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Licensee's General Comments: none
| Unplanned Scrams per 7000 Critical Hrs | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Unplanned scrams | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 |
| Critical hours | 2209.0 | 2159.0 | 2184.0 | 2208.0 | 1169.4 | 2145.1 | 2184.0 | 2208.0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 0.9 | 0.9 | 0.9 |
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 | 2209.0 | 2159.0 | 2184.0 | 2208.0 | 1169.4 | 2145.1 | 2184.0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator value | 0.0 | 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) | -2.00E-07 | -2.00E-07 | 1.60E-07 | 1.50E-07 | 1.70E-07 | 1.70E-07 | -2.00E-07 | -2.90E-07 |
| URI (ΔCDF) | -1.30E-06 | -1.30E-06 | -1.40E-06 | -1.40E-06 | -1.40E-06 | -1.30E-06 | -1.30E-06 | 6.80E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -1.50E-06 | -1.50E-06 | -1.24E-06 | -1.25E-06 | -1.23E-06 | -1.13E-06 | -1.50E-06 | 3.90E-07 |
Licensee Comments:
3Q/08: The risk cap is not invoked.
2Q/08: Risk Cap Invoked. Revised all quarterly data within the 3 yr reporting window for the following corrections. Planned unavailable hours due to SSPS testing on U1 were removed from the U2 indicator and vice versa. Unavailable hours included while the applicable unit was not critical were subtracted. Also, baseline planned unavailability was updated for these same conditions. These changes made in accordance with Sequoyah PER 135288. BPK7/11/08
1Q/08: Risk Cap Invoked. An error has been identified in baseline planned unavailability and critical hours. The baseline planned unavailability will increase once corrected adding further margin in the UAI derivation. This correction will be made prior to next quarter's reporting.
4Q/07: Risk Cap Invoked. The following changes have been made during the reporting quarter. PRA parameters for FVURC, FVUAP, UAP updated to reflect numbers in the basis document. Failure records 1057, 1088, and 1006 have been changed as a result of a re-evaluation.
3Q/07: Risk Cap Invoked. failure record 1088 updated for MSPI failure no. Failed components were outside the monitoring boundary. BPK 1/16/08
| 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) | 2.60E-08 | 3.60E-08 | 6.20E-08 | 1.10E-07 | 1.10E-07 | 9.30E-08 | 8.40E-08 | 9.20E-08 |
| URI (ΔCDF) | 5.00E-07 | 5.00E-07 | 5.00E-07 | 5.00E-07 | -1.70E-07 | -1.70E-07 | -1.70E-07 | -1.70E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 5.26E-07 | 5.36E-07 | 5.62E-07 | 6.10E-07 | -6.00E-08 | -7.70E-08 | -8.60E-08 | -7.80E-08 |
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) | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.20E-08 | -2.30E-08 | -2.00E-08 | -2.00E-08 | -2.00E-08 |
| URI (ΔCDF) | -6.60E-08 | -6.40E-08 | -6.40E-08 | -6.40E-08 | -8.90E-08 | -6.60E-08 | -6.40E-08 | -6.40E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -8.80E-08 | -8.60E-08 | -8.60E-08 | -8.60E-08 | -1.12E-07 | -8.60E-08 | -8.40E-08 | -8.40E-08 |
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) | 9.10E-08 | 8.80E-08 | 1.50E-07 | 1.90E-07 | 1.90E-07 | 1.90E-07 | 2.60E-07 | 2.50E-07 |
| URI (ΔCDF) | 1.30E-07 | 1.30E-07 | 1.30E-07 | -3.70E-07 | -3.70E-07 | -3.70E-07 | -3.70E-07 | -3.70E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 2.21E-07 | 2.18E-07 | 2.80E-07 | -1.80E-07 | -1.80E-07 | -1.80E-07 | -1.10E-07 | -1.20E-07 |
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) | -3.00E-06 | -3.10E-06 | -3.10E-06 | -3.10E-06 | -3.10E-06 | -3.00E-06 | -3.10E-06 | -3.10E-06 |
| URI (ΔCDF) | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 | -2.20E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -3.22E-06 | -3.32E-06 | -3.32E-06 | -3.32E-06 | -3.32E-06 | -3.22E-06 | -3.32E-06 | -3.32E-06 |
Licensee Comments:
3Q/08: Changed PRA Parameter(s). Adjusted planned unavailability baselines for non-routine planned maintenance on ERCW pumps.
| 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 | 0.006689 | 0.006602 | 0.007064 | 0.007125 | 0.007427 | 0.007719 | 0.007894 | 0.007921 | 0.007870 | 0.007976 | 0.008524 | 0.008710 |
| Technical specification limit | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Indicator value | 1.9 | 1.9 | 2.0 | 2.0 | 2.1 | 2.2 | 2.3 | 2.3 | 2.2 | 2.3 | 2.4 | 2.5 |
| 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 | 0.006488 | 0.001952 | 0.001923 | 0.003438 | 0.002020 | 0.002169 | 0.002079 | 0.002129 | 0.002289 | 0.002971 | 0.003110 | 0.002837 |
| Technical specification limit | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Indicator value | 1.9 | 0.6 | 0.5 | 1.0 | 0.6 | 0.6 | 0.6 | 0.6 | 0.7 | 0.8 | 0.9 | 0.8 |
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 | 0.050 | 0.050 | 0.040 | 0.030 | 0.030 | 0.030 | 0.050 | 0.070 | 0.080 | 0.080 | 0.070 | 0.080 |
| 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 | 0.5 | 0.5 | 0.4 | 0.3 | 0.3 | 0.3 | 0.5 | 0.7 | 0.8 | 0.8 | 0.7 | 0.8 |
| 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 | 0.060 | 0.010 | 0.020 | 0.010 | 0.020 | 0.020 | 0.020 | 0.050 | 0.040 | 0.040 | 0.030 | 0.040 |
| 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 | 0.6 | 0.1 | 0.2 | 0.1 | 0.2 | 0.2 | 0.2 | 0.5 | 0.4 | 0.4 | 0.3 | 0.4 |
Licensee Comments: none
| Drill/Exercise Performance | 4Q/06 | 1Q/07 | 2Q/07 | 3Q/07 | 4Q/07 | 1Q/08 | 2Q/08 | 3Q/08 |
| Successful opportunities | 44.0 | 0 | 24.0 | 10.0 | 30.0 | 4.0 | 11.0 | 42.0 |
| Total opportunities | 48.0 | 0 | 26.0 | 10.0 | 32.0 | 4.0 | 12.0 | 43.0 |
| Indicator value | 94.4% | 94.0% | 93.8% | 93.5% | 95.0% | 94.9% | 94.7% | 94.3% |
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 | 81.0 | 75.0 | 82.0 | 93.0 | 88.0 | 83.0 | 73.0 | 87.0 |
| Total Key personnel | 81.0 | 76.0 | 82.0 | 93.0 | 88.0 | 83.0 | 75.0 | 87.0 |
| Indicator value | 100.0% | 98.7% | 100.0% | 100.0% | 100.0% | 100.0% | 97.3% | 100.0% |
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 | 855 | 750 | 854 | 779 | 964 | 754 | 753 | 751 |
| Total sirens-tests | 864 | 756 | 864 | 864 | 972 | 756 | 756 | 756 |
| Indicator value | 99.2% | 99.2% | 99.0% | 96.7% | 96.8% | 97.0% | 97.1% | 99.4% |
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 | 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 | 0 | 0 | 0 | 0 | 0 | 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