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Category:Press Release
MONTHYEARPress Release-IV-21-008, NRC Names New Senior Resident Inspector at the Palo Verde Nuclear Generating Station2021-06-0707 June 2021 Press Release-IV-21-008: NRC Names New Senior Resident Inspector at the Palo Verde Nuclear Generating Station Press Release-IV-21-005, NRC to Hold Virtual Meeting to Discuss 2020 Performance of 10 Region IV Nuclear Power Plants2021-04-30030 April 2021 Press Release-IV-21-005: NRC to Hold Virtual Meeting to Discuss 2020 Performance of 10 Region IV Nuclear Power Plants Press Release-IV-21-002, NRC Schedules Regulatory Teleconference with Palo Verde Nuclear Generating Station2021-01-26026 January 2021 Press Release-IV-21-002: NRC Schedules Regulatory Teleconference with Palo Verde Nuclear Generating Station Press Release-IV-21-001, NRC Names New Resident Inspector at the Palo Verde Nuclear Generating Station2021-01-19019 January 2021 Press Release-IV-21-001: NRC Names New Resident Inspector at the Palo Verde Nuclear Generating Station Press Release-IV-20-024, NRC Issues Confirmatory Order to Arizona Public Service Company2020-11-18018 November 2020 Press Release-IV-20-024: NRC Issues Confirmatory Order to Arizona Public Service Company Press Release-IV-20-020, NRC Names New Resident Inspector at the Palo Verde Nuclear Power Plant2020-10-14014 October 2020 Press Release-IV-20-020: NRC Names New Resident Inspector at the Palo Verde Nuclear Power Plant Press Release-IV-20-007, NRC to Hold Virtual Meeting to Discuss 2019 Performance of 12 Region IV Nuclear Power Plants2020-06-22022 June 2020 Press Release-IV-20-007: NRC to Hold Virtual Meeting to Discuss 2019 Performance of 12 Region IV Nuclear Power Plants Press Release-IV-19-001, NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station2019-01-0707 January 2019 Press Release-IV-19-001: NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station Press Release-IV-17-002, NRC Begins Special Inspection at Palo Verde Nuclear Generating Station2017-02-0606 February 2017 Press Release-IV-17-002: NRC Begins Special Inspection at Palo Verde Nuclear Generating Station Press Release-IV-15-021, NRC to Hold Open House on August 25 for Palo Verde Nuclear Generating Station2015-08-0505 August 2015 Press Release-IV-15-021: NRC to Hold Open House on August 25 for Palo Verde Nuclear Generating Station Press Release-IV-14-026, NRC Names New Senior Resident Inspector at Palo Verde Nuclear Generating Station2014-12-15015 December 2014 Press Release-IV-14-026: NRC Names New Senior Resident Inspector at Palo Verde Nuclear Generating Station Press Release-IV-14-021, NRC Schedules Open House to Discuss Performance of Palo Verde Nuclear Generating Station2014-09-0202 September 2014 Press Release-IV-14-021: NRC Schedules Open House to Discuss Performance of Palo Verde Nuclear Generating Station ML14181A6142014-06-30030 June 2014 Press Release No. IV-14-015: NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station Press Release-12-099, NRC Issues Mid-Cycle Assessments for Nation? Nuclear Plants2012-09-0606 September 2012 Press Release-12-099: NRC Issues Mid-Cycle Assessments for Nation? Nuclear Plants Press Release-12-089, NRC Completes Reintegration of Security Into Reactor Oversight Process Assessments2012-08-0101 August 2012 Press Release-12-089: NRC Completes Reintegration of Security Into Reactor Oversight Process Assessments Press Release-IV-12-010, NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station2012-03-26026 March 2012 Press Release-IV-12-010: NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station Press Release-IV-11-017, NRC to Hold Open House to Discuss 2010 Performance for Palo Verde Nuclear Generating Station2011-05-0303 May 2011 Press Release-IV-11-017: NRC to Hold Open House to Discuss 2010 Performance for Palo Verde Nuclear Generating Station Press Release-11-068, NRC Renews Operating Licenses for Palo Verde Nuclear Power Plant for an Additional 20 Years2011-04-21021 April 2011 Press Release-11-068: NRC Renews Operating Licenses for Palo Verde Nuclear Power Plant for an Additional 20 Years Press Release-11-008, NRC Issues Final Safety Evaluation Report for Palo Verde Nuclear Power Plant License Renewal2011-01-13013 January 2011 Press Release-11-008: NRC Issues Final Safety Evaluation Report for Palo Verde Nuclear Power Plant License Renewal Press Release-11-002, NRC Issues Final Safety Evaluation Report for Palo Verde Nuclear Power Plant License Renewal2011-01-0303 January 2011 Press Release-11-002: NRC Issues Final Safety Evaluation Report for Palo Verde Nuclear Power Plant License Renewal Press Release-IV-11-001, NRC Names New Senior Resident Inspector at Palo Verde Nuclear Power Plant2011-01-0303 January 2011 Press Release-IV-11-001: NRC Names New Senior Resident Inspector at Palo Verde Nuclear Power Plant Press Release-10-142, NRC Seeks Public Input on Draft Environmental Impact Statement for Palo Verde Nuclear Power Plant License Renewal; Meeting Sept. 152010-08-17017 August 2010 Press Release-10-142: NRC Seeks Public Input on Draft Environmental Impact Statement for Palo Verde Nuclear Power Plant License Renewal; Meeting Sept. 15 Press Release-IV-10-007, NRC to Discuss 2009 Performance Assessment for Palo Verde Nuclear Generating Station2010-03-18018 March 2010 Press Release-IV-10-007: NRC to Discuss 2009 Performance Assessment for Palo Verde Nuclear Generating Station Press Release-IV-09-029, NRC to Hold Public Meetings on Palo Verde Nuclear Generating Station2009-08-28028 August 2009 Press Release-IV-09-029: NRC to Hold Public Meetings on Palo Verde Nuclear Generating Station Press Release-09-109, NRC Seeks Public Input on Environmental Review of Palo Verde Nuclear Plant License Renewal; Meetings June 252009-06-11011 June 2009 Press Release-09-109: NRC Seeks Public Input on Environmental Review of Palo Verde Nuclear Plant License Renewal; Meetings June 25 Press Release-09-088, NRC Announces Opportunity to Request Hearing on License Renewal Application for Palo Verde Nuclear Generating Station2009-05-20020 May 2009 Press Release-09-088: NRC Announces Opportunity to Request Hearing on License Renewal Application for Palo Verde Nuclear Generating Station Press Release-IV-09-009, NRC to Reduce Palo Verde Oversight2009-03-24024 March 2009 Press Release-IV-09-009: NRC to Reduce Palo Verde Oversight Press Release-IV-09-005, NRC to Discuss 2008 Performance Assessment for Palo Verde Nuclear Generating Station2009-03-17017 March 2009 Press Release-IV-09-005: NRC to Discuss 2008 Performance Assessment for Palo Verde Nuclear Generating Station Press Release-09-042, NRC Issues Annual Assessments for Nations Nuclear Plants2009-03-0606 March 2009 Press Release-09-042: NRC Issues Annual Assessments for Nations Nuclear Plants Press Release-08-234, NRC Announces Availability of License Renewal Application for Palo Verde Nuclear Generating Station2008-12-24024 December 2008 Press Release-08-234: NRC Announces Availability of License Renewal Application for Palo Verde Nuclear Generating Station Press Release-IV-08-043, NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station2008-12-12012 December 2008 Press Release-IV-08-043: NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station Press Release-IV-08-039, NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station2008-09-18018 September 2008 Press Release-IV-08-039: NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station Press Release-IV-08-026, NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station2008-06-11011 June 2008 Press Release-IV-08-026: NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station Press Release-IV-08-009, NRC to Hold Regulatory Conference with Arizona Public Service Co. on Palo Verde Nuclear Generating Station2008-03-17017 March 2008 Press Release-IV-08-009: NRC to Hold Regulatory Conference with Arizona Public Service Co. on Palo Verde Nuclear Generating Station Press Release-IV-08-008, NRC to Discuss 2007 Performance Assessment for Palo Verde Nuclear Generating Station2008-03-14014 March 2008 Press Release-IV-08-008: NRC to Discuss 2007 Performance Assessment for Palo Verde Nuclear Generating Station Press Release-IV-08-001, NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station2008-01-0404 January 2008 Press Release-IV-08-001: NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station Press Release-IV-07-046, NRC to Hold Public Meeting on Palo Verde Nucelar Generating Station2007-12-13013 December 2007 Press Release-IV-07-046: NRC to Hold Public Meeting on Palo Verde Nucelar Generating Station Press Release-IV-07-038, - NRC Issues Confirmatory Orders to Arizona Public Service Co. & Former Employee Requiring Corrective Actions2007-10-22022 October 2007 Press Release-IV-07-038 - NRC Issues Confirmatory Orders to Arizona Public Service Co. & Former Employee Requiring Corrective Actions Press Release-IV-07-037, - NRC Begins Comprehensive Inspection at Palo Verde Nuclear Generating Station2007-10-0101 October 2007 Press Release-IV-07-037 - NRC Begins Comprehensive Inspection at Palo Verde Nuclear Generating Station Press Release-IV-07-032, NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station2007-08-31031 August 2007 Press Release-IV-07-032: NRC to Hold Public Meeting on Palo Verde Nuclear Generating Station Press Release-IV-07-028, - NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station2007-08-0606 August 2007 Press Release-IV-07-028 - NRC Names New Resident Inspector at Palo Verde Nuclear Generating Station Press Release-IV-07-023, - NRC Issues Confirmatory Action Letter on Palo Verde Nuclear Plant2007-06-21021 June 2007 Press Release-IV-07-023 - NRC Issues Confirmatory Action Letter on Palo Verde Nuclear Plant Press Release-IV-07-016, NRC to Hold Two Public Meetings on Palo Verde Nuclear Generating Station2007-05-30030 May 2007 Press Release-IV-07-016: NRC to Hold Two Public Meetings on Palo Verde Nuclear Generating Station Press Release-IV-07-006, - NRC to Discuss 2006 Performance Assessment for Palo Verde Nuclear Generating Station2007-03-27027 March 2007 Press Release-IV-07-006 - NRC to Discuss 2006 Performance Assessment for Palo Verde Nuclear Generating Station Press Release-07-026, NRC Chairman Dale Klein Discusses Palo Verde Nuclear Power Plant2007-02-23023 February 2007 Press Release-07-026: NRC Chairman Dale Klein Discusses Palo Verde Nuclear Power Plant Press Release-07-027, Statement of NRC Chairman Dale Klein Tucson, Arizona February 23, 20072007-02-23023 February 2007 Press Release-07-027: Statement of NRC Chairman Dale Klein Tucson, Arizona February 23, 2007 Press Release-IV-07-003, NRC Issues White Finding at Palo Verde Nuclear Plant2007-02-22022 February 2007 Press Release-IV-07-003: NRC Issues White Finding at Palo Verde Nuclear Plant Press Release-IV-07-001, NRC to Hold Regulatory Conference with Arizona Public Service Company on Palo Verde Nuclear Generating Station2007-01-0909 January 2007 Press Release-IV-07-001: NRC to Hold Regulatory Conference with Arizona Public Service Company on Palo Verde Nuclear Generating Station Press Release-IV-06-025, NRC to Hold Regulatory Conference with Arizona Public Service Co. on Palo Verde Nuclear Generating Station2006-11-16016 November 2006 Press Release-IV-06-025: NRC to Hold Regulatory Conference with Arizona Public Service Co. on Palo Verde Nuclear Generating Station Press Release-IV-06-022, NRC to Conduct Special Inspection at Palo Verde Nuclear Generating Station2006-10-0202 October 2006 Press Release-IV-06-022: NRC to Conduct Special Inspection at Palo Verde Nuclear Generating Station 2021-06-07
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NRC NEWS U. S. NUCLEAR REGULATORY COMMISSION Office of Public Affairs Region IV 611 Ryan Plaza Drive - Suite 400 Arlington, TX 76011-4005 No. IV-04-024 June 15, 2004
Contact:
Victor Dricks E-Mail: opa4@nrc.gov Phone: 817-860-8128 NRC SENDS AUGMENTED INSPECTION TEAM TO PALO VERDE The Nuclear Regulatory Commission has dispatched a team from its Region IV office in Arlington, Texas, to the Palo Verde Nuclear Generating Station to look into the causes of, and the plant response to, the shutdown of its three reactors at the site on June 14. An electrical grid disturbance has been identified as the initiating cause of the shutdowns.
Known as an Augmented Inspection Team (AIT), it will be charged with learning the facts surrounding the event at Palo Verde, which is located near Wintersburg, Arizona and operated by Arizona Public Service Co.
Like all nuclear plants, Palo Verde uses off-site power. If that power source is interrupted, the plant is designed to shut down safely, which is exactly what occurred without any danger to public health or safety, said Region IV Deputy Regional Administrator Thomas P.
Gwynn. However, because of some complications associated with the event, we want to take a detailed look at what occurred.
Team members will arrive at the facility today. The teams findings will be made public in an inspection report to be issued within 30 days of completion of on-site reviews.
At about 7:45 a.m. MST on June 14, all three Palo Verde reactors shut down automatically following a loss of off-site power. As they are designed to, four emergency diesel generators started up at Units 1 and 3 upon the interruption of off-site power. Those generators are designed to provide power to key safety systems and assist with the safe shutdown of the reactors. The loss of off-site power prompted the declaration of an Unusual Event at Units 1 and 3, the lowest level of emergency classification used by the NRC.
However, one of two emergency diesel generators at Unit 2 failed to start. Operators were able to safely shut down the reactor and cool it using power provided by the diesel generator that did start. However because only a single power source was available, the licensee declared an Alert at Unit 2. This is the second lowest of four levels of emergency classification
used by the NRC. Shortly before 10 a.m. MST, off-site power was restored and the Alert was downgraded to an Unusual Event. The Unusual Event for all three units was terminated shortly after noon.