ML040230703
| ML040230703 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 01/14/2004 |
| From: | Dominion |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML040230703 (30) | |
Text
1 Dominion Management Meeting Dominion Management Meeting Station Performance Station Performance Surry Power Station January 14, 2004
2
ROP Status
Surry Reactor Trips
Radioactive Material Control
Management Perspective AAGENDA GENDA
3 Surry Unit 1 Safety Performance Indicators Based on Data through December 31, 2003 Unplanned Scrams Scrams With Loss of Normal Heat Removal Unplanned Power Changes Emergency AC Power System Unavailability Reactor Coolant System Specific Activity Drill/Exercise Performance Occupational Exposure Control Effectiveness RETS/ODCM Radiological Effluents Protected Area Equipment High Pressure Injection System Unavailability Reactor Coolant System Leakage ERO Drill Participation Personnel Screening Program Heat Removal System Unavailability Containment Leakage Alert and Notification System FFD/Personn el Reliability Program Residual Heat Removal System Unavailability Safety System Functional Failures No Findings 4th Quarter 1 Finding 4th Quarter No Findings 4th Quarter No Findings 4th Quarter No Findings 4th Quarter No Findings 4th Quarter No Findings 4th Quarter Initiating Events Mitigating Systems Barrier Integrity Emergency Preparedness Occupational Radiation Safety Public Radiation Safety Physical Protection Reactor Safety Radiation Safety Safeguards Surry Unit 1 Inspection Results Based on Data through December 31, 2003
4 Surry Unit 2 Safety Performance Indicators Based on Data through December 31, 2003 Unplanned Scrams Scrams With Loss of Normal Heat Removal Unplanned Power Changes Emergency AC Power System Unavailability Reactor Coolant System Specific Activity Drill/Exercise Performance Occupational Exposure Control Effectiveness RETS/ODCM Radiological Effluents Protected Area Equipment High Pressure Injection System Unavailability Reactor Coolant System Leakage ERO Drill Participation Personnel Screening Program Heat Removal System Unavailability Containment Leakage Alert and Notification System FFD/Personn el Reliability Program Residual Heat Removal System Unavailability Safety System Functional Failures No Findings 4th Quarter 1 Finding 4th Quarter No Findings 4th Quarter No Findings 4th Quarter No Findings 4th Quarter No Findings 4th Quarter No Findings 4th Quarter Initiating Events Mitigating Systems Barrier Integrity Emergency Preparedness Occupational Radiation Safety Public Radiation Safety Physical Protection Reactor Safety Radiation Safety Safeguards Surry Unit 2 Inspection Results Based on Data through December 31, 2003
Status
Unit 1: three manual and one automatic trip
Unit 2: one manual and one automatic trip
Actions to Improve Performance
Equipment Reliability Initiatives
Zero Tolerance for Equipment Failure
Single Point Vulnerability Reviews
Aging / Obsolescence Program
Improved Corrective Actions to Prevent Recurrence
6 Reactor Trips Reactor Trips Unit 1 Manual Trip - 1C RCP Motor Lower Radial Bearing Failure, January 14, 2003
Cause:
Loss of oil with a failure of the warning indicator
Corrective Action:
Verified level switches work properly
Improved lower oil pan design
Improved design of drain line
7 Reactor Trips Reactor Trips Unit 1 Auto Trip - Difficulties with Manual SG Level Control, January 25, 2003
Cause:
Inadequate modification of feed regulating valve
Corrective Action:
Corrected modification
Improved design to correct issue of low power level secondary plant performance
Four startups have validated success
8 Main Feed Main Feed Reg Reg Valve Valve
9 Reactor Trips Reactor Trips Unit 2 Auto Trip - Failure of an Electrical Conduit Bushing, January 25, 2003
Cause:
Misaligned conduit bushing on protective relay circuit
Corrective Action:
Leads repaired and verified extent of condition
Similar issue found & repaired at NAPS before failure
10 Reactor Trip Reactor Trip
Failure of an Electrical Conduit Bushing, January 25, 2003
11 Reactor Trips Reactor Trips Unit 1 Manual Trip - Rod Mis-alignment During Physics Testing, June 13, 2003
Cause:
Misaligned pin connector
Corrective Action:
Revised procedures to visually inspect connectors
12 Reactor Trips Reactor Trips Unit 1 and 2 Manual Trips During Adverse Weather from Hurricane Isabel - Loss of Power to the Intake Structure, September 18, 2003
Cause:
Overhead electrical distribution system was exposed to adverse weather conditions
13 Hurricane Isabel Hurricane Isabel
14 Hurricane Isabel Hurricane Isabel Phase B wire contacted pole during high winds
15 Hurricane Isabel Hurricane Isabel
16 Hurricane Isabel Hurricane Isabel Wildlife protection cover blown off allowing damage to the transformer bushing
17 Reactor Trips Reactor Trips
To Summarize the Reactor Trips:
Equipment Reliability is the Top Focus Area of Surry & Dominion Nuclear
Additional Initiatives will Reap Further Improvements
Improved Corrective Actions to Prevent Recurrence
Expect Green Performance after this quarter
18 Emergency AC Power System Emergency AC Power System
Corrective Actions for all EDGs:
Changed oil
Replaced power packs
Enhanced Maintenance Procedures Previous presentation to the NRC discussed in detail the April 2001 EDG 3 abnormal wear of piston wrist pins and piston carrier bearings
19 Emergency AC Power System Emergency AC Power System
Lube Oil Modification on all EDGs
Air Start Modification on all EDGs
Improved lube oil analysis program
Assigned additional resources Emergency Diesel issues were reviewed collectively and additional corrective actions were implemented
20 Lube Oil Modification Lube Oil Modification
21 Air Start Modification Air Start Modification
22 Improved Performance Improved Performance 0
100 200 300 400 500 600 700 800 900 1000 2001 2002 2003 Number of Unavailability Hours Hours of Unplanned Unavailability Hours of Unplanned Unavailability
23 Improved Performance Improved Performance 0
1 2
3 4
5 6
7 8
Last 100 Starts 50 Starts 20 Starts Number of Start Failures Number of Demand Start Failures / Total Starts Number of Demand Start Failures / Total Starts
24 Unit 1 Emergency AC Unit 1 Emergency AC Performance Performance Thresholds: White >2.5% Yellow >5% Red >10%
Projected
25 Unit 2 Emergency AC Unit 2 Emergency AC Performance Performance Thresholds: White >2.5% Yellow >5% Red >10%
Projected
26 Radioactive Material Control Radioactive Material Control Significance:
4 Issues within the Last 8 Quarters
All Issues had a Dose Impact < 0.005 rem TEDE
Recognized as a Negative Trend
27 Corrective Actions Corrective Actions
Conducted aggressive station and contractor training to ensure awareness and expectations
Tightened controls on release of material from RCA
Strengthening of RCA tool control and accountability
Enhanced vehicle search process
28 Management Perspective Management Perspective We Are:
Aware of our past issues
Concerned with current improvements and overall performance
Implementing proactive actions and showing progress in several areas
29 Management Perspective Management Perspective
Common Cause Evaluation
To ensure continued improvement a Common Cause Evaluation will be conducted
Evaluation will review collective issues to determine the organizational causes
Team consisting of two directors and one member from outside with equivalent or greater nuclear management insight
30 Questions Questions