ML21243A556
| ML21243A556 | |
| Person / Time | |
|---|---|
| Site: | 05200049 |
| Issue date: | 09/01/2021 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Mazza, Jan | |
| References | |
| Download: ML21243A556 (8) | |
Text
Public Meeting to Discuss Information Requests for Oklo, Inc. Maximum Credible Accident Methodology and Performance-Based Licensing Methodology Topical Reports September 1, 2021
Meeting Agenda Time Topic Speaker 3:00 - 3:10 pm Introductions NRC/Oklo 3:10 - 3:45 pm Technical Discussion Oklo/NRC 3:45 - 3:50 pm Opportunity for Public NRC/Public Questions/Comments 3:50 - 4:05 pm Break ALL 4:05 - 4:40 pm Technical Discussion Oklo/NRC 4:40 - 4:50 pm Opportunity for Public NRC/Public Questions/Comments 4:50 - 5:00 pm Wrap up and Adjourn ALL 2
Maximum Credible Accident (MCA)
Methodology: Overview
- Oklo-2021-R19-NP, Rev. 2 (ML21184A002)
- Additional Information Needed (ML21201A010):
I. Regulatory Evaluation (What rules does the methodology address?)
II. Steps needed to execute a structured, systematic approach III. Accounting for uncertainty (new/novel features)
IV. Necessary conditions and interfaces to implement the methodology V. Description of PRA 3
MCA: Necessary Conditions and Interfaces
- What are the conditions and interfaces necessary to implement the MCA methodology?
- Team: What necessary knowledge, skills, and abilities are needed to perform a thorough identification of initiating events, hazards, and accident sequences (collectively referred to as hazards)?
- Information Needs: What design information does the team need to perform a thorough hazard identification assessment?
- Documentation: How is the hazard identification assessment documented for future reference?
4
Performance-Based Licensing Methodology (PBLM) Topical Report (TR): Overview
- Oklo-2021-R20-NP, Rev. 0 (ML21187A001)
- Additional Information Needed (ML21201A104):
I. A regulatory evaluation explaining how the methodology satisfies current regulatory requirements II. Any necessary exemptions from regulatory requirements III. Design, analysis, operation, and maintenance of SSCs 5
PBLM TR: I. Regulatory Evaluation
- The TR does not address:
I.A Provisions under Title 10 of the Code of Federal Regulations (10 CFR) 50.43(e)
I.B The regulatory requirement under 10 CFR 52.79(a)(2)(ii)
I.C The regulatory requirement under 10 CFR 50.34(f)(3)
I.D The TR discusses the use of dose as the single acceptance criterion, which only addresses item (3) of the 10 CFR 50.2 definition of safety-related SSCs 6
PBLM TR: II. Exemptions
- The PBLM TR states that the approach complies with requirements in 10 CFR and does not identify or discuss exemptions.
- It appears to the NRC staff that exemptions from regulatory requirements may be needed to implement the methodology.
- See previous slide for possible examples 7
PBLM TR: III. Design, analysis, operation, and maintenance of SSCs III.A Margin in the design and analysis III.B Design and analysis provisions to address long-term operations III.C Provisions to ensure qualification of SSCs III.D Design, analysis, fabrication, and construction provisions III.E Provisions to ensure reliability and capability of SSCs throughout their lifecycle 8