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 Reactor Trip Breakers Open ja 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 (COLSS in Service)0 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 t t Revision 3~PViiGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Table of Contents (Continued)

~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 CEAC's Inoperable 15 Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC's Operable)16 Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC's Inoperable) 17 List of Tables 18 Table 3.1.2.7-1 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff>0.98 19 Table 3.1.2.7-2 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')0 Table 3.1.'2.7-3 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 21 Table 3.1.2.7-4 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 22 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 7 I 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 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-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 LI T FFI 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.Page 6 of 23