United States Nuclear Regulatory Commission - Protecting People and the Environment

Preliminary Notification (PN) Reports for 2014

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April
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

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
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 Wednesday, April 16, 2014