W3F1-2019-0014, Core Operating Limits Report-Cycle 23 Revision 0

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Core Operating Limits Report-Cycle 23 Revision 0
ML19045A695
Person / Time
Site: Waterford Entergy icon.png
Issue date: 02/14/2019
From: Signorelli J
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
W3F1-2019-0014
Download: ML19045A695 (20)
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Text

W3F1-2019-0014 Page 2 cc: Mr. Scott Morris Regional Administrator U. S. Nuclear Regulatory Commission Region IV RidsRgn4MailCenter@nrc.gov NRC Senior Resident Inspector Waterford Steam Electric Station Unit 3 Frances.Ramirez@nrc.gov Chris.Speer@nrc.gov NRC/NRR Project Manager for Waterford 3 April.Pulvirenti@ nrc.gov

Attachment to W3F1-2019-0014 Waterford 3 Core Operating Limits Report Cycle 23 Revision 0 (Attachment contains 17 pages)

ENTERGY OPERATIONS WATERFORD 3 CORE OPERATING LIMITS REPORT FOR CYCLE 23 MODES 5 AND 6 ONLY REVISION 0

WATERFORD 3 CORE OPERATING LIMITS REPORT CYCLE 23 MODES 5 AND 6 ONLY REVISION 0 INDEX PAGE I. INTRODUCTION 5 II. AFFECTED TECHNICAL SPECIFICATIONS 6 3.1.1.1 Shutdown Margin - Any CEA Withdrawn COLR 3/4 1-1 3.1.1.2 Shutdown Margin - All CEAs Fully Inserted COLR 3/4 1-3 3.1.2.9 Boron Dilution COLR 3/4 1-15 3.9.1 Boron Concentration COLR 3/4 9-1 III. METHODOLOGIES 17 LIST OF EFFECTIVE PAGES Revision 0 Pages 1-6, COLR 3/4 1-1, 1-3, 1-15, 9-1, and Page 17 WATERFORD 3 Page 2 CYCLE 23 REVISION 0

LIST OF FIGURES PAGE COLR Figure 1 Shutdown Margin Versus Cold Leg Temperature COLR 3/4 1-3A LIST OF EFFECTIVE FIGURE PAGES Revision 0 COLR 3/4 1-3A WATERFORD 3 Page 3 CYCLE 23 REVISION 0

LIST OF TABLES PAGE COLR Table 1 Required Monitoring Frequencies for Backup COLR 3/4 1-15A Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff Greater Than 0.98.

COLR Table 2 Required Monitoring Frequencies for Backup COLR 3/4 1-15B Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff Greater Than 0.97 and Less Than or Equal to 0.98.

COLR Table 3 Required Monitoring Frequencies for Backup COLR 3/4 1-15C Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff Greater Than 0.96 and Less Than or Equal to 0.97.

COLR Table 4 Required Monitoring Frequencies for Backup COLR 3/4 1-15D Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff Greater Than 0.95 and Less Than or Equal to 0.96.

COLR Table 5 Required Monitoring Frequencies for Backup COLR 3/4 1-15E Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff Greater Than or Equal to 0.95.

LIST OF EFFECTIVE TABLE PAGES Revision 0 COLR 3/4 1-15A through COLR 3/4 1-15E WATERFORD 3 Page 4 CYCLE 23 REVISION 0

WATERFORD 3 CORE OPERATING LIMITS REPORT CYCLE 23 FOR MODES 5 AND 6 ONLY REVISION 0 I. INTRODUCTION This CORE OPERATING LIMITS REPORT (COLR) has been prepared in accordance with the requirements of Waterford 3 Technical Specification 6.9.1.11 for Technical Specifications 3.1.1.1 and 3.1.1.2, Shutdown Margin, 3.1.2.9, Boron Dilution, and 3.9.1, Boron Concentration only for Waterford 3 Cycle 23. This revision of the COLR is applicable for Modes 5 and 6 only. This document will be revised to address the remaining parameters listed in Technical Specification 6.9.1.11 prior to entering Mode 4. The core operating limits have been developed using the NRC approved methodologies specified in Section III. This is Revision 0 of the Cycle 23 COLR.

There were no major changes between the Cycle 23, Revision 0, COLR and the Cycle 22, Revision 0, COLR. This is the initial issuance of the Cycle 23 COLR. It is applicable to operations in Modes 5 and 6 only. There are no changes to the values for the required Shutdown Margin in Mode 5 from the latest revision to the Cycle 22 COLR. There are no changes to the values for the required RCS boron concentration monitoring frequencies and Charging Pump operation limits in Modes 5 and 6 from the latest revision to the Cycle 22 COLR. There are no changes to the values for the required RCS boron concentration in Mode 6 from the latest revision to the Cycle 22 COLR.

WATERFORD 3 Page 5 CYCLE 23 REVISION 0

II. AFFECTED TECHNICAL SPECIFICATIONS WATERFORD 3 Page 6 CYCLE 23 REVISION 0

CORE OPERATING LIMITS REPORT SHUTDOWN MARGIN - ANY CEA WITHDRAWN 3.1.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 5.15% k/k when Tavg is greater than 200 F or 2.0% k/k when Tavg is less than or equal to 200 F.

WATERFORD 3 COLR 3/4 1-1 CYCLE 23 REVISION 0

CORE OPERATING LIMITS REPORT SHUTDOWN MARGIN - ALL CEAs FULLY INSERTED 3.1.1.2 The SHUTDOWN MARGIN shall be maintained within the region of acceptable operation of COLR Figure 1.

WATERFORD 3 COLR 3/4 1-3 CYCLE 23 REVISION 0

Shutdown Margin Versus Cold Leg Temperature (All CEAs Fully Inserted) 6 5

(500 oF, 4.6%)

4 Shutdown Margin (%K/K) 3 Acceptable Operation 2

(400 oF, 1.5%)

1 Unacceptable Operation 0

0 100 200 300 400 500 600 Cold Leg Temperature (oF)

COLR Figure 1 WATERFORD 3 COLR 3/4 1-3A CYCLE 23 REVISION 0

CORE OPERATING LIMITS REPORT BORON DILUTION 3.1.2.9 See COLR Tables 1 through 5 for required RCS boron concentration monitoring frequencies and Charging Pump operation limits.

SURVEILLANCE REQUIREMENTS Each required boron dilution alarm shall be adjusted to less than or equal to 1.75 times (1.75x) the existing neutron flux (cps) at the following frequencies:

a. No sooner than one half hour after shutdown and no later than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> after shutdown.
b. At least once per one-half (1/2) hour if the reactor has been shut down > 0.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> but < 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />
c. At least once per hour if the reactor has been shutdown > 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> but < 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />.
d. At least once per 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> if the reactor has been shut down > 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> but < 25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br />.
e. At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> if the reactor has been shut down > 25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> but < 21 days.
f. At least once per 7 days, if the reactor has been shutdown 21 days.

WATERFORD 3 COLR 3/4 1-15 CYCLE 23 REVISION 0

COLR TABLE 1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff GREATER THAN 0.98 Keff 0.98 OPERATIONAL Number of Operating Charging Pumps

  • MODE 0 1 2 3 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> Operation not allowed **

RCS filled 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> Operation not allowed **

RCS partially drained 6 Operation not allowed **

  • Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.
    • Charging pumps shall be verified to be inoperable by removing power to the required number.

WATERFORD 3 COLR 3/4 1-15A CYCLE 23 REVISION 0

COLR TABLE 2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff GREATER THAN 0.97 AND LESS THAN OR EQUAL TO 0.98 0.98 Keff 0.97 OPERATIONAL Number of Operating Charging Pumps

  • MODE 0 1 2 3 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 0.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> Operation not allowed**

RCS filled 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> Operation not allowed**

RCS partially drained 6 Operation not allowed**

  • Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.
    • Charging pumps shall be verified to be inoperable by removing power to the required number.

WATERFORD 3 COLR 3/4 1-15B CYCLE 23 REVISION 0

COLR TABLE 3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff GREATER THAN 0.96 AND LESS THAN OR EQUAL TO 0.97 0.97 Keff 0.96 OPERATIONAL Number of Operating Charging Pumps

  • MODE 0 1 2 3 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> Operation not allowed**

RCS filled 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 0.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> Operation not allowed**

RCS partially drained 6 Operation not allowed**

  • Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.
    • Charging pumps shall be verified to be inoperable by removing power to the required number.

WATERFORD 3 COLR 3/4 1-15C CYCLE 23 REVISION 0

COLR TABLE 4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff GREATER THAN 0.95 AND LESS THAN OR EQUAL TO 0.96 0.96 Keff 0.95 OPERATIONAL Number of Operating Charging Pumps

  • MODE 0 1 2 3 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 2.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 0.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> Operation not allowed**

RCS filled 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 2.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> Operation not allowed**

RCS partially drained 6 Operation not allowed**

  • Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.
    • Charging pumps shall be verified to be inoperable by removing power to the required number.

WATERFORD 3 COLR 3/4 1-15D CYCLE 23 REVISION 0

COLR TABLE 5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff LESS THAN OR EQUAL TO 0.95 Keff 0.95 OPERATIONAL Number of Operating Charging Pumps*

MODE 0 1 2 3 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 3.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 1.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> RCS filled 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 2.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> 0.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> Operation not allowed**

RCS partially drained 6 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 2.25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> Operation not allowed**

  • Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.
    • Charging pumps shall be verified to be inoperable by removing power to the required number.

WATERFORD 3 COLR 3/4 1-15E CYCLE 23 REVISION 0

CORE OPERATING LIMITS REPORT BORON CONCENTRATION 3.9.1 While in Mode 6, the RCS boron concentration shall be maintained sufficiently to ensure that the more restrictive of the following reactivity conditions is met:

a. Either Keff of 0.95 or less, or
b. A boron concentration of greater than or equal to 2050 ppm.

WATERFORD 3 COLR 3/4 9-1 CYCLE 23 REVISION 0

III. METHODOLOGIES The analytical methods used to determine the core operating limits listed above are those previously reviewed and approved by the NRC in:

1. Qualification of the PHOENIX-P/ANC Nuclear Design System for Pressurized Water Reactor Cores, WCAP-11596-P-A, June 1988; ANC: A Westinghouse Advanced Nodal Computer Code, WCAP-10965-P-A, September 1986; and ANC: A Westinghouse Advanced Nodal Computer Code: Enhancements to ANC Rod Power Recovery, WCAP-10965-P-A Addendum 1, April 1989. (Methodology for Specifications 3.1.1.1 and 3.1.1.2 for Shutdown Margins, 3.1.1.3 for MTC, 3.1.3.6 for Regulating and Group P CEA Insertion Limits, 3.1.2.9 Boron Dilution (Calculation of CBC and IBW),

and 3.9.1 Boron Concentration).

2. Technical Description Manual for the CENTS Code, WCAP-15996-P-A, Revision 1, March 2005. (Methodology for Specification 3.1.1.1 and 3.1.1.2 for Shutdown Margins, 3.1.1.3 for MTC, 3.1.3.1 for Movable Control Assemblies - CEA Position, 3.1.3.6 for Regulating and Group P CEA Insertion Limits, and 3.2.4.b for DNBR Margin)
3. Qualification of the Two-Dimensional Transport Code PARAGON, WCAP-16045-P-A, August 2004. (Methodology for Specifications 3.1.1.1 and 3.1.1.2 for Shutdown Margins, 3.1.1.3 for MTC, 3.1.3.6 for Regulating and Group P CEA Insertion Limits, 3.1.2.9 Boron Dilution (Calculation of CBC & IBW),

3.2.4.b for DNBR Margin and 3.9.1 Boron Concentration).

WATERFORD 3 Page 17 CYCLE 23 REVISION 0

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