ML081980646

Public Meeting Slides, Oconee Nuclear Station Annual Assessment Meeting - Reactor Oversight Program - Cy 2007.

ML081980646
Person / Time
Site:	Oconee
Issue date:	04/10/2008
From:	NRC/RGN-II
To:
References
Download: ML081980646 (21)

Text

Oconee Nuclear Station Annual Assessment Meeting Reactor Oversight Program - CY 2007 Nuclear Regulatory Commission - Region II Seneca, South Carolina April 10, 2008

Purpose of Todays Meeting z A public forum for discussion of Oconee Nuclear Stations performance z NRC will address the licensee performance issues identified in the annual assessment letter z Oconee Management will be given the opportunity to respond to the information in the letter and inform the NRC of new or existing programs to maintain or improve their performance

Agenda z Introduction z Review of Reactor Oversight Process z Discussion of Oconee Plant Performance Results z National Summary of Plant Performance z Oconee Management Response and Remarks z NRC Closing Remarks z Break z NRC Available to Address Public Questions

Region II Organization Victor McCree Acting Regional Administrator Charles Casto Acting Deputy Regional Administrator Harold Christensen Kriss Kennedy Acting Director Division of Reactor Projects Director Division of Reactor Safety (Vacant) David Ayres Deputy Director Deputy Director Kathy Weaver Acting Branch Chief Regional Specialists Oconee Resident Inspectors Project Engineers Daniel Rich Robert Carroll, SPE George Hutto Eric Stamm, PE Eric Riggs

NRC Performance Goals z Safety: Ensure protection of the public health and safety and the environment z Security: Ensure the secure use and management of radioactive materials z Openness: Ensure openness in our regulatory process z Effectiveness: Ensure that NRC actions are effective, efficient, realistic, and timely z Management: Ensure excellence in agency management to carry out the NRCs strategic objective

Reactor Oversight Process Strategic Performance Areas Safety Cornerstones Baseline Inspection Performance Indicator Results Results Significance Significance Threshold Threshold Action Matrix Regulatory Response

Examples of Baseline Inspections z Equipment Alignment ~80 hrs/yr z Triennial Fire Protection ~200 hrs every 3 yrs z Operator Response ~125 hrs/yr z Emergency Preparedness ~80 hrs/yr z Rad Release Controls ~110 hrs every 2 yrs z Worker Radiation Protection ~90 hrs/yr z Corrective Action Program ~250 hrs every 2 yrs z Corrective Action Case Reviews ~60 hrs/yr

CORNERSTONE PERFORMANCE INDICATORS (PIs)

Initiating Events - Unplanned Scrams

- Scrams with Complications

- Unplanned Power Changes Mitigating Systems - Safety System Functional Failure

- Emergency AC Power System

- High Pressure Injection System

- Heat Removal System

- Residual Heat Removal System

- Cooling Water Systems Barrier Integrity - Reactor Coolant Activity

- Reactor Coolant System Leakage Emergency Preparedness - Drill/Exercise Performance

- ERO Drill Participation

- Alert and Notification System Occupational Radiation Safety - Occupational Exposure Control Public Radiation Safety - RETS/ODCM Radiological Effluent Safeguards - Physical Protection (not publicly available)

Oconee Nuclear Station CY2007 Inspection Related Activities z ~ 2400 Hours of Direct Inspection Related Activities z Resident Inspector Daily Inspections z Problem Identification & Resolution Inspection z Emergency Preparedness Inspection z Operator Licensing Exam z Operator Requalification Inspection z Radiation Protection Inspections z Independent Spent Fuel Storage Installation Inspections z Inservice Inspection Activities z 95002 Supplemental Inspection

Performance Thresholds Safety Significance Green: Very low safety issue White: Low-to-moderate safety issue Yellow: Substantial safety issue Red: High safety issue NRC Inspection Efforts Green: Only Baseline Inspections White: May increase NRC oversight Yellow: Increased NRC oversight Red: Increased NRC oversight and other NRC actions

Action Matrix Concept Licensee Regulatory Degraded Multiple/Rep. Unacceptable Response Response Cornerstone Degraded Performance Cornerstone Increasing Safety Significance Increasing NRC Inspection Efforts Increasing NRC/Licensee Management Involvement Increasing Regulatory Actions

Oconee Nuclear Station CY2007 Annual Assessment Summary z Duke Energy operated Oconee Nuclear Station in a manner that preserved public health and safety z All cornerstone objectives were met for the most recent quarter of the assessment cycle z 95002 Supplemental Inspection of a Mitigating Systems Cornerstone White Performance Indicator (PI) and two White Findings (August 2007)

Oconee Nuclear Station CY2007 Assessment Results z 4th Qtr 2006 - White Mitigating Systems Cornerstone PI (Emergency AC Power System)resulting from an extended Keowee Unit 2 forced outage [Affected All Three Units 1st and 2nd Qtr 2007 returned Green in 3rd Qtr 2007 due to modeling/calculational changes]

z Two White Mitigating Systems Cornerstone Inspection Findings:

3/4 3rd Qtr 2006 - Failure to effectively control maintenance activities, and therefore assess and manage the risk associated with breaching the standby shutdown facility (SSF) external flood protection barrier [Affected All Three Units 1st - 3rd Qtr 2007closed during 95002 Supplemental Inspection]

3/4 4th Qtr 2006 - Failure to implement adequate foreign material exclusion (FME) controls for the Unit 3 reactor building emergency sump (RBES) [Affected Unit 3 1st - 3rd Qtr 2007 closed during 95002 Supplemental Inspection]

Oconee Nuclear Station CY2007 Assessment Results z 1st and 2nd Qtr 2007 - All Three Units in Degraded Cornerstone Column of Action Matrix:

3/4 Due to overlap of White emergency AC power system PI and White SSF flood protection barrier finding 3/4 Note: Unit 3 Degraded performance was also reflective of the aforementioned White finding (or PI) in conjunction with White Unit 3 RBES FME finding z 3rd Qtr 2007 - Units 1 and 2 in Regulatory Response Column of Action Matrix:

3/4 Due to White SSF flood protection barrier finding(PI returned to Green) z 3rd Qtr 2007 - Unit 3 in Degraded Cornerstone Column of Action Matrix:

3/4 Due to White SSF flood protection barrier finding in conjunction with White Unit 3 RBES FME finding z 4th Qtr 2007 - All Three Units in Licensee Response Column of Action Matrix:

3/4 Due to findings and PIs being Green

Oconee CY2007 Action Matrix Cornerstone Issue 1st Qtr07 2nd Qtr07 3rd Qtr07 4th Qtr07 All Units All Units Unit 3 All Units Degraded Degraded Degraded Licensee Cornerstone Cornerstone Cornerstone Response Units 1,2 Regulatory

Response

Mitigating Systems White Finding Units 1,2,3 Units 1,2,3 Units 1,2,3

- Units 1, 2, 3 Failure to Manage Risk Associated with [closed during Standby Shutdown Facility Flood 95002]

Barrier Breach Mitigating Systems White PI - Units 1,2,3 Units 1,2,3 Units 1, 2, 3... Emergency AC [returned to Power System Green]

Mitigating Systems White Finding Unit 3 Unit 3 Unit 3

- Unit 3 Failure to Maintain Foreign Material Exclusion in Unit [closed during 3 Reactor Building Emergency 95002]

Sump

National Summary of Plant Performance Status at End of CY2007 Licensee Response 87 Regulatory Response 8 Degraded Cornerstone 8 Multiple/Repetitive Degraded Cornerstone 1 Unacceptable 0 Total 104

National Summary Performance Indicator Results (at end of CY 2007)

Green 1942 White 8 Yellow 1 Red 0 Total Inspection Findings (CY 2007)

Green 759 White 9 Yellow 2 Red 0

Oconee Nuclear Station CY2008 Scheduled Inspection Activities z Resident Inspector Daily Inspections z Component Design Bases Inspection z Triennial Fire Protection Inspection z Operator Licensing Examinations and Requalification Inspections z Safety Issue Inspections Concerning RCS Dissimilar Metal Butt Welds and Implementation of B.5.b Mitigation Strategies z Modifications and Heat Sink Inspections z Radiation Protection and Emergency Preparedness Inspections z Inservice Inspection Activities

Oconee Nuclear Station Annual Assessment Meeting CY 2007 Oconee Management Response and Remarks

Contacting the NRC z Report an emergency (301) 816-5100 (call collect) z Report a safety concern:

(800) 695-7403 Allegation@nrc.gov z General information or questions www.nrc.gov Select About NRC for Public Affairs

Reference Sources z Reactor Oversight Process http://www.nrc.gov/NRR/OVERSIGHT/ASSESS/index.html z Public Electronic Reading Room http://www.nrc.gov/reading-rm.html z Public Document Room 1-800-397-4209 (Toll Free)