Oconee 1
1Q/2012 Performance Indicators
Licensee's General Comments: none
| Unplanned Scrams per 7000 Critical Hrs | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Unplanned scrams | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Critical hours | 2184.0 | 2170.9 | 2209.0 | 1976.6 | 553.6 | 2208.0 | 2209.0 | 2183.0 |
| Indicator value | 0 | 0.9 | 0.8 | 0.8 | 1.0 | 0 | 0 | 0 |
Licensee Comments: none
| Unplanned Power Changes per 7000 Critical Hrs | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Unplanned power changes | 0 | 0 | 1.0 | 1.0 | 0 | 0 | 0 | 0 |
| Critical hours | 2184.0 | 2170.9 | 2209.0 | 1976.6 | 553.6 | 2208.0 | 2209.0 | 2183.0 |
| Indicator value | 0 | 0 | 0.8 | 1.6 | 2.0 | 2.0 | 1.0 | 0 |
Licensee Comments: none
| Unplanned Scrams with Complications | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Scrams with complications | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Licensee Comments: none
| Safety System Functional Failures (PWR) | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Safety System Functional Failures | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
Licensee Comments:
3Q/11: Unit 1 LER 269/2011-05, Reactor Protection System Overpower Flux/Flow Imbalance Channels Inoperable
| Mitigating Systems Performance Index, Emergency AC Power System | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| UAI (ΔCDF) | -2.18E-07 | 3.52E-07 | 3.75E-07 | 6.36E-07 | 5.98E-07 | 4.57E-07 | 5.01E-07 | -2.76E-08 |
| URI (ΔCDF) | -1.86E-06 | -2.04E-06 | ||||||
| PLE | N/A | N/A | N/A | N/A | N/A | N/A | NO | NO |
| Indicator value | -1.40E-06 | -2.10E-06 |
Licensee Comments:
1Q/12: Changed PRA Parameter(s). Grayed unckecked MSPI & URI being investigated, no errors in Deriavtion Reports
4Q/11: Changed PRA Parameter(s).
3Q/11: Changed PRA Parameter(s).
2Q/11: Changed PRA Parameter(s).
1Q/11: Changed PRA Parameter(s).
4Q/10: Changed PRA Parameter(s).
3Q/10: Changed PRA Parameter(s).
2Q/10: Changed PRA Parameter(s).
| Mitigating Systems Performance Index, High Pressure Injection System | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| UAI (ΔCDF) | -2.72E-08 | -2.72E-08 | -2.72E-08 | -2.67E-08 | -2.58E-08 | -3.16E-08 | -3.16E-08 | -6.19E-08 |
| URI (ΔCDF) | 2.50E-07 | 2.50E-07 | 2.50E-07 | 2.50E-07 | 2.50E-07 | 1.50E-07 | 1.50E-07 | -1.73E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 2.20E-07 | 2.20E-07 | 2.20E-07 | 2.20E-07 | 2.20E-07 | 1.20E-07 | 1.20E-07 | -2.40E-07 |
Licensee Comments: none
| Mitigating Systems Performance Index, Heat Removal System | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| UAI (ΔCDF) | 8.44E-08 | 1.72E-07 | 1.82E-07 | 1.81E-07 | 1.41E-07 | 1.21E-07 | 9.94E-08 | 9.57E-08 |
| URI (ΔCDF) | -1.88E-07 | -1.88E-07 | 1.03E-07 | 1.03E-07 | 5.19E-07 | 5.19E-07 | 5.19E-07 | 5.19E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -1.00E-07 | -1.60E-08 | 2.80E-07 | 2.80E-07 | 6.60E-07 | 6.40E-07 | 6.20E-07 | 6.10E-07 |
Licensee Comments: none
| Mitigating Systems Performance Index, Residual Heat Removal System | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| UAI (ΔCDF) | 1.95E-07 | 1.59E-07 | 1.57E-07 | 4.44E-07 | 5.06E-07 | 5.07E-07 | 3.04E-07 | 1.45E-07 |
| URI (ΔCDF) | -1.25E-07 | -1.25E-07 | -1.25E-07 | -1.25E-07 | -1.25E-07 | -1.25E-07 | -1.25E-07 | -1.25E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 7.00E-08 | 3.40E-08 | 3.20E-08 | 3.20E-07 | 3.80E-07 | 3.80E-07 | 1.80E-07 | 1.90E-08 |
Licensee Comments: none
| Mitigating Systems Performance Index, Cooling Water Systems | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| UAI (ΔCDF) | -1.27E-08 | -1.35E-08 | -2.94E-08 | -2.51E-08 | -2.30E-08 | -2.41E-08 | -3.38E-09 | -9.75E-09 |
| URI (ΔCDF) | -4.20E-08 | -4.20E-08 | -4.20E-08 | -4.20E-08 | -4.20E-08 | -4.20E-08 | -4.20E-08 | -4.20E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -5.50E-08 | -5.60E-08 | -7.10E-08 | -6.70E-08 | -6.50E-08 | -6.60E-08 | -4.50E-08 | -5.20E-08 |
Licensee Comments: none
| Reactor Coolant System Activity | 4/10 | 5/10 | 6/10 | 7/10 | 8/10 | 9/10 | 10/10 | 11/10 | 12/10 | 1/11 | 2/11 | 3/11 |
| Maximum activity | 0.000418 | 0.000356 | 0.000321 | 0.000347 | 0.000893 | 0.000788 | 0.000618 | 0.000731 | 0.000750 | 0.000868 | 0.000844 | 0.000849 |
| Technical specification limit | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Indicator value | 0 | 0 | 0 | 0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Reactor Coolant System Activity | 4/11 | 5/11 | 6/11 | 7/11 | 8/11 | 9/11 | 10/11 | 11/11 | 12/11 | 1/12 | 2/12 | 3/12 |
| Maximum activity | N/A | N/A | 0.000334 | 0.000542 | 0.000300 | 0.000266 | 0.000229 | 0.000315 | 0.000375 | 0.000279 | 0.000295 | 0.000289 |
| Technical specification limit | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Indicator value | N/A | N/A | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Licensee Comments: none
| Reactor Coolant System Leakage | 4/10 | 5/10 | 6/10 | 7/10 | 8/10 | 9/10 | 10/10 | 11/10 | 12/10 | 1/11 | 2/11 | 3/11 |
| Maximum leakage | 0.044 | 0.028 | 0.037 | 0.032 | 0.047 | 0.028 | 0.039 | 0.038 | 0.031 | 0.022 | 0.076 | 0.121 |
| Technical specification limit | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
| Indicator value | 0.4 | 0.3 | 0.4 | 0.3 | 0.5 | 0.3 | 0.4 | 0.4 | 0.3 | 0.2 | 0.8 | 1.2 |
| Reactor Coolant System Leakage | 4/11 | 5/11 | 6/11 | 7/11 | 8/11 | 9/11 | 10/11 | 11/11 | 12/11 | 1/12 | 2/12 | 3/12 |
| Maximum leakage | N/A | N/A | 0.180 | 0.107 | 0.124 | 0.058 | 0.314 | 0.036 | 0.041 | 0.039 | 0.044 | 0.038 |
| Technical specification limit | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
| Indicator value | N/A | N/A | 1.8 | 1.1 | 1.2 | 0.6 | 3.1 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
Licensee Comments: none
| Drill/Exercise Performance | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Successful opportunities | 4.0 | 24.0 | 13.0 | 28.0 | 16.0 | 39.0 | 18.0 | 48.0 |
| Total opportunities | 4.0 | 27.0 | 15.0 | 29.0 | 16.0 | 40.0 | 18.0 | 50.0 |
| Indicator value | 96.4% | 96.3% | 95.2% | 94.7% | 95.2% | 95.1% | 96.2% | 95.5% |
Licensee Comments: none
| ERO Drill Participation | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Participating Key personnel | 131.0 | 127.0 | 132.0 | 127.0 | 130.0 | 136.0 | 135.0 | 133.0 |
| Total Key personnel | 138.0 | 141.0 | 137.0 | 138.0 | 140.0 | 139.0 | 140.0 | 133.0 |
| Indicator value | 94.9% | 90.1% | 96.4% | 92.0% | 92.9% | 97.8% | 96.4% | 100.0% |
Licensee Comments: none
| Alert & Notification System | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Successful siren-tests | 1752 | 1753 | 1752 | 1753 | 1751 | 1753 | 1687 | 1753 |
| Total sirens-tests | 1755 | 1755 | 1752 | 1755 | 1755 | 1755 | 1690 | 1755 |
| Indicator value | 99.8% | 99.8% | 99.8% | 99.9% | 99.9% | 99.9% | 99.8% | 99.8% |
Licensee Comments: none
| Occupational Exposure Control Effectiveness | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| High radiation area occurrences | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| Very high radiation area occurrences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Unintended exposure occurrences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 |
Licensee Comments: none
| RETS/ODCM Radiological Effluent | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| RETS/ODCM occurrences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Licensee Comments: none
Security information not publicly available.
Action Matrix Summary |
Inspection Findings Summary |
PI Summary |
Reactor Oversight Process
Last Modified: April 24, 2012