ML20338A250

FLEX in Risk Informed Licensing Presentation

ML20338A250
Person / Time
Issue date:	12/14/2020
From:	Robert Pascarelli NRC/NRR/DRA
To:
Alexander Schwab
References
Download: ML20338A250 (4)

Text

Treatment of FLEX in Risk Informed Licensing Robert Pascarelli Branch Chief, PRA Licensing Branch A Division of Risk Assessment Office of Nuclear Reactor Regulation

Can FLEX Credit Impact Decision?

• RG 1.174, 1.200: staff reviews PRA key assumptions

• Areas of uncertainty in PRA FLEX credit: data and some operator actions

• Varied FLEX credit in PRA within industry Operating Data Human Reliability Assessment Plant Specific Implementation Application Type

Staff Continues to Review RI LARs

• Improved LARs

• Audits support staff review

• Sensitivity studies used by licensees to disposition credit for FLEX in applications

• If low impact can be demonstrated, staff can proceed with Safety Evaluation 6

5 2

2 50.69 LARS TSTF-505 LARS LARs Received in FY2020 FLEX credit No FLEX credit

Continued Engagement and Progress Next Steps:

NEI FLEX Workshop November 18-19, 2020 NEI FLEX Summit September 1-10, 2020 Public meeting July 29, 2020

• LAR Template for FLEX

• Further dialogue on HRA

• Guidance on PRA upgrades