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Enerji ve çevre · 01.05.20241 dk okuma

Final Revision to Branch Technical Position 7-19, Guidance for Evaluation of Defense in Depth and Diversity To Address Common-Cause Failure Due to Latent Design Defects in Digital Instrumentation and Control Systems

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Özet

The U.S. Nuclear Regulatory Commission (NRC) is issuing a final revision to the following section of NUREG-0800, "Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plans: LWR Edition": Branch Technical Position (BTP) 7-19, "Guidance for Evaluation of Defense in Depth and Diversity to Address Common- Cause Failure Due to Latent Design Defects in Digital Instrumentation and Control Systems."

Kaynağın orijinal dili: Federal Register — Nuclear Regulatory CommissionOrijinal duyuruyu açın →

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Enerji ve çevre · 28.08.2026

Southern Nuclear Operating Company; Vogtle Electric Generating Plant Units 1 & 2; Independent Spent Fuel Storage Installation; Exemption

The U.S. Nuclear Regulatory Commission (NRC) has issued a one- time exemption to Southern Nuclear Operating Company (SNC), authorizing Vogtle Electric Generating Plant Units 1 and 2 (Vogtle 1 and 2) to retain a single Neutron Source Assembly (NSA) in its current storage cell within a multi-purpose canister ((MPC-32), serial number MPC-707) at the Vogtle Independent Spent Fuel Storage Installation, in a manner that is inconsistent with the loading restrictions specified in Certificate of Compliance (CoC) No. 1014, Amendment 11, for the HI- STORM 100S Version B dry storage system. The exemption allows the NSA to remain in a peripheral basket cell, contrary to Appendix B, Table 2.1-1, which restricts NSA containing assemblies to designated interior cells. The NRC's determination is based on SNC's safety evaluation and supporting analyses demonstrating that the configuration continues to meet applicable safety requirements for criticality control, shielding, thermal performance, structural integrity, and confinement.

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Enerji ve çevre · 26.08.2026

List of Approved Spent Fuel Storage Casks: TN Americas, LLC Standardized NUHOMS® Horizontal Modular Storage System for Irradiated Nuclear Fuel, Certificate of Compliance No. 1004, Renewed Amendment No. 19

The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its spent fuel regulations by revising the TN Americas, LLC Standardized NUHOMS[supreg] Horizontal Modular Storage System for Irradiated Nuclear Fuel listing within the "List of approved spent fuel storage casks" to include Renewed Amendment No. 19 to Certificate of Compliance (CoC) No. 1004. The NRC is referring to this amendment as "Renewed Amendment No. 19" because it was submitted after the renewal of the TN Americas, LLC Standardized NUHOMS Horizontal Modular Storage System for Irradiated Nuclear Fuel Certificate of Compliance No. 1004 and, therefore, subject to the Aging Management Program requirements of the renewed certificate. Renewed Amendment No. 19 would amend the certificate of compliance to provide for a 61BTH improved basket design using staggered plates similar the 24PTH Type 3 basket approved in CoC 1004 Amendment 18 and similar to the EOS 37PTH and 89BTH baskets approved in CoC 1042. This would simplify construction, reduce weight and improve fabricability. Additional changes are proposed to address editorial corrections, consistency, and terminology clarifications.

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Enerji ve çevre · 28.08.2026

EnergySolutions Services Inc.; Export License Amendment Application

The U.S. Nuclear Regulatory Commission (NRC) is considering approval of an export application, received on June 9, 2026, from EnergySolutions Services Inc. (ESSI). In the application, ESSI seeks to amend and renew an existing license, XW018, authorizing the export of radioactive material to Germany. The NRC is providing notice of the opportunity to comment, request a hearing, and petition to intervene on ESSI's application. This action will renew the existing export license for an additional 10 years (to expire on December 31, 2036) and amend the existing export license to update the licensee's address to 151 Lafayette Drive, Oak Ridge, Tennessee 37830.

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Enerji ve çevre · 26.08.2026

STP Nuclear Operating Company; South Texas Project, Unit 1; License Amendment Application

The U.S. Nuclear Regulatory Commission (NRC, the Commission) is considering issuance of an amendment to Renewed Facility Operating License No. NPF-76, issued to STP Nuclear Operating Company (STPNOC); Constellation South Texas, LLC; City Public Service Board of San Antonio; and City of Austin, Texas, for operation of South Texas Project, Unit 1 (STP). The proposed license amendment would, if granted, make a one-time exigent change to the technical specifications (TS) to extend the allowed outage time (AOT) for TS 3.7.1.7, "Main Feedwater System". This proposed amendment is being requested to facilitate repairs to the Unit 1 train D main feedwater isolation valve (MFIV). This proposed amendment is being requested under exigent circumstances pursuant to NRC regulations.

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Enerji ve çevre · 01.10.2026

SMR, LLC; Palisades SMR, LLC; Pioneer Units 1 and 2; Phased Construction Permit Application-Limited Work Authorization

The U.S. Nuclear Regulatory Commission (NRC) is providing public notice each week, for four consecutive weeks, beginning October 1, 2026, of receipt and availability of the first part of a phased construction permit application, including a limited work authorization (LWA) request, from SMR, LLC, on behalf of Palisades SMR, LLC, a wholly-owned subsidiary of Holtec International (collectively, Holtec), for a dual-unit SMR-300 plant located at the Palisades Energy Center (PEC) in Covert, Michigan. The units are individually named Pioneer Unit 1 and Pioneer Unit 2. This is the first of four consecutive weekly notifications.

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Enerji ve çevre · 29.09.2026

Biweekly Notice; Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations

Pursuant to section 189a.(2) of the Atomic Energy Act of 1954, as amended (the Act), the U.S. Nuclear Regulatory Commission (NRC) is publishing this regular biweekly notice. The Act requires the Commission to publish notice of any amendments issued, or proposed to be issued, and grants the Commission the authority to issue and make immediately effective any amendment to an operating license or combined license, as applicable, upon a determination by the Commission that such amendment involves no significant hazards consideration (NSHC), notwithstanding the pendency before the Commission of a request for a hearing from any person.

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