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Category:NRC Preliminary Notification of Event/Occurrence
MONTHYEARML21190A2422021-07-0909 July 2021 PNO-lll-21-001A: Donald C. Cook Nuclear Plant, Unit 2, Update: Unplanned Shutdown Greater than 7 Days Due to Main Steam Leakage ML21181A4162021-06-30030 June 2021 PNO-lll-21-001 Donald C. Cook Nuclear Plant, Unit 2: Unplanned Shutdown Greater than 7 Days Due to Main Steam Leakage PNO-III-20-001A, Update: Unplanned Shutdown Greater than 72 Hours Due to Reactor Coolant System Leakage Exceeding Technical Specification Limits2020-05-11011 May 2020 PNO-III-20-001A Update: Unplanned Shutdown Greater than 72 Hours Due to Reactor Coolant System Leakage Exceeding Technical Specification Limits PNO-III-20-001, Unplanned Shutdown Greater than 72 Hours Due to Reactor Coolant System Leakage Exceeding Technical Specification Limits2020-05-0404 May 2020 PNO-III-20-001: Unplanned Shutdown Greater than 72 Hours Due to Reactor Coolant System Leakage Exceeding Technical Specification Limits PNO-III-19-002, Palisades, Through-Wall Leak Identified on a Reactor Vessel Head Nozzle2018-11-14014 November 2018 PNO-III-19-002: Palisades, Through-Wall Leak Identified on a Reactor Vessel Head Nozzle PNO-III-19-001, Maintenance Outage to Repair Control Rod Drive and Failed Transformer2018-10-18018 October 2018 PNO-III-19-001: Maintenance Outage to Repair Control Rod Drive and Failed Transformer ML17256A7152017-09-13013 September 2017 PNO-III-2017-002: Donald C. Cook Notice of Unusual Event During Plant Shutdown Due to Increased Reactor Coolant System Leakage PNO-III-16-003, D.C. Cook Unit 2 Manual Trip Resulting in a Shutdown for Greater than 72 Hours2016-07-12012 July 2016 PNO-III-16-003: D.C. Cook Unit 2 Manual Trip Resulting in a Shutdown for Greater than 72 Hours PNO-III-15-007, A - D.C. Cook: Update to Technical Specification Required Shutdown of D.C. Cook Unit 1 Due to an Inoperable Emergency Diesel Generator2015-07-30030 July 2015 PNO-III-15-007A - D.C. Cook: Update to Technical Specification Required Shutdown of D.C. Cook Unit 1 Due to an Inoperable Emergency Diesel Generator ML15153A6192015-06-0202 June 2015 PNO-III-15-007 - D.C. Cook: Technical Specification Required Shutdown of D.C. Cook Unit 1 Due to an Inoperable Emergency Diesel Generator ML14316A5922014-11-12012 November 2014 PNO-lll-14-010A - Update: D.C. Cook Dual Unit Manual Trip Resulting in a Shutdown for Greater than 72 Hours on Unit 2 PNO-III-14-010, D.C. Cook Dual Unit Manual Trip Resulting in a Shutdown for Greater than 72 Hours on Unit 22014-11-0404 November 2014 PNO-III-14-010: D.C. Cook Dual Unit Manual Trip Resulting in a Shutdown for Greater than 72 Hours on Unit 2 PNO-III-14-002, A: Update, Palisades Control Rod Drive Mechanism Housing Flaws2014-03-14014 March 2014 PNO-III-14-002A: Update, Palisades Control Rod Drive Mechanism Housing Flaws ML14030A1902014-01-30030 January 2014 PNO-III-14-002: Palisades Control Rod Drive Mechanism Housing Flaws PNO-III-13-004, B, Update - Palisades Shutdown Due to Safety Injection Refueling Water Tank (SIRWT) Leakage2013-06-17017 June 2013 PNO-III-13-004B, Update - Palisades Shutdown Due to Safety Injection Refueling Water Tank (SIRWT) Leakage ML13129A4382013-05-0909 May 2013 PNO-III-13-004A - Update: Palisades Shutdown Due to Safety Injection Refueling Water Storage Tank (SIRWT) Leakage ML13126A2702013-05-0606 May 2013 PNO-III-13-004 - Palisades Shutdown Due to Safety Injections Refueling Water Storage Tank Leakage PNO-III-13-002, A - Update - Palisades Shutdown Due to Leakage from the Component Cooling Water (CCW) System2013-02-22022 February 2013 PNO-III-13-002A - Update - Palisades Shutdown Due to Leakage from the Component Cooling Water (CCW) System ML13046A4042013-02-15015 February 2013 PNO-III-13-002, Palisades Shutdown Due to Leakage from the Component Cooling Water (CCW) System ML12314A2712012-11-0909 November 2012 PNO-lll-12-015A (Update) Palisades Shutdown Due to Leakage from the Main Steam System ML12310A5052012-11-0505 November 2012 PNO-lll-12-015, Palisades Shutdown Due to Leakage from the Main Steam System PNO-III-12-012, Palisades Leakage from the Service Water System2012-09-25025 September 2012 PNO-III-12-012: Palisades Leakage from the Service Water System PNO-III-12-007, A, Update, Palisades Shutdown Due to Increase in Unidentified Reactor Coolant System Leakage2012-08-30030 August 2012 PNO-III-12-007A, Update, Palisades Shutdown Due to Increase in Unidentified Reactor Coolant System Leakage PNO-III-12-004, A: Update - Palisades Shutdown Due to Safety Injection Refueling Water Storage Tank Leakage2012-07-11011 July 2012 PNO-III-12-004A: Update - Palisades Shutdown Due to Safety Injection Refueling Water Storage Tank Leakage ML12166A2612012-06-14014 June 2012 PNO-III-12-004 - Palisades Shutdown Due to Safety Injection Refueling Water Storage Tank Leakage PNO-III-11-011, A - Palisades Reactor Trip (Update)2011-10-0303 October 2011 PNO-III-11-011-A - Palisades Reactor Trip (Update) ML11269A2302011-09-26026 September 2011 PNO-III-11-011 Palisades Nuclear Plant Reactor Trip PNO-III-11-010, Palisades - Unplanned Shutdown Greater than 72 Hours and Notification of Unusual Event2011-09-19019 September 2011 PNO-III-11-010 - Palisades - Unplanned Shutdown Greater than 72 Hours and Notification of Unusual Event ML1123601032011-08-23023 August 2011 PNO-II-11-005: North Anna, Emergency Declarations Due to Seismic Event PNO-III-11-003, Palisades Shutdown Due to Loss of Main Generator Electrical Load2011-01-24024 January 2011 PNO-III-11-003, Palisades Shutdown Due to Loss of Main Generator Electrical Load PNO-III-11-001, ; Palisades, Unusual Event and 72-Hour Limiting Condition for Operation Due to 4160 V Ground Fault2011-01-11011 January 2011 PNO-III-11-001; Palisades, Unusual Event and 72-Hour Limiting Condition for Operation Due to 4160 V Ground Fault PNO-III-10-010, A: Update - Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rod Drive Seal2010-07-0606 July 2010 PNO-III-10-010A: Update - Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rod Drive Seal ML1017605222010-06-25025 June 2010 PNO-III-10-010 - Palisades - Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rod Drive Seal PNO-I-10-003, Unusual Event Declarations Due to Seismic Activity (Vermont Yankee and D.C. Cook)2010-06-23023 June 2010 PNO-I-10-003: Unusual Event Declarations Due to Seismic Activity (Vermont Yankee and D.C. Cook) PNO-III-09-015, D.C. Cook Unit 1, Return to 100 Percent Power2009-12-23023 December 2009 PNO-III-09-015: D.C. Cook Unit 1, Return to 100 Percent Power PNO-III-09-014, D.C. Cook Unit 1, Restart2009-12-18018 December 2009 PNO-III-09-014: D.C. Cook Unit 1, Restart PNO-III-09-013, D. C. Cook Unit 1 Mode Change Following 14 Months Forced Outage2009-11-23023 November 2009 PNO-III-09-013 - D. C. Cook Unit 1 Mode Change Following 14 Months Forced Outage PNO-III-09-006, A: D.C. Cook Unit 2, Forced Shutdown for Greater than 72 Hours to Repair Reactor Coolant Pump Seal (Update)2009-08-10010 August 2009 PNO-III-09-006A: D.C. Cook Unit 2, Forced Shutdown for Greater than 72 Hours to Repair Reactor Coolant Pump Seal (Update) ML0920901352009-07-28028 July 2009 PNO-III-09-006: D.C. Cook, Unit 2 Forced Shutdown for Greater than 72 Hours to Repair Reactor Coolant Pump Seal PNO-III-09-001, A - Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rob Drive Seal (Update)2009-02-23023 February 2009 PNO-III-09-001A - Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rob Drive Seal (Update) ML0904905272009-02-18018 February 2009 PNO-III-09-001, Palisades Forced Shutdown for Greater than 72 Hours to Replace Leaking Control Rod Drive Seals PNO-III-08-011, D. C. Cook - Unit 1 Manual Trip Due to Main Turbine Generator Fire and Significant Fire Suppression System Degradation2008-09-22022 September 2008 PNO-III-08-011: D. C. Cook - Unit 1 Manual Trip Due to Main Turbine Generator Fire and Significant Fire Suppression System Degradation PNO-III-08-008, A - Palisades - Forced Shutdown to Replace Leaking Control Rod Drive (CRD) Seal Packages (Update)2008-08-11011 August 2008 PNO-III-08-008A - Palisades - Forced Shutdown to Replace Leaking Control Rod Drive (CRD) Seal Packages (Update) ML0822003472008-08-0707 August 2008 PNO-III-08-008 - Palisades Forced Shutdown to Replace Leaking Control Rod Drive Seals PNO-III-08-004, A, Cook and Palisades, Update - Unusual Events Declared Due to Earthquake2008-04-18018 April 2008 PNO-III-08-004A, Cook and Palisades, Update - Unusual Events Declared Due to Earthquake ML0810903102008-04-18018 April 2008 PNO-III-08-004: Cook & Palisades, Unusual Events Declared Due to Earthquake PNO-III-07-006, A: Palisades, Shutdown Due to Low Steam Generator Level (Update)2007-05-14014 May 2007 PNO-III-07-006A: Palisades, Shutdown Due to Low Steam Generator Level (Update) ML0712905812007-05-0909 May 2007 PNO-III-07-006: Palisades Shutdown Due to Low Steam Generator Level PNO-III-07-003, A - Palisades: Shutdown to Replace Heat Damaged Cables (Update)2007-03-0505 March 2007 PNO-III-07-003A - Palisades: Shutdown to Replace Heat Damaged Cables (Update) ML0705805222007-02-27027 February 2007 PNO-III-07-003: Palisades - Palisades Shutdown to Replace Heat-Damaged Cables 2021-07-09
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April 18, 2008
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-III-08-004
This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region III staff on this date.
Facilities D.C. Cook Indiana Michigan Power Company Bridgman, MI Docket Nos. 50-315, 50-316 License Nos. DPR-58, DPR-74
Palisades Entergy Nuclear Operations, Inc.
Covert, MI Docket No. 50-255 License No. DPR-20 Licensee Emergency Classification x Notification of Unusual Event Alert Site Area Emergency General Emergency _ Not Applicable
SUBJECT:
UNUSUAL EVENTS DECLARED DUE TO EARTHQUAKE
DESCRIPTION:
At approximately 6:02 a.m. EDT on April 18, 2008, Indiana Michigan Power Company declared an Unusual Event, the lowest of four NRC emergency notification classifications, at the D.C. Cook Nuclear Plant. At approximately 6:03 a.m. EDT on April 18, 2008, Entergy Nuclear Operations, Inc. declared an Unusual Event at the Palisades Nuclear Plant. The Unusual Events were declared due to an earthquake, magnitude 5.2 on the Richter Scale (source: U.S. Geological Survey), centered in West Salem, Illinois, approximately 250 miles south of the D.C. Cook plant and approximately 280 miles south of the Palisades plant.
The earthquake was felt at the facilities and instrumentation installed in the plants also alerted the operators of the event. The facilities continued to operate normally with no indications of any adverse effects. D.C. Cook Unit 2 and Palisades continue to operate at full power. D.C. Cook Unit 1 was in a refueling outage at the time. To confirm that the earthquake had no adverse impact on the facilities, and in accordance with their procedures, personnel at D.C. Cook and Palisades performed detailed walkdowns of the facilities. No damage has been identified.
NRC inspectors at the sites responded to the event and are monitoring licensee activities from the control room. NRC inspectors also conducted walkdowns of safety significant portions of the facility to independently verify that the event did not have a negative impact on plant equipment. No damage was identified. The NRC's Region III office has maintained contact with the sites to ensure appropriate actions are being completed.
The Unusual Event at D.C. Cook was terminated at 9:05 a.m. EDT. Palisades remains in an Unusual Event pending completion of ongoing assessments.
The State of Michigan has been informed. The information in this preliminary notification has been reviewed with licensee management.
The D.C. Cook event was reported to the NRC Operations Center at 6:20 a.m. EDT and the Palisades event was reported to the NRC Operations Center at 6:23 a.m. EDT on April 18, 2008.
NRC Region III contacted all other operating reactors, large material licensees, and research reactors within Region III. The earthquake was not strong enough to set off seismic alarms, however, all operating reactors in Region III that felt the earthquake have commenced equipment walkdowns. In addition, NRC inspectors are conducting independent walkdowns at all operating reactors that felt the earthquake. No facilities have identified damage and no other emergency declarations were entered.
NRC Region II contacted the Paducah Gaseous Diffusion Plant in Paducah, Kentucky and the Honeywell facility in Metropolis, Illinois. Seismic activity was felt at both facilities. Plant personnel performed precautionary walkdowns of the facilities and found no evidence of damage. No emergency declarations were made at either facility.
This information is current as of 11:40 a.m. EDT on Friday, April 18, 2008.
CONTACTS:
Alex Garmoe Christine Lipa John Pelchat 630/829-9738 630/829-9619 404/562-4729