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 Issue dateTitleTopic
ML20206C98727 April 1999NPDES Noncompliance Notification:On 990319,station Personnel Observed Foam Emanating from Manhole Vent Associated with Outfall 001,no Foam Was Observed on Any Waterway.Caused by Inappropriate Addition of Betz 3625 to Spray Pond
ML20207D61726 February 1999NPDES Noncompliance Notification:On 990111,discovered That Weelkly Analysis for non-oxidizing Biocide Betz 3625 Was Not Performed.Caused by Sample Being Inappropriately Delayed for Future Chemical Addition.Counseled Individuals Involved
ML20202F05919 January 1999NPDES Noncompliance Notification:On 990112,Auxiliary Boiler Source Number OAS502 Found to Have Malfunctioning Opacity Monitor.Caused by Stepdown Transformer within Power Supply. Power Supply Replaced
ML20206E21631 December 19981998 Annual Environ Operating Rept (Non-Radiological) for Limerick Generating Station,Units 1 & 2
ML20205T05831 December 1998Annual Radiological Environ Operating Rept 15 for 1998Offsite Dose Calculation Manual
Annual Radiological Environmental Operating Report
ML20206R34921 December 1998NPDES Noncompliance Notification:On 981102,500 Gallons of 12% Sodium Hypochlorite Released to Environ.Caused by Failure of Tank Discharge Fittings & Subsequent Leaks from Secondary Containment.Culvert Was Flushed Repeatedly
ML20198J28121 December 1998NPDES Noncompliance Notification:On 981102,release of 500 Gallons of 12% Sodium Hypochlorite to Environment Occurred. Caused by Failure of Tank Discharge Fittings.Integrity Testing Will Be Performed on All New Tanks.With
ML20236V20027 July 1998NPDES Noncompliance Notification:On 980619,geometric Mean Coliform Concentration Calculated to Be 223 Colonies Per 100 Ml.Sample Procedure Enhanced to Ensure Normal Operating ConditionsGrab sample
ML20248C94627 May 1998NPDES Noncompliance Notification:On 980414,total Iron Discharge Through Outfall 001 Exceeded Limits Set in Ltr Dtd 960508.Total Iron Discharge Limit Exceeded During Cleaning Evolution.Limit Revised
ML20217N69227 February 1998NPDES Noncompliance Notification:On 980107 Net Total Suspended Solids (TSS) for Units 1 & 2 Cooling Towers at Outfall 001 Exceeded NPDES Permit Daily Limit of 60 Ppm. Caused by Contaminated Sample Lines.Replaced Tygon Tubing
ML20203H19131 December 1997Annual Effluent Release Rept 23 for Jan-Dec 1997Grab sample
Offsite Dose Calculation Manual
Process Control Program
ML20216F33731 December 1997Annual Environmental Operating Rept (Non-Radiological) for 970101-1231Zebra Mussel
ML20203L56931 December 1997Occupational Exposure Tabulation Rept for LGS Units 1 & 2 for 1997
ML20203H22031 December 1997Tower 1 Joint Frequency Distributions of Wind Speed & Direction by Atmospheric Stability Class Rept 13 for 1997
ML20217P19431 December 1997Annual Environ Operating Rept (Non-Radiological) for Jan-Dec 1997, for LGS Units 1 & 2Zebra Mussel
ML20217M64731 December 1997Annual Radiological Environ Operating Rept 14,Jan-Dec 1997 for Limerick Generating Station,Units 1 & 2Offsite Dose Calculation Manual
Annual Radiological Environmental Operating Report
ML20141G02727 June 1997NPDES Noncompliance Notification:On 970512,sample for Kjeldahl Omitted Due to Personnel Error.Counseled Individual Responsible.On 970521,Net TSS Exceeded NPDES Daily Limit Due to Fouled Sample Tubing.Replaced Sample Tubing
ML20137M55127 March 1997NPDES Noncompliance Notification:On 970228,flow Integrator Used to Measure Spray Pond Effluent Flow Was Identified to Be Malfunctioning & Declared Inoperable Due to Lodged Debris.Revised Procedure for Spray Pond Effluent Flow
ML20134G32431 January 1997NPDES Noncompliance Notification:On 970108,util Informed NRC That PA Dept of Environ Protection Granted Approval for Temporary Discharge at Lgs,Per 961219
ML20135D01631 December 1996Occupational Exposure Tabulation Rept for LGS Units 1 & 2 for 1996
ML20148B66731 December 1996LGS Units 1 & 2 Annual Radiological Environ Operating Rept 13 for 960101-1231Grab sample
Offsite Dose Calculation Manual
Met Tower
Annual Radiological Environmental Operating Report
Stolen
ML20135C76931 December 19961996 Annual Effluent Release Rept No 22Offsite Dose Calculation Manual
Process Control Program
ML20138J52931 December 1996Annual Environ Operating Rept (Non-Radiological) for Jan- Dec 1996Zebra Mussel
ML20135C77331 December 19961996 Annual Tower No 1 Joint Frequency Distribution of Wind Speed & Direction by Atmospheric Stability Class Rept No 12
ML20138G96524 December 1996NPDES Noncompliance Notification:On 960428,calibration of Flowmeter Used to Measure Spray Pond Flow Was Not Checked on Routine Basis Because Person Required to Develop Maint Was Unaware of Requirements.Installed New Meter
ML20135A58527 November 1996NPDES Noncompliance Notification:On July-Sept 1996 Re NPDES Limit for Fecal Coloform Concentration Not Met.Caused by Inadequate Gasket Installation.Ozonators Overhauled to Ensure Peak PerformanceGrab sample
ML20134E06428 October 1996NPDES Noncompliance Notification:During Month of Sept 1996, NPDES Limit for Fecal Coliform Concentration at Discharge of Bradshaw Reservoir Pumps Was Not Met.Caused by Leaking Gaskets on Ozone Gas Diffusers.New Gaskets,InstalledGrab sample
ML20129E56827 September 1996NPDES Noncompliance Notification:On 960805,geometric Mean of Fecal Coliform Concentration Calculated to Be 641 Colonies Per 100 Ml.Cause Suspected to Be Due to Malfunctioning Ozone Disinfection Sys.Adjustments to Sys Have Been MadeGrab sample
ML20129E54126 September 1996NPDES Noncompliance Notification:On 960812,discharge Observed from Unit 2 Cooling Tower Overflow to Outfall 021. Caused by Personnel Error in Performing Required Analysis of Cooling Tower Overflow Sample.Individual Counseled
ML20117G70723 August 1996NPDES Noncompliance Notification:On 960715,geometric Mean of Fecal Coliform Concentration Exceeded NPDES Permit Limit. Caused by Leaking Seals on Ozone Diffusers.Temporary Adjustments Made to Ozone Gas Flow BalanceGrab sample
ML20116B38524 July 1996NPDES Noncompliance Notification:On 960602 Identified Ph Levels Exceeded NPDES Permit Limitations.Caused by Natural Biological activity.CO2 Injection Established,Maintained & Monitored Until 960612
ML20115G11512 July 1996NPDES Noncompliance Notification:On 960619,resulting Net TSS Value 82.8 mg/1,exceeded Max Daily Limit of 60 Mg/L.Caused by Excessive Storm Water Runoff.Net TSS RevisedGrab sample
ML20113C44524 June 1996NPDES Noncompliance Notification:On 960318,flow Integrator Used to Measure Spray Pond Effluent Flow Declared Inoperable.Caused by Faulty Flow Integrator.Frequency of Use of Instrument Changed to Daily as Stated in Issue Number
ML20108A38028 April 1996NPDES Noncompliance Notification:On 960223,identified Seven Issues of Administrative non-compliance/ambiguity W/Permits. Caused by Inadequate Administration.Individuals Gained Better Understanding W/Guidance
ML20108A36728 April 1996NPDES Noncompliance Notification:On 960314,personnel Observed Sewage Overflowing from MH-07 & Into Storm Drain W-4.Caused by Blockage of Pipe Section Between MH-07 & MH-08.Sewer Contract Svc Pressure Cleaned
ML20101K46628 March 1996NPDES Noncompliance Notification:On 960218,discovered That No Records Existed for Bradshae Reservoir Discharge Water Temp for Listed Time Periods.Caused by Temporary Reassigment of Personnel.Review of Staffing in Progress
ML20100P63128 February 1996NPDES Noncompliance Notification:On 951108,discharge 001 Net TSS in Excess of Maximum Daily Limit.Caused by Flaw in Methodology to Calculate Net TSS concentration.Follow-up Composite Samples TakenGrab sample
ML20108C92831 December 1995LGS Units 1 & 2 1995 Annual Environ Operating Rept (Non- Radiological) Jan-Dec 1995
ML20100L88631 December 1995Annual Effluent Release Rept 21,Jan-Dec 1995Offsite Dose Calculation Manual
Process Control Program
ML20108B73931 December 1995Annual Radiological Environ Operating Rept 12 Jan-Dec 1995Grab sample
Offsite Dose Calculation Manual
Annual Radiological Environmental Operating Report
Chernobyl
ML20100L89631 December 1995Tower 1 Joint Frequency Distributions of Wind Speed & Direction by Atmospheric Stability Class 1995 Rept 11
ML20080N10631 December 1994Annual Effluent Release Rept 20 Jan-Dec 1994 PECO Energy LGS Units 1 & 2Grab sample
Offsite Dose Calculation Manual
ML20082N50631 December 1994Annual Environ Operating ReptZebra Mussel
ML20087H72331 December 1994Annual Radiological Environ Operating Rept 11 for Jan-Dec 1994Grab sample
Offsite Dose Calculation Manual
Annual Radiological Environmental Operating Report
Chernobyl
ML20080N11231 December 1994Tower 1 Joint Frequency Distributions of Wind Speed & Direction by Atmospheric Stability Class 1994 Rept 10
ML20072R46031 August 1994NPDES Noncompliance Notification:On 940708 & 0815,Discharge 001 Total Zinc Concentrations Exceeded Max Daily Limitations.Daily Zinc Trending Analysis Will Be Upgraded & Chemistry Technician Involved in 940815 Event CounselledGrab sample
ML20071L17627 July 1994NPDES Noncompliance Notification:On 940609,zinc Analyses Indicated That Discharge 001 Total Zinc Levels in Excess of Max Daily Limitations in Both Cooling Towers.Daily Zinc Control Limits Will Be Administratively Maintained Lower
ML20149E72926 July 1994NPDES Discharge Monitoring Rept:On 940713,approx 18 Gallons of Betz Clamtrol CT-1 Inadvertently Released from Injection Sys Located South of LGS Spraypond Pumphouse.Caused by Break in Pump Discharge Line.Polyethylene Piping Replaced
ML20065B92225 March 1994NPDES Noncompliances Notification:On 940204,discharge 001 Maximum Daily Limit of 1.0 mg/1 Total Zinc Was Exceeded. Caused by Low Ph Transient in Unit 2 Cooling Tower Water Sys.Isolated Acid Injection Sys
ML20064C77025 February 1994NPDES Noncompliance Notification:On 940116 & 17 Manual Reactor Scram Occurred.Caused by Failure to Adequately Throttle Cooling Tower Bypass Valves.Procedure Revised
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