Letter Sequence Approval |
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CAC:000431, (Approved, Closed) EPID:L-2021-TOP-0022, Final Safety Evaluation of Metallic Material Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor (KP-TR-013) (Approved, Closed) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance
Results
- Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval
Other: ML20280A970, ML20343A224, ML21147A547, ML21160A221, ML21218A045, ML22018A300, ML23097A123, ML23097A127, ML24103A224, ML24212A030, ML24262A066, ML24297A138, ML25017A130, ML25023A086, ML25028A267, ML25161A172, ML25248A302, ML25248A303, ML25325A151
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MONTHYEARML23011A1052011-01-11011 January 2011
Redacted Draft Safety Evaluation of Graphite Material Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor (KP-TR-014)
Project stage: Draft Approval
ML21263A2362020-08-0505 August 2020
Safety Evaluation by the Office of Nuclear Reactor Regulation Regarding the Terrapower, LLC Quality Assurance Topical Report
Project stage: Approval
ML20280A9702020-10-21021 October 2020
Terrapower - Acceptance Topical Report Quality Assurance Program Description
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ML20294A3372020-11-10010 November 2020
Letter and Final Safety Evaluation for Kairos Power, LLC Topical Report-KP Fhr Risk-Informed Performance-Based Licensing Basis Development Methodology (Revision 1) (EPID No. L-2019-TOP-0009/CAC No. 000431)
Project stage: Approval
ML20318A2242020-11-13013 November 2020
Kairos Power, LLC, KP-FHR Fuel Performance Methodology
Project stage: Request
ML20328A2302020-11-23023 November 2020
Kairos Power LLC, Submittal of Approved KP-FHR Risk-Informed Performance-Based Licensing Basis Development Methodology Topical Report
Project stage: Request
ML20343A2242020-12-0808 December 2020
Verification Letter of the Approval Version of Kairos Power LLC Topical Report KP-TR-O09-NP, - KP-FHR Risk-Informed Performance-Based Licensing Basis Development Methodology - (Revision 1) (CAC No. 000431)
Project stage: Other
ML21005A0152020-12-23023 December 2020
Revision to Terrapower, LLC - Quality Assurance Topical Report
Project stage: Request
ML21021A3642021-01-21021 January 2021
Enclosure 2: Presentation Materials About Construction Permit Application for the KP-FHR (Non-Proprietary)
Project stage: Request
ML21071A0822021-03-0808 March 2021
Kairos Power, LLC - Quality Assurance Program for the Kairos Power Flouride Salt-Cooled High Temperature Reactor Topical Report (Revision 1)
Project stage: Request
ML21071A0832021-03-31031 March 2021
Kairos Power, LLC - KP-TR-007-NP, Quality Assurance Program for the Kairos Power Flouride Salt-Cooled High Temperature Reactor Topical Report, Revision 1 (Non-Proprietary)
Project stage: Request
ML21105A5182021-04-15015 April 2021
Kairos Power LLC, Quality Assurance Program for the Flouride Salt-Cooled High Temperature Reactor Topical Report (Revision 2)
Project stage: Request
ML21117A0472021-04-26026 April 2021
Kairos Power LLC, Quality Assurance Program for the Flouride Salt-Cooled High Temperature Reactor Topical Report(Revision 3)
Project stage: Request
ML21117A0482021-04-26026 April 2021
Quality Assurance Program for the Kairos Power Flouride Salt Cooled High Temperature Reactor Topical Report, Revision 3
Project stage: Request
ML21105A5192021-04-30030 April 2021
Kairos Power LLC, Quality Assurance Program for the Flouride Salt-Cooled High Temperature Reactor Topical Report Revision 2
Project stage: Request
ML21148A2362021-05-28028 May 2021
Response to Request for Additional Information on NRCs Assessment of the Quality Assurance Program Description for Terrapower, LLCs Quality Assurance Topical Report
Project stage: Response to RAI
ML21147A5472021-06-0909 June 2021
Kairos Power Hermes Test Reactor Psotulated Events Audit Plan
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ML21160A2212021-06-22022 June 2021
Letter SE Kairos Fuel Performance Methodology Topical
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ML21183A2002021-07-0202 July 2021
Revised Response to Request for Additional Information on NRCs Assessment of the Quality Assurance Program Description for Terrapower, LLCs Quality Assurance Topical Report
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ML21218A0452021-08-17017 August 2021
Kairos Hermes PSAR Pre-Submittal Audit Plan - Rev. 3
Project stage: Other
ML21217A0102021-08-19019 August 2021
NRC Staff Presentation at August 19 2021 Pre-App Meeting with Kairos Power, LLC - Fuel Cycle and Transportation
Project stage: Request
ML21194A4392021-08-20020 August 2021
Draft Kairos Flibe Thermophisical Properties Audit Plan 6 30 21
Project stage: Draft Other
ML21215A5092021-08-31031 August 2021
NRC Form 898, Graphite Material Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor, Revision 1
Project stage: Other
ML21308A5982021-11-16016 November 2021
Letter - Kairos Power, LLC - Safety Evaluation for Kairos Power, LLC Topical Report KP-TR-007-NP, Quality Assurance Program
Project stage: Approval
ML21308A5972021-11-16016 November 2021
Enclosure - Safety Evaluation for Kairos Power LLC Topical Report KP-TR-007-NP, Quality Assurance Program for the Kairos Power Fluoride Salt-Cooled High Temperature Reactor, Revision 3
Project stage: Approval
ML22018A3002022-01-21021 January 2022
Letter - NRC Feedback on Terrapower Advanced SER QAPD
Project stage: Other
ML22018A1612022-01-31031 January 2022
Kairos Power LLC, Kp& 8208;TR& 8208;004& 8208;NP, Regulatory Analysis for the Kairos Power Fluoride Salt-Cooled High Temperature Reactor, Rev. 4
Project stage: Request
PMNS20220090, Technical Discussion of Kairos Power Responses to the NRC Staffs Preliminary Questions on the Graphite Materials Qualification Topical Report, Revision 12022-02-0404 February 2022
Technical Discussion of Kairos Power Responses to the NRC Staffs Preliminary Questions on the Graphite Materials Qualification Topical Report, Revision 1
Project stage: Request
ML22024A4852022-02-0808 February 2022
OEDO-21-00545 -Safety Evaluation of the Kairos Power LLC Topical Report KP-TR-012-P, Revision 1, KP-FHR Mechanistic Source Term Methodology
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ML22047A3262022-02-16016 February 2022
Kairos Power LLC, Topical Report, Submittal of KP8-FHR Mechanistic Source Term Methodology Topical Report, Revision 2
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ML22088A2312022-03-28028 March 2022
KP-TR-012-NP, Revision 3, KP-FHR Mechanistic Source Term Methodology Topical Report
Project stage: Request
ML22088A2292022-03-28028 March 2022
Kairos Power LLC, Submittal of KP-FHR Mechanistic Source Term Methodology Topical Report, Revision 3
Project stage: Request
ML22112A1332022-04-22022 April 2022
Kairos Power, LLC, Safety Evaluation for KP-TR-012 KP-FHR Mechanistic Source Term Methodology Topical Report, Revision 3 (EPID L-2020-TOP-0051/CAC 000431)
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ML22136A0892022-05-26026 May 2022
Safety Evaluation for Kairos Regulatory Analysis Topical Report Kp TR-004, Revision 4
Project stage: Approval
PMNS20220667, Kairos Power Graphite Materials Qualification Topical Report, Rev. 2: Follow-Up Clarification Meeting2022-06-16016 June 2022
Kairos Power Graphite Materials Qualification Topical Report, Rev. 2: Follow-Up Clarification Meeting
Project stage: Request
ML22186A2132022-07-0505 July 2022
Kairos Power LLC, Fuel Qualification Methodology for Fluoride Salt-Cooled High Temperature Reactor (KP-FHR), Revision 2
Project stage: Request
PMNS20220736, Kairos Power Metallic Materials Qualification Topical Report, Rev. 2: Closed Clarification Meeting2022-07-15015 July 2022
Kairos Power Metallic Materials Qualification Topical Report, Rev. 2: Closed Clarification Meeting
Project stage: Request
ML22216A1792022-07-29029 July 2022
Submission of X Energy, LLC (X-energy) TRISO-X Pebble Fuel Qualification Methodology
Project stage: Request
PMNS20220785, Kairos Power Metallic Materials Qualification Topical Report, Rev. 2: Closed Clarification Meeting2022-08-0202 August 2022
Kairos Power Metallic Materials Qualification Topical Report, Rev. 2: Closed Clarification Meeting
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ML22231B2222022-08-19019 August 2022
Kairos Power LLC, KP-FHR High Temperature Metallic Materials Topical Report, Revision 3
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ML22231B2242022-08-31031 August 2022
KP-TR-013-NP, Revision 3, Metallic Materials Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor
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PMNS20220925, Kairos Power Metallic Materials Qualification Topical Report, Rev. 3: Closed Clarification Meeting2022-09-0101 September 2022
Kairos Power Metallic Materials Qualification Topical Report, Rev. 3: Closed Clarification Meeting
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Kairos Power LLC, KP-FHR High Temperature Metallic Materials Topical Report, Revision 4
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ML22263A4592022-09-20020 September 2022
Metallic Materials Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor, KP-TR-013-NP, Revision 4
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ML22265A2182022-09-21021 September 2022
Withdrawal of X Energy, LLC (X-energy) Xe-100 Topical Report: TRISO-X Pebble Fuel Qualification Methodology, Revisions 1 and 2
Project stage: Request
ML22266A2862022-09-23023 September 2022
Submittal of Revised Terrapower, LLC Quality Assurance Topical Report, Revision 14
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ML22259A1452022-09-30030 September 2022
KP-TR-014-NP, Revision 4, Graphite Material Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor
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ML22318A2362022-11-10010 November 2022
Submission of X Energy, LLC (X-energy) Xe-100 Licensing White Paper Probabilistic Risk Assessment Technical Adequacy Approach
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ML22363A2852022-11-30030 November 2022
X Energy, LLC (X-energy), Proprietary Review of Draft Safety Evaluation for Xe-100 Topical Report TRISO-X Pebble Fuel Qualification Methodology
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ML22354A2982022-12-20020 December 2022
Kairos Power LLC, Presentation Material Advisory Committee on Reactor Safeguards, Subcommittee Graphite Material Qualification Topical Report (KP-TR-014, Revision 4)
Project stage: Request
2021-08-31
[Table View] |
Text
OFFICIAL USE ONLY - PROPRIETARY AND EXPORT CONTROLLED INFORMATION OFFICIAL USE ONLY - PROPRIETARY AND EXPORT CONTROLLED INFORMATION Mr. Peter Hastings Vice President, Regulatory Affairs and Quality Kairos Power LLC 707 W Tower Ave.
Alameda, CA 94501
SUBJECT:
KAIROS POWER LLC - FINAL SAFETY EVALUATION FOR TOPICAL REPORT GRAPHITE MATERIAL QUALIFICATION FOR THE KAIROS POWER FLUORIDE SALT-COOLED HIGH-TEMPERATURE REACTOR (REVISION 4)
(EPID NO. L-2021-TOP-0022/CAC NO. 000431)
Dear Mr. Hastings:
This letter provides the final safety evaluation (SE) for the Kairos Power LLC (Kairos) topical report (TR) Graphite Material Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor, Revision 4. By letter dated July 8, 2021, Kairos submitted Revision 1 of the TR for the U.S. Nuclear Regulatory Commission (NRC) staff review (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21190A218). On November 2, 2021, the NRC staff provided its review questions to Kairos (ML23059A265).
The review questions were discussed during closed meetings held between the NRC staff and Kairos on December 15, 2021, February 10, 2022, February 15, 2022, February 22, 2022, March 1, 2022, March 8, 2022, and March 15, 2022. By letter dated May 11, 2022, Kairos submitted Revision 2 of the TR (ML22132A202) to address the NRC staff review questions.
By letter dated July 13, 2022, Kairos submitted Revision 3 of the TR (ML22194A943) to address questions discussed during a closed meeting held between the NRC staff and Kairos on June 14, 2022. By letter dated September 16, 2022, Kairos submitted Revision 4 of the TR (ML22259A142) to address a question from the NRC staff related to the Kairos Hermes reactor design.
The NRC staffs final SE for Graphite Material Qualification for the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor, Revision 4, is enclosed. The NRC staff provided Kairos a draft of the SE for the purpose of identifying proprietary information on December 7, 2022 (ML22343A285). On December 19, 2022, Kairos confirmed that the proprietary information in the draft SE was appropriately marked (ML23058A226). to this letter contains Proprietary and Export Controlled Information. When separated from, this letter is DECONTROLLED.
March 13, 2023
OFFICIAL USE ONLY - PROPRIETARY AND EXPORT CONTROLLED INFORMATION OFFICIAL USE ONLY - PROPRIETARY AND EXPORT CONTROLLED INFORMATION P. Hastings The Advisory Committee on Reactor Safeguards (ACRS) was briefed on this TR on January 12, 2023, and February 1, 2023. The ACRS provided its recommendations for the publication of this SE in a letter dated February 13, 2023 (ML23038A168). The enclosed SE is final, and a redacted version will be made publicly available.
The NRC staff requests that Kairos publish an accepted version of this TR within 3 months of receipt of this letter. The accepted version shall incorporate this letter and the enclosed SE after the title page. The accepted version shall include an "-A" (designating accepted) following the TR identification number.
If you have any questions, please contact Richard Rivera at Richard.Rivera@nrc.gov.
Sincerely, William Jessup, Chief Advanced Reactor Licensing Branch 1 Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation Project No.: 99902069 and Docket No.: 05007513
Enclosures:
1.
Proprietary (Non-Public) Safety Evaluation 2.
Redacted (Public) Safety Evaluation Cc w/ redacted encl: Distribution via Kairos Power FHR and Kairos Power Hermes Signed by Jessup, William on 03/13/23
Pkg ML23062A732 Letter: ML23062A734 Safety Evaluation: ML23039A166 Redacted Safety Evaluation: ML23062A733 NRR-106 OFFICE NRR/DANU/UAL1:PM NRR/DANU/UAL1:LA OGC/NLO NAME RRivera DGreene MWright DATE 3/6/2023 3/10/2023 3/10/2023 OFFICE NRR/DANU/UAL1/BC NAME WJessup DATE 3/13/2023
