W3F1-2020-0064, Core Operating Limits Report (COLR) - Cycle 24, Revision 1

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Core Operating Limits Report (COLR) - Cycle 24, Revision 1
ML20304A493
Person / Time
Site: Waterford Entergy icon.png
Issue date: 10/27/2020
From: Bradley J
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
W3F1-2020-0064
Download: ML20304A493 (19)
v • d • e


Text

Entergy Operations, Inc.

17265 River Road Killona, LA 70057-3093 Tel 504-464-3786 Paul Wood Manager, Regulatory Assurance, Waterford 3 W3F1-2020-0064 October 27, 2020 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

Subject:

Core Operating Limits Report (COLR) - Cycle 24, Revision 1 (Re-Design for Modes 3, 4, 5 and 6 only)

Waterford Steam Electric Station, Unit 3 Docket No. 50-382 Renewed Facility Operating License No. NPF-38 Waterford 3 Technical Specification 6.9.1.11.3 requires submittal of the Core Operating Limits Report for each reload cycle including any mid-cycle revisions or supplements thereto.

Attached is Waterford 3 Core Operating Limits Report for reload Cycle 24 Revision 1.

(Change for Modes 3, 4, 5 and 6 only)

If you have any questions concerning this submittal, please contact Paul Wood, Regulatory Assurance Manager, at (504) 464-3786 There are no regulatory commitments contained in this correspondence.

Respectfully, Jeffrey K. Digitally signed by Jeffrey K.

Bradley Bradley Date: 2020.10.27 17:07:39

-05'00' Jeffrey K. Bradley, Acting Regulatory Assurance Manager PW/llb

Attachment:

Waterford 3 Core Operating Limits Report Cycle 24, Revision 1 NRC Region IV Regional Administrator NRC Senior Resident Inspector - Waterford Steam Electric Station, Unit 3 NRR Project Manager

Attachment to W3F1-2020-0064 Waterford 3 Core Operating Limits Report Cycle 24 Revision 1 (Attachment contains 17 pages)

ENTERGY OPERATIONS WATERFORD 3 CORE OPERATING LIMITS REPORT FOR CYCLE 24 MODES 3, 4, 5, AND 6 ONLY REVISION 1

WATERFORD 3 CORE OPERATING LIMITS REPORT CYCLE 24 MODES 3, 4, 5, AND 6 ONLY REVISION 1 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 AFFECTED TECHNICAL SPECIFICATIONS 6 3.1.1.1 Shutdown Margin - Any CEA Withdrawn COLR 3/4 1-1 3.1.1.2 Shutdown Margin - All CEAs Fully Inserted COLR 3/4 1-3 3.1.2.9 Boron Dilution COLR 3/4 1-15 3.9.1 Boron Concentration COLR 3/4 9-1 III.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 1 Pages 1-6, COLR 3/4 1-1, 1-3, 1-15, 9-1, and Page 17 WATERFORD 3 Page 2 CYCLE 24 REVISION 1

LIST OF FIGURES PAGE COLR Figure 1 Shutdown Margin Versus Cold Leg Temperature COLR 3/4 1-3A LIST OF EFFECTIVE FIGURE PAGES Revision 1 COLR 3/4 1-3A WATERFORD 3 Page 3 CYCLE 24 REVISION 1

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 1 COLR 3/4 1-15A through COLR 3/4 1-15E WATERFORD 3 Page 4 CYCLE 24 REVISION 1

WATERFORD 3 CORE OPERATING LIMITS REPORT CYCLE 24 MODES 3, 4, 5, AND 6 ONLY REVISION 1 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 24. This revision of the COLR is applicable for Modes 3, 4, 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 2. The core operating limits have been developed using the NRC approved methodologies specified in Section III. This is Revision 1 of the Cycle 24 COLR.

There were no major changes between the Cycle 24, Revision 1, COLR and the Cycle 24, Revision 0, COLR. This revision of the Cycle 24 COLR is issued for the Cycle 24 re-design. It is applicable to operations in Modes 3, 4, 5, and 6 only.

There are no changes to the values for the required Shutdown Margin in Modes 3, 4, and 5 from the previous revision to the Cycle 24 COLR. There are no changes to the values for the required RCS boron concentration monitoring frequencies and Charging Pump operation limits in Modes 3, 4, 5, and 6 from the previous revision to the Cycle 24 COLR. There are no changes to the values for the required RCS boron concentration in Mode 6 from the previous revision to the Cycle 24 COLR.

WATERFORD 3 Page 5 CYCLE 24 REVISION 1

II. AFFECTED TECHNICAL SPECIFICATIONS WATERFORD 3 Page 6 CYCLE 24 REVISION 1

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 24 REVISION 1

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 24 REVISION 1

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 24 REVISION 1

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 24 REVISION 1

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 3 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-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 **

4 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Operation not allowed **

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 24 REVISION 1

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 3 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-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**

4 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-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**

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 24 REVISION 1

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 3 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 3.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 1.25 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 /> 4 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-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**

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 24 REVISION 1

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 3 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 4.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 2.0 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 /> 4 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 2.25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> 0.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> Operation not allowed**

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 24 REVISION 1

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 3 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 5.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> 2.0 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 /> 4 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 2.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> 1.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> Operation not allowed**

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 24 REVISION 1

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 24 REVISION 1

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 24 REVISION 1

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