ML031490713
| ML031490713 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 04/17/2003 |
| From: | Carpenter C NRC/NRR/DIPM/IIPB |
| To: | |
| References | |
| RIC 2003 | |
| Download: ML031490713 (9) | |
Text
RIC 2003 Building on the Davis-Besse Experience Session T1 NRCs Davis-Besse Task Force Cindi Carpenter, Chief Inspection Program Branch Division of Inspection Program Management Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission April 17, 2003
United States Nuclear Regulatory Commission USNRC RIC, April 2003
2 Background
Davis-Besse Task Force Report issued Sept 30, 2002, contained 51 recommendations to improve regulatory process Stakeholders believe that ROP was not effective in identifying vessel head degradation Improvements to NRC Inspection Program
United States Nuclear Regulatory Commission USNRC RIC, April 2003 3
Major Themes for NRC Inspection Program Need to better integrate inspection program and operating experience Need to direct inspectors into areas of known generic concerns and provide periodic inspector training on current technical issues Need to follow up on licensee responses to generic communications Need to maintain a questioning attitude Communicate expectations for inspector follow up
United States Nuclear Regulatory Commission USNRC RIC, April 2003 4
Several Recommendations Pointed Towards Need to Enhance NRC Inspection of Corrective Action Programs Licensee corrective actions associated with industry operating experience Licensee actions associated with NRC generic communications Licensee corrective actions for longstanding/repetitive problems Deferred modifications or deferred corrective actions Assess production influences on outage work scope.
United States Nuclear Regulatory Commission USNRC RIC, April 2003 5
Specific Activities in Response to Lessons Learned Recommendations NRC senior management review team prioritized high priority recommendations and categorized into 4 groups:
Assessment of stress corrosion cracking Assessment and Integration of Operating Experience Evaluation of Inspection, Assessment, and Project Management Guidance Assessment of Barrier Integrity Requirements Remaining recommendations integrated into operational planning activities
United States Nuclear Regulatory Commission USNRC RIC, April 2003 6
Assessment of Stress Corrosion Cracking Evaluate development of improved inspection guidance for RPV head and VHP nozzles Establish technical basis for new inspection guidance Evaluate current BACC programs and whether additional inspection guidance or regulatory requirements are necessary Ensure NRC inspection guidance provides effective oversight of licensee RPV head inspections and BACC programs
United States Nuclear Regulatory Commission USNRC RIC, April 2003 7
Assessment and Integration of Operating Experience Formed inter-Office operating experience task group Identify Agency needs and objectives in operating experience and changes necessary Need to better integrate inspection program and operating experience in the short and long term Need to direct inspectors into areas of known generic concerns
United States Nuclear Regulatory Commission USNRC RIC, April 2003 8
Inspection, Assessment, and Project Management Guidance Ensure sufficient inspections are conducted of:
Long-standing, unresolved problems that dont progress to a finding Corrective actions phased over several years or Refueling Outages Deferred modifications or deferred corrective actions Enhance guidance to pursue issues and problems identified during inspector plant status reviews Reinforce expectation for maintaining a questioning attitude Management of organization and resources for plants in extended shutdown
United States Nuclear Regulatory Commission USNRC RIC, April 2003 9
Assessment of Barrier Integrity Requirements Review and improve leakage detection requirements and inspection guidance Perform comprehensive review and evaluation of plant experiences, current leakage detections systems, and state-of-the-art systems Review and improve barrier integrity performance indicators:
Improve existing BI PI based on current requirements and measurements Evaluate feasibility of an additional BI PI to track number, duration, and rate of primary system leaks Evaluate feasibility of establishing a risk-informed BI PI Need to look at inter-relationships between regulations, PIs, & inspection guidance