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Energia e ambiente · 03/02/19941 min de leitura

Radiation Protection Requirements; Amended Definitions and Criteria

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Resumo

The Nuclear Regulatory Commission (NRC) proposes to amend its regulations concerning radiation protection requirements. The proposed rule would: Delete the definition of ``Controlled area'' to make it clear that any area to which access is restricted for the purpose of radiological protection is a restricted area as defined in the regulation, revise the definition of ``Occupational dose'' to delete reference to the ``Restricted area,'' revise the definition of unrestricted area to be consistent with the deletion of controlled area, revise the provision entitled ``Instruction to Workers,'' so that radiation protection training will be provided to all persons with the potential to be occupationally exposed and restore a provision to provide that whenever licensees are required to report exposures of individual members of the public to the NRC, then those individuals are to receive copies of the report.

Idioma original da fonte: Federal Register — Nuclear Regulatory CommissionAbrir o comunicado original →

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Energia e ambiente · 10/09/2026

In Situ Recovery Monitoring and Decommissioning Timeliness

The U.S. Nuclear Regulatory Commission (NRC) proposes to amend its regulations that govern the licensing of uranium mills and the disposition of tailings and waste that arise from the extraction and milling of uranium by issuing risk-informed requirements for groundwater protection at uranium in situ recovery (ISR) facilities. The NRC's current regulations are focused on conventional uranium milling and do not expressly address uranium extraction by the ISR process. Additionally, NRC proposes to amend its regulations that govern decommissioning timeliness for all licensees to provide additional flexibility for licensees to delay the initiation of decommissioning activities in situations where safety would not be impacted.

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Energia e ambiente · 01/09/2026

Biweekly Notice;

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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Energia e ambiente · 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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Energia e ambiente · 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 amending its spent fuel storage 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 Amendment No. 19 to Certificate of Compliance (CoC) No. 1004. Amendment No. 19 revises 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 will simplify construction, reduce weight and improve fabricability. Additional changes are proposed to address editorial corrections, consistency, and terminology clarifications. 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.

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Energia e ambiente · 25/08/2026

SMR, LLC; Palisades SMR, LLC; Pioneer Units 1 and 2; Environmental Assessment and Finding of No Significant Impact

The U.S. Nuclear Regulatory Commission (NRC) is issuing an environmental assessment (EA) and finding of no significant impact (FONSI) for an exemption requested by SMR, LLC on behalf of Palisades SMR, LLC (Palisades SMR), associated with certain excavation support activities for the proposed dual-unit SMR-300 plant, Pioneer Units 1 and 2, at the Palisades Energy Center in Covert, Michigan. Specifically, Palisades SMR is requesting an exemption, pursuant to NRC regulations, to allow for construction of support of excavation (SOE) walls during SMR-300 excavation and prior to issuance of a Limited Work Authorization (LWA), if approved. Based on the analyses presented in the EA, the NRC staff determined that there would be no significant environmental impacts associated with granting the requested exemption.

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Energia e ambiente · 21/08/2026

Draft Regulatory Guide: Assessing Public Health Risk Associated With Chemical Hazards of Licensed Material

The U.S. Nuclear Regulatory Commission (NRC) is issuing for public comment a draft Regulatory Guide (DG), DG-1444, proposed Regulatory Guide (RG) 1.264, "Assessing Public Health Risk Associated with Chemical Hazards of Licensed Material." This DG describes a methodology that is acceptable to the staff of the NRC to meet regulatory requirements assessing public health risk associated with chemical hazards of licensed material.

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