River Bend 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 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 |
| Critical hours | 2184.0 | 2111.5 | 2209.0 | 1508.6 | 2184.0 | 2208.0 | 2154.0 | 2183.0 |
| Indicator value | 0.9 | 0 | 0 | 0 | 0 | 0 | 0.9 | 0.8 |
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 | 0 | 1.0 | 0 | 0 | 0 |
| Critical hours | 2184.0 | 2111.5 | 2209.0 | 1508.6 | 2184.0 | 2208.0 | 2154.0 | 2183.0 |
| Indicator value | 0.9 | 0.8 | 1.6 | 0.9 | 1.7 | 1.7 | 0.9 | 0.8 |
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 | 1.0 | 0 |
| Indicator value | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 1.0 |
Licensee Comments: none
| Safety System Functional Failures (BWR) | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Safety System Functional Failures | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
| Indicator value | 0 | 1 | 1 | 2 | 2 | 1 | 1 | 0 |
Licensee Comments: none
| 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) | 1.10E-08 | 8.95E-09 | 2.43E-08 | 2.31E-08 | 1.85E-08 | 1.59E-08 | 1.53E-08 | 1.45E-08 |
| URI (ΔCDF) | 1.57E-07 | 1.22E-07 | 6.74E-08 | 6.63E-08 | 6.71E-08 | 6.78E-08 | 3.07E-07 | 3.08E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 1.70E-07 | 1.30E-07 | 9.20E-08 | 8.90E-08 | 8.60E-08 | 8.40E-08 | 3.20E-07 | 3.20E-07 |
Licensee Comments:
4Q/11: 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) | 2.28E-09 | 2.28E-09 | 1.01E-08 | 9.64E-09 | 9.64E-09 | 9.37E-09 | 4.20E-09 | 5.81E-09 |
| URI (ΔCDF) | -2.96E-08 | -2.94E-08 | 2.47E-08 | 2.41E-08 | 2.82E-08 | 2.77E-08 | 1.10E-09 | 1.21E-09 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -2.70E-08 | -2.70E-08 | 3.50E-08 | 3.40E-08 | 3.80E-08 | 3.70E-08 | 5.30E-09 | 7.00E-09 |
Licensee Comments:
4Q/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, Heat Removal System | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| UAI (ΔCDF) | -2.16E-08 | -2.16E-08 | -1.35E-08 | -1.39E-08 | -1.32E-08 | -1.09E-08 | -4.23E-09 | 2.65E-09 |
| URI (ΔCDF) | -6.73E-08 | -6.69E-08 | 1.07E-07 | 9.53E-08 | 9.17E-08 | 8.81E-08 | 2.78E-08 | 5.21E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -8.90E-08 | -8.90E-08 | 9.40E-08 | 8.10E-08 | 7.80E-08 | 7.70E-08 | 2.40E-08 | 5.50E-08 |
Licensee Comments:
4Q/11: Changed PRA Parameter(s).
| 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) | -2.25E-08 | -2.25E-08 | -3.47E-08 | -3.47E-08 | -3.47E-08 | -3.47E-08 | -5.07E-08 | -3.95E-08 |
| URI (ΔCDF) | -7.84E-08 | -7.74E-08 | -7.69E-08 | -7.57E-08 | -7.50E-08 | -7.37E-08 | -1.25E-07 | -1.28E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -1.00E-07 | -1.00E-07 | -1.10E-07 | -1.10E-07 | -1.10E-07 | -1.10E-07 | -1.80E-07 | -1.70E-07 |
Licensee Comments:
4Q/11: Changed PRA Parameter(s).
| 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) | -2.64E-09 | -2.64E-09 | -2.64E-09 | -2.64E-09 | -2.64E-09 | -2.64E-09 | -1.56E-09 | -1.56E-09 |
| URI (ΔCDF) | -2.43E-08 | -2.43E-08 | -2.26E-08 | 3.41E-07 | 3.41E-07 | 3.41E-07 | 4.70E-07 | 4.70E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -2.70E-08 | -2.70E-08 | -2.50E-08 | 3.40E-07 | 3.40E-07 | 3.40E-07 | 4.70E-07 | 4.70E-07 |
Licensee Comments:
1Q/12: Risk Cap Invoked.
4Q/11: Changed PRA Parameter(s).
4Q/11: Risk Cap Invoked. Changed PRA Parameter(s).
4Q/11: Risk Cap Invoked.
| 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 | 0.000866 | 0.001880 | 0.001670 | 0.001640 | 0.001670 | 0.001540 | 0.001380 | 0.001520 | 0.001530 | 0.001400 | 0.000626 | 0.000658 |
| Technical specification limit | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Indicator value | 0.4 | 0.9 | 0.8 | 0.8 | 0.8 | 0.8 | 0.7 | 0.8 | 0.8 | 0.7 | 0.3 | 0.3 |
| 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 | 0.000583 | 0.000604 | 0.000572 | 0.000659 | 0.000491 | 0.000497 | 0.000500 | 0.000516 | 0.000658 | 0.000701 | 0.000534 | 0.000610 |
| Technical specification limit | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Indicator value | 0.3 | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.4 | 0.3 | 0.3 |
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 | 2.290 | 2.330 | 2.590 | 2.510 | 2.920 | 2.360 | 2.270 | 2.540 | 2.330 | 2.370 | 2.250 | 2.210 |
| Technical specification limit | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 |
| Indicator value | 7.6 | 7.8 | 8.6 | 8.4 | 9.7 | 7.9 | 7.6 | 8.5 | 7.8 | 7.9 | 7.5 | 7.4 |
| 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 | 2.100 | 2.290 | 2.080 | 2.080 | 2.080 | 2.110 | 2.940 | 2.090 | 2.340 | 2.090 | 2.120 | 2.550 |
| Technical specification limit | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 |
| Indicator value | 7.0 | 7.6 | 6.9 | 6.9 | 6.9 | 7.0 | 9.8 | 7.0 | 7.8 | 7.0 | 7.1 | 8.5 |
Licensee Comments: none
| Drill/Exercise Performance | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Successful opportunities | 54.0 | 43.0 | 10.0 | 24.0 | 33.0 | 98.0 | 30.0 | 46.0 |
| Total opportunities | 56.0 | 43.0 | 10.0 | 24.0 | 34.0 | 101.0 | 30.0 | 48.0 |
| Indicator value | 97.9% | 98.0% | 97.8% | 97.7% | 97.3% | 97.3% | 97.6% | 97.7% |
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 | 128.0 | 132.0 | 95.0 | 96.0 | 95.0 | 97.0 | 91.0 | 92.0 |
| Total Key personnel | 128.0 | 132.0 | 95.0 | 96.0 | 95.0 | 97.0 | 91.0 | 92.0 |
| Indicator value | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 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 | 1184 | 1201 | 1209 | 1207 | 1207 | 1207 | 1116 | 1201 |
| Total sirens-tests | 1209 | 1209 | 1209 | 1209 | 1209 | 1209 | 1116 | 1209 |
| Indicator value | 98.6% | 98.7% | 99.0% | 99.3% | 99.8% | 99.9% | 99.9% | 99.7% |
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 | 0 | 1 | 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 | 0 | 1 | 1 | 1 | 1 | 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