United States Nuclear Regulatory Commission - Protecting People and the Environment

Pilgrim 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 1.0 0 0 0 1.0 0 0 0
Critical hours 2151.7 2209.0 2137.9 2184.0 1918.2 2080.2 2098.0 1209.1
                 
Indicator value 2.8 2.8 1.8 0.8 0.8 0.8 0.8 1.0

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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 1.0 1.0 0 1.0 1.0 0
Critical hours 2151.7 2209.0 2137.9 2184.0 1918.2 2080.2 2098.0 1209.1
                 
Indicator value 0 0 0.9 1.6 1.7 2.5 2.5 1.9

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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 1.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0

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Safety System Functional Failures (BWR) 3Q/15 4Q/15 1Q/16 2Q/16 3Q/16 4Q/16 1Q/17 2Q/17
Safety System Functional Failures 0 0 0 2 0 1 1 4
                 
Indicator value 3 3 2 2 2 3 4 6

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Licensee Comments:
2Q/17: 2017-06 - LER 2017-007-00 "Potential Inoperability of SRV 3A" - Engineering analysis concluded SRV 3A to be operable. Therefore, it is not considered a SSFF.
1Q/17: 2017-01 - LER 2016-009-00 "HPCI Declared Inoperable" was evaluated by engineering and determined to not be a safety system functional failure. 2017-03 - LER 2017-001-00 - "Reactor Building Isolation Dampers Failed to Isolate"
4Q/16: LER 2016-005-00 - Evaluated to not be a reportable SSFF per NEI 99-02. LER 2016-008-00 is a SSFF due to inoperability of both EDGs.
2Q/16: LER 2016-001-00 and LER 2016-002-00
4Q/15: Licensee Event Report (LER) 2015-006-00 documented the Ultimate Heat Sink (UHS) temperature exceeded the Technical Specification limit resulting in the UHS and the Salt Service Water (SSW) System being declared inoperable. The LER was submitted pursuant to 10 CFR 50.73(a)(2)(v)(B) and (D), any event or condition that could have prevented the fulfillment of the safety function of structures or systems that are needed to remove residual heat and mitigate the consequences of an accident, respectively. As documented in the LER, an evaluation of a similar 2013 event determined the safety function of the UHS and SSW System was satisfied when the temperature exceeded the Technical Specification limit for a longer duration and higher value. The 2015 temperature excursion is bounded by that evaluation based on the lower maximum temperature recorded and the shorter duration of this excursion. Thus, this event is not counted as a safety system functional failure per NEI 99-02, Section 2.2.




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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) 3.78E-08 2.57E-08 1.68E-08 3.72E-08 3.79E-08 3.96E-08 1.36E-08 1.48E-08
URI (ΔCDF) 1.10E-07 1.11E-07 1.64E-07 1.66E-07 1.66E-07 1.97E-07 1.76E-07 1.74E-07
PLE NO NO NO NO NO NO NO NO
                 
Indicator value 1.50E-07 1.40E-07 1.80E-07 2.00E-07 2.00E-07 2.40E-07 1.90E-07 1.90E-07

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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) 5.48E-09 4.15E-09 -3.45E-09 -2.25E-09 -7.87E-10 2.60E-09 -1.32E-09 8.35E-10
URI (ΔCDF) -2.03E-08 -2.00E-08 -1.95E-08 -1.77E-08 -1.68E-08 -1.75E-08 -1.79E-08 -1.87E-08
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -1.50E-08 -1.60E-08 -2.30E-08 -2.00E-08 -1.80E-08 -1.50E-08 -1.90E-08 -1.80E-08

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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) 9.76E-09 5.10E-09 4.90E-09 3.66E-09 1.03E-08 8.69E-09 1.69E-09 3.41E-09
URI (ΔCDF) -1.55E-08 -1.54E-08 -1.52E-08 -1.46E-08 -1.31E-08 -1.25E-08 -1.23E-08 -1.31E-08
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -5.80E-09 -1.00E-08 -1.00E-08 -1.10E-08 -2.90E-09 -3.80E-09 -1.10E-08 -9.70E-09

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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) 1.60E-09 1.75E-09 9.94E-10 2.36E-09 2.61E-09 1.83E-09 3.32E-09 9.33E-10
URI (ΔCDF) -4.10E-09 -4.26E-09 -4.14E-09 -3.92E-09 -4.00E-09 -4.01E-09 -4.17E-09 -4.41E-09
PLE NO NO NO NO NO NO NO NO
                 
Indicator value -2.50E-09 -2.50E-09 -3.10E-09 -1.60E-09 -1.40E-09 -2.20E-09 -8.50E-10 -3.50E-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) 7.42E-09 7.68E-09 9.24E-09 9.10E-09 9.52E-09 9.98E-09 9.69E-09 1.08E-08
URI (ΔCDF) 3.48E-10 -9.67E-10 -9.74E-10 -8.46E-10 -8.38E-10 -8.44E-10 -8.47E-10 -8.48E-10
PLE NO NO NO NO NO NO NO NO
                 
Indicator value 7.80E-09 6.70E-09 8.30E-09 8.30E-09 8.70E-09 9.10E-09 8.80E-09 1.00E-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 0.000067 0.000067 0.000117 0.000133 0.000096 0.000091 0.000122 0.000118 0.000113 0.000111 0.000162 0.000143
Technical specification limit 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0
                         
Indicator value 0 0 0 0 0 0 0 0 0 0 0 0
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 0.000151 0.000198 0.000214 0.000137 0.000171 0.000174 0.000185 0.000240 0.000143 0.000131 0.000074 0.000113
Technical specification limit 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0
                         
Indicator value 0 0 0 0 0 0 0 0 0 0 0 0

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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 1.550 1.540 1.560 1.580 1.570 1.550 1.570 1.590 1.590 1.600 1.650 1.630
Technical specification limit 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0
                         
Indicator value 6.2 6.2 6.2 6.3 6.3 6.2 6.3 6.4 6.4 6.4 6.6 6.5
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 1.620 1.660 1.660 1.550 1.580 1.650 1.640 1.670 1.620 1.640 1.540 1.540
Technical specification limit 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0
                         
Indicator value 6.5 6.6 6.6 6.2 6.3 6.6 6.6 6.7 6.5 6.6 6.2 6.2

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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 122.0 35.0 22.0 40.0 46.0 38.0 21.0 20.0
Total opportunities 122.0 36.0 22.0 41.0 48.0 39.0 21.0 22.0
                 
Indicator value 98.5% 98.4% 98.5% 98.4% 98.4% 98.5% 98.4% 98.0%

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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 83.0 80.0 74.0 77.0 77.0 78.0 78.0 76.0
Total Key personnel 83.0 80.0 74.0 77.0 77.0 78.0 78.0 76.0
                 
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 335 449 336 336 337 452 337 338
Total sirens-tests 339 452 339 339 339 452 339 339
                 
Indicator value 98.9% 99.0% 99.0% 99.1% 99.3% 99.5% 99.5% 99.7%

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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