Letter Sequence Meeting |
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EPID:L-2017-LLA-0211, Addition of New Tech Spec on RCS Boron Limits and Revisions to Tech Spec 3.3.1 to Address Rwfs (Approved, Closed) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
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MONTHYEARML17053B3932017-01-17017 January 2017
License Amendment Request for the Transition to Westinghouse Core Design and Safety Analyses
Project stage: Request
ML17054C2262017-01-17017 January 2017
License Amendment Request for the Transition to Westinghouse Core Design and Safety Analyses - WCAP-18083-NP, Rev 0, Westinghouse Revised Thermal Design Procedure Uncertainty Calculations
Project stage: Request
ML17054C2292017-01-17017 January 2017
License Amendment Request for the Transition to Westinghouse Core Design and Safety Analyses - Responses to NRC RAIs on August 2013 Methodology Transition LAR Submittal
Project stage: Response to RAI
ML17054C2272017-01-17017 January 2017
License Amendment Request for the Transition to Westinghouse Core Design and Safety Analyses - Alternative Source Term, Rev 1
Project stage: Request
ML17151A9972017-03-0909 March 2017
Wolf Creek Revision 30 to Updated Final Safety Analysis Report, Chapter 3.0, Design of Structures, Components, Equipment, and Systems
Project stage: Request
WO 17-0026, Errata for License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses2017-03-22022 March 2017
Errata for License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses
Project stage: Request
ML17088A3312017-03-22022 March 2017
Transmittal of the Kansas Water Pollution Control Permit and Authorization to Discharge Under the National Pollutant Discharge Elimination System
Project stage: Request
ML17100A2662017-04-18018 April 2017
Supplemental Information Needed for Acceptance of Requested Licensing Action Transition to Westinghouse Core Design and Safety Analyses
Project stage: Acceptance Review
ET 17-0011, Response to Supplemental Information Needed for Acceptance of Requested Licensing Action Transition to Westinghouse Core Design and Safety Analyses2017-05-0404 May 2017
Response to Supplemental Information Needed for Acceptance of Requested Licensing Action Transition to Westinghouse Core Design and Safety Analyses
Project stage: Request
ML17132A3632017-05-15015 May 2017
Acceptance of Requested Licensing Action License Amendment Request for the Transition to Westinghouse Core Design and Safety Analyses in Addition to Adopting of Alternative Source Term
Project stage: Acceptance Review
ML17136A3592017-05-22022 May 2017
Request for Withholding Information from Public Disclosure, 11/14/2016(CAW-16-4499), Affidavit Executed by James A. Gresham, Westinghouse Electric Company LLC Enclosure I of the Letter Dated 01/17/2017
Project stage: Withholding Request Acceptance
ML17137A2862017-05-22022 May 2017
Request for Withholding Information from Public Disclosure, 11/14/16 (CAW-16-4500) Affidavit Executed by James A. Gresham, Westinghouse Electric Company LLC for Enclosure VI to the Letter Dated 1/17/17
Project stage: Withholding Request Acceptance
ML17166A0382017-06-14014 June 2017
NRR E-mail Capture - Request for Additional Information - License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term
Project stage: RAI
ET 17-0016, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analyses2017-07-13013 July 2017
Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analyses
Project stage: Response to RAI
ML17265A0142017-09-21021 September 2017
NRR E-mail Capture - Request for Additional Information - License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses
Project stage: RAI
ML17291A7102017-10-17017 October 2017
NRR E-mail Capture - Request for Additional Information - License Amendment Request (LAR) for Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term
Project stage: RAI
ET 17-0024, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term2017-10-18018 October 2017
Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term
Project stage: Response to RAI
ML17297B7972017-10-31031 October 2017
Request for Withholding Information from Public Disclosure (CAC No. MF9307; EPID L 2017-LLA-0211)
Project stage: Withholding Request Acceptance
ET 17-0025, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term2017-11-14014 November 2017
Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term
Project stage: Response to RAI
ML17331A1782017-12-0404 December 2017
Request for Additional Information License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternate Source Term (CAC No. MF9307; EPID L-2017-LLA-0211)
Project stage: RAI
WO 18-0004, Response to Request for Additional Information Re License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of .2018-01-15015 January 2018
Response to Request for Additional Information Re License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of .
Project stage: Response to RAI
ET 18-0004, Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-01-29029 January 2018
Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Supplement
ML18066A0502018-03-0808 March 2018
Regulatory Audit Plan for March 19-21, 2018, in Support of the LAR for Transition to Westinghouse Core Design and Safety Analyses Including Alternative Source Term (CAC No. MF9307;EPID L-2017-LLA-0211)
Project stage: Approval
L-2018-077, Schedule for Re-Analysis of Turkey Point Licensing Basis Analyses Affected by PAD5 Implementation2018-03-27027 March 2018
Schedule for Re-Analysis of Turkey Point Licensing Basis Analyses Affected by PAD5 Implementation
Project stage: Request
ML18114A1162018-04-19019 April 2018
SAP-18-34, Supplemental 30 Day Responses to NRC Request for Additional Information Regarding Wolf Creek Generating Station Transition to Westinghouse Safety Analysis and Alternate Source Term Methodologies
Project stage: Supplement
ET 18-0012, Operating Corp., Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-04-19019 April 2018
Operating Corp., Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Supplement
ML18115A3522018-05-0303 May 2018
Request for Withholding Information from Public Disclosure, Affidavit Dated April 16, 2018 Supplemental 30 Day Responses to NRC RAI WCGS Transition to Westinghouse Safety AST Methodolgies
Project stage: RAI
ML18107A7562018-05-0303 May 2018
Regulatory Audit Summary License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term (CAC MF9307; EPID L-2017-LLA-0211)
Project stage: Other
ET 18-0018, Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-06-19019 June 2018
Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Supplement
ML18183A5832018-07-23023 July 2018
Request for Withholding Information from Public Disclosure - 6/18/18 Affidavit Executed by Edmond J. Mercier, Westinghouse Electric Company Adoption of AST Amendment Request(Cac No. MF9307; EPID L-2017-LLA-0211)
Project stage: Withholding Request Acceptance
WO 18-0034, Operating Corp., Additional Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-08-0909 August 2018
Operating Corp., Additional Supplement to License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Supplement
ML18270A0942018-10-0404 October 2018
Request for Additional Information License Amendment Request for Transition to Westinghouse Methodology for Selected Accident and Transient Analyses
Project stage: RAI
05000482/LER-2018-001, Inappropriate Use of Blind Flange for Containment Isolation Valve Results in Condition Prohibited by Technical Specifications2018-10-0404 October 2018
Inappropriate Use of Blind Flange for Containment Isolation Valve Results in Condition Prohibited by Technical Specifications
Project stage: Request
ML18332A1772018-10-25025 October 2018
Email Slides for 10/30 Public Meeting
Project stage: Request
ML18313A2252018-10-25025 October 2018
Westinghouse Affidavit CAW-18-4828 - Application for Withholding Proprietary Information from Public Disclosure
Project stage: Request
ML18299A0492018-10-30030 October 2018
Accident Analyses Methodology Transition LAR Public Meeting
Project stage: Meeting
ML18304A1052018-11-0505 November 2018
Request for Additional Information License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses and Alternative Source Term (CAC No. MF9307; EPID L-2017-LLA-0211)
Project stage: RAI
WO 18-0047, Timeline for Response to RAI for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-11-15015 November 2018
Timeline for Response to RAI for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Response to RAI
WO 18-0044, Clean Revised Technical Specification Pages for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-11-15015 November 2018
Clean Revised Technical Specification Pages for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Request
ML18313A2542018-11-16016 November 2018
Summary of Public Meeting with Wolf Creek Nuclear Operating Corporation Regarding License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses for Wolf Creek Generating Station
Project stage: Meeting
ML18327A1342018-11-30030 November 2018
Request for Withholding Information from Public Disclosure, Affidavit Dated October 25, 2018, Executed by Mr. Paul A. Russ, Westinghouse (CAC No. MF9307; EPID L-2017-LLA-0211)
Project stage: Withholding Request Acceptance
ET 18-0035, Operating Corp., Supplemental Response to RAI for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term2018-12-0606 December 2018
Operating Corp., Supplemental Response to RAI for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption of Alternative Source Term
Project stage: Supplement
ML18360A0342018-12-21021 December 2018
NRR E-mail Capture - Review Schedule for Wolf Creek Generating Station License Amend Request (LAR) for Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term
Project stage: Approval
ET 19-0008, Response to Request for Additional Information Related to Thermal Conductivity Degradation for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption2019-03-0505 March 2019
Response to Request for Additional Information Related to Thermal Conductivity Degradation for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption
Project stage: Response to RAI
ML19070A1392019-03-0505 March 2019
Response to Request for Additional Information Related to Thermal Conductivity Degradation for License Amendment Request to Revise Technical Specifications to Transition to Westinghouse Core Design and Safety Analysis Including Adoption.
Project stage: Request
ML19070A1162019-03-0505 March 2019
Westinghouse, Responses to NRC Request for Additional Information Documented in ADAMS Accession No. ML 18270A094 on the Core Design and Safety Analyses Methodology Transition Program
Project stage: Response to RAI
ML19099A1772019-04-16016 April 2019
Request for Withholding Information from Public Disclosure, 2/13/19 Affidavit Executed by Stephen Rigby, Westinghouse Electric Company LLC RAI Response Related to Adoption of Alternative Source Term (CAC MF9307; EPID L-2017-LLA-0211)
Project stage: RAI
ML19122A2552019-05-0202 May 2019
Closed Predecisional Enforcement Conference with an Employee of Wolf Creek Nuclear Operating Corporation
Project stage: Request
ML19100A1222019-05-31031 May 2019
Issuance of Amendment No. 221 License Amendment Request for Transition to Westinghouse Core Design and Safety Analyses Including Adoption of Alternative Source Term
Project stage: Approval
2018-10-30
[Table View] |
Text
Accident Analyses Methodology Transition LAR Public Meeting October 30, 2018 1
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
Opening Remarks
Purpose:
- Timely Resolution of RAI documented within ADAMS Accession No. ML18270A094 Agenda:
- Introduction
- License Amendment Request (LAR) Description
- Submittal Timeline
- Thermal Conductivity Degradation Methodology Changes
- LAR Completion
- Conclusion 2
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
Introduction Wolf Creek and Westinghouse are focused and committed to complete the Transition program Recent requests for additional information puts the LAR schedule at significant risk Discussion today is to agree upon approach for timely implementation of the transition to Westinghouse methods
- Providing potential options for consideration
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
License Amendment Request (LAR) Description
The transition to Westinghouse core design and safety analyses methodologies is being performed to utilize current methodologies and provide more consistent alignment with the Westinghouse fleet of plants
Wolf Creek safety analyses methodologies and analyses of record are roughly 20 years old and this transition will bring Wolf Creek up to the latest industry best practices as well as closing all open issues
Furthermore, Wolf Creek was facing depleted core design and safety analysis engineering experience and capability within Nuclear Engineering in addition to the ongoing difficulties associated with hiring, retaining, and training personnel to update and maintain the safety analysis Transition to updated methodologies is paramount for Wolf Creek long term successful operation
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
Submittal Timeline
August 2016 - Transition pre-submittal meeting with the NRC
January 2017 - Transition LAR re-submitted to the NRC for review
May 2017 - Transition LAR accepted for review
June - December 2017 - Multiple RAIs received
January 2018 - P-A version of PAD5 Topical Report issued
April 2018 - NRC audit to facilitate RAI response
September 2018 - Draft RAIs related to TCDs received
October 2018 - Final TCD RAIs received
May 2019 - Target NRC approval of the Transition program Collaboration amongst NRC, WCNOC, and Westinghouse is needed to support desired approval timeline
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
Thermal Conductivity Degradation Methodology Changes
NRC requested additional information on two safety analysis events (Rod Ejection and Steamline break) regarding appropriately including the effects of thermal conductivity degradation (TCD)
While the transition LAR referenced the TCD safety evaluation (LTR-NRC-12-18), the NRC has requested additional information to comply with GDC27 and GDC28
To support the RAI response for a timely approval of the transition LAR, WCNOC recommends a descriptive evaluation and quantitative examples to address thermal conductivity degradation
- Originally submitted transition analyses supported by LTR-NRC-12-18 conclusions will form the licensing basis
- Results will demonstrate that the acceptance criteria for the Rod Ejection and Steamline break events are met when accounting for TCD Rationale behind proposed RAI response requires a proprietary discussion
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
7 Closed Portion
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
8 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
This slide is left intentionally blank
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
9 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
Technical Interfaces for PAD5 Implementation a,c
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
10 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
Thermal Conductivity Degradation Methodology Changes Explicitly accounting for TCD in the licensing basis within the RAI referenced analyses requires the following:
- Rod Ejection and Steamline break analyses provide part of the basis for fuel centerline melt Technical Specification (TS) Safety Limit (SL) 2.1.1.2 Explicitly accounting for TCD in the Westinghouse methodology can only be accomplished with PAD5 Use of PAD5 in the re-analyses of the events described in the RAIs may incur relaxation of the current TS SL 2.1.1.2 value If this is the case, all other not-LOCA analyses that support the basis of TS SL 2.1.1.2 would also require re-analysis WCAP-17642-P-A provides a basis for crediting a relaxed fuel centerline temperature limit
- Due to the timing of the question and consistent with the Westinghouse-NRC January 2018 (LTR-NRC-18-7) discussion, a full Not-LOCA PAD5 transition cannot be completed within the current license amendment review timeframe
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
11 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
Explicitly accounting for TCD in the licensing basis within the RAI referenced analyses requires the following (cont.):
- Performance of limited TS SL 2.1.1.2 analyses with PAD5 is not a viable option Per Westinghouse NRC letter LTR-NRC-16-57, PAD5 implementation [
]a,c Thermal Conductivity Degradation Methodology Changes
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
12 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
LAR Completion With these considerations, the following is recommended to complete the Transition LAR on the desired schedule
- Descriptive evaluation and quantitative examples to address thermal conductivity degradation Evaluation and example analysis results will demonstrate that the acceptance criteria for the Rod Ejection and Steamline break events are met when accounting for TCD
- Supports a transition implementation date coincident with the Fall 2019 Refuel Expect to meet the 2 year review goal
- As discussed during the RAI clarification call, when addressing the rod ejection analysis, the current calorie per gram limit will be retained
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
13 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
LAR Completion Alternatively, the following allows for implementation of TS SL 2.1.1.2 limit change as part of the Transition LAR but outside of the desired schedule
- Results of the Rod Ejection and Steamline break events will be provided in the RAI responses
- All analyses that support the fuel melt TS limit will be revised to explicitly account for TCD
- Full Not-LOCA PAD5 implementation will be introduced into the licensing basis via 50.59
Due to reload schedule requirements associated with cycle-specific planning and consistent with Turkey Point (ML18086A154, March 2018), implementation of PAD5 Not-LOCA will occur upon completion of required analysis effort on a forward fit basis by no later than the next reload campaign following approval of the Transition program LAR
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
14 Westinghouse Non-Proprietary Class 3
© 2018 Westinghouse Electric Company LLC. All Rights Reserved.
Conclusion The transition to Westinghouse core design and safety analyses methodologies is being performed to utilize current methodologies and provide more consistent alignment with the Westinghouse fleet of plants TS SL 2.1.1.2 introduces complexities in responding to the TCD RAIs Concurrence on RAI response approach is required to ensure timely method transition approval WCNOC is committed to transitioning to Westinghouse methods
- This record was final approved on 10/25/2018 6:03:10 PM. (This statement was added by the PRIME system upon its validation)
