ML17312A529

Colr,Pvngs,Unit 2 Cycle 6, Rev 1

ML17312A529
Person / Time
Site:	Palo Verde
Issue date:	12/14/1995
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17312A527	List: ML17312A526 ML17312A528 ML17312A529 ML17312A530
References
NUDOCS 9602150136
Download: ML17312A529 (13)

Text

0 Coa.E OI mamma X,mn S HEI oar PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 CYCLE 6 Revision 1 9602150i36 9601.i9 PDR P

ADGCK 05000528 PDR

Revision 1 CORE OPERATING LIMITSREPORT PALO VERDE NUCLE<AR GENERATING STATION (PVNGS)

UNIT 2 CYCLE 6 REVISION HISTORY Revision' Date ~Pa es 3/24/95 Issue for Use (23 Total Pages) 12/14/95 Replaced Pages 1,3,4,6,7,8,9 (23 Total Pages)

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Revision 1 Comm Orma.mme. uMnS ju,r oar PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 CYCLE 6 This Core Operating Limits Report for PVNGS Unit 2 Cycle 6 has been prepared in accordance with the requirements of Technical Specification 6.9.1. The core operating limits have been developed using the NRC approved. methodologies specified in Section 6.9.1.10 of the Palo Verde Unit 2 Technical Specifications.

FFF. T F H I P i I

1) 3.1.1.2 Shutdown Margin - Reactor Trip Breakers Closed

2) 3:1.1.3 Moderator Temperature Coefficient

3) 3.1.2.7 Boron Dilution Alarms

4) 3.1.3.1 Movable Control Assemblies - CEA Position

5) 3.1.3.6 Regulating CEA Insertion Limits

6) 3.1.8.7 . Part Length CEA Insertion Limits

7) 3.2.1 Linear Heat Rate

8) 3.2.8 Azimuthal Power Tilt - Tq

9) 3.2.4 DNBR Margin

10) 3.2.7 Axial Shape Index

11) 3.9.1 Boron Concentration R PER I LI T The cycle-specific operating limits for the specifications listed are presented below.

8.1.1.2 - Shutdown Mar 'n - Reactor Tri Breakers Closed The Shutdown Margin shall be greater than or equal to that shown in Figure l.

ll -M r rTm r ir Aiin The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown on Figure 2.

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Revision 1 PVNGS UNIT 2 CYCLE 6 CORE OPERATING LMITS REPORT 24- DNB M COLSS IN SERVICE and Both CEAC's INOPEHABLE - Maintaining COLSS calculated core power less than or equal to COLSS calculated.

core power operation limit based on DNBR decreased by the allowance shown in Figure 8.

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

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

2 - i l h In The core average AXIALSHAPE INDEX (ASI) shall be maintained within the following limits:

COLSS OPERABLE

-0.28 < ASI < 0.27 COLSS OUT OF SERVICE (CPC)

-0.20 < ASI 5 0.20 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 greater than or equal to 2150 ppm.

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t PVNGS VNIT2 CYCLE 6 CORE OPERATING LIMITSREPORT Revision 1

1. Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Closed )

1

2. MTC Acceptable Operation, Modes 1 and 2.

3. Core Power LimitAfter CEA Deviation.

4. CEA Insertion Limits Versus Thermal Power (COLSS In Service).

5. CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)

6. Part Length CEA Insertion LimitVersus Thermal Power.

7. Azimuthal Power Tilt LimitVersus Thermal Power (COLSS In Service).

8. COLSS DNBR Power Operating LimitAllowance for Both CEACs Inoperable.

9. DNBR Margin Operating LimitBased on Core Protection Calculators (COLSS Out of Service, CEACs Operable) 10.DNBR Margin Operating LimitBased on Core Protection Calculators (COLSS Out of Service, CEACs Inoperable)

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Revision 1 PVNGS UNIT 2 CYCLE 6 CORE OPERATING LIMITSREPORT FIGURE 1 SHUTDOWN MARGINVERSUS COLD LEG TEMPERATURE Reactor Trip Breakers Closed (500, 6.5 RE IONOF ACCEPTABLE OPERATION 5

(350 4.0)

~o 4 j5 REGION OF O

UNACCEPTABLE OPERATION 100 200 300 400 500 . 600 COLD LEG TEMPERATURE ( F)

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0 . ~ Revision 1 PVNGS UNXT 2 CYCLE 6 CORE OPERATING LXMITS REPORT FIGURE 2 - MTC ACCEPTABLE OPERATION, MODES 1 AND 2 o W o I I

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