ML081980646
| ML081980646 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/10/2008 |
| From: | NRC/RGN-II |
| To: | |
| References | |
| Download: ML081980646 (21) | |
Text
Oconee Nuclear Station Oconee Nuclear Station Annual Assessment Meeting Annual Assessment Meeting Reactor Oversight Program Reactor Oversight Program -- CY 2007 CY 2007 Nuclear Regulatory Commission Nuclear Regulatory Commission -- Region II Region II Seneca, South Carolina Seneca, South Carolina April 10, 2008 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 Acting Director Division of Reactor Projects (Vacant)
Deputy Director Kriss Kennedy Director Division of Reactor Safety David Ayres Deputy Director Kathy Weaver Acting Branch Chief Oconee Resident Inspectors Daniel Rich George Hutto Eric Riggs Project Engineers Robert Carroll, SPE Eric Stamm, PE Regional Specialists
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 Safety Cornerstones Baseline Inspection Results Significance Threshold Action Matrix Significance Threshold Performance Indicator Results Regulatory Response Strategic Performance Areas Safety Cornerstones Baseline Inspection Results Significance Threshold Action Matrix Significance Threshold Performance Indicator Results Regulatory Response Strategic Performance Areas
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
-- RETS/ODCM Radiological Effluent RETS/ODCM Radiological Effluent Public Radiation Safety Public Radiation Safety PERFORMANCE INDICATORS (PIs)
PERFORMANCE INDICATORS (PIs)
CORNERSTONE CORNERSTONE
-- Physical Protection (not publicly available)
Physical Protection (not publicly available)
Safeguards Safeguards
-- Occupational Exposure Control Occupational Exposure Control Occupational Radiation Safety Occupational Radiation Safety
-- Drill/Exercise Performance Drill/Exercise Performance
-- ERO Drill Participation ERO Drill Participation
-- Alert and Notification System Alert and Notification System Emergency Preparedness Emergency Preparedness
-- Reactor Coolant Activity Reactor Coolant Activity
-- Reactor Coolant System Leakage Reactor Coolant System Leakage Barrier Integrity Barrier Integrity
-- Safety System Functional Failure Safety System Functional Failure
-- Emergency AC Power System Emergency AC Power System
-- High Pressure Injection System High Pressure Injection System
-- Heat Removal System Heat Removal System
-- Residual Heat Removal System Residual Heat Removal System
-- Cooling Water Systems Cooling Water Systems Mitigating Systems Mitigating Systems
-- Unplanned Scrams Unplanned Scrams
-- Scrams with Complications Scrams with Complications
-- Unplanned Power Changes Unplanned Power Changes Initiating Events Initiating Events
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
Response
Regulatory
Response
Degraded Cornerstone Multiple/Rep.
Degraded Cornerstone Unacceptable Performance 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:
3/43rd 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]
3/44th 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
Unit 3
[closed during 95002]
Unit 3 Unit 3 Mitigating Systems White Finding
- Unit 3 Failure to Maintain Foreign Material Exclusion in Unit 3 Reactor Building Emergency Sump
[returned to Green]
Units 1,2,3 Units 1,2,3 Mitigating Systems White PI -
Units 1, 2, 3... Emergency AC Power System Units 1,2,3
[closed during 95002]
Units 1,2,3 Units 1,2,3 Mitigating Systems White Finding
- Units 1, 2, 3 Failure to Manage Risk Associated with Standby Shutdown Facility Flood Barrier Breach All Units Licensee
Response
Unit 3 Degraded Cornerstone Units 1,2 Regulatory
Response
All Units Degraded Cornerstone All Units Degraded Cornerstone 4th Qtr07 3rd Qtr07 2nd Qtr07 1st Qtr07 Cornerstone Issue Oconee CY2007 Action Matrix
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)
Performance Indicator Results (at end of CY 2007)
Green 1942 1942 White 88 Yellow 11 Red 00 Total Inspection Findings (CY 2007)
Total Inspection Findings (CY 2007)
Green 759 759 White 99 Yellow 22 Red 00
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 Oconee Nuclear Station Annual Assessment Meeting Annual Assessment Meeting CY 2007 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)