Calvert Cliffs 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 | 1.0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 |
| Critical hours | 2031.4 | 2208.0 | 2209.0 | 2159.0 | 2184.0 | 2133.6 | 2209.0 | 849.7 |
| Indicator value | 1.8 | 1.8 | 1.8 | 0.8 | 0 | 0.8 | 0.8 | 0.9 |
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 | 0 | 0 | 0 | 0 | 0 | 0 |
| Critical hours | 2031.4 | 2208.0 | 2209.0 | 2159.0 | 2184.0 | 2133.6 | 2209.0 | 849.7 |
| Indicator value | 0.9 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 1 | 0 |
| Indicator value | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
Licensee Comments:
4Q/11: LER 2011-003-00
| 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) | 1.49E-07 | 5.95E-08 | 7.66E-08 | 7.32E-08 | -3.38E-08 | -1.22E-08 | -8.64E-09 | 9.44E-09 |
| URI (ΔCDF) | 4.37E-08 | -1.17E-07 | -1.17E-07 | -1.17E-07 | -1.69E-07 | -3.76E-08 | -3.63E-08 | -3.67E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 1.90E-07 | -5.70E-08 | -4.10E-08 | -4.40E-08 | -2.00E-07 | -5.00E-08 | -4.50E-08 | -2.70E-08 |
Licensee Comments:
3Q/11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
2Q/11: Changed PRA Parameter(s). 10-11-11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
1Q/11: Revisions effective Q2 2011: PRA parameters due to model update and UA Base Lines due to change in maintenance strategy from work in outage to on-line.
| 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) | 2.52E-08 | 4.31E-08 | 7.86E-08 | 4.45E-08 | -3.60E-08 | -3.96E-08 | -4.45E-09 | 4.91E-08 |
| URI (ΔCDF) | -6.52E-08 | -6.55E-08 | -6.27E-08 | -5.31E-08 | -3.43E-08 | -3.35E-08 | -3.42E-08 | -3.86E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -4.00E-08 | -2.20E-08 | 1.60E-08 | -8.60E-09 | -7.00E-08 | -7.30E-08 | -3.90E-08 | 1.00E-08 |
Licensee Comments:
3Q/11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
2Q/11: Changed PRA Parameter(s). 10-11-11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
1Q/11: Revisions effective Q2 2011: PRA parameters due to model update and UA Base Lines due to change in maintenance strategy from work in outage to on-line.
| 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) | 7.40E-09 | 6.15E-09 | 1.39E-09 | -1.91E-09 | -7.61E-09 | -7.61E-09 | -7.61E-09 | -7.59E-09 |
| URI (ΔCDF) | -6.34E-08 | -6.25E-08 | -6.08E-08 | -5.02E-08 | -2.13E-08 | -2.19E-08 | -2.22E-08 | -2.46E-08 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | -5.60E-08 | -5.60E-08 | -5.90E-08 | -5.20E-08 | -2.90E-08 | -2.90E-08 | -3.00E-08 | -3.20E-08 |
Licensee Comments:
1Q/11: 10-11-11:Allocation of Unit cross-connect valve to affected Unit (Ref: CR-2011-008850)
1Q/11: Revisions effective Q2 2011: PRA parameters due to model update and UA Base Lines due to change in maintenance strategy from work in outage to on-line.
4Q/10: 10-11-11: Allocation of Unit cross-connect valve to affected Unit (Ref: CR-2011-008850)
3Q/10: 10-11-11: Allocation of Unit cross-connect valve to affected Unit (Ref: CR-2011-008850)
2Q/10: 10-11-11: Allocation of Unit cross-connect valve to affected Unit (Ref: CR-2011-008850)
| 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) | 1.40E-07 | 1.45E-07 | 1.76E-07 | 1.73E-07 | -4.29E-09 | -3.89E-09 | 3.23E-08 | 5.50E-08 |
| URI (ΔCDF) | -5.87E-09 | -5.50E-09 | -5.59E-09 | -4.58E-09 | -4.26E-09 | -4.17E-09 | -4.15E-09 | -5.25E-09 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 1.30E-07 | 1.40E-07 | 1.70E-07 | 1.70E-07 | -8.60E-09 | -8.10E-09 | 2.80E-08 | 5.00E-08 |
Licensee Comments:
2Q/11: Changed PRA Parameter(s). 10-11-11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
1Q/11: Revisions effective Q2 2011: PRA parameters due to model update and UA Base Lines due to change in maintenance strategy from work in outage to on-line.
| 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) | 1.25E-07 | 1.24E-07 | 1.25E-07 | 4.13E-08 | 1.61E-07 | 1.34E-07 | 1.91E-07 | 1.98E-07 |
| URI (ΔCDF) | 8.79E-08 | 8.78E-08 | 8.77E-08 | 8.78E-08 | 2.75E-08 | 2.54E-08 | -2.27E-07 | -2.27E-07 |
| PLE | NO | NO | NO | NO | NO | NO | NO | NO |
| Indicator value | 2.10E-07 | 2.10E-07 | 2.10E-07 | 1.30E-07 | 1.90E-07 | 1.60E-07 | -3.60E-08 | -3.00E-08 |
Licensee Comments:
4Q/11: Two CWS2 AOVs added due to current inability to validate their exclusion during the original MSPI scoping. CR-2011-008863
2Q/11: Changed PRA Parameter(s). 10-11-11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
2Q/11: 10-11-11: Correction to PRA and planned baseline unavailability data due to errors made when entering updated PRA model data in March 2011 (Ref: CR-2011-008850)
1Q/11: Revisions effective Q2 2011: PRA parameters due to model update and UA Base Lines due to change in maintenance strategy from work in outage to on-line and for preventive maintenance optimization.
1Q/11: Revisions effective Q2 2011: PRA parameters due to model update and UA Base Lines due to change in maintenance strategy from work in outage to on-line and for preventive maintenance optimization.
3Q/10: 4-11-12: Two CWS2 AOVs added due to current inability to validate their exclusion during the original MSPI scoping.
2Q/10: 4-11-12: Two CWS2 AOVs added due to current inability to validate their exclusion during the original MSPI scoping.
| 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 | 0.003390 | 0.004800 | 0.005030 | 0.005990 | 0.005840 | 0.005910 | 0.005480 | 0.006660 | 0.007140 | 0.006540 | 0.004740 | 0.004530 |
| Technical specification limit | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 |
| Indicator value | 0.3 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.5 | 0.7 | 0.7 | 1.3 | 0.9 | 0.9 |
| 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 | 0.004750 | 0.004730 | 0.004790 | 0.005080 | 0.005420 | 0.004790 | 0.005870 | 0.005920 | 0.006670 | 0.006150 | 0.005650 | N/A |
| 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 | 1.0 | 0.9 | 1.0 | 1.0 | 1.1 | 1.0 | 1.2 | 1.2 | 1.3 | 1.2 | 1.1 | N/A |
Licensee Comments:
3/12: Per NEI 99-02 "If in the entire month, plant conditions do not require RCS activity to be calculated, the data field is left blank for that month." Calvert Cliffs Unit 1 was in a refueling outage and shutdown for the entire month of March, 2012.
| 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 | 0.168 | 0.224 | 0.194 | 0.140 | 0.230 | 0.100 | 0.120 | 0.070 | 0.080 | 0.080 | 0.080 | 0.090 |
| 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 | 1.7 | 2.2 | 1.9 | 1.4 | 2.3 | 1.0 | 1.2 | 0.7 | 0.8 | 0.8 | 0.8 | 0.9 |
| 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 | 0.080 | 0.130 | 0.090 | 0.080 | 0.130 | 0.100 | 0.130 | 0.100 | 0.140 | 0.090 | 0.080 | N/A |
| 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 | 0.8 | 1.3 | 0.9 | 0.8 | 1.3 | 1.0 | 1.3 | 1.0 | 1.4 | 0.9 | 0.8 | N/A |
Licensee Comments:
3/12: Per NEI 99-02 "If in the entire month, plant conditions do not require RCS activity to be calculated, the data field is left blank for that month." Calvert Cliffs Unit 1 was in a refueling outage and shutdown for the entire month of March, 2012.
| Drill/Exercise Performance | 2Q/10 | 3Q/10 | 4Q/10 | 1Q/11 | 2Q/11 | 3Q/11 | 4Q/11 | 1Q/12 |
| Successful opportunities | 23.0 | 76.0 | 53.0 | 4.0 | 58.0 | 30.0 | 56.0 | 5.0 |
| Total opportunities | 23.0 | 78.0 | 54.0 | 4.0 | 59.0 | 30.0 | 57.0 | 5.0 |
| Indicator value | 95.5% | 95.4% | 97.2% | 97.1% | 97.7% | 98.5% | 98.4% | 98.4% |
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 | 87.0 | 86.0 | 88.0 | 85.0 | 88.0 | 83.0 | 84.0 | 86.0 |
| Total Key personnel | 87.0 | 86.0 | 88.0 | 85.0 | 88.0 | 83.0 | 84.0 | 86.0 |
| 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 | 948 | 948 | 940 | 949 | 945 | 889 | 946 | 947 |
| Total sirens-tests | 949 | 949 | 949 | 949 | 949 | 949 | 949 | 949 |
| Indicator value | 99.7% | 99.7% | 99.7% | 99.7% | 99.6% | 98.1% | 98.2% | 98.2% |
Licensee Comments:
3Q/11: ANS test was misinterpreted and incorrectly reported in 3Q2011. The system engineer caught the error and Licensing corrected in CDE in 1Q2012. CR-2012-000541.
| 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 | 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 | 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