Secondary Containment is the last barrier to stop the release of radiological material. It is typically called the Reactor Building
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| | Site | Start date | Title | Description |
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| IR 05000336/2024003 | Millstone
Calvert Cliffs | 7 November 2024 | Integrated Inspection Report 05000336/2024003 and 05000423/2024003 and Apparent Violation and Independent Spent Fuel Storage Installation Inspection Report 07200008/2024001 | | | IR 05000298/2024003 | Cooper | 5 November 2024 | Integrated Inspection Report 05000298/2024003 | | | ML24151A384 | Limerick | 31 October 2024 | – Issuance of Amendment Nos. 264 and 226 Support to Digital Modernization Project Installation (EPID L-2023-LLA-0025) and Exemption from the Requirements of 10 CFR 50.62 | | | ML22199A257 | | 30 October 2024 | DG-5075 - Establishing Cybersecurity Programs for Commercial Nuclear Plants Licensed Under 10 CFR Part 53 | | | 05000259/LER-2024-001-02, Secondary Containment Isolation Valve Inoperable Due to Mechanical Failure | Browns Ferry | 28 October 2024 | Secondary Containment Isolation Valve Inoperable Due to Mechanical Failure | | | LR-N24-0062, Proposed Changes to Enclosure 2 Volume 13, ITS Section 3.8 Electrical Power Systems, of the Improved Technical Specification Conversion License Amendment Request | Hope Creek | 17 October 2024 | Proposed Changes to Enclosure 2 Volume 13, ITS Section 3.8 Electrical Power Systems, of the Improved Technical Specification Conversion License Amendment Request | | | ML24276A133 | FitzPatrick | 17 October 2024 | Issuance of Amendment No. 357 Revise Technical Specifications to Adopt TSTF-529, Clarify Use and Application Rules, Revision-4, and Administrative Changes | | | 05000423/LER-2024-001, Loss of Safety Function and Condition Prohibited by Technical Specifications for Loss of Secondary Containment Boundary | Millstone | 14 October 2024 | Loss of Safety Function and Condition Prohibited by Technical Specifications for Loss of Secondary Containment Boundary | | | ENS 57422 | Millstone | 10 October 2024 14:02:00 | Secondary Containment Boundary Inoperable | The following information was provided by the licensee via phone and email:
At 0902 EST, on 10/10/2024, with Millstone Unit 3 in mode 1 at 100 percent power, it was discovered that the secondary containment boundary was inoperable when the latch that secured a hatch that was part of the secondary containment boundary was not functional. The latch was repaired by 1115, on 10/10/2024, and the secondary containment boundary was declared operable at 1200, on 10/10/2024. The initial assessment of reportability concluded that an immediate report was not required. However, upon additional review, it has been determined that because the secondary containment boundary is a single-train system that performs a safety function, an 8-hour report was required in accordance with 10 CFR 50. 72 (b)(3)(v)(C) and (D).
This report should have been made on 10/10/2024 and is late.
There has been no impact to Unit 2, and Unit 3 continues to operate in mode 1 at 100 percent power.
There is no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. | | NLS2024065, 10 CFR 50.59(d)(2) and 10 CFR 72.48(d)(2) Summary Report | Cooper | 7 October 2024 | 10 CFR 50.59(d)(2) and 10 CFR 72.48(d)(2) Summary Report | |
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