ML23198A261

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Terrapower - Natrium EI-NI Separation TR Audit Summary
ML23198A261
Person / Time
Site: 99902100
Issue date: 07/16/2023
From: Mallecia Sutton
NRC/NRR/DANU/UAL1
To: George Wilson
TerraPower
References
Download: ML23198A261 (1)


Text

From:

Mallecia Sutton To:

George Wilson Cc:

Ryan Sprengel; Andrew Proffitt

Subject:

TerraPower: Natrium EI-NI Separation TR Audit Summary Date:

Friday, June 16, 2023 9:18:00 AM Attachments:

TerraPower Natrium EI-NI Separation TR Audit Summary Final.docx Dear Mr. Wilson

Attached is the summary report of an audit conducted by U.S. Nuclear Regulatory Commission (NRC) staff (the staff) of the TerraPower topical report (TR) NATD LIC RPRT 0001, Regulatory Management of Natrium Nuclear Island and Energy Island Design Interfaces (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22277A824), submitted October 4, 2022. The TR contains a summary of the Natrium reactor plant design, interfaces, and safety features; and of TerraPowers process for classifying structures, systems, and components (SSCs); basic plant transient analyses; and evaluation of select NRC regulations relevant to Natriums proposed nuclear island (NI) and energy island (EI). TerraPower requested NRC review and approval of the subject TR to serve as a means, via reference, for Natrium reactor licensees to utilize the regulatory evaluation.

The purpose of the audit was to enable NRC staff to gain a better understanding of the analyses referenced in the TR and the extent to which they support the conclusions drawn in the TR regarding the independence of the Natrium NI and EI.

Thanks,

Mallecia Sutton, Senior Project Manager U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Advanced Reactor Licensing Branch Phone-301-415-0673