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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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Preliminary Notification (PN) Reports for 2014

| January | February | March | Apil | May | June | July | August | October | November | December |

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December
PNO-III-14-012A 12/29/2014 Northern States Power Co.: Shutdown of Prairie Island Unit 1 due to Increasing Trend In Reactor Coolant System Leakage – (Update)
PNO-III-14-012 12/12/2014 Northern States Power Co.: Shutdown of Prairie Island Unit 1 due to Increasing Trend In Reactor Coolant System Leakage

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November
PNO-II-14-008C 11/13/2014 Honeywell Specialty Chemicals/Honeywell International, Inc.: Honeywell Metropolis Works Shut Down Due to UF6 Leak - (Update)
PNO-III-14-010A 11/12/2014 Indiana Michigan Power Company: D.C. Cook Dual Unit Manual Trip resulting in a Shutdown for greater than 72 Hours on Unit 2 - (Update)
PNO-III-14-010 11/04/2014 Indiana Michigan Power Company: D.C. Cook Dual Unit Manual Trip resulting in a Shutdown for greater than 72 Hours on Unit 2

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October
PNO-II-14-008A 10/31/2014 Honeywell Specialty Chemicals/Honeywell International, Inc.: Honeywell Metropolis Works Shut Down Due to UF6 Leak - (Update)
PNO-III-14-009A 10/27/2014 FirstEnergy Nuclear Operating Company (Perry Nuclear Power Plant): Unplanned Shutdown Greater Than 72 Hours due to a Loss of Feedwater – (Update)
PNO-II-14-008 10/27/2014 Honeywell Specialty Chemicals/Honeywell International, Inc.: Honeywell Metropolis Works Shut Down Due to UF6 Leak
PNO-III-14-009 10/24/2014 FirstEnergy Nuclear Operating Company (Perry Nuclear Power Plant): Unplanned Shutdown Greater Than 72 Hours due to a Loss of Feedwater

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August
PNO-III-14-008A 08/19/2014 Exelon Generation Company/LaSalle County Station, Unit 2: Shutdown Greater than 72 Hours Following a Reactor Scram – (Update)
PNO-III-14-008 08/07/2014 Exelon Generation Company/LaSalle County Station, Unit 2: Shutdown Greater than 72 Hours Following a Reactor Scram
PNO-II-14-006A 08/06/2014 Tennessee Valley Authority (TVA)/Browns Ferry Unit 2: Shutdown Greater than 72 Hours due to Increased Primary Coolant Leakage – (Update)
PNO-II-14-006 08/05/2014 Tennessee Valley Authority (TVA)/Browns Ferry Unit 2: Shutdown Greater than 72 Hours due to Increased Primary Coolant Leakage
PNO-II-14-007 08/04/2014 Honeywell Specialty Chemicals/Honeywell International, Inc.: Bargaining Unit Lockout at Honeywell - Metropolis Works

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July
PNO-I-14-003 07/29/2014 Dominion Nuclear Connecticut, Inc./Millstone Power Station Units 2: Shutdown Greater than 72 Hours due to a Technical Specification Required Shutdown for the Turbine Driven Auxiliary Feedwater Pump
PNO-II-14-005A 07/24/2014 South Carolina Electric & Gas/V.C. Summer, Unit 1: Shutdown Greater Than 72 Hours Due to Leaking Pressurizer Safety Valve – (Update)
PNO-II-14-005 07/14/2014 South Carolina Electric & Gas/V.C. Summer, Unit 1: Shutdown Greater Than 72 Hours Due to Leaking Pressurizer Safety Valve
PNO-III-14-007 07/09/2014 FirstEnergy Nuclear Operating Company/Davis-Besse Nuclear Power Station: Unusual Event Due To Smoke Detector Alarm In Containment Building

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June
PNO-III-14-006 06/11/2014 Execon Generation Co./Dresden, Unit 2 and Unit 3: Report of Tritium at Dresden Sewage Treatment Plant
PNO-I-14-002A 06/02/2014 Dominion Nuclear Connecticut, Inc./Millstone Power Station Units 2 & 3: Unusual Event Declared Due to Loss of Offsite Power and Dual Reactor Trips – (Update)
May
PNO-I-14-002 05/28/2014 Dominion Nuclear Connecticut, Inc./Millstone Power Station Units 2 & 3: Unusual Event Declared Due to Loss of Offsite Power and Dual Reactor Trips

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April
PNO-III-14-005A 04/29/2014 Exelon Generation Co./Dresden Unit 2: Shutdown due to Main Transformer Damage – (Update)
PNO-III-14-003A 04/28/2014 FirstEnergy Nuclear Operating Company/Davis-Besse: Shield Building Restoration – (Update)
PNO-III-14-005 04/15/2014 Exelon Generation Co./Dresden Unit 2: Shutdown due to Main Transformer Damage
PNO-II-14-004 04/07/2014 Carolina Power & Light Co./Robinson Unit 2: Shutdown Due to Steam Generator Tube Leak – (Update)
PNO-III-14-004 04/03/2014 FirstEnergy Nuclear Operating Company/Perry Nuclear Power Plant: Notification of Unusual Event Due to Toxic Chemical Leak

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March
PNO-II-14-002A 03/14/2014 Entergy Nuclear Operations, Inc./Palisades: Control Rod Drive Mechanism Housing Flaws
PNO-II-14-004 03/10/2014 Carolina Power & Light Co./Robinson Unit 2: Shutdown Due to Steam Generator Tube Leak
February
PNO-III-14-003 02/19/2014 FirstEnergy Nuclear Operating Company/Davis-Besse: Shield Building Voids

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January
PNO-III-14-001A 02/07/2014 Northern States Power Co./Monticello: Shutdown Due To Reactor Coolant System (RCS) Pressure Boundary Leakage In Excess Of Technical Specification Limits – (Update)
PNO-III-14-002 01/30/2014 Entergy Nuclear Operations, Inc.: Palisades Control Rod Drive Mechanism Housing Flaws
PNO-I-14-001 01/27/2014 Constellation Energy Nuclear Group, LLC/Calvert Cliffs Nuclear Power Plant: Dual Unit Trip Following the Loss of the '21' 13 kV Bus
PNO-II-14-001 01/21/2014 Progress Energy Carolinas, Inc. (PEC)/Harris Unit 1: Shutdown and Alert Declared due to Fire
PNO-III-14-001 01/21/2014 Northern States Power Co./Monticello: Shutdown Due To RCS Pressure Boundary Leakage In Excess Of Technical Specification Limits

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Page Last Reviewed/Updated Tuesday, March 09, 2021

Page Last Reviewed/Updated Tuesday, March 09, 2021