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Energía y medio ambiente · 15/4/20131 min de lectura

Guidance on the Treatment of Uncertainties Associated With PRA in Risk-Informed Decisionmaking

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Resumen

The Nuclear Regulatory Commission has issued for public comment a document entitled: NUREG-1855, Revision 1, "Guidance on the Treatment of Uncertainties Associated with PRA in Risk-Informed Decisionmaking," Draft Report for Comment.

Idioma original de la fuente: Federal Register — Nuclear Regulatory CommissionAbrir el comunicado original →

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Energía y medio ambiente · 21/8/2026

Draft Interim Staff Guidance: Evaluations of Risk Assessments for Risk-Informed Decision-Making for Regulatory Applications

The U.S. Nuclear Regulatory Commission (NRC) is soliciting public comment on its draft Interim Staff Guidance (ISG), OAR/DARP-ISG- 2026-XX, "Evaluations of Risk Assessments for Risk-Informed Decision- Making for Regulatory Applications." If finalized, this ISG will provide guidance to the staff for reviewing systematic risk assessment methods, including probabilistic risk assessments (PRAs) and other systematic risk evaluations (SREs). This ISG will supplement existing guidance to facilitate the staff's understanding of the uses of risk information in regulatory applications and application of principles of risk-informed decision-making.

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Energía y medio ambiente · 21/8/2026

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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Energía y medio ambiente · 10/9/2026

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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Energía y medio ambiente · 26/8/2026

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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Energía y medio ambiente · 24/8/2026

Arizona Public Service Company; Palo Verde Nuclear Generating Station, Units 1, 2, and 3; Indirect Transfer of Control of Licenses

The U.S. Nuclear Regulatory Commission (NRC, the Commission) is issuing an order approving the application dated April 24, 2026, filed by Arizona Public Service Company (APS), on behalf of Public Service Company of New Mexico (PNM), Troy ParentCo LLC (Troy ParentCo), and their corporate affiliates (together, Applicants). The application sought NRC consent to the indirect transfer of control of PNM's co- ownership of the Renewed Facility Operating License Nos. NPF-41, NPF- 51, and NPF-74 for the Palo Verde Nuclear Generating Station (Palo Verde), Units 1, 2, and 3, respectively, as well as the associated general license for the Palo Verde Independent Spent Fuel Storage Installation (ISFSI) (together, the facility). No physical changes or operational changes to the facility were proposed in the application.

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Energía y medio ambiente · 29/9/2026

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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