Preliminary Notification (PN) Reports for 2009
January • February • March • April • May • June• July • August • September • October • November • December
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December | ||
PNO-III-09-015 | 12/23/2009 | Indiana Michigan Power Company: D.C. Cook Unit 1 - 100 Percent Power |
PNO-I-09-007 | 12/21/2009 | Dominion Nuclear Connecticut: Millstone Unit 3 Reactor Trip and Shutdown Greater Than 72 Hours |
PNO-III-09-014 | 12/18/2009 | Indiana Michigan Power Company: D.C. Cook Unit 1 Restart |
November | ||
PNO-I-09-006 | 11/24/2009 | Exelon Generation Company, LLC: Three Mile Island Unit 1 - Contamination Event (Update) |
PNO-II-09-006 | 11/24/2009 | South Carolina Electric & Gas Company: Fire Within the Protected Area of V. C. Summer Nuclear Station |
PNO-III-09-013 | 11/23/2009 | Donald C. Cook Nuclear Plant: D. C. Cook Unit 1 Mode Change Following 14 Months Forced Outage |
PNO-III-09-009A | 11/12/2009 | Detroit Edison Company: Fermi 2 Unplanned Shutdown for Greater Than 72 Hours to Repair Hydrogen In-Leakage - Update |
PNO-III-09-012A | 11/03/2009 | FirstEnergy Nuclear Operating Co.: Manual Reactor Scram During Planned Shutdown (Update) |
October | ||
PNO-III-09-011A | 10/26/2009 | Exelon Generation Company: Clinton Power Station Unplanned Shutdown Greater than 72 Hours - Update |
PNO-III-09-012 | 10/19/2009 | FirstEnergy Nuclear Operating Co.: Manual Reactor Scram During Planned Shutdown |
PNO-III-09-011 | 10/16/2009 | Exelon Generation Company: Clinton Power Station Unplanned Shutdown Greater Than 72 Hours |
PNO-IV-09-005 | 10/14/2009 | Basin Electric Power Cooperative: Potential Overexposures to Members of the Public |
PNO-III-09-010 | 10/15/2009 | Exelon Generation Co.: Lasalle Unit 2 Unplanned Shutdown Greater than 72 hours |
PNO-III-09-009 | 10/01/2009 | Detroit Edison Company: Fermi 2 Unplanned Shutdown for Greater Than 72 Hours to Repair Hydrogen In-Leakage |
September | ||
There were no Preliminary Notifications Reports for September in 2009. | ||
August | ||
PNO-IV-09-004A | 08/31/2009 | Energy Northwest: Columbia Generating Station Startup Following an Automatic Reactor Scram Due to a Turbine Trip and Declaration of an Unusual Event Due to Possible Toxic Gas (Update) |
PNO-III-09-008A | 08/20/2009 | Exelon Generation Co.: Lasalle Unit 2 Unplanned Shutdown Greater than 72 hours (Update) |
PNO-III-09-008 | 08/18/2009 | Exelon Generation Co.: Lasalle Unit 2 Unplanned Shutdown Greater than 72 hours |
PNO-III-09-006A | 08/10/2009 | Donald C. Cook Nuclear Plant: D.C. Cook Unit 2 Forced Shutdown for Greater than 72 hours to Repair Reactor Coolant Pump Seal (Update) |
PNO-IV-09-004 | 08/05/2009 | Energy Northwest: Columbia Generating Station Unusual Event and Automatic Reactor Scram Due to Fire Resulting in Possible Toxic Gas |
PNO-III-09-007A | 08/05/2009 | Braidwood Nuclear Station: Unusual Event at Braidwood Unit 2 Due to Loss of Offsite Power; Unit will Remain Shut Down for More Than 72 Hours (Update) |
PNO-II-09-004 | 08/03/2009 | Honeywell International, Inc.: Vehicle Accident Involving Uranium Hexafluoride Shipment |
July | ||
PNO-III-09-007 | 07/31/2009 | Braidwood Nuclear Station: Unusual Event at Braidwood Unit 2 Due to Loss of Offsite Power; Unit will Remain Shut Down for More Than 72 Hours |
PNO-III-09-006 | 07/28/2009 | Donald C. Cook Nuclear Plant: D.C. Cook Unit 2 Forced Shutdown for Greater Than 72 Hours to Repair Reactor Coolant Pump Seal |
PNO-I-09-004A | 07/27/2009 | Dominion Nuclear Connecticut: Updated - Millstone Unit 2 Reactor Trip and Shutdown Greater Than 72 Hours |
PNO-I-09-005A | 07/17/2009 | Exelon Generation Company, LLC: Updated - Oyster Creek Reactor Trip and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours |
PNO-II-09-003 | 07/17/2009 | USEC - Portsmouth Gaseous Diffusion Plant: Alert Declared Based on Fire Lasting Longer than 15 Minutes |
PNO-II-09-002 | 07/16/2009 | B&W Nuclear Operations Group: Alert Declared Based on Loss of Controlled Parameters for Criticality Safety |
PNO-I-09-005 | 07/15/2009 | Exelon Generation Company, LLC: Oyster Creek Reactor Trip and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours |
PNO-I-09-004 | 07/03/2009 | Dominion Nuclear Connecticut: Millstone Unit 2 Reactor Trip and Shutdown Greater Than 72 Hours |
June | ||
PNO-III-09-005A | 06/29/2009 | FirstEnergy Nuclear Operating Company, Davis-Besse: Transitory Alert Due to Electric Device Failure (Update) |
PNO-III-09-005 | 06/26/2009 | FirstEnergy Nuclear Operating Company, Davis-Besse: Transitory Alert Due to Electric Device Failure |
PNO-III-09-004 | 06/10/2009 | Exelon Generation Company, Dresden 2 and 3: Tritium Leak |
PNO-I-09-003A | 06/08/2009 | Entergy Nuclear Operations, Inc.: Indian Point Unit 3 Shutdown Due to Feedpump Issues (Update) |
PNO-I-09-003 | 06/01/2009 | Entergy Nuclear Operations, Inc.: Indian Point Unit 3 Shutdown Due to Feedpump Issues |
May | ||
PNO-III-09-003A | 05/22/2009 | Prairie Island Unit 1: Unplanned Unit 1 Shutdown (Update) |
PNO-III-09-003 | 05/20/2009 | Prairie Island Unit 1: Prairie Island Unplanned Unit 1 Shutdown |
PNO-I-09-002A | 05/04/2009 | Exelon Generating Company, LLC, Oyster Creek Nuclear Generating Station: Shutdown Greater Than 72 Hours: Manual Reactor Scram Following Loss of Cooling Tower to Main Transformer - Update |
April | ||
PNO-I-09-002 | 04/27/2009 | Exelon Generating Company, LLC, Oyster Creek Nuclear Generating Station: Shutdown Greater than 72 Hours: Manual Reactor Scram Following Loss of Cooling to Main Transformer |
PNO-III-09-002 | 04/20/2009 | Kewaunee Power Station, Dominion Energy Kewaunee, Inc.: Unplanned Shutdown Due to Main Steam Pressure Instruments Not Calibrated as Required |
March | ||
PNO-IV-09-003 | 03/12/2009 | Southern California Edison Company, San Onfore Nuclear Generating Station: Contract Fire Watch Employee Terminated for use of a Prohibited Substance in the Site Protected Area |
PNO-IV-09-002A | 03/02/2009 | AmerenUE, Inc., Callaway Plant: Plant Shutdown and Subsequent Declaration of Unusual Event Associated with Main Generator Hydrogen Leakage (Update) |
February | ||
PNO-III-09-001A | 02/23/2009 | Palisades Nuclear Plant, Entergy Nuclear Operations, Inc.: Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rod Drive Seals (Update) |
PNO-IV-09-002 | 02/19/2009 | AmerenUE, Inc., Callaway Plant: Plant Shutdown and Subsequent Declaration of Unusual Event Associated with Main Generator Hydrogen Leakage |
PNO-III-09-001 | 02/18/2009 | Palisades Nuclear Plant, Entergy Nuclear Operations, Inc.: Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rod Drive Seals |
PNO-IV-09-001A | 02/10/2009 | Entergy Operating, Inc., Arkansas Nuclear One - Unit 1: Unit 1 trip and Fire Associated With Main Generator (Update) |
PNO-IV-09-001 | 02/09/2009 | Entergy Operating, Inc., Arkansas Nuclear One - Unit 1: Unit 1 trip and Fire Associated With Main Generator |
PNO-I-09-001A | 02/05/2009 | Unusual Event and Automatic Reactor Scram due to a Fire in the M1A Main Transformer (Update) |
PNO-I-09-001 | 02/01/2009 | Unusual Event and Automatic Reactor Scram due to a Fire in the M1A Main Transformer |
January | ||
There were no Preliminary Notifications Reports for January in 2009. | ||