Text

Core Operating Limits Reports: Unit 1 - Revision 6; Unit 2 - Revision 5; and Unit 3 - Revision 8
	ML020860034
Person / Time
Site:	Palo Verde
Issue date:	03/19/2002
From:	Bauer S; Arizona Public Service Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	102-04673-SAB/TNW/GAM
	Download: ML020860034 (80)
	v • d • e

Scott A. Bauer Technical Specification 5.6.5.d Department Leader Regulatory Affairs Tel: 623/393-5978 Mail Station 7636 Palo Verde Nuclear Fax: 623/393-5442 P.O. Box 52034 Generating Station e-mail: sbauer@apsc.com Phoenix, AZ 85072-2034 102-04673-SAB/TNW/GAM March 19, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555-0001

Dear Sirs:

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-5281529/530 Core Operating Limits Reports: Unit 1 - Revision 6; Unit 2 - Revision 5; and Unit 3 - Revision 8 Pursuant to PVNGS Technical Specification 5.6.5.d, enclosed are the following revised Core Operating Limits Reports (COLRs) for PVNGS:

Unit 1 - Revision 6; Unit 2 - Revision 5; and Unit 3 - Revision 8.

These COLR revisions were implemented on March 15, 2002. The changes implemented by these COLR revisions consist of adding clarifying information to section 3.1.7 to define conditions under which the CEA overlap may be modified from the nominal values specified in Figures 3.1.7-1 and 3.1.7-2.

No commitments are being made to the NRC by this letter.

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

Sincerely, SABITNW/GAM/kg ý4 (:ac"C Enclosure cc: E. W. Merschoff all w/o enclosure J. N. Donohew J. M. Moorman A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

Comanche Peak

Diablo Canyon

Palo Verde e South Texas Project

Wolf Creek

Enclosure Core Operating Limits Reports for Palo Verde Nuclear Generating Station Unit 1 - Revision 6; Unit 2 - Revision 5; and Unit 3 - Revision 8

Revision 6 PVNGS UNIT I CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 1 Revision 6 Page 1 of 26

Revision 6 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table of Contents Description Revision #

Cover Page 6

Table of Contents 6 2 List of Figures 5

List of Tables 5 4 Affected Technical Specifications 5 5 Analytical Methods 6

CORE Operating Limits 5 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers 6 8 Closed 3.1.4 Moderator Temperature Coefficient (MTC) 6 8 3.1.5 Control Element Assembly (CEA) Alignment 6 8 8

3.1.7 Regulating CEA Insertion Limits 6 8

3.1.8 Part Length CEA Insertion Limits 6 9

3.2.1 Linear Heat Rate (LHR) 6 9

3.2.3 Azimuthal Power Tilt (Tq) 6 9

3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 6 9

3.2.5 Axial Shape Index (ASI) 6 10 3.3.12 Boron Dilution Alarm System (BDAS) 6 10 3.9.1 Boron Concentration 6 6 10 Page 2 of 26

Revision 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT List of Figures Description Revision # Page Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature 5 11 Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 5 12 Reactor Trip Breakers Closed 5 13 Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 Figure 3.1.5-1 Core Power Limit After CEA Deviation 5 14 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 5 15 (COLSS in Service) 5 16 Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)

Figure 3.1.8-1 Part Length CEA Insertion Limits Versus Thermal Power 5 17 5 18 Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power (COLSS in Service) 5 19 Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both CEACs Inoperable 5 20 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 5 21 Protection Calculators (COLSS Out of Service, CEACs Inoperable)

Page 3 of 26

Revision 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT List of Tables Description Revision # Page Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 5 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 5 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 5 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 5 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 5 26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95 Page 4 of 26

Revision 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Unit 1 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 Length 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 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT ANALYTICAL METHODS The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the NRC, specifically those described in the following documents:

Title Report No. Rev Date Supplement

1) CE Method for Control Element CENPD N.A. January 1976 N.A.

Assembly Ejection Analysis 0190-A

2) The ROCS and DIT Computer CENPD N.A. April 1983 N.A.

Codes for Nuclear Design 266-P-A

3) Modified Statistical Combina CEN 01-P-A May 1988 N.A.

tion of Uncertainties 356(V)-P-A

4) System 80 TM Inlet Flow Distribu Enclosure N.A. February 1993 1-P tion 1-P to LD 82-054

5) Calculative Methods for the CE CENPD N.A. June 1985 3-P-A Large Break LOCA Evaluation 132 Model for the Analysis of CE and W Designed NSSS

6) Calculative Methods for the CE CENPD N.A. January 1977 1-P Small Break LOCA Evaluation 137-P Model

7) Fuel Rod Maximum Allowable CEN-372 N.A. May 1990 N.A.

Pressure P-A

8) Arizona Public Service Com NFM002 0 September N.A.

pany PWR Reactor Physics Meth 1999 odology Using CASMO-4/

SIMULATE-3 Page 6 of 26

Revision 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Title Report No. Rev Date Supplement

9) Technical Manual for the CENTS CE-NPD N.A. June 1993 1-P Code 282-P-A Vols. 1-3 Page 7 of 26

Revision 6 PNGS UNIT I 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-length or part-length CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES I and 2 core power reduction is specified in Figure 3.1.5-1.

3.1.7 - Regulating CEA Insertion Limits One or more CEACs OPERABLE: With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits 1 shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits' shown in Figure 3.1.7-22.

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 6 PVNGS UNIT I 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) 3.1.8 - Part Length CEA Insertion Limits One or more CEACs OPERABLE: The part length 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 (.T1()

The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to the limit in Figure 3.2.3-1 with COLSS IN SERVICE.

3.2.4 - Departure From Nucleate Boiling Ratio (DNBR)

COLSS IN SERVICE and Both CEACs INOPERABLE - Maintaining COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.

COLSS OUT OF SERVICE and Either One or Both CEACs are OPERABLE Operating within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

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

Page 9 of 26

Revision 6 PVNGS UNIT I CORE OPERATING LIMITS REPORT 32.5 -. Axial Shape Index (ASI)

The core average AXIAL SHAPE INDEX (AST) shall be maintained ývithin the following limits:

COLSS OPERABLE

-0.18 < ASI

0.16 for power > 50%

-0.28 < ASI < 0.16 for power < 50%

COLSS OUT OF SERVICE (CPC)

-0. 10!< ASI< 0. 10 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 I CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7 I.

6 5 -.............. ........ ý500,5 .0). ......

REGION OF ACCEPTABLE OPERATION

-- 4 z

z (d

REGION OF

. UNACCEPTABLE

............. ................. ............ .......... SOPERATI

............ ...... ONN ....

(350, t..o)

S.. .. . . . . . . . .. . S. . ... . -

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

Page 11 of 26

9Z 0 zio Z 0 009 009 00t7 00C ONz 001 0

.................I 0 NOILLVuItdO:

ariavldH333VNaf

dAO NO0f9RI cC C

(0iVlgE)

......... --NOL1V I3dO ----- .....

AO WPM~a 9

_Aj . . . . . 1 . . . . . . . 1 . . . . . . . I I ... ... .. . . . . . I I , .

I I .

I I

. . I , L CIRSOID S~ENxV37d dill N1OlDVgI gfIJLV~EldFKLl OIDR (1IO SflSXRA MOIDlVN NIWOElrnIHS g UOISIAD-d ~T UO1IA~J S.LINI1l DNIIQH~dO TdOD I lINfl SONAd IOd~lU

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 0.5 t . . . . . --- ,, --. - -- ..- n . . . . i. .. . ....... . . !.. . .---- -- -- -

0%0 '3' 0 ........ " ,,, .........

0.0 (50%0.0) ......

(100%,-0.2

-0.5 .... ... .. ... ... ... ... .... ... ... ... ... ... ...............................

-0 .5 . . . . . . . . . . ... . ............... . . . .

o 7

I

.......... ............. ............ A REA -OF - ------------...............

0 ACCEPTABLE

-2.0 - - - .O PER A TIO N................ . . . . . .

-2.5 - .

-.3.0 . . . . . . .............. ............ .......... . . ......... ........... . ......... .......-----.... ........... .......... ...... ..... .....

0cr*i 0 (0%,-3..4)

- 5 . ... - -----------. -. ----.--.--------. -.---.... ......... ....

-4.0

- -. .. .... ------- . . , . , I... . .. . ....

-45 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 I CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30 ..........

25 ........... .......

zO .(60 MIN, 20.0%)

- 20 15............".""".-.... ............ " ...... " .... ..... . ............

z 0 M 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

0 L......

~~~~~. i ... 7... ..il iiiii-1

.. iii11 i........ ...I..... 11 0

o 0

oZ 0

.... zo ............I ---.

H 0 0l

* . .. - . .. . ....*.. .. . . .. .* ..-. - -.-- - -- * - - -- *:.--- --- -- .'.-,1.... .. . .. ...

C.)

0 zO 0 ............ IR .... ...................

. -z ........ Jý~*~*.l

o ~ ~ . .. I .......... ........... . . ~ < b PH r-#) z H

II

. . . . i .. . . . . . . . . . . . . . . . ._. -. .-. .

. . . . . . . . . . . ". . . . . . . . . . . . . .. . .i . . . . . . . . . . . . . . 0 0

z 0 P. U: C M:,n M :n 0

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

0 z o... ............. ...... Ct) 0 0 H 1 l siq -lIV 1 ,'.

l,*a]1* I H........

u o I U I@ldflO g j z _ - -

_ _ --- -- -- ------ - d. .... ... ~ms~ ........ :. .......... C-U C)0 u) z SPDN 80 dl Q) c-i 0 6 6 S0 C) r--I C* -CN O M2MOd "-IVW*Hl -I. HLVN -40NOIDVNIA

iIn

.C I I I

........................ .............................. ...iI.. I 0) 0IO 0l

. . . . . . . . .. . ...... ... *.. ,zi ------. ! . ..... .... ... ... .... .... ... ....... ... ....... . ...... ... .... .. .. ........ ... .... .. ........... ...... .. . ... ...... .....

0) o 0q C)

. . . ................. .... *....

S.. :.............. .................... ! . . . ...........

...... - ....... . 0 u ... ......... .................

S........ ..... .... ......... . z . . . .... ........ ,n i .. a .. ............... i.................. .........I. .......

0 3 ..... ,,......

......... *l ......... 92ON

..... ........ 09 .. .. c . .... .. ...

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

r.. . .. ... * -. ... ... ... .. .*..... ... ... ........ ...S..... .. ...... ..

H..,0/ S. . . .........

...----. . .. . ... .... .. ................. .. . . . . . . . :. . . .. . . . :. . . . . . -...... .............. .............. ................ . 4o H

0 0 bl z 0 S................... ---- . .-- . . . -.

. --- . ...... S . .&

SN H -------.

N .I

g------.............. .. . . ..... ................ i..................

C))

0 C)

-----. .. ...O.L .: .......... . . . . . .i......

.... 00. .......

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

0 0

U -- - - -- .. . . - -- -- - -- - .... . . . . ... . . . . .

2 c) u

. . . '. ... . .. . . . . . . . . . . .... . . .. .. . . .. . .. .. . .. . . . . . . .. .. . .- ... . . . . . . . . .. .i..

............. ~~~~~~~........ .... .... ..... ... 7 ... . ....... ........

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

............... ... .. I ,,'"la i

q T .L . f! t V ,..S £ 0 ! ......... . . . *...............

i Ul-No M 801 C"l 0

0 6 6r6 C) 6

)EA\Od AIV4IHHI- G9LVN -40NOIIDVH4

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.1.8-1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0.0 *1 10.0 20.0 30.0 40.0 u

z 50.0 i...................

S... . .. ........ ...-------.. ...

60.0 .-. . .----

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

z 70.0 TRNSI ý.NT INSERTION LI.MVIT (.75,0 !INCHES 0 I I 1 u0 80.0 C

90.0 ........... OPERA-TION ------

_.-0 w

UNACCEPTABLE RESTRICTED H

100.0 S... . .. . . . . . . . . . ..... . . ..._ . _. . . . ...

z ... . .............. .............. ..................... &v 0D 110.0 an no iniuii*i*ni*i*n*

-on NOW .:.. .. llinmmmmmmml no *lWi........... no, LONG TERM STEADY STATE INSERTION :LIMITS! (112.5 INCHES) 120.0 130.0

... . . i. . ... iO.........C . . . . . .n.. ....................... . . . . .. ... ....... . . . . . . -. . ......

PB..........................................LE...... -

140.0

o 150.0 I I . . . . I . A - . . 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 I CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 REGION OF UNACCEPTABLE OPERATION 0 10.0 N

5.0 REGION OF ACCEPTABLE OPERATION 0.0 0.0 10.0 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 I CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE 25 z

0 20 C-)

Z 15 C)

(2:.

10 z

0 5 u) 0 0 25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 19 of 26

PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) 2.5 .. , .. . o. i.I .. . .. . .I .. .. ...

I t ... . ...l l..

ACCEPTABLE OPERATION ANY POWER LEVEL MINIMUM OF 1 CEAC OPERABLE 2.4 ------....................

(0.1,2.33)

S................ --........ ........ ................. .... ..... ....

2.3

!(.3 .3 z; (-0.1,2.24) 2.2 -- - - - - - - - - - - -

ACCEPTABLE OPERATION 2;

a POWER AT OR ABOVE 90%

2.1 a u) a)

MINIMUM OF 1 CEAC OPERABLE Ii

, : (0.05:2.03) 2.0 (-0.1,1.96(0N0CCE 2TABL OPERTION ........

1.9 l . . . . . . . . --- . ---- ---

,.......... I... ...... I..........I.... ............... !

1.8 . . . . .- . . . .- . .- . .- . . . . . . . . . . . . . . - .- .- - . . . . . -l ..- l l l I i i I

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

PVNGS UNIT I CORE OPERATING LIMITS REPORT Revision 5 FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) rn,,r 3.6 .. .. . . .. . I .. I

.. I . . ..I 1 4 1 1 IIIll*l 3.5 -----

ACCEPTABLE OPERATION ANY POWER LEVEL CEAC's INOPERABLE 3.4 z

((0.1,3.32) 3.3

"""".i" '."

..... i i.l.......... ii~( 1 1.1"

......... .'13.111.12.).". ii ii. i i....................

z u) -- -----

0.4 3.2 1,3.19)

UNACCEPTABLE

--,, I-3.1 OPERATION I-----------....I......... I......... I...I...... I.....I , ,,

3.0 IlTIlIll I I l Il l l l

l l l l l l l . . . .. . . . . . . .. .. -- . .. .. . . . . . . .. . .

20 0.10 0.15 0.20

-0. -0.15 -0.10 -0.05 0.00 0.05 CORE AVERAGE ASI Page 21 of 26

Revision 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff > 0.98 OPERATIONAL Number of Operating Charging 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 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 > Keff > 0. 9 7 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 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA 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 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 > 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 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 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 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 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 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24 of 26

Revision 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 > 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 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months 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 5 PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Table 3.3.12-5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff _< 0.95 OPERATIONAL Number of Operating Charging Pumps MODE 0 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months ONA 6 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 26 of 26

Revision 5 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 Revision 5 Page 1 of 26

Revision 5 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table of Contents Description Revision # Pagae Cover Page 5 1 Table of Contents 5 2 List of Figures 4 List of Tables 4 4 Affected Technical Specifications 4 5 Analytical Methods 4 6 CORE Operating Limits 3,1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 5 8

3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 5

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 5 8

3.1.8 Part Length CEA Insertion Limits 5 9

3.2.1 Linear Heat Rate (LHR) 5 9

3.2.3 Azimuthal Power Tilt (Tq) 5 9 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 5 9 3.2.5 Axial Shape Index (ASI) 5 10 3.3.12 Boron Dilution Alarm System (BDAS) 55 10 3.9.1 Boron Concentration t0 Page 2 of 26

Revision 4 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT List of Figures Description Revision #

Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature 4 Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 4 121 Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes I and 2 4 13 Figure 3.1.5-1 Core Power Limit After CEA Deviation 4 14 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 4 15 (COLSS in Service)

Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power 4 16 (COLSS Out of Service)

Figure 3.1.8-1 Part Length CEA Insertion Limits Versus Thermal Power 4 17 Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power 4 18 (COLSS in Service)

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 4 19 CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 4 20 Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 4 21 Protection Calculators (COLSS Out of Service, CEACs Inoperable)

Page 3 of 26

Revision 4 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT List of Tables Description Revision # PaUe Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 4 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 4 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 4 24 Dilution Detection as ' 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 4 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 4 26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff< 0.95 Page 4 of 26

Revision 4 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 Length 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 (ASD 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration Page 5 of 26

Revision 4 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT ANALYTICAL METHODS The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the NRC, specifically those described in the following documents:

Title Report No. Rev Date Supplement

1) CE Method for Control Element CENPD N.A. January 1976 N.A.

Assembly Ejection Analysis 0190-A CENPD N.A. April 1983 N.A.

.2) The ROCS and DIT Computer Codes for Nuclear Design 266-P-A

3) Modified Statistical Combina CEN 01-P-A May 1988 N.A.

tion of Uncertainties 356(V)-P-A

4) System TM Inlet Flow Distribu Enclosure N.A. February 1993 1-P 80 tion 1-P to LD 82-054 CENPD N.A. June 1985 3-P-A

5) Calculative Methods for the CE Large Break LOCA Evaluation 132 Model for the Analysis of CE and W Designed NSSS CENPD N.A. January 1977 1-P

6) Calculative Methods for the CE Small Break LOCA Evaluation 137-P Model

7) Fuel Rod Maximum Allowable CEN-372 N.A. May 1990 N.A.

Pressure P-A NFM002 0 September N.A.

8) Arizona Public Service Com pany PWR Reactor Physics Meth 1999 odology Using CASMO-4/

SIMULATE-3 Page 6 of 26

Revision 4 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Title Report No. Rev Date Supplement

9) Technical Manual for the CENTS CE-NPD N.A. June 1993 1-P Code 282-P-A Vols. 1-3 Page 7 of 26

Revision 5 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT The cycle-specific operating limits for the specifications listed are presented below.

3.1.1 - Shutdown Ma- 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-length or part-length CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES 1 and 2 core power reduction is specified in Figure 3.1.5-1.

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 limits 1 shown in Figure 3.1.7-12; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits1 shown in Figure 3.1.7-22.

I 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 .

2The 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 5 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) 3.1.8 - Part Length CEA Insertion Limits One or more CEACs OPERABLE: The part length 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 TiltLTq)

The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to the limit in Figure 3.2.3-1 with COLSS IN SERVICE.

3.2.4 - Departure From Nucleate Boiling Ratio (DNBR)

COLSS IN SERVICE and Both CEACs INOPERABLE - Maintaining COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.

COLSS OUT OF SERVICE and Either One or Both CEACs are OPERABLE Operating within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

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

Page 9 of 26

Revision 5 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT 3.2.5 - Axial Shape Index(AS)

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

COLSS OPERABLE

-0,18 <_ASI* 0.16 for power > 50%

-0.28 < ASI < 0.16 for power < 50%

COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 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 Revisvi on z-'

FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7 .............................. ..

6 ... .......... -.......... ......... ......... ............ -..........

5. ............. ........ ---------................... ................................................. .Q ,.)

REGION OF ACCEPTABLE OPERATION Z/

REGION OF UNACCEPTABLE OPERATION (350, L.O) 0 ' 00. . . . . . . . .200 . 40 00..

0 100 200 300) 400 50IN 600 COLD LEG TEMPERATURE (F)

Page 11 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 4 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7 rrrrr1 r, 1 n1 I$ I 1 g ~ l $ 1 B l l ~ l (500,6.5)::

6 REGION OF ACCEPTABLE 5 OPERATION-4 (350,4.0) 3 ----------------

a H

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

RE GION OF UNACCEPTABLE 2 ----------------------

OPERATION S......................z. .

i I 0 1 ..l l 1 . . i

l . 1 1 1 T t . . . . . . . . . . . . . . . . . . . .

0 100 200 300 400 500 60()

COLD LEG TEMPERATURE (TF Page 12 of 26

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 4 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES I AND 2 0.5

"'.0.05)"" .. .' "r .... .. ..... Ž:

0.0 . (50%, 0.0) *. .

- - - -- - - - - - - - . .. . . . . .. .. .. . . . . .. . -(100%,-0.2

..... ... . --- ...... .... .. . ...... . . . ...... ....... i : . . . . . .:. . ......... -----------..

-0.5

-. ...........- ............ ............................. .. ................ .. ... .......... .... 2............. 7 . . . . ...............

-1.0

-1.5 F5% S..... ...

... ................... ... .. T C 0.0 RE O F ... ... .i............... ......... .. ...............

rj : ACCEPTABLEE

. .-.-- . . --------------------. -(0%,-3.4)J H

-- ................... -OPE RA T I ON . .. ........ --- . . ..... ---

-2.0 0) 0-

-3.0

-(0% ,-3.4)

-3.5

-4.0

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

. . J. . . . . . .i . . --- . . ------- -- ----- ------

-4.5 0 10 20 30 40 50 60 70 80 90 1O0)

CORE POWER LEVEL (L% 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 4 FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION*

30 25 z

0 20 H

15 10 z

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

I I !

1 S....... .. ......... ... ........... .

.. ....... ... ... .z-o .. . ..- ...-. . . ..- - - - - ............ .. . 0 0

....,...........-..:**v

.. .............. W 0:...

... fr*

Q 7.r4"TR 12ýI!(., RR

..... ..... .... 0 0. ... I H 0 0 2 U .........

. .0 (9

0 0 S.. ....--- ......

t :l v -. * - .,-!.......... .......... ....... -,.......... ..... S.............. ........ ..... . 0 0 0 00 U . I: ~~u~~ir I 0 wn C;3

.. ... . ...P - - * .... .. .. .. .. .. .. .. .. .. l.. : i . I. ...

. . . I". . . . . ..--..--. .. . .. . - .

. z C/ Cr CD 0 z H 0 \0 0

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

r-/

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

O S ... . ... 9...... * ..

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

--- -~*i....

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

1-.....

.~ .... 1 1. .i. ......

11"I...... .. ... . .. .

01 0

0D r..

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

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

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

C)

S................ . ... . . . . . 0

. .. W iO A~I~fS ~~11i~5 z --------- ......

Sý1HDN1 801 kdflONIO I I 0ý C. N* ~0 0 (1 0

}JtAMOd 1IVJNd*HH)I CELVW, 4A0 NOIL3VNH,

I I -Q- C

'i-t ¢I. ! m C

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

S.

-o z 0

. ... n- 0'

-C 0 0-

.............. o - K m .l .-

. .............. .....r - * .. . . . ...... ........... .....

-Z S.*...-*.............. ...".. . .......... ....... -o2 u . .............

- 0<

09 1

CIA z~

0 .......

.. 0

....~

~~~M U

'0 Cl 0

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

S......... *

.. * .. ..... ýT m

-w

.i.........:..........., '0 It)

H 09 O - ------- ---

i.--

........ 0I z

[.*

bI)

Cd

. ........... O z ,,,

C/) -- --------

,...H.N.. .O. ..... N.....

N .. > I

...... ...---.- --... -- O 0

0 0..

©

................ ........ ... Ji~~ll'1 IOJIN NONIISNVNI*

01 Q.

UVINS kCIVghLS MMJ~ IIIOHS

.S3IHDNI 09 SdflO'O

.. .........ý....Mnnm.q ........ woomm.m. . ......

-000. ý, - Cl0

'*............ NO SN ItM c .ciwoldo 0:**dn:

IsIA I I 00 cý c r Cl 6 05 6" 6 6D C C) 6 6

)13AA.Od IVV4aHL .l'jVN _4O NOILDVNI

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 4 FIGURE 3.1.8-1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0.0 10.0 - -- --- ----........

"20.0 ........................ - -----

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

30.0 z

40.0 ------- --- ....... - --------------------

50.0 - -------------- -- ------------- ------------

60.0 - -----------......... ------------- ..................................................

u 0z 70.0 ............

7 ---------------------------- ......

0z TRANSIENT INSERTION I LIMIT (75.0:INCHESý 80.0 ---- --- -- ---- ---- --.. .. . .. .... ..... .. ... .. ..----

C/)

H 90.0 - ----- :OPERATION ------ --- OPERATION..o 0

UNACCEPTABLE RESTRICTED

--i............. :..............i . .

100.0 z

110.0 LONG........ . TERM . ...... *.............. STEADY ...... STATE .. . .i.............

-- ---- INSERTIONLIMITS! (112.5

INCHES) 120.0 130.0 OPERATION ACCEPTABLE 140.0 150.0 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 I

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 4 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 REGION OF UNACCEPTABLE t OPERATION 0 10.0 N

5.0 REGION OF ACCEPTABLE OPERATION 0.0 0.0 10.0 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 2 CORE OPERATING LIMITS REPORT Revision 4 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE 25 z

2u 20 F.

15 10

.-.]

ýz 0 5 u

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 4 FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) 2.5 ANY POWER LEVEL MINIMUM OF 1:CEAC OPERABLE 2.4 S .10 03 2.

2.3

............ ................ ................. i........... ...*................ ;............ . . ............ ................... . S

(-0.1,2.24),

z 2.2

-- ....... ....... ...... ........................ ...II....... ........ ! ...... . ...

I a ACCEPTABLE OPERATION z ... . ...... *................ :,...........

POWER AT . . OR . .ABOVE

. .......... . . . . . . 90 %

. . ................ /. . ............ i................

2.1 a. .. . . ..............

C-)

u* NMINIMUM OF ICEAC OPERABW (0.05:2.03)

.... , .. .. : . . (0.1 ,2.0 )

2.0 S:

{-0. 1,1.96.) i!

UNACCEPTABLE

....................... . . . ... . ...............OP R A IN-... .. . .. ....--... ... .. . ..... .. . .. .

1.9 OPERATION I--------- - . ....... ..

1.8

-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 2 CORE OPERATING LIMITS REPORT Revision 4 FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 3.6 ýt A 3.5 ACCEPTABLE OPERATION J ANY POWER LEVEL CEAC's INOPERABLE 3.4 z

0.1.3.32) 3.3 ......... . .

U:

3.2 -----------

(-0.U1,3.19) N

. . . . . . . . i. . . . . . . S..

UNACCEPTABLE 3.1 ............

OPERATION I........... I .... ,,,i., Ik, .. .... I .... ?

3.0 1, 1, ý. I ,, 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

Revision 4 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 4 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.12-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 > 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 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA 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 4 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Table 3.3.12-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 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 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 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 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 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 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24 of 26

Revision 4 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 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 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months 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 4 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 Number of Operating Charging Pumps OPERATIONAL MODE 0 1 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months I 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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

Rcvision 8 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 3 Revision 8 Page 1 of 26

Revision 8 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table of Contents Description Revision # Page Cover Page 8 Table of Contents 8 List of Figures 7 List of Tables 7 4 Affected Technical Specifications 7 5 Analytical Methods 7 6 CORE Operating Limits 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 8 8 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 8 8 3.1.4 Moderator Temperature Coefficient (MTC) 8 8 3.1,5 Control Element Assembly (CEA) Alignment 8 8 3.1.7 Regulating CEA Insertion Limits 8 8 3.1.8 Part Length CEA Insertion Limits 8 9 3.2.1 Linear Heat Rate (LHR) 8 9 3.2.3 Azimuthal Power Tilt (Tq) 8 9 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 8 9 3.2.5 Axial Shape Index (ASI) 8 10 3.3.12 Boron Dilution Alarm System (BDAS) 8 10 3.9.1 Boron Concentration 8 t0 Page 2 of 26

Revision 7 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT List of Figures Description Revision # Pac~e Figure 3.1.1-1 Shutdown Margin Versus Cold Lea Temperature 7 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-I MTC Acceptable Operation, Modes I and 2 7 13 Figure 3.1.5-1 Core Power Limit After CEA Deviation 7 14 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 7 15 (COLSS in Service)

Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power 7 16 (COLSS Out of Service)

Figure 3.1.8-1 Part Length CEA Insertion Limits Versus Thermal Power 7 17 Figure 3.2.3-i Azimuthal Power Tilt Versus Thernmal Power 7 18 (COLSS in Service)

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 7 19 CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 7 20 Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 7 21 Protection Calculators (COLSS Out of Service, CEACs Inoperable)

Page 3 of 26

Revision 7 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT List of Tables Description Revision Lige Table 3.3.12- Required Monitoring Frequencies for Backup Boron 7 11)1 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 7 23 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff > 0.97 7

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 7 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 7 26 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95 Page 4 of 26

Revision 7 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 311.2 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 Length 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 7 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT ANALYTICAL METHODS The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the NRC, specifically those described in the following documents:

Title Report No. Rev Date Supplement

1) CE Method for Control Element CENPD N.A. January 1976 N.A.

Assembly Ejection Analysis 0190-A

2) The ROCS and DIT Computer CENPD N.A. April 1983 N.A.

Codes for Nuclear Design 266-P-A

3) Modified Statistical Combina CEN 01-P-A May 1988 N.A.

tion of Uncertainties 356(V)-P-A

4) System 8 0 TM Inlet Flow Distribu Enclosure N.A. February 1993 I-P tion 1-P to LD 82-054

5) Calculative Methods for the CE CENPD N.A. June 1985 3-P-A Large Break LOCA Evaluation 132 Model for the Analysis of CE and W Designed NSSS

6) Calculative Methods for the CE CENPD N.A. January 1977 I-P Small Break LOCA Evaluation 137-P Model

7) Fuel Rod Maximum Allowable CEN-372 N.A. May 1990 N.A.

Pressure P-A

8) Arizona Public Service Com NFM002 0 September N.A, pany PWR Reactor Physics Meth 1999 odology Using CASMO-4/

SIMULATE-3 Page 6 of 26

Revision 7 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Title Report No. Rev Date Supplement CE-NPD N.A. June 1993 I-P

9) Technical Manual for the CENTS Code "2)S -P- A Vols. 1-3 Page 7 of 26

PVNGS UNIT3 CORE OPERATING LIMITS REPORT The cycle-specific operating limits for the specifications listed are presented belo~v.

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.

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 fCEA) Alignment With one or more full-length or part-length CEAs rnisaligned fromn any other CEAs in its group by more than 6.6 inches, the minimum required MODES I and 2 core power reduction is specified in Figure 3.1.5-1.

3.1.7 - Regulating CEA Insertion Limits One or more CEACs OPERABLE: With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limitsi shown in Figure 3. 1.7-12; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits' shown in Figure 3.1.7-22.

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 .

2The 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

Reviisic 8 PVNGS UNIT 3 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) 3.1.8 - Part Length CEA Insertion Limits One or more CEACs OPERABLE: The part length 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 (T])

The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to the limit in Figure 3.2.3-1 with COLSS IN SERVICE, 3.2.4 - Departure From Nucleate Boiling Ratio (DNBR)

COLSS IN SERVICE and Both CEACs INOPERABLE - Maintaining COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.

COLSS OUT OF SERVICE and Either One or Both CEACs are OPERABLE Operating within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

COLSS OUT OF SERVICE and CEACs INOPERABLE - Operating within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel, Page 9 of 26

Revisio'n 8 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT 3.2.5 - Axial Shape Index (AST)

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

COLSS OPERABLE

-0.18 < ASI < 0.16 for power > 50%

-0.28 < ASI < 0. 16 -for power < 50%

COLSS OUT OF SERVICE (CPC)

-0.10*_< ASI*< 0,t0 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 7 FIGURE 3.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

6 ------------- ---------------------

-.......................--------- 500,5.0) .,,

5)

REGION OF ACC:EPTABLE

<1 OPERATION C> 4 - - - - - - -- - - -- - - - - - - -. - - - - - -.

.a ..

z 0 3 i REGION::OF

UNACCEPTABLE 2 - -----------------

OPERATION I

jd -----------------------

(350,J.0) 0 I I

.l . ~ l

. . ~

. l ~ l

. . . l l

I 1

. . . . . . *I***I3 ISI*uII**US 0 100 200 300 400 500 600 COLD LEG TEMPERATURE (°F)

Page 11 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 7 FIGURE 3.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED (500,6.5);:

6 ............

REGION OF ACCEPTABLE 5 ..OPERATION (350,4.0) zH

©t REG ION OF

... .............. i .................. UNALCCEPTABLE S.

OPE;RATION 0

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

Page 12 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 7 FIGURE 3.1.4-1 MTC ACCEPTABLE OPERATION, MODES 1 AND 2 0.5

.t,.,% :~"J'"'"'..,,,,,,*

.,,.5:,"+'

. ~ "' ~ " '*,,,,}. ~ ... .. ~........... * ~ +~ ......... .... ....

6 ...

oo ,

(100%',6

-+------............ ... ....... . "* .

0.0 (50%. 6.0) .........

(100%,-o.2

-0.5

[.L.

-1.0 "z

U

-1.5 ....

. ...... ....... ......... --- M TC A REA -OF ..

ACCEPTABLE 0

U

-2.0 -------- .... .. -P O ER A T ION ---..................- ..............

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

00:. -3.0 S..

[.0

-(o%,-3.4)

-3.5

. . . . .-----.. . .. . . .. . . . . . .......... --..--- .............. .............. i........ ...... :.......................................

-4.0

-4.5 0 10 20 30 40 50 60 70 80 90 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

End of Cycle Limit U - US U*

Beginning of Cycle Limit TECH SPEC 3.1.4 Maximum Upper Limit Page 13 of 26

ION SIKNOIIDflGTh1 XIHDMflJ AýMfD IHAJY SIH, Nad NEIMPOd

'IVFIqUHHI U3IJVS -IO /o 01 U3JflCThI SI S9EAAOd 39IOD NaHPA SahLflNIN 'NOIlVIA3CQ '8ThLV RNIJI 09 09 017 0C 0z 01 0 z

....... .... 09)

N----------- --------- ----------

z V~ ~J3IAVIIIAI ~HX~d DJO

NOIVIIAG

I~

--- ~1 d3~ ~d

0 f

IIIII II

.o 0*

tr. . . ., . . ~~~~~~

~-

-o

-4 z o 0

...... ....:........ --I H ............--

. ..*6 . :*

. .------ . . ----- " o *i. .........

.. . . ....... o C)

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

... .......... 01 S........ .. . ... Q----- 4 i...........Vý *. .... !....... ................ .. .. ...........

F_ .1 cr C/)

0 S.. . ... ... . .. .. .. . "cl

...... ..* . . * -...-- .............. '.. ....... . ...... .." .......... . . .:.................. ----------- .. ................. ~ -.0< uz 0 A0 z

0 C.) z S. ------- ------~~-- . .... ----- -- ------- ----- -.........i ........... .

i. . . .. ..... . .. ... .. .. . .. .. .. . ,.. ...... . ....... .. ........ .... ..... : .... ........ ..... ; . . . .... ... .... ....... ........ ................. ,..... ..... . .

1-1 < .. . . . . . . . . SI

ýO ------- -------- ..... ......... ....

0 "-C-1 HýDN .lN 819 H. 0 0 C,.)

00 u

0© o <

0 I" I: I: I"SHHDNl 8091_ 9gdflOHDO 0--

- 0 Cl 0 6 6 Na3kOd '1VVa*I*I *,IVN1 JO NOIIDVNt

03 II I I I:

i .......... ..... ......... . :............. ...................------ .............. ..................

0 0

............. ,4..... z ... *...... ........... !..................................S... .. . . .

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

.- 0

.. .. .. .... . Z .

z. .0 0 '0 u ........... "0 "

H

,............ ... , ... 0... ............ *.:......

... ....iii ....

..... .. ....... 0' F ci ............. i............ ... i... ..... .. ... Cl 0

Q S............. .... * .... ..i-............------ ----------------. .............-. S..... . . ......... N 0 9 0 DIO

(/)

C/) 0 1,0 0d H-. 0<

,0 0 -ON 0 oz 91.

.............. .......... ....... !........ ... . . . !..... ............. i.... . . . .......... ....... ................. *-0.Q z

0 z -----------------

0 -1 z 0 S....

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

J.I..I'.. .... s*oHSNI 2ILVIS AGIVaS WdlL'd{OHS ... . . . ... . . ..

a~~~~~ as .~ saa ~ *5

............. as a ....... ..- a...

... 0 z0 Iml.................

.. .. . . . W." ...... w mmmmm

..... 0...

z (.)4 In! S:HDM 801 o T dflO-do i 0 ON 00 C.,

6, 6 6 6 S 6 6 0O HY1AOd 1Vrl'NHItJ cI*hLVHI f1O NOLLDV'dH

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 7 FIGURE 3.1.8-1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0.0 S. . . . . . . i l l l l 4 D i l l l i m b 10.0 ------- ----------------------..

20.0 ..........

30.0 z

40.0 ..........

. .. .. . ... . ... r . . .. . . .. . .. .. . ..

50.0 4 i . ...i .....

ANSIET INSRTIONLIMIT(75.0INHS F

60.0 r.*

z 70.0 - - - . .. . . . . . . .--

0 80.0 o 0

90.0 -.OPERATION ......... -- --.--..-.--.OPERA-TIO N ............. --...........

u H UNACCEPTABLE REST RICTED S. .............------ -..i 100.0 S............. !............

z S.............. ..........

Ei.

110.0 tn LONG TERM STEADY STATE. . INSERTION:LIMITS: . . . . . . .... .--

(112.5 INCHES) 120.0 130.0 OPERATION ACCEPTABLE 140.0 S.. . .i. . . . . . ... .:. . . ... . . . .. - . . ... ... -- . -- . . . . . ...

150.0 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 Revision 7 FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER (COLSS IN SERVICE) 20.0 15.0 REGION OF UNACCEPTABLE OPERATION H=,=

0.

10.0 H

N 5.0 REGION OF ACCEPTABLE OPERATION 0.0 - - - - - - - - - - - - - - - - - - - - - - - - - .- - l- I- .- .- .- .--.

0.0 10.0 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 7 FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE 25 0u0 20 (9

15 0~I 10 0

0m (9l -.

z 5

0 0 25 50 75 100 CORE POWER LEVEL

(% OF RATED THERMAL POWER)

Page 19 of 26

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 7 FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) 2.5 . . i .

i .. i i l I I . .

ACCEPTABLE OPERATION ANY POWER LEVEL MINIMUM OF 1 CEAC OPERABL 2.4

ý(o.032.33?)

(0.1,2.33) 2.3

(-0.1,2.24) z 2.2 U U

ACCEPTABLE OPERATION a U rh POWER AT OR ABOVE 90 %

rz. 2.1 S........................ ...... ...............

MINIMUM OF 1 CEAC OPERABL]4 S(0.05i2.03) :

--- '-,'.7 ---.....i

..-- (0.1,2.20.3).

2.0

(-0.,1.6 iUNACCEPTABLE 1.9 ................. -OPERATION I I- - - -. _ _. .. .. ..

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

1 9 . . . .l. . . .i. i... I .. . .. I . .. . . . . . .l . l . l... . l. .. . . . . l.. l.

. l.. .

l. l..

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

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revisiora 7 FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 3.5 ACCEPTABLE OPERATION ANY: POWER LEVEL CEAC's INOPERABLE 3.4 ..........................

z (0.1,3.32)

(0.0,3.32) 3.3 ................---------

z 3.2 - ------ -----

(-0.1,3.19)

.... S.........--

UNACCEPTABLE 3.1 ...............

OPERATION lll .. ...

ll LLJLA4LAA .I II BS II 53,55 I I II II B tt*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

Revision 7 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 7 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table 3.3.12-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 Ž Keff > 0. 9 7 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 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA 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 7 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 _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 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 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 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 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 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 24 of 26

Revision 7 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 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months 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 7 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 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months I hour 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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

ML020860034

Text

Dear Sirs:

Subject:

Navigation menu

Search