ML20233A510
| ML20233A510 | |
| Person / Time | |
|---|---|
| Issue date: | 08/20/2020 |
| From: | Joseph Sebrosky NRC/NRR/DANU |
| To: | Afzali A Southern Nuclear Operating Co |
| References | |
| Download: ML20233A510 (4) | |
Text
From:
Sebrosky, Joseph Sent:
Thursday, August 20, 2020 9:01 AM To:
Afzali, Amir Cc:
steve.nesbit@lmnt-consulting.com; francis Akstulewicz; Cyril Draffin; AUSTGEN, Kati; mrn@nei.org; 'Tom King'; Thomas Hicks; Wayne L. Moe; Jim C. Kinsey Jr; Reckley, William; Oesterle, Eric; Uribe, Juan; Khan, Maryam; Van Wert, Christopher; Segala, John
Subject:
NRC Staff Feedback on Industry-Developed Fundamental Safety Function Mapping Report To: Amir Afzali Southern Company Services Licensing and Policy Director - Next Generation Reactors Mr. Afzali, The purpose of this email is to provide you the Nuclear Regulatory Commission (NRC) staffs feedback on the Industry-developed report titled, Mapping Regulatory Requirements to Fundamental Safety Functions. The development of the report was discussed during the July 30, 2020, technology inclusive content of application project public meeting and the report is available in the NRCs Agencywide Documents Access and Management System (ADAMS) at Accession No. ML20219A650.
The staff generally agrees that those NRC regulations that define technical requirements can be mapped or correlated to one or more of the fundamental safety functions as defined in the report. The staff is electing to not offer specific feedback on the results shown for various regulations in Table 1, Results of Mapping Regulations to Fundamental Safety Functions, or the assessment of the General Design Criteria and related safety classification of structures, systems, and components (SSCs) in Section 5.0, Binning Principal Design Criteria to What, When, How, and How Well Categories. We are therefore not in a position to endorse those parts of the report and would caution against using the specific evaluations for any purpose other than as a high-level exercise supporting the report. However, the overall conclusions align with the staffs expectations that the NRCs existing regulations for light-water reactors ensure that the fundamental safety functions are fulfilled. As described in the report, the regulations provide that assurance by defining various high-level performance requirements as well as prescriptive requirements for some SSCs and related programmatic controls. The staff is comfortable with an approach based on developing an affirmative safety case based on the fundamental safety functions and other elements of Revision 1 of NEI 18-04, Risk-Informed Performance-Based Guidance for Non-Light Water Reactor Licensing Basis Development.
Please let me know if you have any questions regarding the NRC staffs feedback on the subject report.
Sincerely, Joe Sebrosky Senior Project Manager Advanced Reactor Policy Branch Office of Nuclear Reactor Regulation 301-415-1132
Hearing Identifier:
NRR_DRMA Email Number:
739 Mail Envelope Properties (DM6PR09MB512557C16EBC683ACBEC1B02F85A0)
Subject:
NRC Staff Feedback on Industry-Developed Fundamental Safety Function Mapping Report Sent Date:
8/20/2020 9:01:22 AM Received Date:
8/20/2020 9:01:22 AM From:
Sebrosky, Joseph Created By:
Joseph.Sebrosky@nrc.gov Recipients:
"steve.nesbit@lmnt-consulting.com" <steve.nesbit@lmnt-consulting.com>
Tracking Status: None "francis Akstulewicz" <frank.atozreactorconsulting@gmail.com>
Tracking Status: None "Cyril Draffin" <cyril.draffin@usnic.org>
Tracking Status: None "AUSTGEN, Kati" <kra@nei.org>
Tracking Status: None "mrn@nei.org" <mrn@nei.org>
Tracking Status: None
"'Tom King'" <thomasking2993@gmail.com>
Tracking Status: None "Thomas Hicks" <hickste@earthlink.net>
Tracking Status: None "Wayne L. Moe" <wayne.moe@inl.gov>
Tracking Status: None "Jim C. Kinsey Jr" <jim.kinsey@inl.gov>
Tracking Status: None "Reckley, William" <William.Reckley@nrc.gov>
Tracking Status: None "Oesterle, Eric" <Eric.Oesterle@nrc.gov>
Tracking Status: None "Uribe, Juan" <Juan.Uribe@nrc.gov>
Tracking Status: None "Khan, Maryam" <Maryam.Khan@nrc.gov>
Tracking Status: None "Van Wert, Christopher" <Christopher.VanWert@nrc.gov>
Tracking Status: None "Segala, John" <John.Segala@nrc.gov>
Tracking Status: None "Afzali, Amir" <AAFZALI@southernco.com>
Tracking Status: None Post Office:
DM6PR09MB5125.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 2341 8/20/2020 9:01:22 AM Options Priority:
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