Figure 3.1.8-1 Part Strength CEA Insertion Limits Versus Thermal Power 11 17 Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power 11 18 (COLSS in Service)

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 11 19 CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 11 20 Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 11 21 Protection Calculators (COLSS Out of Service, CEACs Inoperable)

Page 3

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT List of Tables Description Revision #

Page Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 11 22 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98 Table 3.3.12-2 Required Monitoring Frequencies for Backup Boron 11 23 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff> 0.97 Table 3.3.12-3 Required Monitoring Frequencies for Backup Boron 11 24 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff> 0.96 Table 3.3.12-4 Required Monitoring Frequencies for Backup Boron 11 25 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff> 0.95 Table 3.3.12-5 Required Monitoring Frequencies for Backup Boron 11 26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95 Page 4

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The. Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Unit 1 Tcchnical Specifications.

AFFECTED PVNGS TECHNICAL SPECIFICATIONS 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.5 Control Element Assembly (CEA) Alignment 3.1.7 Regulating CEA Insertion Limits 3.1.8 Part Strength CEA Insertion Limits 3.2.1 Linear Heat Rate (LHR) 3.2.3 Azimuthal Power Tilt (Tq) 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 3.2.5 Axial Shape Index (ASI) 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration Page 5

Revision 13 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT ANALYTICAL METHODS The COLR contains the complete identification for each of the Technical Specification referenced topical reports (i.e., report number, title, revision, date, and any supplements) that provide the NRC-approved analytical methods used to determine the core operating limits, described in the following documents:

Title Report No.

Rev Date Supplement

1) CE Method for Control Element Assembly Ejection Analysis (13-NOOI-1301-01204-1)

2) The ROCS and DIT Computer Codes for Nuclear Design (13-NOOI-1900-01412-0)

3) Modified Statistical Combination of Uncertainties (13-N001-1303-01747-2)

4) System 80TM Inlet Flow Distribu-tion (13-NOOI-1301-01228-0)

5) Calculative Methods for the CE Large Break LOCA Evaluation Model for the Analysis of CE and W Designed NSSS (13-NOOI-1900-01192-3)

6) Calculative Methods for the CE Small Break LOCA Evaluation Model (13-NO01-1900-01185-3)

7) Fuel Rod Maximum Allowable Pressure (1 3-NOO 1-0201-00026-1)

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-002)

CENPD-0190-A CENPD-266-P-A N.A.

January 1976 N.A.

N.A.

April 1983 CEN-356(V)-P-A 01-P-A (ARI)

May 1988 (April 1996)

N.A.

Enclosure 1-P to LD-82-054 CENPD-132 CENPD-137-P CEN-372-P-A N.A.

N.A.

February 1993 N.A.

March 2001 I-P 4-P-A 2-P-A N.A.

N.A.

April 1998 May 1990 September 1999 Page 6

Revision 12 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Title Report No.

Rev Date Supplement

9) Technical Description Manual for CE-NPD 1

April 2004 N.A.

the CENTS Code 282-P-A (13-NOO1-1303-02349-2 for Vol. 1-4)

Vols. 1-4

10) Implementation of ZIRLOTh CENPD-0 November N.A.

Cladding Material in CE Nuclear 404-P-A 2001 Power Fucl Assembly Designs (13-NOO1-1 900-01329-0)

Page 7

Revision 13 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT The cycle-specific operating limits for the specifications listed are presented below.

3.1.1 - Shutdown Marain (SDM) - Reactor Trip Breakers Open The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1 -1.

3.1.2 - Shutdown Margin (SDM) - Reactor Trip Breakers Closed The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.2-1.

3.1.4 - Moderator Temperature Coefficient (MTC)

The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.

3.1.5 - Control Element Assembly (CEA) Alignment With one or more full-strength or part-strength CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES I and 2 core power reduction is specified in Figure 3.1.5-1.

3.1.7 - Regulating CEA Insertion Limits One or more CEACs OPERABLE: With COILSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits1 shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limitsi shown in Figure 3.1.7-2.2 Regulating Groups 1 and 2 CEAs shall be maintained fully withdrawn 3 while in Modes 1 and 2 (except while performing SR 3.1.5.3).

A reactor power cutback will cause either (Case 1) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with no sequential insertion of additional Regulating Groups (Groups 1, 2, 3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups 1, 2, 3, and 4) being sequentially inserted. In either case, the Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

2 The Separation between Regulating Groups 4 and 5 may be reduced from the 90 inch value specified in Figures 3.1.7-1 and 3.1.7-2 provided that each of the following conditions are satisfied:

a) Regulating Group 4 position is betveen 60 and 150 inches withdrawn.

Page 8

Revision 13 PVNGS UNIT i CORE OPERATING LIMITS REPORT b) Regulating Group 5 position is maintained at least 10 inches lower than Regulating Group 4 position.

c) Both Regulating Group 4 and Regulating Group 5 positions are maintained above the Transient Insertion Limit specified in Figurc 3.1.7-1 (COLSS In Service) or Figure 3.1.7-2 (COLSS Out of Service).

3 Fully withdrawn - >147.75" (Pulse Counter indication) and >145.25" (RSPT indication) 3.1.8 - Part Strength CEA Insertion Limits One or more CEACs OPERABLE: The part strength CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1.

3.2.1 - Linear Heat Rate (LIR)

The linear heat rate limit of 13.1 kW/ft shall be maintained.

3.2.3 - Azimuthal Power Tilt (Tg)

The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 10% with COLSS IN SERVICE when power is greater than 20% and less than or equal to 50%. Additionally, the AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 5% with COLSS IN SERVICE when power is greater than 50%. See Figure 3.2.3-1.

3.2.4 - Departure From Nucleate Boiling Ratio (DNBR)

COLSS IN SERVICE and Both CEACs 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 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 of Figure 3.2.4-3 using any operable CPC channel.

Page 9

Revision 13 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT 3.2.5 - Axial Shape Index (ASI)

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

COLSS OPERABLE

-0.18 <ASI < 0.18 forpower> 50%

-0.28 < ASI < 0.18 for power >20% and < 50%

COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 for power >20%

3.3.12 - Boron Dilution Alarm System (BDAS)

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 3.3.12-1 through 3.3.12-5.

3.9.1 - Boron Concentration The boron concentration of all filled portions ofthe Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration Ž 3000 ppm.

Page 10

PVNGS UNIT I CORE OPERATING LIMiTS REPORT Revision I11 FIGURE 3.1.1 -1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

6 5

-4 z

E z

033 2

0 TrzrI5*gg§*&.

.... X. @..............

REGION OF ACCEPTABLE OPERATION RGION:OF UNACCEPTABLE-OPERATION I

(350,1.0)

Ij 0

100 200

.300 400 COLD LEG TEMPERATURE (F) 500 600 Page 11

PVNGS UNIT I CORE OPERATING'.LIMITS REPORTReionI Revision I.1 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7

6 5

-4 z

z 0 3 U,

(500,6.5)::

REGION OF ACCEPTABLE OPERA-TION--.

(350,4.0)

RE GION OF UJNACCEPTABLE OPERATION F..............

2 1

0 0

100 200 300 400 COLD LEG TEMPERATURE (TF) 500

.600 Page 12

PVNGS UNIT I CORE OPERATING LIMITS REPORT FIGURE 3.1.4-1 Revision II MTC ACCEPTABLE -OPERATION, MODES 1 AND 2 0.5 0.0 Q

0 C-1140 I-z w

VItw 0Uw w

04

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

-wall.

A T

T.....

(o%.o.P'.

(

,o100%

(50%, 0.0)

(100%,-0.2 C~i:.ATO,.................

-4.0

-4.5 0

10 20 30 40 50 60 70 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 80 90 100 End of Cycle Limit Beginning of Cycle Limit......

TECH SPEC 3.1.4 Maximum Upper Limit -Implies$

- Page 13

PVNGS UNIT I CORE OPERATING :LIMITS REPORT Revision 1I1 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30 25

.6 MIN

'0,0'.

z 0r-I u C4 Z:) w 0 '>

WO C4 0.

cd '.j 7-Ind 0r,"

w (Y

w

LL 2 0 a ZF-E z5

20

.15 10 i

/

,r

/

i

. /

s

/

s:

{

K

/

,^

/

ss s

/

s s.............

l,

,jo

/

.. /

s s

o:

/

9

/

9

/

i s

,^-

.- - ?. - - -. - *-- - - - -

./

/

/,

/

s s

O( l o M tN. o.o9) f

.w.g.@

-I*

,*s-I*

I I

I 5

0 0

10 20 30 40 50 60 TIME AFTER DEVIATION, MINUTES

WHEN CORE POWER IS REDUCED TO 55% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED.

Page 14

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision 13 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0 0.9 0.8 D.-

C:E 0

z0 t

0.7 0.6 0.5 0.4 0.3

.i

......(SEEKFOOTQOTENO N SECTION 3.1.7-...-..

FOR APPLICA;BL}.TU FOLLOWING.

A...

A REACTOR CUTBiACK) i i

!OS(725FRAC-PWR)+25S

. I GRP5POS=(1725xxFkAC.A R)-64.5

°.. :

\\

c~z z

ECt*

\\Z i

............,.,......, \\e,,

i,i-;................

o.2

_~ 0 S

.j c

I

° jl

\\.

i tD 2,

v...

j i

0.2 0.1 0.0 GROUPS GROUP3 GROUP I I.

i i

I I

i i

I I

I i

i i

I I

I FW* 120 90 60 30 0 FW* 120 90 60 30 0 FW* 120 90 60 30 0

GROUP 4 GROUP 2 1b 10 6b 30

) F0 X*

tO 0 JO 3J CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn is defined as >147.75" (Pulse Counter) and >145.25" (RSPT)

Page 15

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision 13 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 1.0 0.9 0.8 04 0C.93 cd 0.7 0.6 0.5 0.4 0.3 N

EINSE-CTION3 FOR APPLICABiLftY FOLLOWING

.AlREACTOR CUTBACK

.z G...RP4P

4. G

-PS-=(250.9 -iFRAC;-PWR 9

.~~~

zGRP

5. POS =(250.9 Xc FRAC. PNVVR

- 80:.18 i

i i

i o 3 i P

18

-o l o

\\

u

\\

i 0.2 0.1 0.0 GROUP 5 GROUP 3 GROUP I i

i I

i i

I I

F1,Y* 120 90 60 30 0 FW* 120 90 60 30 0 FW* 120 90 60 30 0

GROUP 4 GROUP 2 Ft 1 A0 90 6t 3 3 0 6 120 0

80 o

0 CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn is defined as >147.75" (Pulse Counter) and >145.25" (RSPT)

Page 16

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision Il1 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER z

0.

0 0

wn 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.(

120.0 130.0 140.0 150.0

'TRANSIENT INSERTION LIMIT (75.0 -1NCHES)

.......OPERA-TION............ :.........OPERATION~......

'UNACCEPTABLE RESTRICTED i

i

'n t

m...

LONG TERM STEADY STATE INSERTION-LIM]TS' (1 12.5 INCHE.S)

OPERATION ACCEPTABLE I

1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 FRACTION OF RATED THERMAL POWER 0.1 0.0 Page 17

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision I I FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 10.0 H

E_

1:4 0

N REGION OF UNACCEPTABLE OPERATION REGION OF ACCEPTABLE OPERATION

,*.1I*.*.

I.**.1

.1

~..........It Ie 5.0 0.0' 20

.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 18

PVNGS UNIT I CORE OPERATING LIMITS REPORT Rvso Revision II FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE z2 0

LZD WC,,

0 rU 25 20 15 10 5

(20,95.0)

(0.0,75.0 0

0 25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

.Page 19

2).

2.

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) s.,,,.,,,.,..,,.

ACCEPTABLE OPRTION ANY POWER LEVEL 4.,

MINIMUM OF 1'CEAC OPERAB

.3.................- -- ---- -...., '.....................................................................

~0.02.2.38)

(-0.1^(0.1,2

.38 A

.3

.a ACCEPTABLE OPERTION POWER AT OR ABOVE 90 %

........... a4._

MINIMIUM OF 1'CEAC OPERABLI; (0;05j2.03)

. 0......................

,.,..........,.,, 0 2203

' (0.11.9?

UNACCEPTsABLE

.9.

OPERATI N `--------

X *

a

-a 21**X b192bles1l~esel199l@s~slg*5ewssew9w2B~ew~a 11 C4 U

2.

2 I

-0.20

-0.15

-0.10

-0.05 0.00 0.05 CORE AVERAGE ASI 0.10 0.15 0.20 Page 20

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revisior FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 11I 3.0 3.5 3.4

_..~~~

~........

z V

V 3.3 3.2 1.

1 l..

AY: POE.EE LAACCEPTAB LE OEATO OPERATIO 3.1 I.......

-Z nI 0

-0.20

-0.15

-0.10

-0.05 0.00 0.05 CORE AVERAGE ASI 0.10 0.15 0.20

. Page 21

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff> 0.98 OPERATIONAL Number of Operating Charging Purnps MODE 0

1 2

3 3

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 4 not on SCS 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 5 not 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 4 & 5 on SCS ONA ONA ONA ONA Notes:

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

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 2 Keff> 0.97 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 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 Notes:

SCS Shutdown Cooling System ONA = Operation Not Allowed Page 23

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 2 Keff> 0.96 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 I hour ONA 4 not on SCS 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months I hour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 & 5 onSCS 8hours 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA ONA Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24.

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 2 Keff> 0.95 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 3 hours I hour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 not on SCS 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 25

Revision 11 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff < 0.95 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2 hours 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months ONA 6

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 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 26

Revision 12 PNYNGS UNIT 2 CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 Revision 12 Responsible Engineer Digitally signed by: Foster, Glenn A Date (Z35831)

Date: 04/19/2005 16:52:26 Reason: I am the author of this document Location: PVNGS Independent Reviewer Digitally signed by: Trimble, Patrick C Date (Z95337)

Date: 04/19/2005 17:09:22 Reason: I have reviewed this document Location: PVNGS Responsible Section Leader Digitally signed by: Cannon, Thomas C Date (Z20485)

Date: 04/19/2005 17:12:08 Reason: I am approving this document Location: PVNGS Page I of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table of Contents Description Cover Page Table of Contents List of Figures List of Tables Affected Technical Specifications Analytical Methods Analytical Methods (continued)

CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.5 Control Element Assembly (CEA) Alignment 3.1.7 Regulating CEA Insertion Limits 3.1.8 Part Strength CEA Insertion Limits 3.2.1 Linear Heat Rate (LHR) 3.2.3 Azimuthal Power Tilt (Tq) 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 3.2.5 Axial Shape Index (ASI) 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration Revision #

12 12 12 8

12 12 11 12 12 12 12 12 12 12 12 12 12 12 12 Pagie 1

2 3

4 5

6 7

l 8

8 8

9 9

10 10 10 I

Page 2 of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT List of Figures Description Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 Figure 3.1.5-1 Core Power Limit After CEA Deviation Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power (COLSS in Service)

Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)

Figure 3.1.8-1 Part Strength CEA Insertion Limits Versus Thermal Power Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both CEACs Inoperable In Any Operable CPC Channel Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC(s)

Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, Both CEACs Inoperable In Any Operable CPC Channel)

Revision #

8 8

12 12 12 12 9

9 9

Page 11 12 13 14 15 16 17 18 19 20 21 Page 3 of 26

Revision 8 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT List of Tables Description Revision #

Page Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 8

22 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff 0.98 Table 3.3.12-2 Required Monitoring Frequencies for Backup Boron 8

23 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff> 0.97 Table 3.3.12-3 Required Monitoring Frequencies for Backup Boron 8

24 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff> 0.96 Table 3.3.12-4 Required Monitoring Frequencies for Backup Boron 8

25 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff> 0.95 Table 3.3.12-5 Required Monitoring Frequencies for Backup Boron 8

26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff< 0.95 Page 4 of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Unit 2 Technical Specifications.

AFFECTED PVNGS TECHNICAL SPECIFICATIONS 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.5 Control Element Assembly (CEA) Alignment 3.1.7 Regulating CEA Insertion Limits 3.1.8 Part Strength CEA Insertion Limits 3.2.1 Linear Heat Rate (LHR) 3.2.3 Azimuthal Power Tilt (Tq) 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 3.2.5 Axial Shape Index (ASI) 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration Page 5 of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT ANALYTICAL METHODS The COLR contains the complete identification for each of the Technical Specification referenced topical reports (i.e., report number, title, revision, date, and any supplements) that provide the NRC-approved analytical methods used to determine the core operating limits, described in the following documents:

Title Report No.

Rev Date Supplement

1) CE Method for Control Element Assembly Ejection Analysis (13-NOO1-1301-01204-1)

2) The ROCS and DIT Computer Codes for Nuclear Design (13-N001-1900-01412-0)

3) Modified Statistical Combination of Uncertainties (1 3-N001-1 303-01747-2)

4) System 8 0TM Inlet Flow Distribu-tion (1 3-NOOI-1301-01228-0)

5) Calculative Methods for the CE Large Break LOCA Evaluation Model for the Analysis of CE and W Designed NSSS (13-NOOI-1900-01192-3)

6) Calculative Methods for the CE Small Break LOCA Evaluation Model (13-NOOI-1900-01185-3)

7) Fuel Rod Maximum Allowable Pressure (13-NO01 -0201-00026-1)

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-002)

CENPD-0190-A CENPD-266-P-A N.A.

January 1976 N.A.

N.A.

April 1983 CEN-356(V)-P-A Enclosure 1-P to LD-82-054 01-P-A (ARI)

May 1988 (April 1996)

N.A.

I-P N.A.

February 1993 CENPD-132 CENPD-137-P CEN-372-P-A N.A.

N.A.

March 2001 N.A.

N.A.

April 1998 May 1990 4-P-A 2-P-A N.A.

N.A.

September 1999 Page 6 of 26

Revision 11 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Title Report No.

Rev Date Supplement

9) Technical Description Manual for the CENTS Code (13-N001-1303-02349-2 for Vol. 1-4)

10) Implementation of ZIRLOThI Cladding Material in CE Nuclear Power Fuel Assembly Designs (1 3-NOO1-1900-01329-0)

CE-NPD 282-P-A Vols. 1-4 CENPD-404-P-A 1

April 2004 0

November 2001 N.A.

N.A.

Page 7 of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT The cycle-specific operating limits for the specifications listed are presented below.

3.1.1 - Shutdown Margin (SDM) - Reactor Trip Breakers Open The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1. 1-1.

3.1.2 - Shutdown Margin (SDM) - Reactor Trip Breakers Closed The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.2-1.

3.1.4 - Moderator Temperature Coefficient (MTC)

The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.

3.1.5 - Control Element Assembly (CEA) Alignment With one or more full-strength or part-strength 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 3.1.5-1.

3.1.7 - Regulatina CEA Insertion Limits With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits' shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits' shown in Figure 3.1.7-2.2 Regulating Groups 1 and 2 CEAs shall be maintained fully withdrawn3 while in Modes 1 and 2 (except while performing SR 3.1.5.3).

l A reactor power cutback will cause either (Case 1) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with no sequential insertion of additional Regulating Groups (Groups 1, 2, 3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups 1, 2, 3, and 4) being sequentially inserted. In either case, the Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

2 The Separation between Regulating Groups 4 and 5 may be reduced from the 90 inch value specified in Figures 3.1.7-1 and 3.1.7-2 provided that each of the following conditions are satisfied:

Page 8 of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT a) Regulating Group 4 position is between 60 and 150 inches withdrawn.

b) Regulating Group 5 position is maintained at least 10 inches lower than Regulating Group 4 position.

c) Both Regulating Group 4 and Regulating Group 5 positions are maintained above the Transient Insertion Limit specified in Figure 3.1.7-1 (COLSS In Service) or Figure 3.1.7-2 (COLSS Out of Service).

3 Fully withdrawn - >147.75" (Pulse Counter indication) and >145.25" (RSPT indication) 3.1.8 - Part Strength CEA Insertion Limits The part strength CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1.

3.2.1 - Linear Heat Rate (LHR)

The linear heat rate limit of 13.1 kW/ft shall be maintained.

3.2.3 - Azimuthal Power Tilt (Tq)

The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 10% with COLSS IN SERVICE when power is greater than 20% and less than or equal to 50%. AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 5% with COLSS IN SERVICE when power is greater than 50%. See Figure 3.2.3-1.

3.2.4 - Departure From Nucleate Boiling Ratio (DNBR)

COLSS IN SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - 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 3.2.4-1.

COLSS OUT OF SERVICE, CEAC(s) OPERABLE - Operating within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

COLSS OUT OF SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Operating within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel with both CEACs INOPERABLE.

Page 9 of 26

Revision 12 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT 3.2.5 - Axial Shape Index (ASI)

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

COLSS OPERABLE

-0.18 5 ASI 5 0.18 for power > 50%

-0.28 < ASI < 0.18 for power >20% and < 50%

COLSS OUT OF SERVICE (CPC)

-0.10 5 ASI 5 0.10 for power >20%

3.3.12 - Boron Dilution Alarm System (BDAS)

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 3.3.12-1 through 3.3.12-5.

3.9.1 - Boron Concentration The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration 2 3000 ppm.

Page 10 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 8 FIGURE 3.1.1 -1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

6 5

v

-. 4 z

z 3 3 2

0 REGION OF(005)

ACCEPTABLE OPERATION RGON OF UACCEPTABLE OPERATION (350.E.0)

.,I j

0 100 200 300 400 COLD LEG TEMPERATURE (-F) 500 600 Page 11 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 8 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED

7...............

I........T. I.........

r I.........

(

6...

.5)

.. I.

6.

/.,

REGION OF ACCEPTABLt 5.

OPERATION.

4 z

j(350,4.0) z 03 d

.REGION OF UNACCEPTABLE

~~~~~~~........................

_OPERATION 0

J.LJ L.L.

L

..I.

I.I.

J.

J...

L.

L..L.J... I.,

I.........

0 100 200 300 400 500 6

COLD LEG TEMPERATURE CF)

00 Page 12 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Rvso Revision 8 FIGURE 3.1.4-1 MTC ACCEPTABLE.OPERATION, MODES I. AND 2 0.5 0.0 FM-z Ei LU LIx 0D CIT Cii 0

0

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5 0%,100%,

~(50%, 0.0)

(100%.-0.2 ACCEP'TABLE OPE RATION........

(0%,-34)

-4.0

-4.5 0

10 20 30 40 50 60 70 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 80 90 100 End of Cycle Limit-Beginning of Cycle Limit ---

TECH SPEC 3.1.4 Maximum Upper Limit....

Page 13 of 26

PVNGS UNIT 2 CORE OPERATING LImITS REPORT Revision 8 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30

'25 z0 09-WO Z

k _

3 :£ O c=

z2 5g 20 15 10

.i..

.6 MIN 200.

5 0

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

WHEN CORE POWER 1S REDUCED TO 55% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED.

Page 14 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision'12 FIGURE 3.1.7-1 CEA INSERTPION LIM[ITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0

.0.9 0.8 0

r_

a z

0.7 0.6 0.5 0.4 0.3

-- (SE~E FOOTNOTE IN SEC-TION 31--.7........

FOR APPLICABILITY FOLL OWVING:

...AMRACTOR C-UTBACK)

P4-POS= (j726: -FRA-CPWNR)q-25.......

z R5O=(72.S!x FRAC ~WR) 4.5 E2 0

0

~..............

0.2 0.1 0.0 GROUP 5 GROUP 3 GROUP 1 i

I I i

i is I i i

i i

! i I

I i FW* 120 90 60 30 FW* 120 90 6030 0FW*120 90 60 30 0 GROUP4 GROUP2 F ~ I 0 )O 6 ) ~31)

A Y O

% i I

CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn is defined as > 147.75" (Pulse Counter) and > 145.25" (RSPT)

Page 15 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 12 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 1.0 0.9 0.8 0-J 0

a C4 0z0 t~

0.7 0.6 0.5 0.4 0.3 F~OR APPLICABILITY FOLLOWING CT.

0

.i I.P (250S9xFRAC-PWR) 92--

ORP 5. P0S (280.9 i FRAC. PWVR)

-8.18

. ',(E-OTOEI EN;---

z

i.

Z iy 0 W.

RE.O=20.S~t.Wt-01

-~7-OZ IOO Z

i n...,f,.

ii

.m>e S.

i i

s><

,\\,

0.2 0.1 0.0 GROUP5 GROUP3 GROUP I I

! II I1

. 11 I I I I. I I Iii i

i i

i FW* 120 90 60 30 0 FW* 120 90 60 30 0 FWV* 120 90 60 30 0

GROUP4 GROUP 2 Ft' I slo 6b) 3t 6

t F

_ 0 (10 3 0 b CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn is defined as >147.75" (Pulse Counter) and >145.25" (RSPT)

Page 16 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 12 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER I

0tz I

uz 0

w u

z 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0 120.0 130.0 140.0 150.0

...... b p F.ii,

.N C,

!TBL TRANIEN INETO II (50]CIS I

.OPERA&TION-;

.RESTRICTED a......a LONG TERMI STEADY STATE INSERTION'LIM1TS: (112.5 INCHES)

OPERATION ACCEPTABLE 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 FRACTION OF RATED THERMAL POWER 0.2 0.1 0.0 Page 17 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 12 I

FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 l...Ia I............

REGION-D.......

F.....

UNACCEPTABLE OPERATION 13-E-0~

10.0 5.0 i

i i

g iREGIQN QF

.... i..,. i....

.XCCEPTABILE I.1.

OPERATION

.i I...

£% ^

I U.U -

20.0 30.0 40.0 50.0 60.0 70.0 80.0 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 90.0 100.0 Page 18 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 9 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL 25 z

0WU' 20 15 10 5

r.

I T.

aU l

§ l I {

b r a r & E X (20,95.0)

~~............

........................................... I........

.~~..................

j----

I 0

0 25 50 75 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 100 Page 19 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 9 FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC(s) OPERABLE) 2.5 2.4 2.3 z

u 2.2 2.1 rr r

i r rm l.........

I

.ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST I CEAC OPERABLE IN EACH 6PERABtE c

rc CAANNEL (0.06,238 (0.1,2.3) a

(-

, 8 ;K................._...........-

(0.122008)a

....... 1----

lCEaAPEOPRTION.

a ATLar1CA OERBEE a-~~l9)

NACCEPTABLEOPRTN a

a

.a a

a AT. LES CEA OPiERABLE 2.0 1.9 11.0

-0.20

-0.15

-0.10

-0.05 0.00 0.05 CORE AVERAGE ASI 0.10 0.15 020 Page 20 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 9 FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL) 3.6 3.5 3.4 z

3.3 z

L)

ACCEPTABLE OPERAT-ION ANY POWER LEVEL

-BOTH CEACs.INOPERABLE. -

IN ANY OPERABLE CPC CHANNEL o

........... --;o()--

I- *--

(-0.1,3.27)

I.

UNACCrEPTABLE OPERATION

_~~~~~

I.

3.2 3.1 1

^

I 3.u

-0.20

-0.15

-0.10

-0.05 0.00 0.05 CORE AVERAGE ASI 0.10 0.15 0.20 Page 21 of 26

Revision 8 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.12-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Kef > 0.98 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 4 not on SCS 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 5 not 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 4 & 5 on SCS ONA ONA ONA ONA Notes:SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 22 of 26

Revision 8 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.12-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 2 Keff > 0.97 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 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 Notes:SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 23 of 26

Revision 8 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.12-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 2 Keff> 0.96 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 I hour ONA 4 not on SCS 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 I hour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 1 hour ONA ONA Notes:SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24 of 26

Revision 8 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.124 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 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 25 of 26

Revision 8 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.12-5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff < 0.95 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2 hours 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months ONA 6

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 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 26 of 26

Revision 15 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 3 Revision 15 Responsible Engineer Digitally signed by: Foster, Glenn A Date (Z35831)

Date: 04/19/2005 17:00:04 Reason: I am the author.of this document Location: PVNGS Independent Reviewer Digitally signed by: Trimble, Patrick C Date (Z95337)

Date: 04/19/2005 17:18:02 Reason: I have reviewed this document Location: PVNGS Responsible Section Leader Digitally signed by: Cannon, Thomas C Date (Z20485)

Date: 04/19/2005 17:19:31 Reason: I am approving this document Location: PVNGS Page 1 of 26

Revision 15 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table of Contents Description Revision #

Pace Cover Page 15 1

Table of Contents 15 2

List of Figures 15 3

List of Tables 11 4

Affected Technical Specifications 14 5

Analytical Methods 14 6

Analytical Methods (continued) 13 7

CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 15 8

3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 15 8

3.1.4 Moderator Temperature Coefficient (MTC) 15 8

3.1.5 Control Element Assembly (CEA) Alignment 15 8

3.1.7 Regulating CEA Insertion Limits 15 8

3.1.8 Part Strength CEA Insertion Limits 15 9

3.2.1 Linear Heat Rate (LHR) 15 9

3.2.3 Azimuthal Power Tilt (Tq) 15 9

3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 15 9

3.2.5 Axial Shape Index (ASI)

.15 10 3.3.12 Boron Dilution Alarm System (BDAS) 15 10 3.9.1 Boron Concentration 15 10 Page 2 of 26

Revision 15 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT List of Figures Description Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes I and 2 Figure 3.1.5-1 Core Power Limit After CEA Deviation Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power (COLSS in Service)

Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)

Figure 3.1.8-1 Part Strength CEA Insertion Limits Versus Thermal Power Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEACs Inoperable)

Revision #

11 11 II 11 15 15 14 14 11 11 11 Page 11 12 13 14 15 16 17 18 19 20 21 Page 3 of 26

Revision 11 PV7NGS UNIT 3 CORE OPERATING LIMITS REPORT List of Tables Description Revision #

Page Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 11 22 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff1 0.98 Table 3.3.12-2 Required Monitoring Frequencies for Backup Boron 11 23 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff> 0.97 Table 3.3.12-3 Required Monitoring Frequencies for Backup Boron 11 24 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff> 0.96 Table 3.3.12-4 Required Monitoring Frequencies for Backup Boron 11 25 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff> 0.95 Table 3.3.12-5 Required Monitoring Frequencies for Backup Boron 11 26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff< 0.95 Page 4 of 26

Revision 14 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Unit 3 Technical Specifications.

AFFECTED PVNNGS TECHINICAL, SPECIFICATIONS 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.5 Control Element Assembly (CEA) Alignment 3.1.7 Regulating CEA Insertion Limits 3.1.8 Part Strength CEA Insertion Limits 3.2.1 Linear Heat Rate (LHR) 3.2.3 Azimuthal Power Tilt (Tq) 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 3.2.5 Axial Shape Index (ASI) 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration Page 5 of 26

Revision 14 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT ANALYTICAL METHODS The COLR contains the complete identification for each of the Technical Specification referenced topical reports (i.e., report number, title, revision, date, and any supplements) that provide the NRC-approved analytical methods used to determine the core operating limits, described in the following documents:

Title Report No.

Rev Date Supplement

1) CE Method for Control Element Assembly Ejection Analysis (13-NO01-1301-01204-1)

2) The ROCS and DIT Computer Codes for Nuclear Design (13-NO01-1900-01412-0)

3) Modified Statistical Combination of Uncertainties (13-N001-1303-01747-2)

4) System 80TM Inlet Flow Distribu-tion (13-NO01-1301-01228-0)

5) Calculative Methods for the CE Large Break LOCA Evaluation Model for the Analysis of CE and W Designed NSSS (13-N00l-1900-01192-3)

6) Calculative Methods for the CE Small Break LOCA Evaluation Model (13-NOOI-1900-01185-3)

7) Fuel Rod Maximum Allowable Pressure (13-NOOI -0201-00026-1)

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-002)

CENPD-0190-A CENPD-266-P-A N.A.

January 1976 N.A.

April 1983 N.A.

N.A.

CEN-356(V)-P-A 01-P-A (ARI)

May 1988 (April 1996)

N.A.

Enclosure I-P to LD-82-054 CENPD-132 CENPD-137-P CEN-372-P-A N.A.

N.A.

February 1993 N.A.

March 2001 1-P 4-P-A 2-P-A N.A.

N.A.

April 1998 May 1990 September 1999 Page 6 of 26

Revision 13 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Title Report No.

Rev Date Supplement N.A.

9) Technical Description Manual for the CENTS Code (13-N001-1303-02349-2 for Vol. 1-4)

CE-NPD 282-P-A Vols. 1-4 I

April 2004

10) Implementation of ZIRLOm Cladding Material in CE Nuclear Power Fuel Assembly Designs (13-NOOI-1900-01329-0)

CENPD-404-P-A 0

November 2001 N.A.

Page 7 of 26

Revision 15 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT The cycle-specific operating limits for the specifications listed arc presented below.

3.1.1 - Shutdown Margin (SDM) - Reactor Trip Breakers Open The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1. 1-1.

3.1.2 - Shutdown Margin (SDM) - Reactor Trip Breakers Closed The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.2-1.

3.1.4 - Moderator Temperature Coefficient (MTC)

The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.

3.1.5 - Control Element Assembly (CEA) Alignment With one or more full-strength or part-strength CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES I and 2 core power reduction is specified in Figure 3.1.5-1.

3.1.7 - Regulating CEA Insertion Limits One or more CEACs OPERABLE: With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits1 shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits1 shown in Figure 3.1.7-2.2 Regulating Groups I and 2 CEAs shall be maintained fully withdrawn3 while in Modes 1 and 2 (except while performing SR 3.1.5.3).

l A reactor power cutback will cause either (Case 1) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with no sequential insertion of additional Regulating Groups (Groups 1, 2, 3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups 1, 2, 3, and 4) being sequentially inserted. In either case, the Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

2 The Separation between Regulating Groups 4 and 5 may be reduced from the 90 inch value specified in Figures 3.1.7-1 and 3.1.7-2 provided that each of the following conditions are satisfied:

a) Regulating Group 4 position is between 60 and 150 inches withdrawn.

Page 8 of 26

Revision 15 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT b) Regulating Group 5 position is maintained at least 10 inches lower than Regulating Group 4 position.

c) Both Regulating Group 4 and Regulating Group 5 positions are maintained above the Transient Insertion Limit specified in Figure 3.1.7-1 (COLSS In Service) or Figure 3.1.7-2 (COLSS Out of Service).

3 Fully withdrawn - >147.75" (Pulse Counter indication) and >145.25" (RSPT indication) 3.1.8 - Part Strength CEA Insertion Limits One or more CEACs OPERABLE: The part strength CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1.

3.2.1 - Linear Heat Rate (LHR!

The linear heat rate limit of 13.1 kW/ft shall be maintained.

3.2.3 - Azimuthal Power Tilt (Tg)

The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 10% with COLSS IN SERVICE when power is greater than 20% and less than or equal to 50%. AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 5% with COLSS IN SERVICE when power is greater than 50%. See Figure 3.2.3-1.

3.2.4 - Departure From Nucleate Boiling Ratio (DNBR)

COLSS IN SERVICE and Both CEACs 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 3.2.4-1.

COLSS OUT OF SERVICE and Either One or Both CEACs arc 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 of Figure 3.2.4-3 using any operable CPC channel.

Page 9 of 26

Revision 15 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT 3.2.5 - Axial Shape Index (ASI)

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

COLSS OPERABLE

-0.18 < ASI < 0.18 for power > 50%

-0.28 < ASI < 0.18 for power >20% and < 50%

COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 for power >20%

3.3.12 - Boron Dilution Alarm System (BDAS)

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 3.3.12-1 through 3.3.12-5.

3.9.1 - Boron Concentration The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration 2 3000 ppm.

Page 10 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision I1 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7...

7...

5..............

REGION OF (500,50)

ACCEPTAILE OPERATION 34........

z C.'

,REGION OF UNACCEPTABLE o

2 ~.

...,.... A.....................................

OPERATION 1

N..-

(350,1.0)

.I.

I.

I..............

n I.......

J 0

100 200 300 400 Soo 600 COLD LEG TEMPERATURE (F)

Page 11 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 11 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED (500,6.5),

REGION OF ACCEPTABLE 5.

OPERATION.-.

e4 Z

(350,4.0) 53 C/2 jEGION OF UNACCEPTABLE OPERATION 0......

0 100 200 300 400 500 600 COLD LEG TEMPERATURE C'F)

Page 12 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 11 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 oz.*s (50%, 9.0 (100%,-0.

0.5 010 D

.0,

-1.

A...........

o ACCEPTABLE

-2.0

,OPEAflON

~~~--

0 CORE...

POER.

LEVEL w

3

-4.0........... --- ---------

e------*

(% OF RATED THERMAL POWER)

End of Cycle Limit Beginning of Cycle Limit TECH SPEC 3.1.4 Maximum Uppcr Limit....

Page 13 of 26

PVN'GS UNIT 3 CORE OPERATING LIMITS REPORT Revision II FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30.Tr 25 z0

60 MIN, 20.0%)

0 0

TIM AFE DEITIN MINTE PWR

.PER T I.

FURTHE REDUCT 15.........

10 0

.......................',/..

0 1 /0 20N 30.4050 TIME AFTER DEVIATION, MINUTES WHEN CORE POWER IS REDUCED TO <55%'OF RATED: THERMAL POW`ER PER THIS LIMIT CURVE.' FURTHER REDUCTION IS NOT REQUIRED.

Page 14 of 26

P.VNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision.15 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0 0.9 0.8 0

.j ca 0

z E

0.7 0.6 0.5 0.4 0.3

. s i

_ *- \\

(EER~IN'(!rE N SE-TIO3.1.7

.FOR APPLICABILITY FOLIbOWING 3

A REACTOR -CUBACK)

.. M.

~RP-4P0S--(j726-5'FRA-C.PWVR-+,25.

GRP 5POS (I72.5;x FRAC. PWR)-64.5 i...

0 i

E i.*ii.!...

z

_,,S,,,.....,.....

......-...... ;.,.'-.i.l.-

o I-.

~:

I

@~. a

0.

i...

-F-

-* I.F-.....

urn*

+/-Ja"..

I '

'I I

t.

.1 1

1

.....L.... ;_

0.2 0.1 0.0 GROUP5 GROUP 3 I

I I

I i

i i

I I

1 GROUP.I I !

I FW* 120 90 60 30 0 FW* 120 90 60 30 0 FW* 120 90 60 30 0

GROUP4 GROUP 2 F1t*11O tO 6b 3b)

.)

1 K* o 0o 6b 30

)

CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn is defined as >147.75" (Pulse Counter) and >145.25" (RSPT)

Page 15 of 26

P-VNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGURE 3.1.7-2 Revision 15 H

w a

C-0zL

.9 t

1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE)

..AREAiCTR CUTBACK).

5

. a 0

ORP 5.P0S=(25O.9 FRAC.P1MR -80118

.~~

~

~ I le s....._.....

. i.......

z.

-I k.....

,.T

\\

i Z

\\

i.

Z z 5.

I.

z

.1

.LP I

PO

= (20 x FRC rw 01 GROUPS i

i i

i 1

GROUP 3 GROUP I i

I I

t I

I I

FW* 120 90 60 30 0 FW* 120 90 60 30 0 FW* 120 90 60 30 0

GROUP 4 GROUP 2 F o J-II 0

6 33 0 z ilŽo 6Io 3b b CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn is defined as >147.75" (Pulse Counter) and >145.25" (RSPT)

Page 16 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 14 C,,

£ z

z 0~

C-,

F-z F-l 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0 120.0 130.0 140.0 150.0 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER I

I I

I I........

T..

..------------- i TRANSIENT INSERTION LIMIT (75.0;INCHES) ii

---t- ---- - -- - - - - - - --- - - - - --- - - -

O P E R AT.O N O.

O,

UNACCEPTABLE RESTRICTED

........... s........

I I................

-c LONG TERM sTEADYSTATE INSERTIONLIMlTS (112.5 1NCHES)

OPERATION ACCEPTABL-E 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 FRACTION OF RATED THERMAL POWER 0.2 0.1 0.0 Page 17 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORTRvsin1 Revision 14 FIGURE 3.2.3-1 AZIM\\UTHAL POWER TILT VERSUS THERMAL POWER (COLS.S IN SERVICE) 20.0 15.0 10.0 5.0

... REGION-OF-UNACCEPTABLE OPERATION REGION OF ACCEPTABLE OPERATION nn I 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 CORE POWER LEVEL

(% OF RATED THERMAL POW.ER)

Page 18 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORTReson1

.Revision I 1 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE 25

Z 0

E-,

0U1 20 15 10 5

(20,95.0)'

(0.0,750 0

0 25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 19 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 11 FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) 2.5 2.4 2.3 z

rU

D 2.2 2.1

~~~~.....

I.., I,.........

ACCEPTABLE OPERATION ANY POWER LE VEL

..'MINEIMUM OF 1.CEAC OPERABL (0 -2,2.3) 1 (0.1,2.38)

.a

(-0.1,2.29) :.

....,................................... ?.............

,U

~~~~~~~~~~....................:................

.MINIMUM OF 1,:CEAC OPERABLgj 1(0.0522.03).

,..,.,ama*

ao**

i.

I MIIU OF 1~CA OPERABLE;,

2.0 1.9 I S I

-0.20

-0.15

-0.10

-0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 20 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revisiot FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED.ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE)

Inll

.5.0 3.5 3.4 z

3.

3.3

(-0 r.,

v....

ACCEPTABLE OPERATION ANY POWER LEVEL CEAC's INOPERABLE

_____(0.13.32)

(0,03.332)

.,3.19)

UNACCEPTABLE

....................... /.(.".3..32)

OPERATION

.m.I.I.:

3.2 3.1

, n I6.

-0.20

-0.15

-0.10

-0.05 0.00 0.05 CORE AVERAGE ASI 0.10 0.15 0.20

. Page 21 of 26

Revision 11 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table 3.3.12-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff> 0.98 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 4 not on SCS 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 5 not 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 4 & 5 on SCS ONA ONA ONA ONA Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 22 of 26

Revision 11 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table 3.3.12-2 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.

OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 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 Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 23 of 26

Revision 11 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table 3.3.12-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 2 Keff > 0.96 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 4 not on SCS 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months I hour ONA ONA Notes:

SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24 of 26

Revision 1 1 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table 3.3.12-4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 2 Keff > 0-95 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 25 of 26

Revision 11 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table 3.3.12-5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff < 0.95 OPERATIONAL Number of Operating Charging Pumps MODE 0

1 2

3 3

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 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 5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-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 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2 hours 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months ONA 6

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 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 26 of 26

Person / Time
ML051380426
Site:	Palo Verde (NPF-041, NPF-051, NPF-074)
Issue date:	04/28/2005
From:	Seaman C Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
102-05269-CKS/TNW/JAP
Download: ML051380426 (80)
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ML051380426

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Dear Sirs:

Subject:

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