ML17313A670

Rev 2 to PVNGS Unit 2 Colr.

ML17313A670
Person / Time
Site:	Palo Verde
Issue date:	11/04/1998
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17313A671	List: ML17313A670 ML17333A073
References
NUDOCS 9811100252
Download: ML17313A670 (8)

Text

t t PVNGS UNIT 2 CORE OPERATING LIMITS REPORT

, Revision 2 CORE OPERATING LIMITSREPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

UNIT 2 Revision 2 Page 1 of 25 8<<<oo252 ~sooas29 PDR P

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~ ~ Revision 2 PVNGS UNIT 2 CORE OPERATING LIMITSREPORT Table of Contents Pe~~cri )tion g~evi i~¹ Paae Cover Page Table of Contents Affected Technical Specifications CORE Operating Limits 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 List of Figures Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 10 Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 Figure 3.1.5-1 Core Power Limit After CEA Deviation 12 Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 13 (COLSS in Service)

Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power 1 14 (COLSS Out of Service)

Figure 3.1.8-1 Part Length CEA Insertion Limits Versus Thermal Power 1 15 Page 2 of 25

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Revision 2 PVNGS IT 2 CORE OPERATING LIMITS PORT <

Table of Contents (Continued)

~Descri tion Revision ¹ ~pa e Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power 16 (COLSS in Service)

Cl Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 17 CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 18 Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 19 Protection Calculators (COLSS Out of Service, CEACs Inoperable)

List of Tables 20 Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 21 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 22 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 23 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 24 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 25 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95 Page 3 of 25

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t PVNGS UNIT 2 CORE OPERATING LIMITSREPORT l Revision 2 RK PKRATIN LI IT - NTIN KD

.25- ial ha e n ex A The core average AXIALSHAPE INDEX (ASI) shall be maintained within the following limits:

COLSS OPERABLE

-0.18 5 ASI 5+0.16 for power > 50%

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-0.28 < ASI 6 +0.16 for power 50%

COLSS OUT OF SERA'ICE (CPC)

-0.10 < ASI 5 0.10 3..12- B ron Dilution larm tern BDA With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring &equency specified in Tables 3.8.12-1 through 8.8.12-5.

.9. - B ron ncentration 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.

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