Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

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Information Notice No. 79-27, Steam Generator Tube Ruptures at Two PWR Facilities

… . SSINS No.: 6870 Accession No.: 7910250488 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND … 16, 1979 Page 4 of 9 Event of October 2, 1979 at the Prairie Island 1 Nuclear Power Plant The second event occurred on …

Information Notice No. 83-24: Loose Parts in the Secondary Side of Steam Generators at Pressurized Water Reactors

… Water Reactors … SSINS No.: 6835 IN 83-24 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND … loose parts related tube rupture events at R. E. Ginna and Prairie Island 1, respectively. As a result of these events, the …

Staff Recommended Actions Stemming from NRC Integrated Program for the Resolution of Unresolved Safety Issues Regarding Steam Generator Tube Integrity (Generic Letter No. 85-02)

… Tube Integrity (Generic Letter No. 85-02) … UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555 April … SGTR events; Point Beach 1 in 1975; Surry 2 in 1976; Prairie Island 1 in 1979; and Ginna in 1982. A number of potential …

Information Notice No. 91-45: Supplement 1:Possible Malfunction ofWestinghouse ARD, BFD, and NBFD Relays, and A200 DC and DPC 250 Magnetic Contactors

… and A200 DC and DPC 250 Magnetic Contactors … UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR … 19, 1993, Northern States Power Company, the licensee for Prairie Island Nuclear Generating Plant conducted a monthly …

Generic Technical Activity A-12 Fracture Toughness (Generic Letter 80-46)

… be forwarded to Mr. Richard Snaider, Generic Issues Branch, Nuclear Regulatory Commission, Washington, D.C. 20555, by … 1 and 2: 12-inch diameter A-53 Schedule 100 pip columns. J. Prairie Island Units 1 and 2: 250 CYM 0.5-inch diameter "heli- coil …

Information Notice No. 84-18: Stress Corrosion Cracking Water Reactor Systems

… Reactor Systems … SSINS No.: 6835 IN 84-18 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND … caused by concurrent maintenance activities. At Three Mile Island Unit 1, during the extended shutdown caused by the … 1981, while transferring spent fuel in the storage pool for Prairie Island, the top nozzle for one fuel assembly …