ML21172A234
| ML21172A234 | |
| Person / Time | |
|---|---|
| Issue date: | 06/22/2021 |
| From: | Mike Franovich NRC/NRR/DRA |
| To: | |
| Pressley L | |
| References | |
| Download: ML21172A234 (11) | |
Text
Risk Informed Steering Committee (RISC) Meeting June 22, 2021 Michael X. Franovich, Director Division of Risk Assessment Office of Nuclear Reactor Regulation 1
AGENDA High Energy Arc Fault Update PRA Acceptability Update Expanded Integration FLEX Future RISC Focus Areas Fall Risk Forum Discussion 2
Aluminum Enhanced High Energy Arc Fault (Al HEAF) - Current Status Pre-generic issue (GI)-018 Achieving regulatory resolution is a priority Tangible progress on previously communicated resolution path (December 2, 2020, RISC; ML20336A228)
EPRI/NRC WG is close to completing major improvements to modeling of Al HEAF Evaluating the ability of electrical raceway fire barrier systems (ERFBS) to mitigate the impact from Al HEAF Developing the strategies for a risk-informed resolution Continued communication and outreach (e.g., April 6th public meeting) 3
Al HEAF - Considering External Stakeholder Feedback Operational experience (OpE)
Explicitly included in improved modeling Small sample size limits decision-making solely on OpE OpE includes risk significant events and impacts on operator response Insights from EPRI survey report related to Al HEAF(3002020692*); Examples include:
Extent and type of electrical equipment containing Al in US plants Features that reduce Al HEAF impact Number of plants that need further evaluation
- Report is publicly and freely available from www.epri.com using the report number 4
Al HEAF - Developing a Practical Resolution Strategy Industry cooperation required to support a timely, efficient, and risk-informed resolution.
Conserves resources and focuses attention Incorporates lessons learned from previous GI outcomes Consistent with Enterprise Risk Management concepts (e.g., managing reputational risk)
Backfit Rule would continue to be applied 5
Al HEAF - What's Next Completion of major modeling improvements - Summer 2021 Solicitation of industry pilot plants for assessment - Fall 2021 Regulatory decision-making based on assessment results - Winter 2021 6
PRA Configuration and Control PRA found acceptable Issuance of SE Plant Modifications Operating Experience Assessing the gap and Data PRA maintenance and upgrades 7
Fall Risk Forum Topics - Overview Applied PRA Operating and Fleet Current Status Practices 8
Operating Presentations from:
Fleet
- Office of Research
- NEI Status
Applied PRA Presentations from: and
- NRR Current
- EPRI Practices
- Industry 10
Questions?
11