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Preliminary Notification (PN) Reports for 2005

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December
PNO-III-05-016D 03/15/2006 Braidwood/Exelon Generation Co.: Tritium Contamination Issues (4th Update)
PNO-III-05-016C 02/03/2006 Exelon Generation Co. Braidwood: Potential Off-Site Migration of Tritium Contamination (3rd Update)
PNO-III-05-016B 01/18/2006 Braidwood 1 and 2: Potential Off-Site Migration of Tritium Contamination (2nd Update)
PNO-I-05-031 12/29/2005 Cardinal Health: Agreement State Report - Transportation Accident Involving Used Technetium 99M Syringes
PNO-III-05-017 12/21/2005 Byron 1 and 2: Potential Gunshot Injury to a Site Employee
PNO-I-05-030 12/20/2005 ABB Prospects, Inc.: Radioactive Waste Shipment Vehicle Accident (Possible Media Interest)
PNO-IV-05-018A 12/20/2005 Iris NDT: Update - Radiographer's Dose Exceeds Regulatory Limits
PNO-IV-05- 017B 12/20/2005 ProTechnics, Division of Core Laboratories: Followup on Lost or Missing Radioactive Material - Update
PNO-II-05-013A 12/19/2005 Update-Vogtle Electric Generating Plant, Unit 2: Shutdown to Repair Residual Heat Removal Pipe Leak
PNO-I-05-029A 12/15/2005 Froehling & Robertson, Inc.: Portable Density Gauge Recovered and Secured
PNO-I-05-029 12/12/2005 Froehling & Robertson, Inc.: Portable Density Gauge Reported Missing
PNO-II-05-013 12/12/2005 Vogtle Electric Generating Plant, Unit 2: Shutdown to Repair RHR Pipe Leak
PNO-III-05-016A 12/07/2005 Braidwood 1 and 2: Potential Off-Site Migration of Tritium Contamination (Update)
PNO-III-05-016 12/01/2005 Braidwood 1 and 2: Potential Off-Site Migration of Tritium Contamination

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November
PNO-IV-05-018 11/23/2005 Iris NDT: Radiographer's Dose Exceeds Regulatory Limits
PNO-IV-05- 017A 11/21/2005 ProTechnics, Division of Core Laboratories: Followup on Lost or Missing Radioactive Material Update
PNO-IV-05-017 11/15/2005 ProTechnics, Division of Core Laboratories: Followup on Lost or Missing Radioactive Material
PNO-III-05-015 11/09/2005 DC Cook/Indiana Michigan Power Company: Special Inspection of Electrical Problems After Reactor Trip
PNO-II-05-012 11/09/2005 Southern Nuclear Operating Company, Inc.: Farley Nuclear Plant Unit 2 Loss of All Main Control Board Annunciator Power
PNO-I-05-028 11/03/2005 Connecticut Yankee Atomic Power Company (Haddam Neck): Haddam Neck Report of Spent Fuel Pool Leak
PNO-II-05-011 11/01/2005 Florida Power and Light Company: Notification of Unusual Event

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October
PNO-II-05-010 10/31/2005 Southern Nuclear Company: Notification of Unusual Event
PNO-II-05-009A 10/24/2005 Florida Power and Light Company: Notification of Unusual Event
PNO-II-05-008A 10/24/2005 Florida Power and Light Company: Notification of Unusual Event
PNO-II-05-009 10/24/2005 Florida Power and Light Company: Notification of Unusual Event
PNO-II-05-008 10/24/2005 Florida Power and Light Company: Notification of Unusual Event
PNO-IV-05-016 10/13/2005 Palo Verde Nuclear Generating Station - Technical Specification Required Shutdown of Palo Verde Units 2 and 3
PNO-IV-05-015 10/05/2005 Palo Verde Nuclear Generating Station, Unit 3, Shutdown to Repair Reactor Coolant Pump Oil Seal
PNO-IV-05-014 10/04/2005 Department of the Army, Panoramic Irradiator Sealed Source Stuck in Unshielded Position

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September
PNO-II-05-007 09/27/2005 Framatome Advanced Nuclear Power (F-ANP), Inc.: Overturned Trailer Transporting Radioactive Material
PNO-IV-05-013A 09/26/2005 Waterford-3, River Bend Station, South Texas Project: NRC Exits Monitoring Mode for Hurricane Rita
PNO-IV-05-013 09/23/2005 Waterford-3, River Bend Station, South Texas Project: NRC Enters Monitoring Mode Due to Hurricane Rita
PNO-I-05-027 09/16/2005 Virginia Commonwealth University: Unplanned Contamination of an Air Handler Unit
PNO-I-05-027 09/16/2005 Virginia Commonwealth University: Unplanned Contamination of an Air Handler Unit
PNO-II-05-006A 09/15/2005 Brunswick Steam Electric Plant Units 1 & 2: Notification of Unusual Event
PNO-II-05-006 09/14/2005 Brunswick Steam Electric Plant Units 1 & 3: Region II Response to Hurricane Ophelia
PNO-III-05-013 09/13/2005 Braidwood Power Plant: Forced Outage Due to Reactor Coolant Pump Leak-Off in excess of vendor recommendations
PNO-IV-05-012C 09/08/2005 Final Update - Exit of the Notice of Unusual Event at Waterford-3
PNO-II-05-005 09/02/2005 Duke Energy Corporation, Oconee Unit 3: Reactor Trip with Emergency Core Cooling System (ECCS) Initiation, Notification of Unusual Event
PNO-IV-05-012B 09/02/2005 Update - Notice of Unusual Event, Plant Shutdown, and Loss of Offsite Power at Waterford-3
PNO-I-05-026A 09/01/2005 PSEG Nuclear, LLC/Hope Creek: Shutdown Expected to Be Greater than 72 Hours to Repair an Inoperable Drywell to Suppression Chamber Vacuum Breaker
PNO-III-05-012 09/01/2005 Exelon Generation Company, Dresden: Shutdown Expected to be Greater than 72 Hours to Replace the Unit 2 Main Transformer

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August
PNO-IV-05-012A 08/30/2005 Update - Notice of Unusual Event: Plant Shutdown, and Loss of Offsite Power at Waterford-3
PNO-IV-05-012 08/29/2005 Notice of Unusual Event, Plant Shutdown, and Loss of Offsite Power at Waterford-3
PNO-I-05-026 08/29/2005 PSEG Nuclear, LLC/Hope Creek: Shutdown Expected to Be Greater than 72 Hours to Repair an Inoperable Drywell to Suppression Chamber Vacuum Breaker
PNO-IV-05-011 08/24/2005 Palo Verde Nuclear Generating Station: Unit 2 Shutdown to Repair Core Protection Calculators (CPCs)
PNO-IV-05-010A 08/24/2005 Palo Verde Nuclear Generating Station, Unit 1: Update to Preliminary Notification PNO-IV-05-010, Shutdown to Repair Auto Voltage Regulator on Emergency Diesel Generator (EDG) Train B
PNO-I-05-025 08/23/2005 GEO-EXPLOR, Inc.: Missing Portable Moisture Density Gauge
PNO-I-05-024 08/19/2005 Princeton Technology Center: Loss of a Sealed Source Containing 1.5 Curies of Tritium (Hydrogen-3)
PNO-I-05-023A 08/17/2005 TJUH, Inc.: Update to Iodine-131 Contamination Event Resulting in a Skin Exposure Likely to Exceed 50 rem(0.5Sv)
PNO-IV-05-010 08/15/2005 Palo Verde Nuclear Generating Station, Unit 1: Shutdown to Repair Auto Voltage Regulator on Emergency Diesel Generator (EDG) Train B
PNO-II-05-004 08/09/2005 Brunswick Steam Electric Plant: TS Required Shutdown Due to Inoperability of all Emergency Diesel Generators
PNO-I-05-022 08/08/2005 AmerGen Energy Company - Oyster Creek Nuclear Generating Station: Alert Declaration at Oyster Creek

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July
PNO-IV-05-009 07/07/2005 H&G Inspection Co., Inc.: Excessive TLD Reading
PNO-I-05-020A 07/12/2005 Entergy Nuclear Northeast/FitzPatrick Nuclear Power Plant: Supplement - Shutdown to Repair Small Crack in the Torus Portion of Primary Containment
PNO-I-05-020 07/01/2005 Entergy Nuclear Northeast: Shutdown Expected to Be Greater than 72 Hours to Repair a Small Crack in the Torus Portion of Primary Containment

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June
PNO-II-05-003 06/28/2005 Florida Power & Light Co.: Fire in the Main Transformer
PNO-III-05-010 06/27/2005 Fermi Nuclear Power Plant: Fermi Forced Outage Due to Reactor Building Closed Cooling Water System Leak in the Drywell
PNO-IV-04-008 06/24/2005 Energy Northwest Columbia Generating Station: Energy Northwest Columbia Generating Station, Notice of Unusual Event Due to Detection of Flammable Gas in the General Services Building

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May
PNO-II-05-002 05/24/2005 Southern Nuclear Company: Vogtle Unit 2 Shutdown to Repair Condenser Tube(s) Leak
PNO-I-05-019A 05/02/2005 Craig Testing Laboratories, Inc.: Update to Missing Portable Moisture Density Gauge

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April
PNO-I-05-018A 04/27/2005 Connecticut Yankee Atomic Power Company - Haddam Neck: Supplement to Equipment Fire Inside Containment Structure at Decommissioning Reactor Site
PNO-I-05-019 04/27/2005 Craig Testing Laboratories, Inc.: Missing Portable Moisture Density Gauge
PNO-I-05-018 04/26/2005 Connecticut Yankee Atomic Power Co./Haddam Neck Plant: Equipment Fire Inside Containment Structure at Decommissioning Reactor Site
PNO-III-05-009 04/20/2005 Nuclear Management Company/Prairie Island: Technical Specification Required Shutdown of Prairie Island Unit 2 for Greater than 72 Hours
PNO-I-05-017 04/18/2005 Millstone Unit 3 Power Station: Alert Declared at Millstone 3 Due to a Main Steam Safety Valve Not Reseating after an SI Actuation on Low Main Steam Line Pressure
PNO-III-05-008 04/14/2005 University of Wisconsin: Medical Event Involving Yttrium-90 Zevalin
PNO-I-05-015A 04/08/2005 PSEG Nuclear, LLC: Supplement - Shutdown Greater than 72 Hours to Repair a Leak from a Chemical Decontamination Pipe on the ‘B’ Reactor Recirculation Loop

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March
PNO-IV-05-007 03/29/2005 Union Electric Company Callaway Plant: Technical Specification Required Plant Shutdown
PNO-III-05-006 03/29/2005 St. Joseph's Regional Medical Center: Two Medical Events Involving Unintended Doses to the Skin
PNO-I-05-015 03/28/2005 PSEG Nuclear, LLC: Shutdown Expected to Be Greater than 72 Hours to Repair a Steam Leak from a Chemical Decontamination Pipe on the ‘B’ Reactor Recirculation Loop
PNO-IV-05-006 03/22/2005 Conan MMP Inspections, Inc.: Overexposure During Radiography Operations

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February
PNO-III-05-004 02/25/2005 Exelon/Clinton: Clinton Shutdown for Greater than 72 Hours to Repair Damaged Feedwater Extraction Steam Line
PNO-IV-05-005 02/23/2005 Pacific Gas and Electric Company, Humboldt Bay Power Plant: Notification of Missing In-Core Detectors at Humboldt Bay
PNO-III-05-003 02/23/2005 Nuclear Management Company, LLC/Kewaunee: Shutdown in Excess of 72 Hours Due to Auxiliary Feedwater System Declared Inoperable Due to High Energy Line Break Concerns
PNO-IV-05-004 02/18/2005 SONGS: Shutdown to Repair Component Cooling Water Valve
PNO-IV-05-003 02/10/2005 South Texas Project Operating Company: Shutdown to Repair Reactor Coolant System Leak
PNO-IV-05-002 02/10/2005 Palo Verde Nuclear Generating Station Unit 1: Technical Specification Required Shutdown Due to a Partial Loss of Offsite Power

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January
PNO-IV-05-001 01/28/2005 San Diego Harbor, San Diego, CA: Discovery of Cobalt-60 Source Onboard a Cruise Ship
PNO-III-05-002 01/28/2005 University of Minnesota: Medical Event Involving Under Dose to Treatment Area
PNO-III-05-001 01/25/2005 Fermi 2: Manual Scram Due to Unidentified Leakage in Drywell

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Page Last Reviewed/Updated Wednesday, March 10, 2021