Nuclear Regulatory Commission March 24, 2021 – Federal Register Recent Federal Regulation Documents

The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its regulations by revising the TN Americas LLC Standardized NUHOMS[supreg] Horizontal Modular Storage System listing within the ``List of approved spent fuel storage casks'' to include Renewed Amendment No. 17 to Certificate of Compliance No. 1004. Because this amendment is subsequent to the renewal of the TN Americas LLC Standardized NUHOMS[supreg] Horizontal Modular Storage System Certificate of Compliance No. 1004 and, therefore, subject to the Aging Management Program requirements of the renewed certificate, it is referred to as ``Renewed Amendment No. 17.'' Renewed Amendment No. 17 revises the certificate of compliance technical specifications to add Heat Load Zoning Configurations 11-13 for the 61BTH Type 2 dry shielded canister and change the maximum assembly heat load from 1.2k W to 1.7 kW. This amendment also includes minor clarifications to the certificate of compliance.

The U.S. Nuclear Regulatory Commission (NRC) is considering issuance of an amendment to Facility Operating License No. NPF-96, issued to Tennessee Valley Authority (TVA), for operation of the Watts Bar Nuclear Plant (Watts Bar or WBN), Unit 2. The proposed amendment would revise the Watts Bar Updated Final Safety Analysis Report (UFSAR) to apply a temperature adjustment to the growth rate calculation used to determine the end-of-cycle distribution of indications of axial outer diameter stress corrosion cracking (ODSCC) at steam generator (SG) tube support plates in support of the Watts Bar, Unit 2 operational assessment. The proposed revision to the UFSAR would apply to Unit 2 only. For this amendment request, the NRC proposes to determine that it involves no significant hazards consideration. Because this amendment request contains sensitive unclassified non- safeguards information (SUNSI), an order imposes procedures to obtain access to SUNSI for contention preparation.