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MONTHYEARML21319A3542021-11-29029 November 2021 Acceptance of the Hermes Non-Power Test Reactor Construction Permit Application for Kairos Power LLC Project stage: Acceptance Review ML22024A4922022-01-10010 January 2022 Hermes CP RAI - Preliminary Questions on the Hermes PSAR, Email 1 Project stage: Request ML22198A0012022-01-19019 January 2022, 25 January 2022 Summary of 21Jan2022 Phone Conversation W City of Oak Ridge Public Works Project stage: Request ML22028A0022022-02-0202 February 2022 Kairos Hermes Environmental Audit Plan Project stage: Other ML22041A3372022-02-0303 February 2022 Kairos Power LLC, Transmittal of Responses-to NRC Questions 2.3-1 and 2.3-2 on the Hermes Preliminary Safety Analysis Report Project stage: Request ML21364A0132022-02-0808 February 2022 Kairos Power LLC - Application for Construction Permit for Hermes Test Reactor Project stage: Other ML22040A3362022-02-0909 February 2022 Kairos Power LLC, Submittal of Response to NRC Questions 2.5-1, 2.5-2, 2.5-3, and 2.5-4 for PSAR Section 2.5 on Hermes Construction Permit Application Project stage: Request ML22040A3382022-02-0909 February 2022 Kairos Power LLC, Response to NRC Questions 2.5-1, 2.5-2, 2.5-3, and 2.5-4 for PSAR Section 2.5 on Hermes Construction Permit Application Project stage: Other ML22042A0952022-02-10010 February 2022 Kairos Power LLC, Transmittal of Changes to Hermes Construction Permit Application Project stage: Request ML21204A0392022-02-15015 February 2022 Federal Register Notice of Intent to Conduct Scoping and Prepare an EIS - Kairos Hermes CP Review Project stage: Request ML22039A2262022-02-17017 February 2022 Audit Plan for the Kairos Hermes Preliminary Safety Analysis Report (PSAR) Section 6.3 Decay Heat Removal System - February 2022 Project stage: Other ML21326A0592022-02-18018 February 2022 Kairos Hermes CP Review - Notice of Intent to Conduct Scoping Process and Prepare an Environmental Impact Statement Project stage: Other ML22106A0002022-02-28028 February 2022 Construction and Demonstration of a Prototype Mobile Microreactor Feis: Reference for Kairos Hermes CP Application Project stage: Other ML22060A2722022-03-0101 March 2022 Kairos Power, LLC, Transmittal of Changes to Maximum Hypothetical Accident Dose Results in Hermes Construction Permit Application Project stage: Request ML22031A2892022-03-10010 March 2022 Request to Initiate Section 106 Consultation and Scoping Process for Kairos Power Hermes Non-Power Test Reactor Construction Permit Review Project stage: Request ML22088A2942022-03-11011 March 2022 Scoping Comment (3) from Tennessee Historical Commission Kairos Hermes CP Application Review Project stage: Other ML22089A1662022-04-0808 April 2022 Kairos Power LLC - Hermes Construction Permit Preliminary Safety Analysis Report I&C Repor (Chapter 7) Audit Plan (Cac/Epid No. 000955/05007513/L-2021-NEW-0011) Project stage: Other ML22169A0092022-04-12012 April 2022 NPS Scoping Comments on Kairos Test Reactor Project stage: Request ML22107A0062022-04-17017 April 2022 Oak Ridge Reservation Annual Site Environmental Report 2017: Reference for Kairos Hermes CP Application Project stage: Other ML22115A2042022-04-22022 April 2022 Kairos Power, LLC, Transmittal of Reponses to NRC Requests for Confirmation of Information for the Review of the Hermes Environmental Report Project stage: Request ML22117A2152022-04-22022 April 2022, 27 April 2022 Kairos Power LLC, Transmittal of Supplemental Information for NRC Information Need HCUL-10 for the Hermes Environmental Review Project stage: Request ML22117A2182022-04-27027 April 2022 Kairos Power LLC, Transmittal of Changes to Hermes Environmental Report Resulting from NRC Environmental Review Audit Project stage: Request ML22110A0182022-05-0505 May 2022 Kairos Power LLC, Summary of March 23, 2022, Public Outreach Meeting on the Proposed Kairos Hermes Test Reactor with Designated Period for Receipt of Environmental Scoping Comments Project stage: Request ML22143B0162022-05-27027 May 2022 Audit Plan for Hermes Site Characteristics PSAR Chapter 2 Project stage: Other ML22181B1572022-06-30030 June 2022 Kairos Power LLC Transmittal of Changes to Construction Permit Application Project stage: Request ML22194A0142022-08-0101 August 2022, 31 August 2022 Kairos Hermes Construction Permit Application - Issuance of Environmental Scoping Summary Report Project stage: Request ML22230D0762022-08-0505 August 2022 Final RCI 349 on Salt Purity in the Chemistry Control System and the Inert Gas System Project stage: Other ML22227A1802022-08-0808 August 2022 Final RAI 348 on Shutdown Rod Reliability Project stage: RAI ML22196A3872022-08-24024 August 2022 Kairos Hermes CP Review - Environmental Audit Report Project stage: Request ML22272A5932022-09-29029 September 2022 Kairos Power, LLC - Submittal of the Preliminary Safety Analysis Report for the Kairos Power Fluoride Salt-Cooled, High Temperature Non-Power Reactor (Hermes), Revision 1 Project stage: Request ML23019A3602022-11-0606 November 2022, 15 November 2022 Kairos Power LLC, Additional Information Related to Construction Permit Application - PSAR Chapter 1 Project stage: Request ML23019A3612022-11-15015 November 2022 Kairos Power LLC, Additional Information Related to Construction Permit Application - PSAR Chapter 1 Project stage: Other ML22329A0112022-11-16016 November 2022 Deis Public Meeting Transcript for Kairos Hermes Construction Permit Application Project stage: Meeting ML22311A5532022-11-16016 November 2022 Kairos Hermes NRC Staff Presentation at Nov 16 Public Meeting on the Draft Environmental Impact Statement for the Construction Permit for the Kairos Hermes Test Reactor Project stage: Request ML22342B2822022-12-0808 December 2022 Kairos Power LLC, Transmittal of Reponses to NRC Question on Hermes Preliminary Safety Analysis Report Project stage: Request ML22353A6252022-12-19019 December 2022 Kairos Power LLC, Transmittal of Changes to Preliminary Safety Analysis Report Chapter 6 and Response to NRC Question on Dhrs Testing Project stage: Request ML23055A6722023-02-24024 February 2023, 28 February 2023 Kairos Power LLC, Submittal of the Preliminary Safety Analysis Report for the Kairos Power Fluoride Salt-Cooled, High Temperature Non-Power Reactor (Hermes), Revision 2 Project stage: Request ML23031A1652023-03-21021 March 2023 Kairos Attendance List Project stage: Request ML23031A1602023-03-21021 March 2023 Summary of Public Meeting for the Draft Environmental Impact Statement for the Kairos Hermes Test Reactor Construction Permit Application ML23151A7432023-05-31031 May 2023 Kairos Power, LLC, Submittal of the Preliminary Safety Analysis Report for the Kairos Power Fluoride Salt-Cooled, High Temperature Non-Power Reactor (Hermes), Revision 3 Project stage: Request ML23158A2662023-06-13013 June 2023 Transmittal of Safety Evaluation for Hermes Construction Permit Application Project stage: Approval ML23158A2652023-06-13013 June 2023 Safety Evaluation for the Kairos Power LLC Construction Permit Application for the Hermes Non-Power Test Reactor Project stage: Request ML23158A2682023-06-13013 June 2023 Safety Evaluation for Hermes Construction Permit Application Project stage: Approval ML23181A1072023-07-18018 July 2023 Summary of August 25 and 30 2022 Public Meetings on the Kairos Hermes Preliminary Safety Analysis Report Project stage: Meeting ML23353A0692024-01-0505 January 2024 Kairos Power, LLC-Hermes 2-Environmental Report Audit Plan Project stage: Other 2022-03-11
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November 29, 2021 Mr. Peter Hastings Vice President, Regulatory Affairs and Quality Kairos Power LLC 707 W Tower Ave Alameda, CA 94501
SUBJECT:
ACCEPTANCE FOR DOCKETING OF THE HERMES NON-POWER TEST REACTOR CONSTRUCTION PERMIT APPLICATION SUBMITTED BY KAIROS POWER LLC (EPID: L-2021-NEW-0011 AND L-2021-NEW-0012)
Dear Mr. Hastings:
By letter to the U.S. Nuclear Regulatory Commission (NRC) dated September 29, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession Number (No.)
ML21272A375), Kairos Power LLC (Kairos) submitted an application for a construction permit for the Hermes non-power test reactor, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) Part 50, Domestic Licensing of Production and Utilization Facilities, and Section 104c of the Atomic Energy Act of 1954, as amended. Additionally, by letter dated October 31, 2021 (ADAMS Accession No. ML21306A131), Kairos submitted an Environmental Report in support of its Hermes construction permit application. The test reactor is to be built in Oak Ridge, Tennessee. The purpose of this letter is to inform you of the results of the NRC staffs acceptance review of this application.
The NRC staff performed an acceptance review and determined that Kairos submitted sufficient information in accordance with 10 CFR 2.101, Filing of Application; 10 CFR 50.33, Contents of applications; general information; 10 CFR 50.34, Contents of application; technical information; and 10 CFR 51.50, Environmental report-construction permit, early site permit, or combined license stage. The acceptance review confirmed that the NRC staff will be able to conduct its detailed safety and environmental technical reviews and to complete the reviews on a predictable schedule.
The NRC staff performed the acceptance review of the construction permit application in accordance with 10 CFR Part 2, Agency Rules of Practice and Procedure, Part 50, and the agencys procedures; assessing the various criteria and considerations specified in the agencys procedures associated with accepting an application. The NRC staff concluded that the application is acceptable for docketing. However, the NRC staffs determination does not preclude requests for additional information (RAIs) as the review proceeds. The docket number established for the Hermes non-power test reactor is 50-7513.
The NRC staff will conduct its safety-focused review based on the guidance in NUREG-1537, Guidelines for the Preparation and Review of Applications for the Licensing of Non-Power
P. Hastings Reactors, Part 1, "Format and Content" (ADAMS Accession No. ML042430055) and Part 2, Standard Review Plan and Acceptance Criteria" (ADAMS Accession No. ML042430048). The Hermes application review will be the first time the NRC has evaluated (1) tri-structural isotropic particle fuel and (2) molten salt coolant for a license or permit. A few of the novel aspects on which the NRC staff will focus its safety review include the separation of hot and cold legs in the primary system, assurance of stable flow in the decay heat removal system, tritium management, and the effects of molten salt on graphite. Because of the novel aspects of this design, the NRC staff anticipates that the application review will be greatly aided by the pre-application activities undertaken by Kairos and will continue to require additional focus from Kairos and the NRC staff to ensure a timely review.
On November 16, 2021, Kairos notified the NRC staff via e-mail (ADAMS Accession No. ML21320A217), of a possible design change in the secondary side coolant salt. Kairos stated that it does not believe that such a design change would affect the Hermes safety case.
However, the Preliminary Safety Analysis Report would need to be revised if the secondary salt is changed. The NRC staff will consider new information related to a possible design change in the secondary salt when it is submitted. A secondary salt change or other design changes could affect the review schedule.
Based in part on the extensive pre-application engagement by Kairos, the NRC staff estimates that it will complete and issue the Final Safety Evaluation Report and the Final Environmental Impact Statement by September 2023. This date could change due to several factors, including RAIs, unanticipated changes to the scope of the review, unsolicited supplements to the application, design changes, and other factors. The NRC staff will provide a review schedule with key milestones and resource estimates within 30 days of the date of this letter.
A notice of acceptance for docketing will be published by the Office of the Federal Register.
If you have any questions, please contact me at (301) 415-2062, or via email.at Benjamin.Beasley@nrc.gov.
Sincerely, Benjamin G. Digitally signed by Benjamin G.
Beasley Beasley Date: 2021.11.29 11:37:21 -05'00' Benjamin Beasley, Senior Project Manager Advanced Reactor Licensing Branch Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation Docket No.: 50-7513
ML21319A354 NRR-106 OFFICE NRR/DANU/UARL:PM NMSS/REFS/ERNRB:PM NRR/DANU/UARL:LA NMSS/REFS/ERNRB:BC NAME BBeasley TDozier CSmith KErwin DATE 11/16/2021 11/16/2021 11/17/2021 11/18/2021 OFFICE NRR/DANU/UTB2:BC NRR/DANU/UARL/BC NRR/DANU/UARL/PM NAME CVan Wert WKennedy BBeasley DATE 11/19/2021 11/18/2021 11/29/2021