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… information. July PNO-III-23-001A 07/21/2023 Monticello Nuclear Plant: Update to Preliminary Notification of Event … Occurrence – PNO-III-23-001 June PNO-III-23-002B 06/08/2023 Prairie Island Update to PNO-III-23-002 Declaration of an Unusual …

… June PNO-III-15-008 06/09/2015 Northern States Power Co.: Prairie Island Unit 2 Shutdown due to Trip of Main Power Turbine … Diesel Generator May PNO-I-15-002A 05/27/2015 Entergy Nuclear Operations, Inc.: ( Update ) – Indian Point Nuclear …

… Unit 1 - 100 Percent Power PNO-I-09-007 12/21/2009 Dominion Nuclear Connecticut: Millstone Unit 3 Reactor Trip and … 11/24/2009 Exelon Generation Company, LLC: Three Mile Island Unit 1 - Contamination Event (Update) PNO-II-09-006 … Due to Feedpump Issues May PNO-III-09-003A 05/22/2009 Prairie Island Unit 1: Unplanned Unit 1 Shutdown (Update) …

… for more information. December PNO-III-07-016 12/26/2007 Nuclear Management Company: Prairie Island - Unplanned Unit 1 Shutdown Greater Than 72 Hours …

… December PNO-I-11-004A 12/16/2011 Constellation Energy Nuclear Group, LLC: Nine Mile Point Unit 2 Technical … PNO-III-11-013A 10/20/2011 Northern States Power Company: Prairie Island Unit 2 Unplanned Shutdown for Greater than 72 Hours - …

… 12/29/2014 Northern States Power Co.: Shutdown of Prairie Island Unit 1 due to Increasing Trend In Reactor Coolant … 6 Leak - ( Update ) PNO-III-14-009A 10/27/2014 FirstEnergy Nuclear Operating Company (Perry Nuclear Power Plant): …

… Field November PNO-III-12-017 11/29/2012 FirstEnergy Nuclear Operating Company, Perry Nuclear Power Plant: … States Power Company: Notification of Unusual Event at Prairie Island October PNO-I-12-007 10/31/2012 Exelon Generating …

… 11/13/2006 Nebraska Public Power District/Cooper Nuclear Station:Small Fire and Notification of Unusual Event … PNO-III-06-003 02/06/2006 Nuclear Management Company/Prairie Island: Technical Specification Required Shutdown of Prairie …

… Pump Room PNO-III-08-012 10/27/2008 Quad Cities Nuclear Power Plant: Quad Cities Notice of Unusual Even Due … Leaking Control Rod Drive Seals PNO-III-08-007A 08/04/2008 Prairie Island: Unplanned Unit 1 Shutdown Greater than 72 …

… After Reactor Trip PNO-II-05-012 11/09/2005 Southern Nuclear Operating Company, Inc.: Farley Nuclear Plant Unit 2 … Site PNO-III-05-009 04/20/2005 Nuclear Management Company/Prairie Island: Technical Specification Required Shutdown of Prairie …