ML102250042
| ML102250042 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 08/13/2010 |
| From: | Glenn Dentel Reactor Projects Branch 1 |
| To: | |
| References | |
| Download: ML102250042 (21) | |
Text
U.S.NRC United States Nuclear Commission Protecting People and theEnvironment R. E. Ginna Nuclear Power Plant Supplemental Inspection Exit and Regulatory Performance Meeting Meeting Slides August 13, 2010
U.S.NRC United States Nuclear Commission Agenda Protecting People and the Environment
" Opening Remarks
" Supplemental Inspection 95002 Exit tel) Constellation Response
~ Regulatory Performance Meeting
.. Closing Remarks
.. Questions from the Public
" Adjourn Meeting
- "'\\~ U.S.NR C United States Nuclear Regulatory Commission NRC Strategic Plan Goals Protecting People and the Environment w Safety - Ensure adequate protection of public health and safety and the environment w Security - Ensure adequate protection in the secure use and management of radioactive materials
performance.
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, C~mmiSSion NRC AnnuaI Assessment Su rn rna ry
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Protecting People and the EnvIronment
" Ginna operated the plant safely and in a manner that preserved the public health and safety and protected the environment during the assessment period (2009).
" Ginna was in the Degraded Cornerstone column of the NRCs Action Matrix.
" Ginna had a moderate degradation in safety
NRC Significance Threshold Summary C":~s,!-!:,?':~"~m~
Protecting People and the Environment Performance Indicators (PI)
Baseline Inspection
" White Requires additional NRC oversight Requires more NRC oversight Red Requires most NRC oversight Inspection Findings iii Very low safety issue III White Low to moderate safety issue w
Substantial safety issue w* Red High safety issue
U.S.NRC United States Nuclear Commission Ginna Pis and Findings Protecting People andthe Environment January 1 through December 31, 2009
" 1 White PI
.. 2 White inspection findings
-- 12 Green / Severity Level IV inspection findings
U.S.NRC Summary of Safety Significant United States Nuclear Commission Protecting People Ilnd the Environment Inspection Findings and Pis at Ginna
\\I. 1st gtr '09: White Finding for inadequate implementation of the Preventative Maintenance program for the TDAFW pump
.. 3rd gtr '09: White PI due to system reliability issues associated with TDAFW failures
\\I 4th gtr '09: White Finding for inadequate corrective actions to prevent reoccurrence of TDAFW issue
NRC Action Matrix Licensee Regulatory Multiple Repetitive II Degraded \\ I
Response
Response Cornerstone All Inputs are 1 or 2 White 2 White or 1 Green; Inputs; Yellow Input; Cornerstone Cornerstone Cornerstone Objectives Objectives Objectives Met wI Fully Met Fully Met Moderate Degradation in Safety Performance Degraded Cornerstone Multiple Yellow Inputs or 1 Red Input; Cornerstone Objectives Met wI Significant Degradation in Safety Performance
'------~
'----~
L----_~
Increasing safety significance Increasing NRC inspection efforts Increasing NRC/Licensee management involvement Increasing regulatory actions U.S.NRC United States Nuclear Commission Protecting People and the Environment Unacceptable Performance Overall Unacceptable Performance; Plants not permitted to Operate wlin this Column; Unacceptable Margin to Safety
U.S.NRC United States Nuclear Commission Supplemental Inspection Protecting People anti the Environment
.. Inspection Procedure 95002 (objectives):
To provide assurance that the root and contributing causes of individual and collective (multiple white inputs) risk-significant performance issues are understood.
To independently assess the extent of condition and extent of cause of individual and collective (multiple white inputs) risk-significant performance issues.
To independently determine if safety culture components caused or significantly contributed to the individual and collective (multiple white inputs) risk-significant performance issues.
To provide assurance that the licensee's corrective actions for risk significant performance issues are sufficient to address the root an contributing causes and prevent recurrence.
U.S.NRC United States Nuclear Commission Supplemental Inspection Protecting People and the Environment
" Inspection Procedure 95002 (requirements) t4. Covers Five Areas:
Problem Identification Root Cause, Extent of Condition and Extent of Cause Evaluation Corrective Actions Independently Assess of Extent of Condition and Cause Safety Culture
U.S.NRC United States Nuclear Commission Supplemental Inspection Protecting People and theEnvironment
" IP 95002 (June 28 - July 23, 2010):
4 Inspectors: 1 Senior Resident Inspector, 2 Project Engineers, and 1 Reactor Engineer Document Review Turbine-Driven Auxiliary Feedwater Pump walkdown Interviews, observations, and verification Related equipment walkdown Related issue review
U.S.NRC United States Nuclear Commission Supplemental Inspection Protecting PeOple and the Environment vl'Consteliation Evaluations Determined Root and Contributing Causes:
- Root Cause Analysis (RCAR) performed for each TDAFW failure and overspeed. Full Apparent Cause Evaluation for White PI
- RCAR & Common Cause Analysis (CCA) performed for collective issues
- Causes not fully identified at first opportunity but understood by second failure. First root cause analysis was narrowly focused. Addressed in 2nd and 3rd RCAR.
Equipment issues (control linkage / valve leakage / FME)
Organizational issues (critical investigation teams / process
U.S.NRC United States Nuclear Regulatory Commission Supplemental Inspection Protecting People and the b'nvironment
../ Constellation Evaluated the Generic I mplications of the failures:
- RCARs included extent of condition and extent of cause reviews
- RCARs & CCA of failures and collective assessment developed CAs to repair and upgrade the TDAFW and make changes to the investigation process and OE review.
- Site-wide initiatives in implementing process changes and enforcing in-place processes
- Observable results in migration of investigation proc
U.S.NRC United States Nuclear Regulatory Commission Supplemental Inspection Protecting People and the Environment
~Corrective Actions (CAs) Taken or Planned to Address Causes to Prevent Recurrence
- Corrective Actions to address the root causes Replacement of governor control linkage components Material changes to control valve stem Increased frequency of testing, stem inspections, and weekly exercise of the control valve Replacement of steam admission valves to upgraded design (future)
Changed problem investigation process / operations focused / inter departmental control and checks Changes to OE review process and applicability to process Changes to work management to require consistent application of the process to delete or IN/A' step{s)
U.S.NRC United States Nuclear Commission Supplemental Inspection Protecting People and the Environment
../ Observations:
No findings of significance, however:
- 1St RCAR narrowly focused. Improvements seen in follow-on RCARs
- DE Process changes still work in progress Expectations, work-flow, and documentation issues
- Issues regarding oversight group preparation to support effectiveness reviews
- Identified possibility of leakage past steam admission bypass valves
- Identified process weakness in DE input for medium and high risk work
- The challenge that remains is how effective the station is at implementing the corrective actions to ensure improved and sustainable performance
U.S.NRC United States Nuclear Commission Supplemental Inspection Protecting People and the Environment
" Summary:
No findings Causes understood; Extent of Condition and Cause Evaluated Correction Actions taken and planned are sufficient to address causes Safety Culture components were appropriately considered and addressed in the evaluations Independently assessed by team and generally agree with Constellation's assessment Will be documented in 05-244 / 2010007 report
U.S.NRC United States Nuclear Commission Protecting People and the bnvironment R. E. Ginna Nuclear Power Plant Response and Remarks
U.S.NRC United States Nuclear Commission Protecting People and the Environment R. E. Ginna Nuclear Power Plant Regulatory Performance Meeting
U.S.NRC United States Nuclear Commission Protecting People and the Environment I
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