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 OImamma X,mn S HEI oar PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT2 CYCLE 6 Revision 1 9602150i36 9601.i9 PDR ADGCK 05000528 P

PDR

Revision 1

CORE OPERATING LIMITSREPORT PALO VERDE NUCLE<AR GENERATINGSTATION (PVNGS)

UNIT2 CYCLE 6 REVISION HISTORY Revision' Date 3/24/95 12/14/95

~Pa es Issue for Use (23 Total Pages)

Replaced Pages 1,3,4,6,7,8,9 (23 Total Pages)

Page 3 of 23

Revision 1

Comm Orma.mme. uMnS ju,r oar PALO VERDE NUCLEARGENERATING STATION (PVNGS)

UNIT2 CYCLE 6 This Core Operating Limits Report for PVNGS Unit 2 Cycle 6 has been prepared in accordance with the requirements ofTechnical Specification 6.9.1. The core operating limits have been developed using the NRC approved. methodologies specified in Section 6.9.1.10 ofthe Palo Verde Unit 2 Technical Specifications.

FFF.

T 1) 3.1.1.2 F

H I

P i

I Shutdown Margin - Reactor Trip Breakers Closed 2) 3:1.1.3 Moderator Temperature Coefficient 3) 3.1.2.7 Boron DilutionAlarms 4) 3.1.3.1 Movable Control Assemblies - CEA Position 5) 3.1.3.6 6) 3.1.8.7 7) 3.2.1 8) 3.2.8 Regulating CEA Insertion Limits

. Part Length CEA Insertion Limits Linear Heat Rate Azimuthal Power Tilt-Tq 9) 3.2.4 DNBRMargin 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 withinthe area ofAcceptable Operation shown on Figure 2.

Page 4of23

Revision 1

PVNGS UNIT2 CYCLE 6 CORE OPERATING LMITSREPORT 24-DNB M COLSS INSERVICE and Both CEAC's INOPEHABLE-Maintaining COLSS calculated core power less than or equal to COLSS calculated.

core power operation limitbased 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 ofacceptable operation of Figure 9 using any operable CPC channel.

COLSS OUT OF SERVICE and CEAC's INOPERABLE - Operating withinthe region ofacceptable operation ofFigure 10 using any operable CPC channel.

2 i l h

In The core average AXIALSHAPE INDEX(ASI) shall be maintained within the followinglimits:

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 ofall filledportions ofthe Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration greater than or equal to 2150 ppm.

Page 6 of 23

I(

II J

I t

t Revision 1

PVNGS VNIT2 CYCLE 6 CORE OPERATING LIMITSREPORT

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 LimitsVersus Thermal Power (COLSS In Service).

5. CEA Insertion LimitsVersus Thermal Power (COLSS Out ofService)

6. Part Length CEA Insertion LimitVersus Thermal Power.

7. Azimuthal Power TiltLimitVersus Thermal Power (COLSS In Service).

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

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

Page7 of23

Revision 1

PVNGS UNIT2 CYCLE 6 CORE OPERATING LIMITSREPORT FIGURE 1 SHUTDOWNMARGINVERSUS COLD LEG TEMPERATURE Reactor Trip Breakers Closed (500, 6.5 5

~o 4

j5 O

RE IONOF ACCEPTABLE OPERATION REGION OF UNACCEPTABLE OPERATION (350 4.0) 100 200 300 COLD LEG TEMPERATURE ( F) 400 500

. 600 Page 8 of 23

0

~

PVNGS UNXT2 CYCLE 6 CORE OPERATING LXMITSREPORT Revision 1

FIGURE 2 - MTC ACCEPTABLE OPERATION, MODES 1 AND 2 oo goo CJ C)

C4 CQ CJ C)

I W I O I ~oO I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I O IO l @o I O I LQ I

I I

I I

I I

I I

I I

I I

I Mo I

I go I o I

I II Ilnlo g

I ~o 0)

O O

O CD CD 0)

EQ hQo U

UJ p~z c(KI p

~~a <

UJ CC OOUJ I-Oo x<p ID D

O OoC UJ CO I

I I

@o I

OO I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I I

I

~oo l o

S=lg Pg 9l4 OC np

@o S"1 OO

~

O (8o/dV~.OT~) 'LNSIOI88300 SKQJVHMPIZJ 'HOZVHZGON Page 9 of 23

I