ML25171A021
| ML25171A021 | |
| Person / Time | |
|---|---|
| Site: | Kemmerer File:TerraPower icon.png |
| Issue date: | 06/17/2025 |
| From: | George Wilson TerraPower |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TP-LIC-LET-0431 | |
| Download: ML25171A021 (1) | |
Text
June 17, 2025 U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 ATTN: Document Control Desk TP-LIC-LET-0431 Docket Number 50-613
Subject:
Transmittal of Probabilistic Site Response Analysis Calculation of GMRS and SSE Spectra TerraPower, LLC (Terra Power) on behalf of US SFR Owner, LLC (USO), submits this letter to provide the probabilistic site response analysis calculations to develop ground motion response spectra, safe shutdown earthquake, and the corresponding strain-compatible soil property profiles for Kemmerer Power Station Unit 1. Enclosure 2 is provided on the CD-ROM that is included with this letter.
The report contains proprietary information and as such, it is requested that Enclosure 2 be withheld from public disclosure in its entirety in accordance with 10 CFR 2.390, "Public inspections, exemptions, requests for withholding." An affidavit certifying the basis for the request to withhold Enclosure 2 from public disclosure is included as Enclosure 1.
This letter and enclosure make no new or revised regulatory commitments.
If you have any questions regarding this submittal, please contact Ian Gifford at igifford@terrapower.com.
Sincerely, George Wilson Senior Vice President of Regulatory Affairs Terra Power, LLC D 13 2.
NRR 15800 Northup Way, Bellevue, WA 98008 www.TerraPower.com P. + 1 (425) 324-2888 F. + 1 (425) 324-2889
Enclosures:
- 1.
- 2.
June 17, 2025 Page 2 of 2 Terra Power, LLC Affidavit and Request for Withholding from Public Disclosure (10 CFR 2.390(a)(4))
241412-CA Probabilistic Site Response Analysis Calculation of GMRS and SSE Spectra (Proprietary) cc:
Mallecia Sutton, NRC Josh Borromeo, N RC Nathan Howard, DOE Jeff Ciocco, DOE
ENCLOSURE 1 TerraPower, LLC Affidavit and Request for Withholding from Public Disclosure (10 CFR 2.390(a)(4))
TerraPower, LLC Affidavit and Request for Withholding from Public Disclosure (10 CFR 2.390(a)(4))
I, George Wilson, hereby state:
- 1. I am the Senior Vice President, Regulatory Affairs and I have been authorized by Terra Power, LLC (TerraPower) to review information sought to be withheld from public disclosure in connection with the development, testing, licensing, and deployment of the Natrium reactor and its associated fuel, structures, systems, and components, and to apply for its withholding from public disclosure on behalf of Terra Power.
- 2. The information sought to be withheld, in its entirety, is contained in Enclosure 2, which accompanies this Affidavit.
- 3. I am making this request for withholding, and executing this Affidavit as required by 10 CFR 2.390(b )(1 ).
- 4. I have personal knowledge of the criteria and procedures utilized by Terra Power in designating information as a trade secret, privileged, or as confidential commercial or financial information that would be protected from public disclosure under 10 CFR 2.390(a)(4).
- 5. The information contained in Enclosure 2 accompanying this Affidavit contains non-public details of the TerraPower regulatory and developmental strategies intended to support NRC staff review.
- 6. Pursuant to 10 CFR 2.390(b)(4), the following is furnished for consideration by the Commission in determining whether the information in Enclosure 2 should be withheld:
- a. The information has been held in confidence by TerraPower.
- b. The information is of a type customarily held in confidence by TerraPower and not customarily disclosed to the public. TerraPower has a rational basis for determining the types of information that it customarily holds in confidence and, in that connection, utilizes a system to determine when and whether to hold certain types of information in confidence.
The application and substance of that system constitute TerraPower policy and provide the rational basis required.
- c. The information is being transmitted to the Commission in confidence and, under the provisions of 10 CFR 2.390, it is received in confidence by the Commission.
- d. This information is not available in public sources.
- e. TerraPower asserts that public disclosure of this non-public information is likely to cause substantial harm to the competitive position of TerraPower, because it would enhance the ability of competitors to provide similar products and services by reducing their expenditure of resources using similar project methods, equipment, testing approach, contractors, or licensing approaches.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on: June 17, 2025 George Wilson Senior Vice President, Regulatory Affairs TerraPower, LLC