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Energia i regulacje · 27.04.2006

Potentially Nonconforming HEMYC and MT Fire Barrier Configurations

The U.S. Nuclear Regulatory Commission (NRC) has issued Generic Letter (GL) 2006-03 to all holders of operating licenses for nuclear power reactors, except those who have permanently ceased operation and have certified that fuel has been removed from the reactor vessel. The NRC is issuing this GL to: (1) Request that addressees evaluate their facilities to confirm compliance with the existing applicable regulatory requirements in light of the information provided in this GL and, if appropriate, take additional actions. Specifically, although Hemyc and MT fire barriers in nuclear power plants (NPPs) may be relied on to protect electrical and instrumentation cables and equipment that provide safe shutdown capability during a fire, 2005 NRC testing has revealed that both materials failed to provide the protective function intended for compliance with existing regulations, for the configurations tested using the thermal acceptance criteria from the National Fire Protection Association (NFPA) Standard 251, "Standard Methods of Fire Tests of Building Construction and Materials." The NRC staff applied the supplemental guidance in GL 86-10, Supplement 1, "Fire Endurance Test Acceptance Cri

Source: Federal Register — Nuclear Regulatory CommissionOpen original release →
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Energia i regulacje · 10/8/2026

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 second of four consecutive weekly notifications.

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Energia i regulacje · 10/1/2026

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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Energia i regulacje · 9/29/2026

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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Energia i regulacje · 9/11/2026

Virginia Electric and Power Company, (Doing Business as Dominion Energy Virginia); North Anna Site; Early Site Permit Renewal Application

The U.S. Nuclear Regulatory Commission (NRC or Commission) is considering an application for the renewal of Early Site Permit (ESP) No. ESP-003, which allows Virginia Electric and Power Company (doing business as Dominion Energy Virginia) to reference ESP-003 in an application for a construction permit (CP) or combined license (COL) at the North Anna ESP site during the period ESP-003 remains valid. The renewed permit, if approved, would extend the expiration date by an additional 20 years beyond the period specified in the current permit. The location for the North Anna ESP site is in Louisa County, Virginia, and the current ESP-003 expires on November 27, 2027. This notice provides the public an opportunity to request a hearing and petition for leave to intervene with respect to the renewal application.

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