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Licensee's General Comments: Based on feedback received from a review of Mitigating Systems Performance Index (MSPI) data supplied to the Nuclear Regulatory Commission (NRC) and the Idaho National Laboratory (INL), an error was noted in the Unit 2 Train A EDG unplanned UA baseline (UABLU). This PRA value was corrected to match the approved site MSPI Bases document.
| Unplanned Scrams per 7000 Critical Hrs | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Unplanned scrams | 2.0 | 0 | 0 | 0 | 0 | 2.0 | 0 | 0 |
| Critical hours | 1735.9 | 2159.0 | 2184.0 | 2208.0 | 2209.0 | 2097.8 | 1753.1 | 2208.0 |
| Indicator value | 1.7 | 1.7 | 1.7 | 1.7 | 0 | 1.6 | 1.7 | 1.7 |
Licensee Comments: none
| Unplanned Power Changes per 7000 Critical Hrs | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Unplanned power changes | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Critical hours | 1735.9 | 2159.0 | 2184.0 | 2208.0 | 2209.0 | 2097.8 | 1753.1 | 2208.0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Licensee Comments: none
| Unplanned Scrams with Complications | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Scrams with complications | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Licensee Comments: none
| Safety System Functional Failures (PWR) | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Safety System Functional Failures | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Licensee Comments: none
| Mitigating Systems Performance Index, Emergency AC Power System | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| UAI (ΔCDF) | -2.50E-07 | -3.00E-07 | -3.60E-07 | -3.60E-07 | -3.60E-07 | -3.00E-07 | -3.00E-07 | -3.00E-07 |
| URI (ΔCDF) | -8.80E-08 | -1.30E-06 | -1.20E-06 | -1.20E-06 | -1.20E-06 | -1.20E-06 | -1.20E-06 | -1.20E-06 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -3.38E-07 | -1.60E-06 | -1.56E-06 | -1.56E-06 | -1.56E-06 | -1.50E-06 | -1.50E-06 | -1.50E-06 |
Licensee Comments:
3Q/08: Changed PRA Parameter(s).
2Q/08: Changed PRA Parameter(s).
1Q/08: Changed PRA Parameter(s).
4Q/07: Changed PRA Parameter(s).
3Q/07: Changed PRA Parameter(s).
2Q/07: Changed PRA Parameter(s).
1Q/07: Changed PRA Parameter(s).
4Q/06: Changed PRA Parameter(s).
3Q/06: Changed PRA Parameter(s).
2Q/06: Changed PRA Parameter(s).
| Mitigating Systems Performance Index, High Pressure Injection System | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| UAI (ΔCDF) | -7.40E-08 | -7.40E-08 | -7.40E-08 | -7.40E-08 | -7.40E-08 | -7.40E-08 | -7.40E-08 | -7.50E-08 |
| URI (ΔCDF) | -3.50E-08 | -3.40E-08 | -3.40E-08 | -3.30E-08 | -3.20E-08 | -3.10E-08 | -3.30E-08 | -3.30E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -1.09E-07 | -1.08E-07 | -1.08E-07 | -1.07E-07 | -1.06E-07 | -1.05E-07 | -1.07E-07 | -1.08E-07 |
Licensee Comments: none
| Mitigating Systems Performance Index, Heat Removal System | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| UAI (ΔCDF) | -8.10E-08 | -8.10E-08 | -8.10E-08 | -8.10E-08 | -8.10E-08 | -8.40E-08 | -1.50E-07 | -1.50E-07 |
| URI (ΔCDF) | -1.40E-07 | -1.50E-07 | -1.40E-07 | -1.40E-07 | -1.40E-07 | -1.40E-07 | -1.30E-07 | -1.20E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -2.21E-07 | -2.31E-07 | -2.21E-07 | -2.21E-07 | -2.21E-07 | -2.24E-07 | -2.80E-07 | -2.70E-07 |
Licensee Comments: none
| Mitigating Systems Performance Index, Residual Heat Removal System | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| UAI (ΔCDF) | -7.50E-09 | -7.50E-09 | -7.50E-09 | -7.50E-09 | -7.50E-09 | -3.40E-10 | -3.90E-10 | -3.90E-10 |
| URI (ΔCDF) | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.20E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -2.95E-08 | -2.95E-08 | -2.95E-08 | -2.95E-08 | -2.95E-08 | -2.23E-08 | -2.24E-08 | -2.24E-08 |
Licensee Comments: none
| Mitigating Systems Performance Index, Cooling Water Systems | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| UAI (ΔCDF) | 3.30E-07 | 3.30E-07 | 3.30E-07 | 3.30E-07 | 3.30E-07 | 3.20E-07 | -2.20E-07 | -2.20E-07 |
| URI (ΔCDF) | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.10E-07 | -2.20E-07 | -2.20E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 1.10E-07 | 1.10E-07 | 1.10E-07 | 1.10E-07 | 1.10E-07 | 1.10E-07 | -4.40E-07 | -4.40E-07 |
Licensee Comments: none
| Reactor Coolant System Activity | 10/06 | 11/06 | 12/06 | 1/07 | 2/07 | 3/07 | 4/07 | 5/07 | 6/07 | 7/07 | 8/07 | 9/07 |
| Maximum activity | 0.002210 | 0.000180 | 0.000196 | 0.000207 | 0.000294 | 0.000233 | 0.000244 | 0.000364 | 0.000340 | 0.000303 | 0.000540 | 0.000669 |
| Technical specification limit | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Indicator value | 0.5 | 0 | 0 | 0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Reactor Coolant System Activity | 10/07 | 11/07 | 12/07 | 1/08 | 2/08 | 3/08 | 4/08 | 5/08 | 6/08 | 7/08 | 8/08 | 9/08 |
| Maximum activity | 0.000472 | 0.000714 | 0.001580 | 0.005850 | 0.002980 | 0.017700 | 0.000191 | 0.000211 | 0.000241 | 0.000282 | 0.000295 | 0.000287 |
| Technical specification limit | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Indicator value | 0.1 | 0.2 | 0.4 | 1.3 | 0.7 | 3.9 | 0 | 0 | 0.1 | 0.1 | 0.1 | 0.1 |
Licensee Comments: none
| Reactor Coolant System Leakage | 10/06 | 11/06 | 12/06 | 1/07 | 2/07 | 3/07 | 4/07 | 5/07 | 6/07 | 7/07 | 8/07 | 9/07 |
| Maximum leakage | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Reactor Coolant System Leakage | 10/07 | 11/07 | 12/07 | 1/08 | 2/08 | 3/08 | 4/08 | 5/08 | 6/08 | 7/08 | 8/08 | 9/08 |
| Maximum leakage | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Licensee Comments: none
| Drill/Exercise Performance | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Successful opportunities | 0 | 0 | 0 | 26.0 | 52.0 | 22.0 | 25.0 | 36.0 |
| Total opportunities | 0 | 0 | 0 | 26.0 | 52.0 | 24.0 | 26.0 | 37.0 |
| Indicator value | 93.6% | 93.6% | 93.6% | 94.6% | 95.8% | 95.3% | 95.6% | 97.6% |
Licensee Comments: none
| ERO Drill Participation | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Participating Key personnel | 75.0 | 76.0 | 73.0 | 70.0 | 72.0 | 81.0 | 76.0 | 76.0 |
| Total Key personnel | 75.0 | 77.0 | 77.0 | 72.0 | 73.0 | 88.0 | 78.0 | 79.0 |
| Indicator value | 100.0% | 98.7% | 94.8% | 97.2% | 98.6% | 92.0% | 97.4% | 96.2% |
Licensee Comments: none
| Alert & Notification System | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Successful siren-tests | 208 | 215 | 215 | 212 | 213 | 213 | 211 | 426 |
| Total sirens-tests | 216 | 216 | 216 | 216 | 216 | 216 | 216 | 432 |
| Indicator value | 98.3% | 98.4% | 98.3% | 98.4% | 99.0% | 98.7% | 98.3% | 98.4% |
Licensee Comments: none
| Occupational Exposure Control Effectiveness | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| 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 | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| RETS/ODCM occurrences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Licensee Comments: none
Action Matrix Summary |
Inspection Findings Summary |
PI Summary |
Reactor Oversight Process
Last Modified: November 26, 2008