Text

Core Operating Limits Reports (Colr), Unit 1 - Revision 18, Unit 2 - Revision 15, and Unit 3 - Revision 17
	ML073390282
Person / Time
Site:	Palo Verde
Issue date:	11/27/2007
From:	Weber T; Arizona Public Service Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	102-05767-TNW/SAB/CJJ
	Download: ML073390282 (82)
	v • d • e

Technical Specification 5.6.5.d Palo Verde Nuclear Generating Station Thomas N Weber Department Leader, Regulatory Affairs Tel. 623-393-5764 Fax 623-393-5442 Mail Station 7636 PO Box 52034 Phoenix, Arizona 85072-2034 102-05767-TNW/SAB/CJJ November 27, 2007 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 18, Unit 2 - Revision 15, and Unit 3 - Revision 17 Pursuant to PVNGS Technical Specifications, Section 5.6.5.d, enclosed is Unit 1 -

Revision 18, Unit 2 - Revision 15, and Unit 3 - Revision 17 COLRs, which were made effective on November 21, 2007. These revisions were made for all three units to clarify the operating region in figure 3.1.4-1, MTC Acceptable Operation, Modes 1 and 2.

Other minor changes were made to several figures to make the units' COLRs consistent.

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 Glenn A.

Michael at (623) 393-5750 if you have any questions or require additional information.

Sincerely, JIY SAB/TNW/CJJ/gat

Enclosure:

PVNGS Unit 1 Core Operating Limits Report (COLR), Revision 18 PVNGS Unit 2 Core Operating Limits Report (COLR), Revision 15 PVNGS Unit 3 Core Operating Limits Report (COLR), Revision 17 cc:

E. E. Collins Jr.

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

Comanche Peak 0 Diablo Canyon

Palo Verde 0 South Texas Project

Wolf Creek A 0o4I

Enclosure PVNGS Unit I Core Operating Limits Report (COLR)

Revision 18

PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 Responsible Engineer

Napier, Digitally signed by Napier, Joseph Date (Z*t 881)

DN....

Napier, Joseph J(Z71881)

Uo iJ os I j i hReason: I am the author of this dooaument-.,,,

(Z71 D,-

.ata:

26071,1.2 0210:4:02 -07o00 Independent Reviewer it' Digitally signed by Foster, I-oster r Glenn A(Z35831)

Date

)l, DN: cn=Foster, Glenn A G lenn A I Reason: I have reviewed 1

/,)

-this'dRocument (Z3583 17 Date: 2007.11.02 11:17:32

-07'00' Responsible Section Leader W ebb, DigitallysignedbyWebb, JamesR Date I (V97187)

,," DN: cn=Webb, James R(V97187)

J m s

//I*O I.

izReason: I am approving this

(\\f971,,,dy Da*u e nt20-,

1

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",* " D ate : 2 007ý -l*.02 12:42:27 -07'00' Page 1 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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

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 18 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 1 CORE OPERATING LIMITS REPORT Revision 18 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 18 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 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 18 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 -NOO 1-1301-01204-1)

2) The ROCS and DIT Computer Codes for Nuclear Design (13-N00l-1900-01412-0)

3) Modified Statistical Combination of Uncertainties (13-N00l-1303-01747-2)

4) System 8 0 TM Inlet Flow Distribu-tion (13-NOO1-1301-01228-0)

5) Calculative Methods for the CE Large Break LOCA Evaluation Model for the Analysis of CE and W Designed NSSS (13-NOO1-1900-01192-3)

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

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

8) Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/S1MULATE-3 (NFM-005)

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

January 1976 N.A.

N.A.

N.Aý.

April 1983 CEN-356(V)-P-A Enclosure 1-P to LD-82-054 CENPD-132 CENPD-137-P CEN-372-P-A 01-P-A (ARI)

May 1988 (April 1996)

N.A.

February 1993 N.A.

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

N.A.

April 1998 May 1990 January 2006 NFM-005 N.A.

Page 6 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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 (13-N001-1900-01329-0)

Report No.

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

March 2005 N.A.

2 March 2005 N.A.

2 March 2005 0

November 2001 N.A.

N.A.

Page 7 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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 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 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:

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 18 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 18 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 _Ž 3000 ppm.

Page 10 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

i.

REGION OF (500,5.0)

ACCEPTABLE 2

OPERATION z

0 3 REGION:OF UNACCEPTABLE OPERATION 0

I ll

'll n

I.........

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

Page 11 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED

/

6 5

5 z

03 2-CfI REGION OF ACCEPTABLE

...............-O P -ER A T IO N..] -.....................

(500,6.5)::

(350,4.0)

REGION OF UNACCEPTABLE OPERATION I

I.........

0 0

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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT FIGURE 3.1.4-1 Revision 18 z

L--

0 0

0 W

C..

2 0.5 0.0

-0.5

-I.0

-1.5

-2.0

-2.5

-3.0

-3.5

-4.0

-4.5 MTC ACCEPTABLE OPERATION, MODES 1 AND 2

.7(0%,,0.:

.. 5-J--

0.00%,.

I......

_a (50%.

0.0).

M T C.. A.R E A F..........

ACCEPTABLE OPERATION

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

------..............;............. J.....................................................

-(o%,-3.4)

.. I.....

I.

I

....i 0

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

(% OF RATED THERMAL POWER)

Maintain Operation within Boundary TECH SPEC 3.1.4 Maximum Upper Limit........

Page 13 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30 25 z0 p -

u 04 uJ C)

Z W

0 CL Lu 20 15 10 (60 MIN, 20.0%;

(10 MIN, 0..0%)

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 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0 0.9

(SEEFOOTNOTE INSEC-TION-3L7 FOR APPLICABILITY FOLLOWING:

A REACTOR CUTBACK) 0.8 ----

)- ----------- ----

.07 GRP 4POS 725-ýxFRAC.PWR )+255 GRP POS (172.5xFRAC. WR)- 64.5 0

i.

0.5 O

0.5 5y.----

-.- Z.--

Z CI j

/

U oo~U 0.2 0.1 GROUP5 GROUP3 GROUP I Ft 1.

I0 I

I F) I

'tI 0

I 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 18 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 1.0 0.9 0.8 0.7 0.6 0.5 0

Z 0.4 U

0.3 0.2 0.1 o0

... i...

..i....

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

i.......

i........

(SEE -FOO TNOTE-IN*SECTIO N -3;, 7-----------

FOR APPIJICABILITY FOLLOWING A: REACTOR CUTBACK).......

0 G RP 4 Po S'= ('2,0.9 -icFR A-C.;PW fR Y'÷ 9:82---

GRP 5' POS (250.9 1 FRAC. PWRE-80;18

...t i

l z ý --------

z '0z U.

....t....

z I 0 0

~o v.

GROUP5 GROUP3 GROUP 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 Ft*

1 E0 P+0 60 3(I N FtIt W D

6R 0

3 CEA POSITION (INCHES WITHDRAWN)

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 18 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0.0 10.0 20.0 30.0 40.0 z

50.0 60.0 z

70.0 0

2 80.0 90.0 C-,)

z 100.0 110.0 120.0 130.0 140.0 150.0 I --------------......

I ---------..........I---------

£

-,OPERATION......................

UNACCEPTABLE; IRANSLENT INSERTION LIMIHT (75.0::INCHES),

I -

-I

............. OPERATION.............

RESTRICTED

.............. i............. i............. ;..

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmml, i

i LONG TERM STEADY STATE INSERTION:LIMITSI (112.5 INCHES)

O P E R AT--

I O N

............. A C C-P T A B E I

OPERATION ACCEPTABLE I

4 - - - - - --4...

I

.... I....

I.

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 18 AZIMUTHAL FIGURE 3.2.3-1 POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 i i m 1 5 K K m K m I a i 9 i 1 9 m i m r E ! i m ! i ! m ! i i 15.0 0F-10.0 REGION OF A I

I R E G I O N O F -.-... --.-..

UNACCEPTABLE OPERATION 5.0 LCCEPTABLE I

I OPERATION I

I.

0.0 L 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 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 18 25 20 0

0 C) 15 10 25 (95,20) 0 )

S (75,0) 5 0

0 50 CORE POWER LEVEL

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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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 IIIIll*llllll*llll z

u 2.2 2.1

(-0.1,2.28)

(.. 1193)..

(461,1.93)

ACCEPTABLE O1PERATION ANY POWER LEVEL AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE CPC CHANNEL 3.................

I I

a aI I

I a

U ii................. i.......................................................

ACCEPTABLE OPERATION POWER AT OR ABOVE 90%/

AT LEAST 1 CEAC OPERABLE IN

-EACH-OPERABLE CPC CHANNEL-:

,(0.05,2.00)

----- II-------- ------

[....................................----------..

=

I I

OO I°°° UACETAL I

I.

.I,

(0.1,,2.38)::

$IlIIll 1-,2.-oo0)-

2.0 1.9 1.8

~o.

IlllllllBIBllmllBll

-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 1 CORE OPERATING LIMITS REPORT Revision 18 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 lllllllllllllIDllll ACCEPTABLE :OPERATION ANY POWER LEVEL BOTH CEACs INOPERABLE IN ANY OPERABLE CP.C CHANNEL

.3.27) z

E uaw u

3.3

(-0.1 3.2 3.1 3.0 UNACCEPTABLE OPERATION I...

. I.........

I...

IlllmllllllmliJllllllDlmlliJ

-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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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 18 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 18 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 2 Core Operating Limits Report (COLR)

Revision 15

PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 Res l E e Digitally signed by Napier, Responsible Engineer i~~e.

Jsp (781 N pe r,

ýjJoseph J(Z71 881)

Date o sip DN: cn=Napier, Joseph J I,,*e,*i*

I ;,(Z7t881)

JoU se hj

// "'Reason: I am the author of (Z7188 1, Date: 2607.11.07 07:26:02 Independent Reviewer

(-

88 Digitally signed by Foster, Poster li Glenn A(z3583,1 Date F

, DN: cn=Foster, Glenn A

_larn A

L(z35831)

Glenn A y' Reason: I have reviewed (Z.58.1R,4 Date: 2007.11.0708:27:11 (Z358 fl,-) 00' SectionLeader Digitally signed by Webb, Responsible Section Leader V ebb I James R(V97187)

Date DN: cn-Webb James Jam es R 0.\\(V9718 7 )

Reason: I am approving

.-,this-docqirment (V,971§ 8 '

Date: 2007.11.07 08:54:29

-07'00' Page 1 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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

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 2 CORE OPERATING LIMITS REPORT Revision 15 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 l 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 2 CORE OPERATING LIMITS REPORT Revision 15 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 forKeff> 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 2 CORE OPERATING LIMITS REPORT Revision 15 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 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 2 CORE OPERATING LIMITS REPORT Revision 15 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-N001-1301-01204-1)

2) The ROCS and DIT Computer Codes for Nuclear Design (13-NOO1-1900-01412-0)

3) Modified Statistical Combination of Uncertainties (13-NOO1-I1303-01747-2)

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-NOO1-1900-01192-3)

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

7) Fuel Rod Maximum Allowable Pressure (13-N001-0201-00026-1)

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 (ARI)

N.A.

February 1993 N.A.

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

N.A.

April 1998 May 1990 January 2006 NFM-005 N.A.

Page 6 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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 (13-NO01-1900-01329-0)

Report No.

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

March 2005 N.A.

2 March 2005 N.A.

2 March 2005 0

November 2001 N.A.

N.A.

Page 7 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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 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.

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

Page 8 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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 2 CORE OPERATING LIMITS REPORT Revision 15 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 _Ž 3000 ppm.

Page 10 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

6 5

z z0 0

[.-.

4 3

REiGION OF AC CEPTABLE:

OPERATION 0..0.......

5.

.0).

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

5.0...........

REGION: OF UNACCEPTABLE 2

1 0

I lllllllll 0

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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED

/

6 5

REGION OF AC CEPTABLE

.OPERATION---

z z

0-r) 4 3

(500,6.5)j (350,4.0)

ON OF XCEPTABLE T -I-N RATIO N 2

0 I......

REGI UNA(

OPEl

.I-------.

IIIIIllll

.l

. l l.

l.

. l.

l. l.

. l. l l.

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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 0.5 0.0

-0.5

-1.0

-- -. 'J"

' I

.... I...

I....

I I.

0.5 100ý

"°........

............ I --------------------------------------------

z z

IT U

0 F.-

0

F

-1.5...........

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

-2.5...........

-3.0 (0%,-3.4)

--MTC-AREA-OF ACCEPTABLE OPERATION

-3.5

-4.0

-4.5 llllllllllllllllllllllllll 0

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

(% OF RATED THERMAL POWER)

Maintain Operation within Boundary TECH SPEC 3.1.4 Maximum Upper Limit........

Page 13 of 26

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

Revision 15 30 25 0

uI 20 15 I -..................------

(60 MIN, 20.0%)

I t

m..

10 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 of 26

PVNGS UNIT 2 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 0.7 0.6 H

0.5 Z0.4 0

0.3 0.2 0.1 00 (SEE FO4YfNO-TE IN-SE.CTION -ý

ý 3

.1.

FOR APPLICABILITY FOLLOWING A REACTOR CUTBACK)

GRP4"POS-= (172"5x FRAC;PWR -+25S-"

GRP 5POS (172.5x FRAC. PWR)-64.5

~i K!

r

<JI I

LI -----------

...... "-..m.. i.

z V)0 oq 0-:

0V)

GROUP5 GROUP3 GROUP 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 Ft 10 010 t

+0 t F

T*

It 10 O6+0 t

CEA POSITION (INCHES WITHDRAWN)

Fully Withdrawn (FW) is defined as > 147175" (Pulse Counter) and > 145.25" (RSPT).

Page 15 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 1.0 0.9 0.8 0.7 0

0.6 0.5 0

Z 0.4

(-)

t 0.3 0.2 i -r1--1r---Tr--TrTr

.I --------

7 (S

..... (SEE-FOOTNOTE IN-SEC-TION 3;1;7--..

FOR APPLICABILITY FOLLOWING E-A REA*CTOR CU'TBA*CK)

.... ~

~

..................--- GRP 4 POS-=(-250.9-I -FRA-e.-PW`R +-9.82---

P GRP POS= (250.9i cFRAC. PWR)+- 80:18

... a.-

r*

I

..... ** ' I t "....

f

..?.....:...

V : -

ZD I-I I-II-I--

0~i I-0.1

()A V,

GROUP5 GROUP3 GROUP 1 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 Ft*1 0 910 PS6TO 3+0 Ft*

10 JW 6H 0

R 3W CEA POSITION (INCHES WITHDRAWN)

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

Page 16 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0.0 10.0 20.0 30.0 Z

40.0 50.0 60.0 Z

70.0 0

o 80.0 u

90.0 z

100.0 110.0 120.0 130.0 140.0 150.0 O...

PERA UNACC I I I I I -------------

- - ----- ----4............

TRANSIENT INSERTION LIMIT (75.01NCHESý TION -------------

EPTABLE

&i2l

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

OPERATION ------------

RESTRICTED S -

a -

H -

S ****

11,*.II~....

LONG TERM STEADY STATE INSERTION:LIMITS& (112.5 INCHES)

O R...

IO......

N AB

............. L............. -

I -

i..

'OPERATION ACCEPTABLE

-- 4 ---

-- -- -- 4 ---

I -- -- -- -- -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 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 Il 0

10.0 U -

S -

....REGIONOF.......

OF UNACCEPTABLE OPERATION I 4 S l I l l B

5.0 F*

REGION OF ACCEPTABLE OPERATION

I I

I I

0.0 L 20.'

illl 0

30.0 40.0 50.0 60.0 70.0 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 80.0 90.0 100.0 Page 18 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL 25 r

(95,20) 2 0 0

u 0

1 5 z

0 51 iL]

~05 uL

~~10 (75,0) 0 0

25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 19 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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

.....I..

1.

u a.)

2.2 2.1

(-0.1,2.28) 11----.---.-----)...

(---

. I.

.. I.

ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE CPC ChANNEL (0,'06,2.38)(0128 i

(0.1,2.38)::

I I

ACCEPTABLE OPERATION POWER AT OR ABOVE 90%

AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE-CPC CHANNEL-..

I a

(0.05,2.00) 0 0 -----

UNACCEPTABLE

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

. I.

.. I.

. I i.

2.0 1.9 IQ Q 1.

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 15 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

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

......... r ACCEPTABLE OPERATION ANY POWER LEVEL BOTH CEACs INOPERABLE 3.5 I A NY-O PER A B LE...

......... I-CHANNEL 34 0.1,3.41) z S 3.3 I

u

(-0.1,3.27) u 3.2 UNACCEPTABLE OPERATION 3.0

,I I

-0.20

-0.15

-0.10

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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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 2 CORE OPERATING LIMITS REPORT Revision 15 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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 15 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 17

PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 RsnieE iP Digitally signed by Napier, Responsible Engineer

iNapier,

ý1, Joseph J(Z71881)

Date DN: cn=Napier, Joseph J

.~ ~

(z71881)

Joseph J1

/Reason:I am the author of

"-, \\,-tlhis docu mennt (Z71 88Ai, Date: 2007.11.07 07:22:12

-07'00 Independent Reviewer Digitally signed by Foster, Date Foste r, 4 Glenn A(Z35831)

DeN: cn=Foster, Glenn A Glenn A

//Reasonýl have reviewed this (Z3583 1)"- Date 2007.11.07 08:22:08

-07'00' Rsnbeeie --

Digitally signed by Webb, Responsible Section Leader

VWebb,

\\i James R(V97187)

Date DN: cn=Webb, James R

-\\(V97187)

,James

/R Reason: I am approving S,.this's d iment (V97 1 8,T Date: 2007.11.07 08:57:09

-12,

-0700' Page 1 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 Table of Contents Description Cover Page 1

Table of Contents 2

List of Figures 3

List of Tables 4

Affected Technical Specifications 5

Analytical Methods 6

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 3 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 3 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 3 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 1 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 3 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-NOO-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 8 0TM 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-NOO1-1900-01192-3)

6) Calculative Methods for the CE Small Break LOCA Evaluation Model (13-NOO1 -1900-01185-3)

7) Fuel Rod Maximum Allowable Pressure (1 3-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 CEN-372-P-A Rev Date Supplement N.A.

January 1976 N.A.

N.A.

April 1983 01-P-A (ARI)

May 1988 (April 1996)

N.A.

February 1993 N.A.

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

N.A.

April 1998 May 1990 NFM-005 N.A.

January 2006 N.A.

Page 6 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 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 (13-NOO1-I1900-01329-0)

Report No.

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

March 2005 N.A.

2 March 2005 N.A.

2 March 2005 0

November 2001 N.A.

N.A.

Page 7 of 26

PVNGS UNIT 3 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 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.

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

Page 8 of 26

PVNGS UNIT 3 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 3 CORE OPERATING LIMITS REPORT Revision 17 3.2.5 - Axial Shape Index (ASHI 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 3 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

6 5

REGION OF ACCEPTABLE OPERATION z

z 0

4 3

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

0..5..._.

REGION OF UNACCEPTABLE OPERATION (350, ).....................

(350J.0) 2 I

I I

l I.

A I

..A1

.... A.

.L...

J....LJ. I.&.L..L..L..L.

1.....

.. L.L..I.

.. L..

.. L.L.

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

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7

6 5

4 z

0 0

3 F-2 0

REGION OF ACCEPTABLE OPERATION (500,i (350,4.0)

REGION OF UNACCEPTABLE OPERATION I

6.5)::

1 1 1

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

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

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 z

0 0.5 0.0

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

.(%,0.3.

4..

I.. I I

I

.(0 i

u*"

( 100%.-0.2 M T C --A -R E A -O F --------.............

ACCEPTABLEE

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

I

. i I

....I......

-4.0

-4.5 0

10 20 30 40 50 60 70 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 80 90 100 Maintain Operation within Boundary TECH SPEC 3.1.4 Maximum Upper Limit........

Page 13 of 26

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

Revision 17 30 25 z

u0ý Lij~

20 15 10 (60 M,, 20.0%ý (10 MIN, 0).4 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 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.7-1 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS IN SERVICE) 1.0 0.9 0.8 0.7 0.6 0.5 z04 0

0.3 0.2 (SEEF FOO NOTE IN SE-CTION-3.L7-1....

FOR APPLICABILITY FOLLOWING:i A REACTOR CUTBACK)

_R..4.POS..=(-o(_2-.5 FRA*C-PWR)+-+25-,5*........

SGRP POS =(172.5:x FRAC. PWR 64.5 z

0.--...-.----------------

z.

w" i

L

c aj !i

I, i

0.1 I-o0 GROUP 5 GROUP 3 GROUP 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 CEA POSITION (INCHES WITHDRAWN)

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

Page 15 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.7-2 CEA INSERTION LIMITS VERSUS THERMAL POWER (COLSS OUT OF SERVICE) 1.0 0.9 0.8 0.7 2

0.6 0.5 0

z 0.4 0

P 0.3 0.2 0.1 0.0

-V1 m

0 I

I I

I

..... (SEE FOOTNOTE IN-SECTION-3.1,7----......

FOR APPLICABILITY FOLLOWING A: REACTOR CUTBACK)

GRP 4 POS-=f(25*0.9 --FRAC.-PWR)+ -9.82---

G RP.POS = (250.9 i FRAC. PWR) - 80.18 GROUP5 GROUP3 GROUP 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 Ft*

1 10 9[0 6+0 t1 Ft It 100 6+0 t1 CEA POSITION (INCHES WITHDRAWN)

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

Page 16 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 FIGURE 3.1.8-1 PART STRENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0.0 10.0 20.0 30.0 z

40.0 50.0 60.0 u

Z 70.0 0

o 80.0 90.0 I-z w

100.0 F-110.0 120.0 130.0 140.0 150.0

-OPERA TIO N..................

UNACCEPTABLE*

............--............. i.... *...........

.................. I............ *

! TRANSIENT INSERTION LIM IT (75.01INCHESý OPERATION.............-----------

iRESTRICTED

.r........----

f I

mmmmmmmmmmmm mm m

mlln m,

mm mmmmlmm nmnm

-~~.....:-..........

LONG TERM STEADY STATE INSERTION LIMITS (112.5 INCHES)

I......

OPERATION ACCEPTABLE 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 3 CORE OPERATING LIMITS REPORT FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL PO (COLSS IN SERVICE)

Revision 17 WER 20.0 15.0 LI~1 0

-J z

F-N 10.0 REGION OF-----------...-

UNACCEPTABLE OPERATION 5.0 0.0 20.0 I

I REGION OF ACCEPTABLE OPERATION

[

I.

1 l 30.0 40.0 50.0 60.0 70.0 CORE POWER LEVEL

(% OF RATED THERMAL POWER) 80.0 90.0 100.0 Page 18 of 26

PVNGS UNIT 3 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 0

02 0

15 10 5

0 0

25 50 CORE POWER LEVEL

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

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 17 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

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

i.

u 2.2 2.1

(-0.1,2.28)

(-.1,.3

. I.

.. I..

I ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE CPC C1ANNEL (006,2.38)

(

8 ACCEPTABLE OPERATION POWER AT OR ABOVE 90%c AT LEAST 1 CEAC OPERABLE IN

-EACH OPERABLE-CPC CHANNEL (0.05,2.00)

UNACCEPTAB-LE

.................... OPERA TION.................

a (0.1,2.38):;

2.0 1.9 1.820

-0.20

--2 --

0 ---

I..........

illli alililililillililllll i....... l l

l. l l..

..m

-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 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 II~llllu....................l.........l........l.........lFrrI-rrrT r rrrrrrrr 3.4 z

u 3.3

1 ---------

CHANNEL

.3.27)

ACCEPTABLE OPERATION ANY POWER LEVEL BOTH CEACs INOPERABLE

-N--N-OPE--

LE---

(-0.

0.1.3.41)::

3.2 UNAC OPER CEPTABLE ATION I-------... I 3.1 12 n 1.

I.

1.

IIIlllla

.I.......

-0.20

-0.15

-0.10

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

PVNGS UNIT 3 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 3 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 > 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 3 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 3 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 0.96 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

PVNGS UNIT 3 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 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

ML073390282

Text

Dear Sirs:

Subject:

Enclosure:

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