ML21210A028

Regulatory Commitment Update

ML21210A028
Person / Time
Site:	Callaway
Issue date:	07/29/2021
From:	Ameren Missouri, Union Electric Co
To:	Office of Nuclear Reactor Regulation
Shared Package
ML21210A025	List: ML21210A027 ML21210A028 ULNRC-06678, Supplemental Information for Application to Adopt 10 CFR 50.69, Risk-Informed Categorzation and Treatment of Structures, Systems and Components for Nuclear Power Reactors
References
ULNRC-06678
Download: ML21210A028 (2)

Text

Enclosure 2 to ULNRC-06678 Regulatory Commitment Update (1 page)

LIST OF COMMITMENTS The following table identifies those actions committed to by Ameren Missouri in this document. Any other statements in this document are provided for information purposes and are not considered commitments. Please direct questions regarding these commitments to: Justin Hiller at 314-225-1141.

Regulatory Commitment and Completion Schedule Commitment Committed Commitment Status Completion Date Tracking Number The resolution of Fire PRA Prior to using the 50437 Complete Suggestion F&O FSS-B1-03 was Fire PRA to support determined to be an upgrade during implementation of F&O closure review. The upgrade any alternative was not reviewed at the time of treatments under identification and has not yet been the 10 CFR 50.69 reviewed by an independent peer application.

review. To resolve FSS-B1-03 and also close NFPA-805 LAR Table S-3 Implementation item 13-805-001, the Fire PRA was updated to perform the Human Reliability Analysis (HRA) evaluations for MCR abandonment using detailed assessments within HRA Calculator rather than the screening values discussed in this F&O. This change was determined by a recent independent peer review team to be an upgrade. PRA scope and technical adequacy guidance requires upgrades to be independently peer reviewed and Finding F&Os to be closed, or dispositioned for a given application. Therefore, Ameren Missouri will conduct a focused scope peer review on this upgrade and close any new Finding F&Os using an endorsed closure process.