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| Those problems include a lack of questioning attitude, lack of technical rigor and poor operability determinations by workers - factors which contributed to a more recent finding issued by the NRC for problems with a emergency diesel generator at Unit 3, moving Palo Verde into a higher level of NRC oversight. | | Those problems include a lack of questioning attitude, lack of technical rigor and poor operability determinations by workers - factors which contributed to a more recent finding issued by the NRC for problems with a emergency diesel generator at Unit 3, moving Palo Verde into a higher level of NRC oversight. |
| Two substantive cross-cutting issues in the areas of human performance and problem identification and resolution have also remained open since the NRCs 2004 end-of-cycle assessment. Palo Verde has also had numerous operational challenges since 2004, including multiple reactor trips and unplanned shutdowns. | | Two substantive cross-cutting issues in the areas of human performance and problem identification and resolution have also remained open since the NRCs 2004 end-of-cycle assessment. Palo Verde has also had numerous operational challenges since 2004, including multiple reactor trips and unplanned shutdowns. |
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| NRC news releases are available through a free list serve subscription at the following Web address: | | NRC news releases are available through a free list serve subscription at the following Web address: |
| http://www.nrc.gov/public-involve/listserver.html . The NRC homepage at www.nrc.gov also offers a SUBSCRIBE link. E-mail notifications are sent to subscribers when news releases are posted to NRC's Web site.}} | | http://www.nrc.gov/public-involve/listserver.html . The NRC homepage at www.nrc.gov also offers a SUBSCRIBE link. E-mail notifications are sent to subscribers when news releases are posted to NRC's Web site.}} |
Latest revision as of 14:36, 13 March 2020
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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-07-023 June 21, 2007
Contact:
Victor Dricks E-Mail: opa4@nrc.gov Phone: 817-860-8128 NRC ISSUES CONFIRMATORY ACTION LETTER ON PALO VERDE NUCLEAR PLANT The Nuclear Regulatory Commission staff has issued a Confirmatory Action Letter (CAL) to Arizona Public Service Co. confirming the companys commitments regarding actions it will take to improve performance at the Palo Verde Nuclear Generating Station. APS operates the plant located in Wintersburg, Ariz.
Palo Verde is being operated safely, but performance improvements are needed, NRC Region IV Administrator Bruce S. Mallett said. We intend to hold APS accountable to perform a thorough evaluation of the causes of the performance problems at Palo Verde and to complete actions to correct them. The letter will serve as a roadmap for performance improvement.
The letter confirms commitments the company has made to the NRC to:
- 1. Complete actions to address root and contributing causes identified in its evaluations in response to performance problems associated with the voided containment sump suction piping for all three units, and associated with the Unit 3 emergency diesel generator electrical relay problems, including:
- Ineffective resolution of emerging technical issues, including thoroughness of technical evaluations and troubleshooting
- Failure to routinely question the validity of engineering assumptions used to support operability decisions for degraded equipment
- Lack of consistently notifying operations personnel of immediate operability concerns
- Inadequate performance monitoring measures necessary to fully assess the effectiveness of the corrective actions.
- 2. Complete corrective actions that result in measurable improvement in the crosscutting areas of human performance and problem identification and resolution. Specific areas to address are:
- 3. Complete an independent (third party) safety culture assessment by September 15.
- 4. Incorporate the results of their in-depth evaluations and safety culture assessments into a modified improvement plan.
- 5. Submit to the NRC portions of the modified improvement plans that impact the Reactor Safety strategic performance area, including safety culture improvement initiatives by November 30.
Issuance of the CAL does not preclude subsequent issuance of an order formalizing the commitments requiring other actions on the part of the company.
Palo Verde has been under increased NRC oversight since the fourth quarter of 2004 following a finding for a substantial safety issue. Inspectors found that APS had incorrectly left air pockets in portions of the emergency core cooling system for each reactor that could have hindered the systems operation during certain types of accidents. The finding remains open because APS has not effectively addressed performance problems.
Those problems include a lack of questioning attitude, lack of technical rigor and poor operability determinations by workers - factors which contributed to a more recent finding issued by the NRC for problems with a emergency diesel generator at Unit 3, moving Palo Verde into a higher level of NRC oversight.
Two substantive cross-cutting issues in the areas of human performance and problem identification and resolution have also remained open since the NRCs 2004 end-of-cycle assessment. Palo Verde has also had numerous operational challenges since 2004, including multiple reactor trips and unplanned shutdowns.
NRC news releases are available through a free list serve subscription at the following Web address:
http://www.nrc.gov/public-involve/listserver.html . The NRC homepage at www.nrc.gov also offers a SUBSCRIBE link. E-mail notifications are sent to subscribers when news releases are posted to NRC's Web site.