United States Nuclear Regulatory Commission - Protecting People and the Environment

Surry 1 – Quarterly Performance Indicators

2Q/2017 Performance Indicators

The solid trend line represents the current reporting period.

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Unplanned Scrams per 7000 Critical Hrs 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Unplanned scrams 0 1.0 0 0 0 0 0 0
Critical hours 1952.3 1363.6 2183.0 2184.0 2208.0 1736.7 2159.0 2184.0
                 
Indicator value 0 1.0 1.0 0.9 0.9 0 0 0

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Unplanned Power Changes per 7000 Critical Hrs 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Unplanned power changes 0 0 0 0 0 1.0 0 0
Critical hours 1952.3 1363.6 2183.0 2184.0 2208.0 1736.7 2159.0 2184.0
                 
Indicator value 0 0 0 0 0 0.8 0.8 0.8

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Unplanned Scrams with Complications 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
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

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Safety System Functional Failures (PWR) 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Safety System Functional Failures 0 0 0 0 1 0 0 0
                 
Indicator value 1 1 0 0 1 1 1 1

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Mitigating Systems Performance Index, Emergency AC Power System 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
UAI (ΔCDF) -2.49E-09 -4.87E-09 -4.88E-09 -4.55E-09 -4.55E-09 -4.70E-09 -4.70E-09 -4.70E-09
URI (ΔCDF) -2.27E-08 -9.54E-08 -9.42E-08 -9.46E-08 -9.43E-08 -9.33E-08 -9.33E-08 -9.29E-08
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -2.50E-08 -1.00E-07 -9.90E-08 -9.90E-08 -9.90E-08 -9.80E-08 -9.80E-08 -9.80E-08

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Mitigating Systems Performance Index, High Pressure Injection System 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
UAI (ΔCDF) -9.71E-10 -9.82E-10 -1.06E-09 -1.06E-09 -1.06E-09 -1.06E-09 -1.06E-09 -1.06E-09
URI (ΔCDF) -6.25E-09 -6.55E-09 -6.37E-09 -6.40E-09 -6.27E-09 -6.16E-09 -5.93E-09 -5.96E-09
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -7.20E-09 -7.50E-09 -7.40E-09 -7.50E-09 -7.30E-09 -7.20E-09 -7.00E-09 -7.00E-09

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Mitigating Systems Performance Index, Heat Removal System 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
UAI (ΔCDF) -2.31E-09 -2.61E-09 -2.60E-09 -2.80E-09 -3.01E-09 -3.83E-09 -4.62E-09 -3.37E-09
URI (ΔCDF) -1.85E-08 -1.95E-08 -2.00E-08 -2.05E-08 -2.05E-08 -2.00E-08 -1.89E-08 -2.00E-08
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -2.10E-08 -2.20E-08 -2.30E-08 -2.30E-08 -2.30E-08 -2.40E-08 -2.40E-08 -2.30E-08

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Mitigating Systems Performance Index, Residual Heat Removal System 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
UAI (ΔCDF) -1.41E-10 -1.36E-10 -1.36E-10 -1.36E-10 -1.36E-10 -1.38E-10 -1.38E-10 -1.38E-10
URI (ΔCDF) -9.46E-10 -9.46E-10 -9.55E-10 -9.36E-10 -9.46E-10 -9.67E-10 -9.76E-10 -9.76E-10
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -1.10E-09 -1.10E-09 -1.10E-09 -1.10E-09 -1.10E-09 -1.10E-09 -1.10E-09 -1.10E-09

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Mitigating Systems Performance Index, Cooling Water Systems 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
UAI (ΔCDF) 3.12E-09 2.98E-09 3.01E-09 3.03E-09 2.98E-09 2.96E-09 2.96E-09 7.92E-10
URI (ΔCDF) -5.83E-09 -5.76E-09 -5.24E-09 -6.03E-09 -6.27E-09 -6.97E-09 -1.14E-08 -1.18E-08
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -2.70E-09 -2.80E-09 -2.20E-09 -3.00E-09 -3.30E-09 -4.00E-09 -8.50E-09 -1.10E-08

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Reactor Coolant System Activity 7/15 8/15 9/15 10/15 11/15 12/15 1/16 2/16 3/16 4/16 5/16 6/16
Maximum activity 0.000573 0.000576 0.000710 0.000620 0.000813 0.000903 0.000789 0.000840 0.000893 0.000943 0.000895 0.001120
Technical specification limit 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
                         
Indicator value 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Reactor Coolant System Activity 7/16 8/16 9/16 10/16 11/16 12/16 1/17 2/17 3/17 4/17 5/17 6/17
Maximum activity 0.001110 0.001090 0.001070 0.002690 0.000775 0.000652 0.000568 0.000628 0.000633 0.000650 0.001070 0.000722
Technical specification limit 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
                         
Indicator value 0.1 0.1 0.1 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

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Reactor Coolant System Leakage 7/15 8/15 9/15 10/15 11/15 12/15 1/16 2/16 3/16 4/16 5/16 6/16
Maximum leakage 0.720 0.670 0.840 0.880 0.090 0.090 0.120 0.080 0.070 0.070 0.070 0.070
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 7.2 6.7 8.4 8.8 0.9 0.9 1.2 0.8 0.7 0.7 0.7 0.7
Reactor Coolant System Leakage 7/16 8/16 9/16 10/16 11/16 12/16 1/17 2/17 3/17 4/17 5/17 6/17
Maximum leakage 0.070 0.070 0.070 0.080 0.140 0.110 0.100 0.100 0.090 0.100 0.080 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 0.7 0.7 0.7 0.8 1.4 1.1 1.0 1.0 0.9 1.0 0.8 0.8

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Drill/Exercise Performance 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Successful opportunities 35.0 20.0 39.0 45.0 21.0 24.0 37.0 33.0
Total opportunities 35.0 20.0 39.0 46.0 21.0 24.0 37.0 34.0
                 
Indicator value 99.1% 99.1% 100.0% 99.6% 99.6% 99.6% 99.6% 99.2%

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ERO Drill Participation 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Participating Key personnel 157.0 165.0 175.0 176.0 183.0 168.0 156.0 147.0
Total Key personnel 157.0 165.0 175.0 176.0 183.0 168.0 156.0 147.0
                 
Indicator value 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

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Alert & Notification System 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Successful siren-tests 568 497 568 497 568 426 567 496
Total sirens-tests 568 497 568 497 568 426 568 497
                 
Indicator value 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 99.9%

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Occupational Exposure Control Effectiveness 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
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

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RETS/ODCM Radiological Effluent 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
RETS/ODCM occurrences 0 0 0 0 0 0 0 0
                 
Indicator value 0 0 0 0 0 0 0 0

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Although the Security Cornerstone is included in the Reactor Oversight Process assessment program, the Commission has decided that specific information related to findings and performance indicators pertaining to the Security Cornerstone will not be publicly available to ensure that security information is not provided to a possible adversary. Other than the fact that a finding or performance indicator is Green or Greater-Than-Green, security related information will not be displayed on the public web page.





 
 
 
 

Current data as of: July 26, 2017

Page Last Reviewed/Updated Wednesday, June 07, 2017