ML21053A387
| ML21053A387 | |
| Person / Time | |
|---|---|
| Issue date: | 02/11/2021 |
| From: | Anders Gilbertson NRC/RES/DRA/PRB |
| To: | |
| GIlbertson, Anders - 301 415 1541 | |
| References | |
| Download: ML21053A387 (9) | |
Text
NRC Liaison Report Risk-Informed Activities Anders Gilbertson Office of Nuclear Regulatory Research Division of Risk Analysis American Society of Mechanical Engineers/American Nuclear Society (ASME/ANS) Joint Committee on Nuclear Risk Management (JCNRM) Meeting February 11, 2021
- NRC Risk-Informed Activities Update
- ASME/ANS PRA Standards
- Industry Guidance 2
Overview NRC Liaison Report Risk-Informed Activities February 11, 2021
RG 1.200, Revision 3
Published final in December 2020 (ML20238B871)
New endorsements include:
o NEI 17-07, Revision 2 o
Select portions of PWROG-19027-NP, Revision 1 o
ASME/ANS RA-S Case 1 RG 1.200, Revision 4
Currently expected to endorse:
o New edition of the Level 1/LERF PRA standard o
Level 2 PRA standard o
Appendix to new edition of the Level 1/LERF PRA standard on advanced LWRs for design certification 3
Regulatory Guide 1.200 NRC Liaison Report Risk-Informed Activities February 11, 2021
NRC staff provided comments to NEI on NEI 17-07 in December 2018.
NEI has piloted peer review of newly developed methods using NEI 17-07 in spring/summer 2019 NEI 17-07 has been updated based on lessons learned from the pilots and NRC comments (ML19241A615)
NRC endorsed in RG 1.200, Revision 3 4
NEI 17-07 NRC Liaison Report Risk-Informed Activities February 11, 2021
5 NRC completed the guidelines for review and endorsement of the ASME/ANS Non-LWR (NLWR) PRA standard (ML19235A285)
NRC to release a revision to the staffs action plan for endorsement of the NLWR PRA standard (ML20104C132)
NRC endorsement of the NLWR PRA standard is to be provided in a new trial use regulatory guide (RG) separate from RG 1.200 Endorsement on CC I and CC II Development of staff position on different stages of the design process Consideration of LMP Consistency with anticipated related staff endorsements of LWR PRA standard requirements yet to be published Current schedule for the trial use RG concludes by December 2021 NEI has developed guidance on NLWR PRA peer review, NEI 20-09, which will be endorsed in the new trial use RG Non-LWR and LWR Activities (1 of 2)
NRC Liaison Report Risk-Informed Activities February 11, 2021
6 Non-LWR and LWR Activities (2 of 2)
Continued progress on the Advanced LWR (ALWR) PRA standard is reliant on a stable version of new edition of the Level 1/LERF PRA standard Endorsement of the ALWR PRA standard is anticipated to be provided in RG 1.200, Revision 4 NRC will need to consider input from external stakeholders on the priority of having an NRC endorsement NRC Liaison Report Risk-Informed Activities February 11, 2021
7 New Edition of the ASME/ANS Level 1/LERF LWR PRA Standard Following publication of the ANSI standard, NRC staff will start preparing for the review and endorsement Staff endorsement will include broad consideration of issues that came up during the consensus process Staff endorsement will also consider the relationships between the new edition and the published and endorsed ASME/ANS NLWR PRA standard NRC Liaison Report Risk-Informed Activities February 11, 2021
8 PRA Acceptability All three elements must work together NRC Liaison Report Risk-Informed Activities February 11, 2021
ALWR advanced light-water reactor ANS American Nuclear Society ASME American Society of Mechanical Engineers CC Capability Category CCF common-cause failure CFR Code of Federal Regulations EPRI Electric Power Research Institute FAQ Frequency Asked Question HRA Human Reliability Analysis JCNRM Joint Committee on Nuclear Risk Management LAR license amendment request LERF large early release frequency LPSD low power and shutdown LWR light-water reactor MOU memorandum of understanding NDM newly-developed method NEI Nuclear Energy Institute NFPA National Fire Protection Association NOED Notice of Enforcement Discretion NRC U.S. Nuclear Regulatory Commission NRR Office of Nuclear Reactor Regulation OpE Operating experience PRA probabilistic risk assessment PWROG Pressurized-Water Reactor Owners Group RAI Request for additional information RES Office of Nuclear Regulatory Research RG Regulatory Guide RITSTF Risk-Informed TSTF ROP Reactor Oversight Process SDP Significance Determination Process TS technical specification TSTF Technical Specification Task Force 9
Acronyms NRC Liaison Report Risk-Informed Activities February 11, 2021