Report a Safety Concern
Search

The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

Home NRC Library Document Collections Events, Reports Associated with Preliminary Notification Reports

Preliminary Notification (PN) Reports for 2014

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

This page includes links to files in non-HTML format. See Plugins, Viewers, and Other Tools for more information.

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

To top of page
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

To top of page
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

To top of page
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

To top of page
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

To top of page
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

To top of page
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

To top of page
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

To top of page
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

To top of page

Page Last Reviewed/Updated Tuesday, March 9, 2021