ML17312B601

Rev 3 to PVNGS Unit 2 Cycle 7 Colr.

ML17312B601
Person / Time
Site:	Palo Verde
Issue date:	07/30/1997
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17312B598	List: ML17312B597 ML17312B599 ML17312B600 ML17312B601 ML17312B602
References
NUDOCS 9708050256
Download: ML17312B601 (6)

Text

Revision 3 Pages Unit 2 COLR 9708050256 970730 PDR ADQCK 05000528 P .,PD>>

1 CORK OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 CYCLE 7 Revision 3 Page 1 of 23

Revision 3 PVNGS UNIT 2 YCLE 7 CORE OPERATING LIMI S REPORT Table of Contents

~Descri rion Revision 4 Pa~e Cover Page Table of Contents Affected Technical Specifications CORE Operating Limits 3.1.1.1 Shutdown Margin - Reactor Trip Breakers Open 3.1.1.2 Shutdown Margin - Reactor Trip Breakers Closed 3.1.1.3 Moderator Temperature Coefficient 3.1.2.7 Boron Dilution Alarms 3.1.3.1 Movable Control Assemblies - CEA Position 3.1.3.6 Regulating CEA Insertion Limits 3.1.3.7 Part Length CEA Insertion Limits 3.2.1 Linear Heat Rate 3.2.3 Azimuthal Power Tilt - Tq 3.2.4 DNBR Margin 3.2.7 Axial Shape Index 3.9.1 Boron Concentration (Mode 6)

List of Figures Figure 3.1.1.1-1 Shutdown Margin Versus Cold Leg Temperature ja Reactor Trip Breakers Open Figure 3.1.1.2-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed Figure 3.1.1.3-1 MTC Acceptable Operation, Modes 1 and 2 Figure 3.1.3.1-1 Core Power Limit After CEA Deviation 10 Figure 3.1.3.6- l CEA Insertion Limits Versus Thermal Power 0 (COLSS in Service)

Figure 3.1.3.6-2 CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)

Figure 3.1.3.7-1 Part Length CEA Insertion Limits Versus Thermal Power 0 13 Page 2 of 23

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t PViiGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Table of Contents (Continued) t Revision 3

~Descri sion Revision 0 Pa~e Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 15 CEAC's Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 16 Protection Calculators (COLSS Out of Service, CEAC's Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 17 Protection Calculators (COLSS Out of Service, CEAC's Inoperable)

List of Tables 18 Table 3.1.2.7-1 Required Monitoring Frequencies for Backup Boron 19 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98

')0 Table 3.1.2.7-2 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps

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and Plant Operational Modes for 0.98 > Keff 0.97 Table 3.1.'2.7-3 Required Monitoring Frequencies for Backup Boron 21 Dilution Detection as a Function of Operating Charging Pumps

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and Plant Operational Modes for 0.97 Keff > 0.96 Table 3.1.2.7-4 Required Monitoring Frequencies for Backup Boron 22 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff > 0.95 I

7 Table 3.1.2.7-5 Required Monitoring Frequericies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95 Page 3 of'23

Revision 3 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT RE P RATIN I'vIIT - NTIN >ED

.2.3 - Azimuthal Power Tilt - T The AZIMUTHALPOWER TILT (Tq) shall be less than or equal to the limit in Figure 3.2.3-1 with COLSS IN SERVICE.

3.2.4 - DNBR Mar n COLSS IN SERVICE and Both CEAC's INOPERABLE - Maintaining COLSS calculated core p'ower 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 CEAC's 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 CEAC's INOPERABLE - Operating within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel.

3.2.7 - Axial Sha e Index The core average AXLES SHAPE INDEX (ASI) shall be maintained within the following limits:

COLSS OPERABLE

-0.188 < ASI < 0.169 for power > 50 lo

-0.288 < ASI < 0.169 for power < 50 lo COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 o o o centration ode 6)

The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 2500 ppm.

LI T FFI Page 6 of 23