Natrium

Project Overview

The U.S. Nuclear Regulatory Commission (NRC) is currently engaged in pre-application activities interactions for the Natrium reactor. The Natrium design combines features from the previous GEH PRISM and TerraPower Traveling Wave designs. The proposed Natrium reactor is a 345 MWe pool type sodium fast reactor using HALEU metal fuel.

For more information, please see the Natrium pre-application documents (NRC Docket 99902100). Additional TerraPower documents can be found at NRC Docket 99902087.

To subscribe to the TerraPower Natrium email service, select TerraPower Natrium from the Advanced Reactors list after entering your email into the GovDelivery system.

For information about TerraPower’s Molten Chloride Fast Reactor (MCFR), please see the MCFR webpage.

For information related to the NRC staff’s review of Kemmerer Power Station Unit 1 application please see TerraPower, LLC -- Kemmerer Power Station Unit 1 Application

Pre-Application Activities 

Product	Type	Reference	Status
Regulatory interpretation of the applicability of 10 CFR 50.10 to the construction of the Sodium Test and Fill Facility	White Paper	ML22154A564	Feedback Provided ML22174A425
Quality Assurance Topical Report (QATR)	Topical Report	ML21005A015	Feedback Provided ML22018A301 ML22018A300 ML21263A236
Advanced SFR Fuel Assembly Qualification Plan	White Paper	ML20316A038	Feedback Provided ML21099A081
Advanced Fuel Qualification Methodology Report-Regulatory Guidance Development Report	White Paper	ML20209A155	Feedback Provided ML20310A278
TerraPower-Type 1 Fuel Pin Qualification Plan	White Paper	ML21057A008	Feedback Provided ML21147A548 ML21153A083
TerraPower, LLC - Natrium Decoupling Strategy	White Paper	ML22035A331	Cancelled
TerraPower, LLC, Submittal of Testing Programs	White Paper	ML22273A073	Feedback Provided ML23074A347
TerraPower, LLC Topical Report, Regulatory Management of Natrium Nuclear Island and Energy Island Design Interfaces	Topical Report	ML22277A824	Feedback Provided ML24011A321
Revised TerraPower, LLC Quality Assurance Topical Report, Revision 14	Topical Report	ML22266A286	Feedback Provided ML23220A295 ML23213A199
TerraPower, LLC, Regulatory Gap Analysis Report	White Paper	ML22266A285	Feedback Provided ML23080A086
Principal Design Criteria for the Natrium Advanced Reactor	Topical Report	ML23024A281	Feedback Provided ML24197A226
Fuel and Control Assembly Qualification Plan	Topical Report	ML23025A409	Feedback Provided ML24220A154
Nascent Thermal Hydraulic Model White Paper	White Paper	ML23080A013	Feedback Provided ML23229A541
Plume Exposure Pathway Emergency Planning Zone Methodology, Revision 1	Topical Report	ML23080A045 ML23321A036	Under Review
An Analysis of the Potential Volcanic Hazards at the Proposed Natrium Site Near Kemmerer, Wyoming	Topical Report	ML23115A387	Feedback Provided ML24059A060
Human Factors Engineering Program Plan and Methodologies	Topical Report	ML23116A226	Under Review
Human Factors Engineering (HFE) Concept of Operations	White Paper	ML23125A328	Feedback Provided ML23321A087
Preliminary Consensus Codes and Standards	White Paper	ML23130A413	Feedback Provided ML23319A338
Radiological Source Term Methodology Report, Revision 1	Topical Report	ML23223A235 ML24017A116	Under Review
Design Basis Accident Methodology for In-Vessel Events without Radiological Release	Topical Report	ML23272A260	Under Review
Radiological Release Consequences Methodology	Topical Report	ML23311A139	Under Review
Reactor Stability Methodology	Topical Report	ML23334A239	Under Review
Partial Flow Blockage Methodology	Topical Report	ML24085A822	Under Review
Design Basis Accident Methodology for Events With Release	Topical Report	ML24082A262	Under Review
Reactor Seismic Isolation System Qualification	Topical Report	ML24068A212	Under Review
Instrumentation and Control Architecture and Design Basis	Topical Report	ML24068A186	Under Review