ML18261A031

Letter to D. Tallman U.S. NRC Approval of Sacramento Municipal Utility Request for Withholding Information from Public Disclosure for Rancho Seco ISFSI (Cac/Epid Nos. 001028/L-2018-RNW-0005; 000993/L-2018-LNE-0004)

ML18261A031
Person / Time
Site:	07200011
Issue date:	09/14/2018
From:	Wendy Reed Renewals and Materials Branch
To:	Tallman D Rancho Seco Assets Power Generation
Reed W
References
EPID L-2018-LNE-0004, EPID L-2018-RNW-0005
Download: ML18261A031 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 14, 2018 Mr. Dan Tallman,Manager Rancho Seco Assets Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, CA 95638-9799

SUBJECT:

U.S. NUCLEAR REGULATORY COMMISSION APPROVAL OF SACRAMENTO MUNICIPAL UTILITY DISTRICT REQUEST FOR WITHHOLDING INFORMATION FROM PUBLIC DISCLOSURE FOR RANCHO SECO INDEPENDENT SPENT FUEL STORAGE INSTALLATION (CAC/EPID NOS. 001028/L-2018-RNW-0005; 000993/L-2018-LNE-0004)

Dear Mr. Tallman:

By two letters, both dated August 6, 2018, Sacramento Municipal Utility District submitted two affidavits, both dated August 3, 2018, executed by Prakash Narayanan, Chief Technology Officer, TN Americas LLC (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML18221A278 and ML18221A292). You requested that portions of various chapters and appendices of the Rancho Seco (RS) Independent Spent Fuel Storage Installation (ISFSI) license renewal application (LRA) be withheld from public disclosure pursuant to Title 10 of the Code of Federal Regulations (10 CFR), Part 2, Section 2.390.

The affidavits stated that the submitted information should be considered exempt from mandatory public disclosure for the following reasons:

• The information sought to be withheld from public disclosure involves operating experience with spent fuel storage system aging and details of spent fuel storage system aging management studies associated with the renewal of systems using the NUHOMS technology, plus certain calculations associated with renewal of these NUHOMS based systems. The NUHOMS technology is owned and has been held in confidence by TN Americas LLC.

• The information is of a type customarily held in confidence by TN Americas LLC and not customarily disclosed to the public. TN Americas LLC has a rational basis for determining the types of information customarily held in confidence by it.

• Public disclosure of the information is likely to cause substantial harm to the competitive position of TN Americas LLC because the information consists of operating experience with the aging degradation of systems using the NUHOMS technology and details of spent fuel storage system aging management studies and planned aging management strategies associated with the renewal of systems using the NUHOMS technology, the application of which provide a competitive economic advantage. The availability of such information to competitors would enable them to modify their product to better compete with TN Americas LLC, take marketing or other actions to improve their product's

D. Tallman 2 position or impair the position of TN America LLC's product, and avoid developing similar data and analyses in support of their processes, methods or apparatus.

We have reviewed your application and the material in accordance with the requirements of 10 CFR 2.390 and, on the basis of your statement, have determined that the submitted information sought to be withheld contains proprietary commercial information and should be withheld from public disclosure.

Therefore, portions of various chapters and appendices of the RS ISFSI LRA, marked as proprietary, will be withheld from public disclosure pursuant to 10 CFR 2.390(b)(5) and Section 103(b) of the Atomic Energy Act of 1954, as amended. Withholding from public inspection shall not affect the right, if any, of persons properly and directly concerned to inspect the documents.

If the basis for withholding this information from public inspection should change in the future such that the information could then be made available for public inspection, you should promptly notify the U.S. Nuclear Regulatory Commission (NRC). You also should understand that the NRC may have cause to review this determination in the future, for example, if the scope of a Freedom of Information Act request includes your information. In all review situations, if the NRC makes a determination adverse to the above, you will be notified of the date of public disclosure, in advance which will be a reasonable time thereafter.

If you have any questions regarding this matter, please contact me at (301) 415-7213 or Wendy.Reed@nrc.gov.

Sincerely,

/RA/

Wendy A. Reed, Chemist Renewals and Materials Branch Division of Spent Fuel Management Office of Nuclear Material Safety and Safeguards Docket No. 72-11 License No. SNM-2510 CAC/EPID Nos. 001028/L-2018-RNW-0005 000993/L-2018-LNE-0004 cc: Rancho Seco Service List Prakash Narayanan

Rancho Seco Service List 3 cc:

Arlen Orchard, Chief Executive Officer Sacramento Municipal Utility District 6201 S Street P.O. Box 15830 Sacramento, CA 95817 1899 Laura Lewis, Chief Legal Officer Sacramento Municipal Utility District 6201 S Street P.O. Box 15830 Sacramento, CA 95817 1899 Steve Lins, Deputy General Counsel, Sacramento Municipal Utility District 6201 S Street P.O. Box 15830 Sacramento, CA 95817 1899 Site Document Control Supervisor Rancho Seco 14440 Twin Cities Road Herald, CA 95638 9799 Commissioners' Office California Energy Commission 1516 Ninth Street (MS 34)

Sacramento, CA 95814 5512 Radiation Program Director California Radiologic Health Branch P.O. Box 997414 (MS 7610)

Sacramento, CA 95899 7414 Sacramento County Board of Supervisors 700 H Street, Suite 2450 Sacramento, CA 95814

ML18126A031 OFC NMSS/DSFM NMSS/DSFM NMSS/DSFM NAME WReed WWheatley via email MRahimi DATE 09/13/18 09/13/18 09/14/18