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Home > Nuclear Reactors > Operating Reactors > Oversight > Reactor Oversight Process

Watts Bar 1

3Q/2008 Performance Indicators

Licensee's General Comments: none



Link to Notes

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 0 1.0 2.0
Critical hours 757.3 2159.0 2184.0 2208.0 2209.0 1164.2 2004.3 1930.2
                 
Indicator value 2.3 2.3 1.0 0 0 0 0.9 2.9


Licensee Comments:

2Q/08: 2QCY2008 corrected iaw PER 152109 (Failed to count forced outage as a downpower). This change does not affect the color of the indicator.



Link to Notes

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 1.0 2.0 2.0
Critical hours 757.3 2159.0 2184.0 2208.0 2209.0 1164.2 2004.3 1930.2
                 
Indicator value 0 0 0 0 0 0.9 2.8 4.8

Licensee Comments:

2Q/08: 2QCY2008 corrected iaw PER 152109 (Failed to count forced outage as a downpower). This change does not affect the color of the indicator.





Link to Notes

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





Link to Notes

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 1 0 0 0 0 0 1 0
                 
Indicator value 2 1 1 1 0 0 1 1

Licensee Comments: none





Link to Notes

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) 2.10E-08 2.10E-09 2.90E-08 1.90E-08 1.80E-08 1.90E-08 2.80E-08 3.50E-08
URI (ΔCDF) -9.30E-08 -9.30E-08 -1.30E-07 -1.30E-07 -1.30E-07 -1.30E-07 -1.30E-07 -1.30E-07
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -7.20E-08 -9.09E-08 -1.01E-07 -1.11E-07 -1.12E-07 -1.11E-07 -1.02E-07 -9.50E-08

Licensee Comments: none





Link to Notes

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) -4.10E-09 1.50E-08 2.20E-08 1.60E-08 1.50E-08 1.50E-08 2.10E-08 8.70E-09
URI (ΔCDF) -2.50E-07 -2.50E-07 -2.10E-07 -2.10E-07 -2.10E-07 -1.80E-07 -1.50E-07 -1.50E-07
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -2.54E-07 -2.35E-07 -1.88E-07 -1.94E-07 -1.95E-07 -1.65E-07 -1.29E-07 -1.41E-07

Licensee Comments:

1Q/08: 1Q2008 - Corrected iaw PER 152229 - Failure Report 495 on CCP 1B failure to start during blackout testing was marked 'no' instead of 'yes' for MPSI failure. (1Q2008 - Change to the MSPI High Pressure Injection System performance indicator for the month of March 2008. During a review of previous data, it was determined that the CCP 1B fail-to-start during blackout testing in RFO8 had not been entered. This change does not affect the color of the indicator.





Link to Notes

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) 2.50E-07 1.90E-07 2.20E-07 2.00E-07 2.10E-07 2.10E-07 1.60E-07 2.20E-07
URI (ΔCDF) 1.70E-07 1.70E-07 1.70E-07 1.70E-07 1.70E-07 1.70E-07 -2.90E-07 1.70E-07
PLE NO NO NO NO NO NO NO NO
                 
Indicator value 4.20E-07 3.60E-07 3.90E-07 3.70E-07 3.80E-07 3.80E-07 -1.30E-07 3.90E-07

Licensee Comments: none





Link to Notes

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) 7.90E-08 1.10E-07 1.10E-07 6.50E-08 6.70E-08 -9.50E-09 -6.70E-09 -3.50E-09
URI (ΔCDF) -2.50E-07 -2.50E-07 -2.50E-07 -2.50E-07 -2.50E-07 -2.50E-07 -2.50E-07 -2.50E-07
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -1.71E-07 -1.40E-07 -1.40E-07 -1.85E-07 -1.83E-07 -2.60E-07 -2.57E-07 -2.54E-07

Licensee Comments: none





Link to Notes

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) 2.30E-08 2.30E-08 2.60E-08 2.80E-08 5.80E-09 4.30E-09 3.00E-09 3.20E-08
URI (ΔCDF) -8.00E-09 -8.00E-09 -8.00E-09 -8.00E-09 -8.00E-09 -8.00E-09 -8.00E-09 4.50E-09
PLE NO NO NO NO NO NO NO NO
                 
Indicator value 1.50E-08 1.50E-08 1.80E-08 2.00E-08 -2.20E-09 -3.70E-09 -5.00E-09 3.65E-08

Licensee Comments: none





Link to Notes

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 N/A N/A 0.019700 0.011260 0.012140 0.012930 0.022820 0.010070 0.010800 0.013820 0.014690 0.015080
Technical specification limit 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
                         
Indicator value N/A N/A 7.4 4.2 4.6 4.9 8.6 3.8 4.1 5.2 5.5 5.7
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 0.015470 0.016290 0.018200 0.016100 0.015600 N/A 0.003098 0.002874 0.003022 0.003092 0.003093 0.003252
Technical specification limit 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
                         
Indicator value 5.8 6.1 6.9 6.1 5.9 N/A 1.2 1.1 1.1 1.2 1.2 1.2

Licensee Comments: none





Link to Notes

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 N/A N/A 0.020 0.010 0.020 0.010 0.010 0.010 0.010 0.010 0.030 0.020
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 0.2 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.3 0.2
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 0.020 0.030 0.030 0.020 0.010 0.010 0.010 0.030 0.030 0.040 0.020
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 0.2 0.3 0.3 0.2 0.1 0.1 0.1 0.3 0.3 0.4 0.2

Licensee Comments: none





Link to Notes

Drill/Exercise Performance 4Q/06 1Q/07 2Q/07 3Q/07 4Q/07 1Q/08 2Q/08 3Q/08
Successful opportunities 2.0 21.0 4.0 22.0 23.0 7.0 47.0 18.0
Total opportunities 2.0 23.0 4.0 24.0 24.0 8.0 48.0 18.0
                 
Indicator value 96.3% 95.2% 95.2% 93.7% 93.0% 93.3% 95.2% 95.4%

Licensee Comments: none





Link to Notes

ERO Drill Participation 4Q/06 1Q/07 2Q/07 3Q/07 4Q/07 1Q/08 2Q/08 3Q/08
Participating Key personnel 65.0 66.0 58.0 65.0 68.0 64.0 62.0 69.0
Total Key personnel 68.0 67.0 58.0 67.0 70.0 66.0 64.0 69.0
                 
Indicator value 95.6% 98.5% 100.0% 97.0% 97.1% 97.0% 96.9% 100.0%

Licensee Comments: none





Link to Notes

Alert & Notification System 4Q/06 1Q/07 2Q/07 3Q/07 4Q/07 1Q/08 2Q/08 3Q/08
Successful siren-tests 788 692 784 782 887 689 690 687
Total sirens-tests 792 693 792 792 891 693 693 693
                 
Indicator value 99.0% 99.3% 99.1% 99.3% 99.3% 99.2% 99.3% 99.4%

Licensee Comments: none





Link to Notes

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





Link to Notes

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





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Last Modified: November 26, 2008