ML102350232

Extended Power Uprate (EPU) NRC Public Meeting

ML102350232
Person / Time
Site:	Saint Lucie, Turkey Point
Issue date:	08/18/2010
From:	Florida Power & Light Co
To:	Office of Nuclear Reactor Regulation
Orf, T J, NRR/DORL/301-415-2788
References
Download: ML102350232 (25)

Text

St. Lucie and Turkey Point Extended Power Uprate (EPU)

NRC Public Meeting White Flint, Maryland August 18, 2010

2

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

3

• St. Lucie and Turkey Point EPUs are immense projects offering significant benefit to our customers

• Staffs letter of August 13, 2010 provided insights on information gaps for St. Lucie Unit 1 EPU LAR

• Seek to better understand staff perspective and develop a plan going forward for the FPL EPUs and spent fuel criticality licensing basis updates

• Encourage open and active dialog between FPL and staff to gain the most benefit from the meeting Opening

4

• Discuss NRC staff feedback on St. Lucie Unit 1 EPU LAR

- CEA Bank Withdrawal Event Analysis

- Station Blackout DC Coping Period Analysis

- Spent Fuel Pool Criticality Analysis

• Discuss content and approach for re-submittal of St.

Lucie Unit 1 EPU LAR

• Discuss content for Turkey Point EPU LAR for spent fuel criticality

• Discuss content for St. Lucie Unit 2 EPU LAR for spent fuel criticality Purpose of Meeting

5 FPL Participants TITLE NAME Vice President, Nuclear Power Uprate Terry Jones Director EPU Licensing & Regulatory Interface Liz Abbott Director of Licensing Larry Nicholson Director of Nuclear Fuels Claude Villard Nuclear Fuel Engineering Manager Jay Kabadi Nuclear Fuel Engineering Manager Carl OFarrill Nuclear Fuel Supervisor Emilio Fuentes Turkey Point EPU LAR Manager Steve Franzone St. Lucie EPU LAR Manager Chris Wasik Areva Telecon Westinghouse Ed Mercier, Tracy Bishop Holtec Stephan Anton, Jay Leff

6

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

7 St. Lucie Unit 1 CEA Withdrawal Event

• Plan to revise the CEAW licensing report section to cover a spectrum of power level cases

- Discuss content level of detail

- Additional sensitivities for limiting case

- Additional details of analysis

8

• Analysis Assumptions, Inputs and Methodology

- Time in life (BOC and EOC conditions)

- Reactivity parameters based on representative EPU cycle with added conservatism to cover cycle by cycle variations Checked on a cycle specific basis including transition cycles

- Power levels of 25%, 50%, 75% and 100% for RCS Pressure; Additional cases with 5% variation around the limiting case, if different than 100% power case

- For DNBR, power levels of 25% and 75% cases. 50% case will be run if either of the lower power cases becomes limiting

- Methodology used will be NRC approved Topicals, consistent with that used for other non-LOCA EPU analyses

• Results

- RCS pressure and pressurizer level as a function of power

- DNBR and fuel centerline temperature results for all power levels analyzed

- Figures of key system parameters (e.g. power level, RCS pressure, pressurizer level, etc.) for the limiting cases

• Discussion St. Lucie Unit 1 CEA Withdrawal Event

9

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

10

• Background

- Licensed as Alternate AC (AAC) plant hour total event duration Minute DC Coping period

• EPU LAR included 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> DC Coping analysis St. Lucie Unit 1 Station Blackout DC Coping

11

• Path Forward

- EPU LAR will address RS-001 Section 2.3.5

- Clarification Requested Discuss DC Coping scope and level of detail Discuss scope of EPU review for DC Coping St. Lucie Unit 1 Station Blackout DC Coping

12 EPU LAR Scope

- SBO Event Duration

- Battery Capacity

- Compressed Air Capacity

- RCS Inventory

- Loss of HVAC

- Containment Isolation

- Condensate Inventory

- AFW Flow

- Procedures & Training

- Modifications

- Quality Assurance

- Technical Specifications

- EDG Reliability

- License Renewal DC Coping Scope

- DC Coping Duration Change

- Battery Capacity

- Compressed Air Capacity

- RCS Inventory

- Loss of HVAC

- Containment Isolation

• DC coping period change is a subset of EPU LAR SBO scope St. Lucie Unit 1 Station Blackout DC Coping

13

• Question 5 on Condensate Inventory

- AOR evaluated for 4-hr Event

- Not impacted by DC Coping duration

- EPU LR section 2.5.4.5 Evaluation for Increased Decay Heat Bounds 1 turbine driven AFW pump operating for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />

• Question 6 on Basis for RCS Leak Rate

- FPL Letter July 30, 2010, Section 2.3

- Discuss elements of basis Westinghouse WCAP-16175-P, Rev.0 and associated NRC SE St. Lucie Unit 1 Station Blackout DC Coping

14

• Question 7 on NUMARC Revision

- RG 1.155 Endorses Rev. 0

- FPL Cited Rev. 1

- Options to Provide Basis or Cite Rev. 0

• Question 8 on RCS Level and Containment Isolation

- FPL Letter July 30, 2010, Appendix B

- Assumptions, Methods, Results

- Discuss Basis and Analysis Required

- Discuss Containment Isolation provisions St. Lucie Unit 1 Station Blackout DC Coping

15

• Question 9 on Loss of Control Room HVAC

- Clarify Operators would remain in the control room Discuss intent or impact

- Discuss level of detail for supporting analysis St. Lucie Unit 1 Station Blackout DC Coping

16

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

17 St. Lucie Unit 1 Criticality Analysis

• Assessment provided considered existing fuel configurations

- Addressed 2 most limiting actual configurations

- Provided margin for interim conditions

• Licensed analysis addressed 5 design storage configurations

• Conservative bounding interim analysis could be based on actual configurations

• Criticality Analysis

- Discuss options for re-submittal Elements for bounding sensitivity studies Attributes to consider Level of detail Other plant examples

18

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

19 Turkey Point Criticality Analysis

• Unit 3 SFP has been configured to implement with the storage configurations of Amendment 234 (Boraflex Remedy

• Unit 4 SFP re-configuration to implement with the storage configurations of Amendment 229 (Boraflex Remedy) is in progress and expect to complete by 9/30/2010

• Upon completion of re-configuration of both SFPs to implement with the Boraflex Remedy, implementation of Technical Specification Amendments 234 and 229 will be complete

• LAR 204, Spent Fuel Pool Criticality Analysis Taking credit for Boraflex, submitted 2/25/2010 will no longer be required

20

• LAR 207, Fuel Storage Criticality Analysis, submitted 8/5/2010

- Replaces Boraflex Remedy and new fuel storage licensing basis analysis for the entire pool

- Addresses following items:

Use of the HTC critical experiments in the benchmark

analysis, Updated statistical treatment of the bias and bias uncertainty in the benchmark analysis, Use of the 5% depletion uncertainty for all analyzed conditions, Use of bounding operational parameters for the depletion calculations and Other issues identified in previous NRC RAIs on SFP LARs known at time of analysis Turkey Point Criticality Analysis

21

• Future Plans

- LAR 207 configurations being evaluated for required fuel moves and additional metamic inserts Implementation of LAR 207 configurations appear feasible under 50.59 by using the most limiting of the Boraflex remedy and LAR 207 configurations Activities to be scheduled once spent fuel pool fuel and metamic insert arrangements defined

- EPU LAR planned for submittal early 9/2010 Discuss content options for EPU submittal Turkey Point Criticality Analysis

22

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

23

• FPL planning to perform new spent fuel criticality analysis for entire pool

- Analysis to address draft ISG

- Analysis would be included in EPU LAR

• Discuss Options for spent fuel criticality section content

- Enable one analysis / licensing effort

- Enable licensing spent fuel pool and EPU simultaneously St. Lucie Unit 2 Criticality Analysis

24

• Introduction

• St. Lucie Unit 1 CEA Withdrawal Event

• St. Lucie Unit 1 Station Blackout DC Coping

• St. Lucie Unit 1 Criticality Analysis

• Turkey Point Criticality Analysis

• St. Lucie Unit 2 Criticality Analysis

• Closing Summary Agenda

25 Closing Summary

• FPL appreciates Staff participation and interface

• Review action items

• Summary of path forward