Text

Units, 1, 2, & 3, Core Operating Limits Reports (Colr), Unit 1 - Revision 17, Unit 2 - Revision 14 and Unit 3 - Revision 16
	ML061710459
Person / Time
Site:	Palo Verde
Issue date:	06/09/2006
From:	Bauer S; Arizona Public Service Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	102-05514-SAB/TNW/CJJ
	Download: ML061710459 (82)
	v • d • e

Technical Specification 5.6.5.d Scott A. Bauer Tel. 623-393-5978 Mail Station 7636 Palo Verde Nuclear Department Leader, Fax 623-393-5442 PO Box 52034 Generating Station Regulatory Affairs e-mail: sbauer@apsc.com Phoenix, Arizona 85072-2034 102-05514-SABITNW/CJJ June 09, 2006 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 50-52815291530 Core Operating Limits Reports (COLR), Unit I - Revision 17, Unit 2 - Revision-14, and Unit 3 - Revision 16 Pursuant to PVNGS Technical Specifications, Section 5.6.5.d, enclosed is Unit I -

Revision 17, Unit 2 - Revision 14, and Unit 3-Revision 16 COLRs, which were made effective on June 9, 2006. The COLR revisions update the SIMULATE reference under "Analytical Methods,".update the CENTS reference under "Analytical Methods,"

and make editorial changes to establish conformity in wording between the three unit COLR's.

By copy of this letter and the enclosure, these COLR revisions are being provided to the NRC Region IV Administrator and the PVNGS Senior Resident Inspector.

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.

Sincerely, SAB/TNW/CJJ/gt F

cuer

Enclosure:

PVNGS Unit'1 Core Operating Limits Report (C0LR), Revision 17 PVNGS Unit 2 Core Operating Limits Report (COLR), Revision 14 PVNGS Unit 3 Core Operating Limits Report (COLR), Revision 16 cc:

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

Comanche Peak

Diablo Canyon

Palo Verde

South Texas Project 0 Wolf Creek

Enclosure PVNGS Unit I Core Operating Limits Report (COLR)

Revision 17

PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 Responsible Engineer Digiltafly signed by Delorenzl, Resonibl EginerDel ore nZI, Mark J(Z01931)

Date DN:CN-Delorenzi, Mark. J MrJ(Z0193t)

Mark J Reason: I am the author of this document, (ZO1 931)

Date:°2006.06.02 08:00:38 -

Digitally signed by Webb, Independent Reviewer W ebb, James.I.V,08, Date DN: CN = Webb, James R Jam es R Reason: I have reviewed this document.

(V97187)

Date: 2006.06.02 08:17:49

-07'06 SDigitally signed by Cannon, Responsible Section Leader

Cannon, Dithomasic(gn no n Date DN: CN = Cannon. Thomas Thomas C -Reason: I am approving this document.

Date 2006.06.0708:15:34" (Z2048;5) 0' Page 1 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 Table of Contents Description Page Cover Page 1

Table of Contents 2

List of Figures 3

List of Tables 4

Affected Technical Specifications 5

Analytical Methods 6

Analytical Methods (continued) 7 CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 8

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

3.1.4 Moderator Temperature Coefficient (MTC) 8 3.1.5 Control Element Assembly (CEA) Alignment 8

3.1.7 Regulating CEA Insertion Limits 8

3.1.8 Part Strength CEA Insertion Limits 9

3.2.1 Linear Heat Rate (LHR) 9 3.2.3 Azimuthal Power Tilt (Tq) 9 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 9 3.2.5 Axial Shape Index (ASI) 10 3.3.12 Boron Dilution Alarm System (BDAS) 10 3.9.1 Boron Concentration 10 Page 2 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 List of Figures Description Page Figure 3. 1. 1-1 Shutdown Margin Versus Cold Leg Temperature 11 Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 12 Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 13 Figure 3.1.5-1 Core Power Limit After CEA Deviation 14 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 15 (COLSS in Service)

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

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

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

Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 21 Protection Calculators (COLSS Out of Service, Both CEACs Inoperable In Any Operable CPC Channel)

Page 3 of 26

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision 17 List of Tables Description Page Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 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 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 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 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 26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff< 0.95 Page 4 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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 I 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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

1) CE Method for Control Element Assembly Ejection Analysis (13-N001-1301-01204-1)

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

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

4) System 8 0 TM Inlet Flow Distribu-tion (13-N001-1301-01228-0)

5) Calculative Methods for the CE Large Break LOCA Evaluation Model for the Analysis of CE and W Designed NSSS (13-N001-1900-01192-3)

6) Calculative Methods for the CE Small Break LOCA Evaluation Model (13-N001 -1900-01185-3)

7) Fuel Rod Maximum Allowable Pressure (13-NOO1-0201-00026-1)

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-005)

Report No.

CENPD-0190-A CENPD-266-P-A CEN-356(V)-P-A Enclosure 1-P to LD-82-054 CENPD-132 CENPD-137-P Rev Date Supplement N.A.

January 1976 N.A.

N.A.

April 1983 May 1988 (April 1996) 01-P-A (ARI)

N.A.

February 1993 N.A.

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

April 1998 CEN-372-P-A N.A.

May 1990 January 2006 N.A.

N.A.

NFM-005 N.A.

Page 6 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 Title Report No.

Rev Date Supplement

9) Technical Description Manual for the CENTS CodeVolume 1 (CENTS-TD MANUAL-VOL 1)

10) Technical Description Manual for the CENTS Code Volume 2 (CENTS-TD MANUAL-VOL 2)

11) Technical Description Manual for the CENTS CodeVolume 3 (CENTS-TD MANUAL-VOL 3)

12) Implementation of ZIRLOTM Cladding Material in CE Nuclear Power Fuel Assembly Designs (13-NOO1-1900-01329-0)

CE-NPD 282-P-A Vols. 1 CE-NPD 282-P-A Vols. 2 CE-NPD 282-P-A Vols. 3 CENPD-404-P-A 2

March 2005 2

March 2005 0

November 2001 N.A.

N.A.

Page 7 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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 - Regulating CEA Insertion Limits With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limitsI shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulating 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).

1 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.

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

Page 8 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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%. 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 in Any OPERABLE CPC Channel - Maintain 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 CEAC(s) OPERABLE - Operate 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 - Operate 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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 > 3000 ppm.

Page 10 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

6 5

4 z

0.3 2

.(500,5 0 )*

REGION OF ACCEPTABLE OPERATION

........................................................................................S REGION'OF UNACCEPTABLE OPERATION (350,1.0)

......... t.......... I......... !.........

I 0

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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7

6 5

<1

.4 z

I 3

F-,

(500,6.5)1

........................

N o

..................... ii............................................

REGION OF ACCEPTABLE

......-OPERATION (3504.0)

REGION OF UNACCEPTABLE

.[..............................................

OPERATION 2

1 0

0 100 200 300 400 COLD LEG TEMPERATURE (F) 500 600 Page 12 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES I AND 2 0.

rZ 0

Lu LI./

C-1 u.e o

L:

0 2

0.5 0.0

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

-4.0

-4.5

" L*

T..*

" I

. I........

I....

el e

° # el l e e 1

(50%~.0.0)

(100%-0.2 (0.

5

...........-.......... '. *.?.. :....

o.o....

TC..

AR ACCEPTABIlE OPERATION

(.......................................

3.....................................................4.............)............

-(0%,-3./I i

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 I CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30 25 p-

-U-20 15 10 (60 MNIN 20.0%)

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

(IOMIN 0-K) 5 0

0 I0 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 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 0 0

1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 00 (SEEFOOTNOTEINSECTION 3*!7..............

FOR APPLICA3BILITY FOLLOWING A REACTOR CUTBACK).......................

.... ".G...

RP 4 POS -(72.5 FRAC -PWRI ) 25..

SGRP 5 POS= (i72.51x FRAC. 'WR) - 64.5 Z

0.d p*

L 4z Mz rz

~. F-.

L O

0 00.

ceo:I L

J, I I 1

1...

v.

GROUP5 GROUP3 GROUP 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

GROUP4 GROUP 2 FoF*0 6

3+

tW 3+0 CEA POSITION (INCHES WITHDRAWN)

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

Page 15 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE)

W.L 2

-j 0z0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0

(.......................................SEE

-FOOTNOTE-IN SECTION 3. i FOR APPIICAII LITY' FOLI OW INGG

........... REACTOR cRC1 BT ACK).......

0 d:1 I.......

GRP 4 POS

.(250.9 FRC.PR+

2---

)

GRP P0S = (250.9 FRAC. PWR) - 80.18 z...

..I.- --*......

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

......... i........ i........ i...............................................................

i I

J I

! I I

I IL

[

I I

I t

GROUP5 GROUP3 GROUP 1 I I I I i I I i I I I I I I I I I I F\\V* 120 90 60 30 0 FW* 120 90 60 30 0 FW* 120 90 60 30 0

GROUP4 GROUP2 CEA POSITION (INCHES WITTIDRAWN)

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

Page 16 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER z

z 0

0 z

I-C-}

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 I.

I.

I

.......... ]............................. [........................... i............-...........

..............................................................................i

....................... i.........

TRANSIENT INSERTIO\\ LIMIT (75.0.INC1II.S)

.OPERATION OPERATION UJNACCEITABLE RESTRICTED

.......... !......................... r.............

LONG TERM STEADY STATE INSERTION:LIMITS' (112.5 INCHES) i.............

i............

i.............

i..............i...........

i...........

'OPERATION ACCEPTABLE

......................... 4.............

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

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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0

-R E G IO N O F.

UNACCEPTABLE OPERATION

>1 0

10.0 5.0 I.....

T.................................

REGION OF t I

iCCEPTABLEiOPERATION 1*, I I

u.u 20.0 30.0 40.0 50.0 60.0 70.0 CORE POWER LEVEL 80.0 90.0 100.0

(% OF RATED THERMAL POWER)

Page 18 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL Revision 17 25 20 (95,20) 0 0-z 0

0c-15 I0

.ii i i i i i i i i i i i.i i i i i i.i i i i i i i i.i i....

............,.....,.. f '?, t....

5 0

0 25 50 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 75 100 Page 19 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 2.5 2.4 2.3 z

C.4 FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC(s) OPERABLE)

I.

I I.......

ACCEITABLE OPERATION ANY POWER LEVEL AT LEAST I CEAC OPERABLE IN EACH OPERABTIE CPC CIIANNEL

.............. i............................................................

(0.06,2.38)

(0.1.2.38):

(9.01,2.28)

ACCEPTABLEF OPERATION POWER AT OR ABOVE 90%

AT LEAST 1 CEAC OPERABLE IN EACH OPERABIE CPC CHANNEIA................

(0.05.2.00)

(0,1a 00)...........

00' (01l!

93)

UNACCEPTABLE

................ : O P E R A T IO N....................................................

LLL,.....

I L1........ I L L........

I..

I i......... I u.z........ I.J.W.J.... I z........

2.1 2.0 [

1.9 1.8-0,:20

-0.15

-0.10

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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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

1 ACCEPTABLE OPERATION ANY POWER LEVEL BOTH CEACs INOPERABLE IN CHANNEL

.3.27)

I$ll 3.4 F-z C-,

u 3.3 3.2

(-0.1 UNACCEPITABLE OPERATION t.

3.1 I

3.0

-0.2 g.........

I 20

-0.15

-0.10

-0.05 0.00 0.0 CORE AVERAGE ASI S......

0 0......

20

)5 0.10 0.15 0.20 Page 21 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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 Ž 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

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision 17 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 Ž 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 1 hour ONA ONA Notes:

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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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 0.96Ž> 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 17 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 I hour 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

Enclosure PVNGS Unit 2 Core Operating Limits Report (COLR)

Revision 14

Revision 14 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 Revision 14 Digitally signed by Responsible Engineer Delorenzi, Delorenzi, Mark J(ZO1931)

Date DN: CN = Delorenzi, Mark J Mark J Reason: I am the author of this document.

(ZO

/

Date: 2006.06.0114:38:37.-

(Z01931) o 0*0'o'ae°°°°"3:"

Digitally signed by Webb, Independent Reviewer James R(V97187)

Date DN: CN = Webb, James R James R Reason: I have reviewed this document.

Date: 2006.06.02 08:19:05 (V97187) 07'005 Responsible Section Leader CDigitally signed by Cannon, Respnsile Sctin LederThomas C(Z2048.5)

Date

Cannon, DN: CN = Cannon, Thomas Thomas C' am approving this document.

Z20485 Date: 2006.06.07 08:18:54-

Z0 8ý)

OT0O00 Page 1 of 26

Revision 14 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table of Contents Description Pane Cover Page 1

Table of Contents 2

List of Figures 3

List of Tables 4

Affected Technical Specifications 5

Analytical Methods 6

Analytical Methods (continued) 7 CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 8

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

3.1.4 Moderator Temperature Coefficient (MTC) 8 3.1.5 Control Element Assembly (CEA) Alignment 8

3.1.7 Regulating CEA Insertion Limits 8

3.1.8 Part Strength CEA Insertion Limits 9

3.2.1 Linear Heat Rate (LHR) 9 3.2.3 Azimuthal Power Tilt (Tq) 9 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 9 3.2.5 Axial Shape Index (ASI) 10 3.3.12 Boron Dilution Alarm System (BDAS) 10 3.9.1 Boron Concentration 10 Page 2 of 26

Revision 14 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT List of Figures Description Page Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature 11 Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 12 Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 13 Figure 3.1.5-1 Core Power Limit After CEA Deviation 14 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 15 (COLSS in Service)

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

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

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

Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 21 Protection Calculators (COLSS Out of Service, Both CEACs Inoperable In Any Operable CPC Channel)

Page 3 of 26

Revision 14 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT List of Tables Description Page Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 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 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 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 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 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 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 14 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 (1 3-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 (13-N001-1 303-01747-2)

4) System 8 0TM 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-NOO-1900-01192-3)

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

7) Fuel Rod Maximum Allowable Pressure (13-N00-0201-00026-1)

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-005)

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

January 1976 N.A.

N.A.

April 1983 May 1988 (April 1996)

CEN-356(V)-P-A Enclosure 1-P to LD-82-054 CENPD-132 CENPD-137-P CEN-372-P-A 01-P-A (AR1)

N.A.

February 1993 N.A.

March 2001 N.A.

N.A.

April 1998 May 1990 1-P 4-P-A 2-P-A N.A.

N.A.

NFM-005 N.A.

January 2006 Page 6 of 26

Revision 14 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Title Report No.

Rev Date Supplement

9) Technical Description Manual for the CENTS CodeVolume 1 (CENTS-TD MANUAL-VOL 1)

10) Technical Description Manual for the CENTS Code Volume 2 (CENTS-TD MANUAL-VOL 2)

11) Technical Description Manual for the CENTS CodeVolume 3 (CENTS-TD MANUAL-VOL 3)

12) Implementation of ZIRLOTM Cladding Material in CE Nuclear Power Fuel Assembly Designs (13-N001-1900-01329-0)

CE-NPD 282-P-A Vols. 1 CE-NPD 282-P-A Vols. 2 CE-NPD 282-P-A Vols. 3 CENPD-404-P-A 2

March 2005 2

March 2005 0

November 2001 N.A.

N.A.

Page 7 of 26

Revision 14 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 - Regulating CEA Insertion Limits With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limitsI shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits1 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).

1 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 14 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 (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%. 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 - Maintain 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 CEAC(s) OPERABLE - Operate 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 - Operate 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 14 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 _* 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 > 3000 ppm.

Page 10 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN

'7 I 1 6

REGIONbOP(005.

AQCCEPTABLE OPERATION

'4

_z

REGIONiOF UNACCEPTABLE O........o".............

OPERATJiON i.........

(350,J.0) 0.......

I.........

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

I..........

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

Page 11 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7

6 5

<1 z

z 0

D

(.9 4

3 (500,6.5):

REGION OF ACCEPTABLE

.... OPERATION ~:......................

(350,4.0)

REGION OF UNACCEPTABLJE OPERATION S.............. -

0 I.

Imi Nwwwiviiiiw istamem; 0

100 200 300 400 COLD LEG TEMPERATURE (°F) 500 600 Page 12 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 0.5 -d*,,L,.

g,,

6

'*I.

.(0%,.5) w*es,,,

i ~ ~

~

a

o...

.,.'100%,6

.,.....d...

goes.

0.0 5(I0%.,-o..

-0.5,-.2

, - -0.5...........

I

<1 0

0 1.

H 3-.0......................................................................................................................................

3.5 I

ACCEPTABLEE U::

S.

-2.0...............

O....................O..

-4.0

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

t-4. -2.5 LLO

~(0%,-3.,4)

(10%,-4.0

-4.5.

L,,,, t.L,,,,L

,~L

. L..L.. I...L..L I L..L..L I L..L.L.. I -...

.z z I

. I........z.z.

0 10 20 30 40 50 60 70 80 90 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

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 14 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30.................................................

r T............1

.............1..............

25

... r-I I

I.

1....

rT II 1--

III z

0 (60 MIN. 20.0%)

20...........

20 WOJ UL<

15 L1~<

,10...........................................................

00 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 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0 0.9.................

(SEE-FOOTNOTE-IN-SECTION -3'1..7 FOR APPLICABILITY FOLLOWING A REACTOR CUTBACK) 0.8 S0.7 GRP 4POS-=(172.S5:*FRACPwR) ÷-25.5.

GRP 5 POS = (i72.5!x FRAC. PWR) - 64.5 0.6 k':

mZ C*

0.5 "-,.:

z 0.5

'"I.... :...... cv o -- -- -

zZ 0

[

0.4

..1-

[---,

I*m

Z "-

0-U 0.3 I

I I"I I

I I

I i

I

,<* 0 L4

-0, u.cz 0.3..-...............

0.3

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

1 1 ---

0.1........................................

0.0 GROUP 5 GROUP 3 GROUP 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 F**

9+0 60 31 Ito 30 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 14 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 0.0 0.9......

0.8 (SEE FOOTNOTE IN SECTION -3;1;7 ----------..

FOR APPLICABILITY FOLLOWING 0.7 -----

A: REACTOR CUTBACK)

< ~ ~~

.0.6 GRP 4POS=(250.9x'FRAC;'PWR) + 9.82-GRP 5 POS (250.9 FRAC. PWR) - 80.18 z

e¢ a

HI.

i 0

Z:Z r,* 0.3 -PG

. Z.....

................... !........ !............... !........ ':................ r.............. '......

F-C>

Z:~

U a~- U:i 0.2 0.1 0.0 0.0 I

j I

I I

I I I I

I I

I!

GROUP 5 GROUP 3 GROUP 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 I I_

FJ¢* I0 9+0 60 3J0 1 F

1*

tO JO dO 310

)

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 14 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER z

z o=1 z0 0

z GO 9

H.

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 1

. I I

D:

rRANSIENT INSERTION LIMIT (75.0o;INCtlES:

L.

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

O PER A TIO N........................

...............PE R.T.N UNACCEPTABLE RESTRICTED m

m. -----

....................................i.................*...............................................................

LONG TERM STEADY STATE INSERTION LIMITSE (112.5 INCHES)

............ i........................... !............. i........... *.......... *........................................ '...........

T OPERATION ACCEPTABLE

.......I

.... I I.

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

m

.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 14 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 EGION 15.0............................... :..................... R E G I[O N.-O F'................................

UNACCEPTABLE HOPERATION o 10.0

5 5.0 REGION OF ACCEPTABLE OPERATION 1

L.

I J..,

I..

JJ.J i

L

.. J 1..L.L L..

I.A...L I

,L.~,,

.L.

AA i.,

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 POWER)

Page 18 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE 25 z0 (95,20) 0 2..................

.9,0 Z0 10.0...........................................................

z 5

0 (75,0) 0............

I.............I 0

25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 19 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 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

0

>Z u

2.2 2.1

(-0.1,2.28)

S..............

(0 1,1.93)

,1 i,

,1

..,..,1....

ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST I CEAC OPERABLE IN EACH OPERABLE CPC CHANNEL (0.062.3 8 (0.1,2.38) l3 la lU

,ACCEPTABLE OPERATION I

i

,POWER AT OR ABOVE 90%

3 lU PWEACH APERABLE CPC CHA9NNE

(o~.....

o5..o....

.........!.........i......

.. 0 :1,2 :0 0 )..............

UNACCEPTABLE EACH-- OPERATION CPC CANN

. I...

I.

.I.

2.0 1.9 1 $R i i.

i i i

-0.20

-0.15

-0.10

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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 14 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

u CU 3.3 ACCEPTABLE OPERATION ANY POWER LEVEL S--BOTH CEACs.INOPERABLE......

IN ANY OPERABLE CPC CHANNEL

(..0,.....).......(0.1,3.4......

(-0.1,3.27)

UNACCEPTABLE OPERATION

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

3.2 3.1 3.0

-0.220

-0.15

-0.10

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

Revision 14 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 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 14 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 0.98Ž> 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 14 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 0.97Ž> Kef-> 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 1 hour ONA ONA Notes:SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24 of 26

Revision 14 PVNGS UNIT 2 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 > 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 14 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

Enclosure PVNGS Unit 3 Core Operating Limits Report (COLR)

Revision 16

Revision 16 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 3 Revision 16 R Digitally signed by Delorenzi, Responsible Engineer Delorenzi," lakZ19)

Delorn ZljMark J(Z01 931)

Date oN: CN = Delorenzi, Mark J (Zo1931)

Mark J Reason: I am the author of this document.

(Z019 1 Date: 2006.06.01 14:40:39.

(Z 3 1 )

07*00' Digitally signed by Webb, Independent Reviewer

Webb, James R(V97187)

Date DN: CN = Webb, James R (V97187)

James R Reason: I have reviewed this document.

Date: 2006.06.02 08:19:59 (V97187) 07'00' Responsible Section Leader Digitally signed by Can non, Cannon, Thomas C Date (Z20485)

Thomas C -DN: cN =

Cannon, T Thomas C(Z20485)

(Z20485)

Date: 2006.06.07 08:20:06 -07'00' Page 1 of 26

Revision 16 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table of Contents Description Page Cover Page 1

Table of Contents 2

List of Figures 3

List of Tables 4

Affected Technical Specifications 5

Analytical Methods 6

Analytical Methods (continued) 7 CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 8

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

3.1.4 Moderator Temperature Coefficient (MTC) 8 3.1.5 Control Element Assembly (CEA) Alignment 8

3.1.7 Regulating CEA Insertion Limits 8

3.1.8 Part Strength CEA Insertion Limits 9

3.2.1 Linear Heat Rate (LHR) 9 3.2.3 Azimuthal Power Tilt (Tq) 9 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 9 3.2.5 Axial Shape Index (ASI) 10 3.3.12 Boron Dilution Alarm System (BDAS) 10 3.9.1 Boron Concentration 10 Page 2 of 26

Revision 16 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 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 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 11 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 16 PVNGS 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 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 of 26

Revision 16 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 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 16 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

1) CE Method for Control Element Assembly Ejection Analysis (13-N001-1301-01204-I)

2) The ROCS and DIT Computer Codes for Nuclear Design (13-N00 I-1900-01412-0)

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

4) System 8 0 TM Inlet Flow Distribu-tion (13-N001-1301-01228-0)

5) Calculative Methods for the CE Large Break LOCA Evaluation Model for the Analysis of CE and W Designed NSSS (13-N00!1-1900-01192-3)

6) Calculative Methods for the CE Small Break LOCA Evaluation Model (13-N001-1 900-01185-3)

7) Fuel Rod Maximum Allowable Pressure (13-N00 1-0201-00026-1)

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-005)

Report No.

CENPD-0190-A CENPD-266-P-A CEN-356(V)-P-A Enclosure 1-P to LD-82-054 CENPD-132 CENPD-137-P Rev Date Supplement N.A.

January 1976 N.A.

N.A.

April 1983 May 1988 (April 1996) 01-P-A (ARI)

N.A.

February 1993 N.A.

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

April 1998 CEN-372-P-A N.A.

May 1990 N.A.

N.A.

NFM-005 N.A.

January 2006 Page 6 of 26

Revision 16 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Title

9) Technical Description Manual for the CENTS CodeVolume 1 (CENTS-TD MANUAL-VOL 1)

10) Technical Description Manual for the CENTS Code Volume 2 (CENTS-TD MANUAL-VOL 2)

11) Technical Description Manual for the CENTS CodeVolume 3 (CENTS-TD MANUAL-VOL 3)

12) Implementation of ZIRLOTM Cladding Material in CE Nuclear Power Fuel Assembly Designs (I 3-NOO1 -1900-01329-0)

Report No.

CE-NPD 282-P-A Vols. 1 CE-NPD 282-P-A Vols. 2 CE-NPD 282-P-A Vols. 3 Rev Date Supplement 2

March 2005 N.A.

2 March 2005 N.A.

CENPD-404-P-A 0

November 2001 N.A.

Page 7 of 26

Revision 16 PVNGS UNIT 3 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 - 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, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits1 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).

1 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 16 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 (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 - Maintain 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 -

Operate within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

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

Page 9 of 26

Revision 16 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 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 > 3000 ppm.

Page 10 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.1.1 -1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 6

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

RE I

N O

( 5 0 0,5.0 *.

REGION OF(505)

ACCEPTABLE OPERATION 4

a c/

REGIONMOF 2

UNACCEPTABLE OPERATION (350,1.0)

I..

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

I

,,,.....................l,.........i n

l l....

I 0

100 200 300 400 500 600 COLD LEG TEMPERATURE (°F)

Page 11 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7

1...........T............I.

.I........

9 (500,6.5)::

REGION OF ACCEPTABLE.......

o E, ~

i........................

5 OPE R A T IO N

-Z (350,4.0)

>1 REGION OF 2UNACCEPTABLE OPERATION I..

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

0 100 200 300 400 500 600 COLD LEG TEMPERATURE (*F)

Page 12 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 0.5 L..

0.0 ~

~~~ ~~

I-------

,-(50%,(0.0) 0.0............

i.~~

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

i............. *............. :.......

b,,...

-0.5.

0.0....

CL

1. 0

.5.................................................... :.........................

........................................... i........

CR A

F -----.....

-2.0 -.-

-1.5

.T......C....................................

C.-A R E A-.F LL*

ACCEPTABLEE 0

.E R A TIO N N........................................

S-2.5 0

10 20 30 40 50 60 70 80 90 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

End or Cycle Limit-Beginning of Cycle Limit

TECH SPEC 3.1.4 Maximum Upper Limit Page 13 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30.............1..........................r.......

25 z

0 (60 MIN, 20.0%)

LLI 0

u 1 5 5

010 0

~(10MIN,0.0%)

0

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

I 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 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0 0.9 0.8 2

0 z0 pU 0.7 0.6 0.5 0.4 0.3 I

I i

i I

l I

I I

i I

I

............................ -- -(SEE FOOTNOTE.IN SEC.- TI N.3;l,..7 a i

!FOR APPLICABILITY FOLLOWING:

.....*... ;........!....*,,.*..o..*:.~,.. i......

!....... i....... !......-

GRP 4 POS Q

(723 ýx FRA C; PWVR) + 255 -----

GRP 5 P..

(172 :x FRAC. PWR) - 64.5 o:

z

l. -

t...... :................

oz

, 0 O :

0

.i I

I I

1 I

I I

0.2 0.1 o0 v.

GROUP5 GROUP 3 GROUP I I I I I !

I I I I

I I I I 1 !

I I

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

GROUP 4 GROUP 2 R r* 110 6+0 3+0

ý F t o

I

£ CEA POSITION (INCHES WITHDRAWN)

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

Page 15 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 1.0 0.9 0.8 0

Lu Lt~0 z

0 U

0.7 0.6 0.5 0.4 0.3

..."..... J..... -.....i...... -......................... "....... i......... "........ !........ ".................. I..............

(SEE FOOTNOTE INSE SCTION.3.17...........

FOR APPLICABILITY FOLLOWING A::AREACTOR CUTBACK)'

... )-*"

?....... E.... i......

..... GRP4. Pos-=(2ý0.9-X."FRA(3.PWVR) +9.82---

7 GRP 5 POS= (250.9 k FRAC. PWR) - 80.18 0Z U

<I-U:

Z:

,,.,..........\\..

b.

~

7.

- _ 4. -

I........

L~

\\

-. u Z

....*, I mmI me It

.im t

mI*Imm m*.

..........'-.....L 0.2 0.1 0.0 GROUP5 I

I GROUP3 I

I I

I GROUP 1 I

I I

l m

I m

i-I i

m -

~

I I

FW* 120 90 60 30 0 FW* 120 90 60 GROUP 4 I

I I

30 0 FW* 120 90 60 30 0

GROUP 2 I

I m

I FNý* 110 96'0 3b 6 FNV* 110 do d0o 9o 6

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 16 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER uJ z

0 c/i 0

z w

C4i 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 1

.............. 4.............

l...

.......... l............

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

.N......................................

..... o,

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

v.............

............. +.............

L TDRANSAIONTLM INSERTION LIMIT (75.0T1INCtIESS

!............. i............

............ IOPER-ATION..........

PERA TION............-

UNA PA N ACCEPTABLESTRICTED

........... i..................................

LONG TERM STEADY STATE INSE:RTION:LIMITS' (l 12.5 IN/CHESJ

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

........... -........÷............

I

!OPERA ION ACCEPTABLE

.......................... !.............. i............. <...

.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 FRACTION OF RATED THERMAL POWER Page 17 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 I

1 r

'*..i~~

1 I

B.

................... REGION.-OF.

UNACCEPTABLE OPERATION 0H2 10.0 5.0 REGION OF ACCEPTABLE OPERATION I..

L....J L

l t

t. I I

I LL..

L.. I L.1..

. I

..~

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 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE 25 z0 Z

0

.C) 0 u

20 15 10 5

(20,95.0)

.(...............................0..................................0......................... 0........

..! : :...9.........

0 0

25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 19 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revisi FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) on 16 2.4 2.3

z

>E u

2.2 2.1 ll l~l 1

~ ~ llll JlA CCEI1 TABLEIIIIl dP RA lllmlTI 6 N.IiJm Jl~lal llll ANY POWER LIEVEL MINIMUM OF 1 ICEAC OPERABLE

.(0.02.2.38)

(0.1,2.38) 0

(-Q.1,2.29):

II I

ACCEPTABLE OPERATION I

POWER AT OR ABOVE 90%

................ i................ !................................. m................................

MINIMUM OF 1 CEAC OPERABLFl I

(0.05:2.03)

I 2

)...........

foow S (-0.1,1.96.)

UNACCEPTABLE L

LL............

t..........

L....

I.........-

I.

I.........

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

2.0 1.9 1 01 1.0-0.20

-0.15

-0.10

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

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 16 FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 3.6 3.5 3.4 I

z u.

3.3 ii Js..l.

.ll.

J l

.i

.l.

l IIIII I I I I II

......... 1 ACCEPTABLE OPERATION ANY: POWER LEVEL CEAC's INOPERABLE (0.1,3.32)

................i................-

1,3.19)

UNACCEPTABLE OPERATION

,ItttI I,

.I.

. I.

3.2

(-0.

3.1.....

0oo.............

I

-0.20 I

mllJ

-0.15

-0.10

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

Revision 16 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 16 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 0.98Ž> 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 16 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 >_ 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 1 hour ONA ONA Notes:

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

Revision 16 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 Ž 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 16 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

ML061710459

Text

Dear Sirs:

Subject:

Enclosure:

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