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Category:NRC Preliminary Notification of Event/Occurrence
MONTHYEARML12320A0202012-11-14014 November 2012 Update: PNO-I-12-007A Hurricane Sandy Update Causes Oyster Creek Alert and Shutdowns of Reactors at Nine Mile Point Unit 1, Indian Point Unit 3 and Salem Unit 1 PNO-I-12-007, Hurricane Sandy Causes Oyster Creek Alert and Shutdowns of Reactors at Nine Mile Point Unit 1, Indian Point Unit 3, and Salem Unit 12012-10-31031 October 2012 PNO-I-12-007 - Hurricane Sandy Causes Oyster Creek Alert and Shutdowns of Reactors at Nine Mile Point Unit 1, Indian Point Unit 3, and Salem Unit 1 PNO-I-12-005, Oyster Creek Reactor Shutdown and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours2012-07-31031 July 2012 PNO-I-12-005 - Oyster Creek Reactor Shutdown and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours ML1123601032011-08-23023 August 2011 PNO-II-11-005: North Anna, Emergency Declarations Due to Seismic Event PNO-I-09-005, A: Update: Oyster Creek Reactor Trip and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours2009-07-17017 July 2009 PNO-I-09-005A: Update: Oyster Creek Reactor Trip and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours ML0919604862009-07-15015 July 2009 PNO-I-09-005: Exelon Generation Co. Llc., Oyster Creek Reactor Trip and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours PNO-I-09-002, A: Oyster Creek, Update - Shutdown Greater than 72 Hours: Manual Reactor Scram Following Loss of Cooling to Main Transformer, Dated 05/04/20092009-05-0404 May 2009 PNO-I-09-002A: Oyster Creek, Update - Shutdown Greater than 72 Hours: Manual Reactor Scram Following Loss of Cooling to Main Transformer, Dated 05/04/2009 ML0911706642009-04-27027 April 2009 PNO-I-09-002 - Oyster Creek, Shutdown Greater than 72 Hours: Manual Reactor Scram Following Loss of Cooling to Main Transformer PNO-I-09-001, A: Exelon Generation Company, LLC, Update - Oyster Creek Unusual Event and Automatic Reactor Scram Due to Fire in M1A Main Transformer2009-02-0505 February 2009 PNO-I-09-001A: Exelon Generation Company, LLC, Update - Oyster Creek Unusual Event and Automatic Reactor Scram Due to Fire in M1A Main Transformer ML0903304152009-02-0202 February 2009 PNO-I-09-001: Unusual Event and Automatic Reactor Scram Due to a Fire in the M1A Main Transformer at Oyster Creek Station PNO-I-08-013, A - Update - Oyster Creek: Automatic Reactor Scram Due to Main Transformer Fault2008-12-0505 December 2008 PNO-I-08-013A - Update - Oyster Creek: Automatic Reactor Scram Due to Main Transformer Fault ML0833602712008-12-0101 December 2008 PNO-I-08-013: Shutdown Greater than 72 Hrs: Automatic Reactor Scram Due to Main Transformer Fault - Oyster Creek ML0914703712008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Primary Containm ML0914703692008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek Renewal Commitments Related to the Drywall Primary Containm ML0914703702008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywell Primary ML0914703722008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Primary Containm ML0914804412008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Primary Containm ML0914804422008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywall Primary ML0914804432008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywall Primary ML0914804442008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Primary Containm ML0914804452008-11-30030 November 2008 Draft Preliminary Notification of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Primary Containment Drywe ML0914804462008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Facility Amergen Energy Company, LLC, Oyster Creek, Subject - Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywell Primary ML0919605922008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX, Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywell Primary Containment ML0919605932008-11-30030 November 2008 Draft Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-XXX Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywell Primary Containment ML0911907252008-11-17017 November 2008 Preliminary Notification of Event of Unusual Occurrence, PNO-1-08-012; Subject Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywell Primary Containment, with Hand Written Notes ML0911906532008-11-17017 November 2008 E-mail from K. Heater of USNRC to Various, Regarding PNO-I-08-012: Oyster Creek - Results of Implementation of License Renewal Commitments ML0914606862008-11-14014 November 2008 E-mail from J. Richmond of USNRC to Various, Regarding Oc PNO - Nov 2008 Drywell Rev 3 ML0919004242008-11-0707 November 2008 E-mail from R. Conte of USNRC to J. Richmond, D. Tifft and D. Pelton of USNRC, Regarding Oyster Creek Preliminary Notification(Draft) and Communications Plan, Rev. 1 PNO-I-07-006, A - NRC Resident Inspector - Update - Reactor Scram on Low Reactor Vessel Water Level Due to a Trip of the 'C' Reactor Feed Pump2007-07-23023 July 2007 PNO-I-07-006A - NRC Resident Inspector - Update - Reactor Scram on Low Reactor Vessel Water Level Due to a Trip of the 'C' Reactor Feed Pump ML0719904282007-07-17017 July 2007 PNO-I-07-006: Reactor Scram on Low Reactor Vessel Water Level Due to a Trip of the C Reactor Feed Pump PNO-I-06-012, Oyster Creek, Evaluation of Containment Design Function2006-11-0909 November 2006 PNO-I-06-012: Oyster Creek, Evaluation of Containment Design Function PNO-I-05-022, Alert Declaration at Oyster Creek2005-08-0808 August 2005 PNO-I-05-022 - Alert Declaration at Oyster Creek ML0713401372003-05-22022 May 2003 Reactor Operating Events Event Notification Report, Event Number: 39876; Facility: Oyster Creek; Notification Date: 05/22/2003 PNO-I-03-016, Oyster Creek Bargaining Unit Strike at Oyster Creek (39876)2003-05-22022 May 2003 PNO-I-03-016: Oyster Creek Bargaining Unit Strike at Oyster Creek (#39876) PNO-I-02-020, Unusual Event Due to a Hydrogen Gas Ignition in the Off-Gas System (39348)2002-11-0707 November 2002 PNO-I-02-020: Unusual Event Due to a Hydrogen Gas Ignition in the Off-Gas System (#39348) 2012-07-31
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DCS No.: 0500021907122009 Date: July 17, 2009 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-I-09-005A This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. Some of the information may not yet be fully verified or evaluated by the Region Staff.
Facility Exelon Generation Company, LLC Licensee Emergency Classification Oyster Creek X Notification of Unusual Event Forked River, NJ Alert Docket: 50-219 Site Area Emergency General Emergency Not Applicable
SUBJECT:
UPDATED - OYSTER CREEK REACTOR TRIP AND UNUSUAL EVENT DUE TO A LOSS OF OFFSITE POWER AND SHUTDOWN GREATER THAN 72 HOURS This preliminary notification updates information in PNO-I-09-005, which documented a July 12 loss of offsite power, resultant reactor scram and Unusual Event. At the time of the last notification, offsite power had been restored, the Unusual Event had been terminated, and the plant had achieved cold shutdown.
The resident and regional inspection staff monitored the licensees actions to address equipment issues prior to plant restart. The Q121 breaker, which failed to open, is being maintained open until the cause of the failure is identified and corrected by the electrical grid operator. The open Q121 breaker has no adverse effect on plant operation. The delayed loading of the #1 EDG was determined to be caused by a faulty auto-sync module, which has been replaced and successfully tested. The erroneous 'B' isolation condenser level indication was determined to be caused by foreign material in the sensing line and the licensee has developed a program to flush and monitor these lines to prevent recurrence. The resident staff and regional specialists inspected these issues to verify restart readiness.
On July 16, Exelon took the reactor critical at 12:12 a.m. and placed the turbine in service and connected the plant to the electrical grid at 3:13 p.m. Oyster Creek is currently at 90-percent power as Exelon resolves an issue with one of the four circulating water pumps failing to start.
The Resident Inspectors observed portions of the plant startup and continue to follow the licensees corrective maintenance activities.
The Region dispatched a Special Inspection Team (SIT) on July 16 to review and assess the equipment issues and station response to the event (see Press Release dated July 16, 2009, No. I-09-035).
State and local officials have been informed. Region I Public Affairs is prepared to respond to media inquiries.
The information presented herein has been discussed with Oyster Creek Site Vice President Michael Massaro and is current as of July 17, 2009 at 11:00 a.m.
ADAMS Accession Number: ML091980259 CONTACT: Scott Barber (610) 337-5232
DISTRIBUTION: (by email)
Chairman Jazcko Comm. Klein Comm. Svinicki OIP OCA OGC OPA EDO OE NRR SECY IRO NMSS ACRS OIG RES NSIR NRO PDR RSLO Regional Offices By Fax:
DOT:Trans INPO NSAC RI Resident Office Licensee: Exelon Generation Company LLC Oyster Creek Generating Station ADAMS Accession Number: ML091980259 SUNSI Review Complete: RRB (Reviewers Initials)
DOCUMENT NAME: G:\DRP\PNS\PNO-I-09-005A - OC RX TRIP DUE TO A LOOP - UPDATE.DOC After declaring this document An Official Agency Record it will be released to the Public.
To receive a copy of this document, indicate in the box: "C" = Copy without attachment/enclosure, "E" = Copy with attachment/enclosure "N" = No copy OFFICE RI/DRP RI/ORA RI/PAO RI/DRP RI/DRP NAME SBarber/ RRB for DTifft/DT DScrenci/NAS for DLew/JWC for RBarkley/RB DATE 07/16 /09 07/16 /09 07/17/09 07/ 17/09 07/17 /09 OFFICIAL RECORD COPY