Letter Sequence Acceptance Review |
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EPID:L-2017-LLA-0350, NEI 17-02, Revision 0, Tornado Missile Risk Evaluator (TMRE) Industry Guidance Document (Approved, Closed) |
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MONTHYEARML17181A3072017-06-23023 June 2017
NEI 17-02, Revision 0, Tornado Missile Risk Evaluator (TMRE) Industry Guidance Document
Project stage: Request
ML17235B1482017-08-23023 August 2017
U.S. Nuclear Regulatory Commission - Tornado Missile Risk Evaluator (TMRE) Methodology Topics and Methodology Feedback
Project stage: Request
ML17268A0362017-09-30030 September 2017
NEI 17-02, Revision 1, Tornado Missile Risk Evaluator (TMRE) Industry Guidance Document
Project stage: Request
ML17311A9942017-11-0808 November 2017
NEI Slides for November 8, 2017, Teleconference Concerning Tornado Missile Risk Evaluator Pilot Submittals
Project stage: Meeting
ML17319A8472017-11-21021 November 2017
Acceptance Review Letter, License Amendment Request to Revise Updated Final Safety Analysis Report to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis
Project stage: Acceptance Review
ML17340A0612017-12-0808 December 2017
11/8/17 Summary of Teleconference with Entergy Operations, Inc., Tornado Missile Risk Evaluator with Applicability to Submittals from Duke Energy and Southern Nuclear Operating Co, Inc.
Project stage: Meeting
ML18017A9382018-01-18018 January 2018
NEI 17-02 Tornado Missile Risk Evaluator (TMRE) - Resolution of NRC Staff Comments - January 18, 2018
Project stage: Request
ML18054A0422018-03-16016 March 2018
Audit Plan (Start Date No Later than 4/15/18) Related to License Amendment Request to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis
Project stage: Other
ML18114A2302018-05-0303 May 2018
Updated Audit Questions License Amendment Request for Approval to Utilize the Tornado Missile Risk Evaluator to Analyze Tornado Missile Protection Non-Conformances
Project stage: Other
ML18136A4972018-06-0101 June 2018
Request for Additional Information, License Amendment Request to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis
Project stage: RAI
ML18138A4192018-06-18018 June 2018
Regulatory Audit Report - Phase 1 Audit Conducted 4/4 to 4/6/18; Phase 2 Audit Conducted 5/15/18 License Amendment Request to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis
Project stage: Other
ML18094A2632018-08-17017 August 2018
Summary of 01/18/2018, Public Meeting with Nuclear Energy Institute, Duke Energy, Southern Nuclear Operating Co., Entergy Operations, Inc. to Discuss Development of Tornado Missile Risk Evaluator Methodology
Project stage: Meeting
ML18215A4242018-08-21021 August 2018
Summary of Public Meeting with Nuclear Energy Institute and Southern Nuclear Operating Company to Discuss Vogtle License Amendment Request to Implement NEI 17-02, Revision 1, Tornado Missile Risk Evaluator Methodology
Project stage: Meeting
ML18236A4452018-08-30030 August 2018
Review of Response to RAI License Amendment Request for Approval to Utilize the Tornado Missile Risk Evaluator to Analyze Tornado Missile Protection Non-Conformances
Project stage: RAI
ML18304A3942019-01-11011 January 2019
Issuance of Amendment Nos. 198 and 181, Revise Updated Final Safety Analysis Report to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis
Project stage: Approval
ML19120A1342019-05-0606 May 2019
3/15/19 Summary of Public Meeting with Nuclear Entergy Institute, Duke Energy, and Southern Nuclear Operating Company Post-Pilot Implementation of Tornado Missile Risk Evaluator Methodology at Vogtle, Units 1 and 2 and Shearon Harris, Unit
Project stage: Meeting
2018-03-16
[Table View] |
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Category:Acceptance Review Letter
MONTHYEARML23150A0802023-05-30030 May 2023
Acceptance Review - Vogtle Units 1 and 2 - Proposed LAR and Relief Request to Revise TS 3.4.14.1 and IST ALT-VR-02 (EPIDs L-2023-LLA-0061 and L-2023-LLR-0023)
ML20290A2842022-08-0303 August 2022
Licensee Letter Subject: Finding That All Acceptance Criteria Are Met for Vogtle Electric Generating Plant, Unit 3 Combined License
ML21095A0872021-04-19019 April 2021
Non-Acceptance of Requested Licensing Action License Amendment Request to Revise Technical Specification Surveillance Requirement 3.3.5.2 Allowable Values
ML20258A1462020-09-0909 September 2020
E-Mail - Acceptance Review - Vogtle GSI-191 Exemption
ML19319A0112019-09-11011 September 2019
Acceptance Letter - Vogtle Electric Generating Plant Units 3 and 4 LAR 19-014, Tornado Missile Protection for Main Steam Vent Stacks and Wall
ML19220A9542019-08-0808 August 2019
LAR 19-013, Pressurizer Surge Line Stratification Evaluation
ML19182A0142019-07-0303 July 2019
Acceptance Letter Vogtle 3 and 4 LAR 19-012
ML19135A1132019-05-15015 May 2019
Acceptance Letter for Vogtle Units 3 and 4, LAR 19-006, Crediting ADS Blowdown First Three Plant Test
ML18156A4432018-06-0707 June 2018
Acceptance Letter for LAR 18-011 ESF Safeguard Actuation TS Applicability Changes
ML18082B0942018-03-27027 March 2018
Acceptance Letter (LAR-17-043) Containment Pressure Analysis
ML18052B0642018-02-26026 February 2018
Acceptance Letter for LAR 18-003
ML18025A7862018-01-31031 January 2018
Acceptance Letter for LAR 17-042
ML18019A3622018-01-25025 January 2018
(LAR 17-037) Acceptance Letter
ML18022B1142018-01-22022 January 2018
Acceptance Letter (LAR 17-044)
ML17319A8472017-11-21021 November 2017
Acceptance Review Letter, License Amendment Request to Revise Updated Final Safety Analysis Report to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis
ML17166A4332017-06-26026 June 2017
Supplemental Information Needed for Acceptance of Systematic Risk-Informed Assessment of Debris Technical Report
ML17033A0232017-02-14014 February 2017
Request for One-Time Exception to Nuclear Reactor Regulation Office Instructions LIC-109, LIC-101, and LIC-500 Acceptance Review Criteria
ML16245A9142016-09-0101 September 2016
Acceptance Review - NSCW Transfer Pump Vogtle Unit 2
ML16224A1432016-08-23023 August 2016
Acceptance Review Regarding Reactor Vessel Threads in Flange Examination
ML16204A0422016-07-26026 July 2016
Acceptance Letter, Unacceptable, with Opportunity to Supplement
ML13086A0852013-04-26026 April 2013
Acceptance Review Results Regarding Implementation of Risk-Informed Technical Specifications
ML12115A0742012-04-20020 April 2012
NRR E-mail Capture - Acceptance Review for VEGP VEGP-ISI-ALT-07 ASME Code Case N-729-1, NL-12-0663
ML11102A0162011-04-12012 April 2011
E-Mail Acceptance Review for TSTF-361-A RHR Lop Testing (TAC ME5853/ME5854)
ML1108800402011-03-28028 March 2011
Email Acceptance Review for License Application NL-11-0280 Steam Generator Water Level Hi-Hi Setpoint Change
ML1019302772010-07-19019 July 2010
Acceptance Review Regarding License Amendment Request for Technical Specification Table 3.3.1-1
ML1012000882010-04-30030 April 2010
Acceptance of Vogtle Relief Request (VEGP-ISI-ALT-03) Dated April 7, 2010
2023-05-30
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, O.C 20555-0001 November 21 , 2017 Mr. J. J. Hutto Regulatory Affairs Director Southern Nuclear Operating Company, Inc.
40 Inverness Center Parkway, Bin 038 Birmingham, AL 35201-1295
SUBJECT:
VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2 -ACCEPTANCE OF PILOT APPLICATION OF TORNADO MISSILE RISK EVALUATOR METHODOLOGY (EPID L-2017-LLA-0350) (NL-17-0609)
Dear Mr. Hutto:
By letter dated October 11, 2017 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML17284A348), Southern Nuclear Operating Company, Inc. (the licensee), submitted a pilot license amendment request for Vogtle Electric Generating Plant, Units 1 and 2. The proposed amendment request would pilot the Nuclear Energy Institute (NEI)
Technical Report NEI 17-02, Revision 1, Tornado Missile Risk Evaluator {TMRE) Industry Guidance Document," September 2017 (ADAMS Accession No. ML17268A036). The proposed amendment request screens systems, structures, and components, using risk values (assessment of external hazard frequencies, system responses, and mitigating actions) to determine whether physical protection from tornado-generated missiles is warranted. The methodology would only be applicable to discovered conditions where tornado missile protection should be but is not currently provided. Future modifications to the facility requiring tornado missile protection would not be evaluated using the TMRE methodology. The purpose of this letter is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staff's acceptance review of this proposed amendment request. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRG staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.
Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR), an amendment to the license (including the technical specifications) must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required.
This Section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.
The NRG staff has reviewed your application and concluded that it does provide technical information in sufficient detail to enable the NRG staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed amendment in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review as compared to the detailed technical review, there may be instances in which issues that impact the NRG staff's ability to complete the detailed technical review are identified despite completion of an adequate
J. Hutto acceptance review. If additional information is needed, you will be advised by separate correspondence.
The NRC staff did have a comment regarding the characterization of the compliance of the proposed change with current regulations. It is recognized that the submittal is risk-informed and outlines how the proposed change addresses the five principles of risk-informed decision making. As discussed in a public teleconference on November 8, 2017, the discussion in Section 4.1 of Enclosure 1 of the submittal indicates that the relaxation criteria is based on the risk metrics (Le., overall plant core damage frequency or large early release frequency) in Regulatory Guide (RG) 1.174, "An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis." The NRG staff notes that the probabilistic criteria (i.e., the probability of damage to unprotected safety-related features) in Section 3.5.1.4 of NUREG-0800, "Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition" (SRP), Revision 0, is not directly comparable to RG 1.174 acceptance guidelines. The description regarding continuing compliance with regulations needs to be enhanced by a more comprehensive discussion of the existing design bases and how it continues to meet the applicable regulations. Alternatively, the description could be enhanced to demonstrate that the relaxation, which is based on the concept that the frequency of damage to unprotected essential safety-related features, as permitted by SRP 3.5.1.4, remain applicable.
By letter dated July 3, 2017 (ADAMS Accession No. ML17125A106), the NRC staff approved a waiver of the fees in support of the NRC staff's review of the TMRE methodology and the amendment request related to this project. As there is an approved fee waiver, no estimate of resources will be provided. It should be noted that based on the information provided, the NRC staff expects to complete this review no later than October 2018. If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date, the reasons for the changes, will be communicated during the routine interactions with the assigned TMRE project manager.
The schedule is based on the NRC staff's initial review of the application and it could change, due to several factors including requests for additional information and unanticipated addition of scope to the review.
If you have any questions, please contact me at (301) 415-2315 or via e-mail at Eva.Brown@nrc.gov.
~ff,\
~RB Eva A. Brown, Senior Project Manager Special Projects and Process Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50-425 cc: Listserv
ML17319A847 OFFICE NRR/DORULSPB/PM NRR/DORULSPB/LAiT NRR/DORULSPB/LA NAME EBrown IBetts JBurkhardt DATE 11/20/17 11/17/17 11/20/17 NRR/DORULSPB/BC NRR/DORULSPB/PM OFFICE w/comments NAME DBroaddus EBrown (GEMiller for)
DATE 11/20/17 11/21/17
