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| ==Subject:== | | ==Subject:== |
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| LaSalle County Station -Blowdown line failure -NPDES Permit No. IL0048151 | | LaSalle County Station -Blowdown line failure -NPDES Permit No. IL0048151 |
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| : 12. LaSalle County Station is submitting the attached notice concerning the failure of a water blowdown line. The line returns water from the LaSalle County Station cooling pond to the lllinois River. This notice is being sent to both above addresses on this date and will be included with the July 2012 Discharge Monitoring Report. If there are any questions, please contact Mr. Bill Buinickas of my staff at (815) 415-3235. | | : 12. LaSalle County Station is submitting the attached notice concerning the failure of a water blowdown line. The line returns water from the LaSalle County Station cooling pond to the lllinois River. This notice is being sent to both above addresses on this date and will be included with the July 2012 Discharge Monitoring Report. If there are any questions, please contact Mr. Bill Buinickas of my staff at (815) 415-3235. |
| Sincerely, Peter J. Karaba Plant Manager LaSalle County Station PJK/BB/dmd Enclosures cc: Ken Lyons -Chemistry Dept. Manager Kevin Hersey -Exelon Nuclear Corporate Environmental Regulatory Assurance | | Sincerely, Peter J. Karaba Plant Manager LaSalle County Station PJK/BB/dmd Enclosures cc: Ken Lyons -Chemistry Dept. Manager Kevin Hersey -Exelon Nuclear Corporate Environmental Regulatory Assurance |
| -Lasalle Central FiJe -2H103 K:\chdgrp\clerical\reports\NPDES\20120713 Blowdown Line Failure EXELON GENERATION | | -Lasalle Central FiJe -2H103 K:\chdgrp\clerical\reports\NPDES\20120713 Blowdown Line Failure EXELON GENERATION COMPANY, LLC LASALLE COUNTY ST A TION NPDES PERMIT NO. IL0048151 Outfall Name and Number Blowdown line failure. Parameter and Permit Limit Not Applicable Description, Date and Duration On July 13, 2012, at approximately 1510, LaSalle County station personnel identified the location of a blowdown line failure. The Cooling Pond Lake Blowdown system was isolated July 13, 2012 at 1555. The blowdown line failure is attributed to high pressure surges on the piping when the blowdown release valve was exercised earlier. The Cooling Pond Blowdown line was determined to have ruptured. |
| : COMPANY, LLC LASALLE COUNTY ST A TION NPDES PERMIT NO. IL0048151 Outfall Name and Number Blowdown line failure.
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| Parameter and Permit Limit Not Applicable Description, Date and Duration On July 13, 2012, at approximately 1510, LaSalle County station personnel identified the location of a blowdown line failure. | |
| The Cooling Pond Lake Blowdown system was isolated July 13, 2012 at 1555. The blowdown line failure is attributed to high pressure surges on the piping when the blowdown release valve was exercised earlier. | |
| The Cooling Pond Blowdown line was determined to have ruptured. | |
| This line is used for returning water from the station's Cooling Pond to the Illinois River. The line operates in conjunction with permitted NPDES Outfall 001, Cooling Pond Blowdown, to maintain the station Cooling Pond level. Review of the Operations log revealed that the blowdown release valve was cycled on July 11, 2012 at 1706. The line break occurred between this time and discovery of the line break on July 13, 2012 at 1510. An indeterminate amount of the cooling pond was discharged to the Illinois River. Corrective and Preventative Actions The Cooling Pond Make Up and Blowdown lines were isolated. | | This line is used for returning water from the station's Cooling Pond to the Illinois River. The line operates in conjunction with permitted NPDES Outfall 001, Cooling Pond Blowdown, to maintain the station Cooling Pond level. Review of the Operations log revealed that the blowdown release valve was cycled on July 11, 2012 at 1706. The line break occurred between this time and discovery of the line break on July 13, 2012 at 1510. An indeterminate amount of the cooling pond was discharged to the Illinois River. Corrective and Preventative Actions The Cooling Pond Make Up and Blowdown lines were isolated. |
| A sample of the discharged blowdown water was collected and analyzed for pH and Total Residual Chlorine (TRC). Results were determined to be 7.87 S.U. and 0.09 ppm respectively, which are within the acceptance levels of the NPDES permit limits for the Blowdown line outfall. | | A sample of the discharged blowdown water was collected and analyzed for pH and Total Residual Chlorine (TRC). Results were determined to be 7.87 S.U. and 0.09 ppm respectively, which are within the acceptance levels of the NPDES permit limits for the Blowdown line outfall. Based on this analysis, the failure had no significant effect on the environment. |
| Based on this analysis, the failure had no significant effect on the environment. | |
| Station Engineering and Maintenance inspected the ruptured line, and repairs were initiated. | | Station Engineering and Maintenance inspected the ruptured line, and repairs were initiated. |
| The failed line section has been replaced with a new section of pipe. The system was returned to service July 20, 2012. K:\chdgrp\clerical\reports\NPDES\20120713 Slowdown Line Failure Name and Number of Facility Contact William A. Buinickas Environmental Specialist Heather Meyer, Environmental Specialist K:\chdgrp\clerical\reports\N PDES\20120713 Blowdown Line Failure (815) 415-3235 (815) 415-3243 | | The failed line section has been replaced with a new section of pipe. The system was returned to service July 20, 2012. K:\chdgrp\clerical\reports\NPDES\20120713 Slowdown Line Failure Name and Number of Facility Contact William A. Buinickas Environmental Specialist Heather Meyer, Environmental Specialist K:\chdgrp\clerical\reports\N PDES\20120713 Blowdown Line Failure (815) 415-3235 (815) 415-3243 |
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| LaSalle County Station -Make-up line failure -NPDES Permit No. IL0048151 | | LaSalle County Station -Make-up line failure -NPDES Permit No. IL0048151 |
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| LaSalle County Generating Station 2601N.21st Road Marseilles. | | LaSalle County Generating Station 2601N.21st Road Marseilles. |
| IL 61341 www.exeloncorp.com In accordance with NPDES Permit Standard Condition 12, LaSalle County Station is submitting the attached notice concerning the failure of a water supply line. The water line provides up water from the Illinois River to the LaSalle County Station cooling pond. This notice is being sent to both above addresses on this date and will be included with the January 2014 Discharge Monitoring Report. If there are any questions, please contact Mr. Bill Buinickas at (815) 415-3235. | | IL 61341 www.exeloncorp.com In accordance with NPDES Permit Standard Condition 12, LaSalle County Station is submitting the attached notice concerning the failure of a water supply line. The water line provides up water from the Illinois River to the LaSalle County Station cooling pond. This notice is being sent to both above addresses on this date and will be included with the January 2014 Discharge Monitoring Report. If there are any questions, please contact Mr. Bill Buinickas at (815) 415-3235. |
| Harold T. Vinyard Plant Manager Exelon Generation | | Harold T. Vinyard Plant Manager Exelon Generation Company, LLC HTV/WAB/dk Enclosures cc: Michael Martin -LaSalle Chemistry Manager Kevin Hersey -Exelon Nuclear Corporate Environmental Regulatory Assurance |
| : Company, LLC HTV/WAB/dk Enclosures cc: Michael Martin -LaSalle Chemistry Manager Kevin Hersey -Exelon Nuclear Corporate Environmental Regulatory Assurance
| | -Lasalle Central File K:\chdgrp\clerical\reports\NPDES\20140123 Makeup Line Failure EXELON GENERATION COMPANY, LLC LASALLE COUNTY STATION NPDES PERMIT NO. IL004815 I Outfall Name and Number River Lift Station -Line failure on discharge from the river lift pumps. Parameter and Permit Limit Not applicable. |
| -Lasalle Central File K:\chdgrp\clerical\reports\NPDES\20140123 Makeup Line Failure EXELON GENERATION | | Description, Date and Duration On January 23, 2014, at approximately 1246, LaSalle County station personnel identified the location of a make-up line failure. The Cooling Pond Make Up line was determined to have ruptured. |
| : COMPANY, LLC LASALLE COUNTY STATION NPDES PERMIT NO. IL004815 I Outfall Name and Number River Lift Station -Line failure on discharge from the river lift pumps. Parameter and Permit Limit Not applicable.
| |
| Description, Date and Duration On January 23, 2014, at approximately 1246, LaSalle County station personnel identified the location of a make-up line failure. | |
| The Cooling Pond Make Up line was determined to have ruptured. | |
| This line is used for pumping make up water from the Illinois River to the station's Cooling Pond. The pre-stressed concrete cylindrical pipe (PCCP) line failed. A sample of the discharged make up water was collected. | | This line is used for pumping make up water from the Illinois River to the station's Cooling Pond. The pre-stressed concrete cylindrical pipe (PCCP) line failed. A sample of the discharged make up water was collected. |
| Analysis determined it had a pH of 8.76 Standard Units, and a Total Residual Chlorine of 0.04 ppm which is consistent with the Illinois River. Based on this analysis, the line failure had no significant effect on the environment. | | Analysis determined it had a pH of 8.76 Standard Units, and a Total Residual Chlorine of 0.04 ppm which is consistent with the Illinois River. Based on this analysis, the line failure had no significant effect on the environment. |
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Category:Response to Request for Additional Information (RAI)
MONTHYEARRS-24-093, Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-10-10010 October 2024 Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests RS-24-090, Response to Request for Additional Information - Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds2024-09-12012 September 2024 Response to Request for Additional Information - Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds ML24222A6772024-08-0909 August 2024 Response to Request for Additional Information for Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition RS-23-120, Supplemental Information Letter for Part 73 Exemption Request - 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Response to Request for Additional Information - Proposed Relief Request Associated with Reactor Pressure Vessel Water Level Instrumentation Partial Penetration Nozzle Repairs2022-02-0202 February 2022 Constellation Energy Generation, LLC - Response to Request for Additional Information - Proposed Relief Request Associated with Reactor Pressure Vessel Water Level Instrumentation Partial Penetration Nozzle Repairs JAFP-21-0087, Response to Request for Additional Information Regarding Request for Approval of Transfer of Licenses and Conforming Amendments2021-09-16016 September 2021 Response to Request for Additional Information Regarding Request for Approval of Transfer of Licenses and Conforming Amendments RS-21-078, Response to Request for Additional Information for Application to Revise Technical Specification to Adopt TSTF-582, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements, and TSTF-583-T, TSTF-582 Diesel2021-08-19019 August 2021 Response to Request for Additional Information for Application to Revise Technical Specification to Adopt TSTF-582, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements, and TSTF-583-T, TSTF-582 Diesel RS-21-085, Response to Request for Additional Information Regarding License Amendment Request to Incorporate Licensing Topical Report NEDE-33885PA, Revision 1, GNF CRDA Application Methodology (EPID-L-2021-LLA-0016)2021-08-17017 August 2021 Response to Request for Additional Information Regarding License Amendment Request to Incorporate Licensing Topical Report NEDE-33885PA, Revision 1, GNF CRDA Application Methodology (EPID-L-2021-LLA-0016) NMP2L2773, Company - 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JAFP-21-0032, Response to Request for Additional Information - Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting2021-04-20020 April 2021 Response to Request for Additional Information - Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting RS-21-050, Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165)2021-04-16016 April 2021 Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165) RS-21-045, Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165)2021-04-0707 April 2021 Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165) RS-21-040, Response to Second Round Request for Additional Information (Rais) for License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2021-03-31031 March 2021 Response to Second Round Request for Additional Information (Rais) for License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b RS-21-027, Response to Request for Additional Information Regarding Request for Exemption from Pre-Access Drug and Alcohol Testing Requirements in 10 CFR 26.652021-02-21021 February 2021 Response to Request for Additional Information Regarding Request for Exemption from Pre-Access Drug and Alcohol Testing Requirements in 10 CFR 26.65 RS-21-009, Response to Request for Additional Information Regarding the License Amendment Request to Adopt 10 CFR 50.692021-01-22022 January 2021 Response to Request for Additional Information Regarding the License Amendment Request to Adopt 10 CFR 50.69 RS-20-136, Response to Request for Additional Information Re License Amendment Requests for Amendments to Renewed Facility OL to Adopt 10CFR50.69 & to Adopt TSTF-505, Rev. 2 (EPID L-2020-LLA-0017 and EPID-L-2020-LLA-0018)2020-10-29029 October 2020 Response to Request for Additional Information Re License Amendment Requests for Amendments to Renewed Facility OL to Adopt 10CFR50.69 & to Adopt TSTF-505, Rev. 2 (EPID L-2020-LLA-0017 and EPID-L-2020-LLA-0018) RS-20-133, Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.692020-10-16016 October 2020 Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.69 RS-20-104, Supplement to the Request for a License Amendment Technical Specification 3.7.3, Ultimate Heat Sink2020-09-11011 September 2020 Supplement to the Request for a License Amendment Technical Specification 3.7.3, Ultimate Heat Sink RS-20-112, Response to Request for Additional Information Related to License Amendment Request to Adopt TSTF-5682020-09-0303 September 2020 Response to Request for Additional Information Related to License Amendment Request to Adopt TSTF-568 NMP2L2711, Byron Station; Calvert Cliffs; Clinton Power Station; LaSalle County Station; Limerick Generating Station; and Nine Mile Point Nuclear Station - Proposed Alternative to Utilize Code Case N-8792019-10-16016 October 2019 Byron Station; Calvert Cliffs; Clinton Power Station; LaSalle County Station; Limerick Generating Station; and Nine Mile Point Nuclear Station - Proposed Alternative to Utilize Code Case N-879 JAFP-19-0057, Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-8802019-06-0404 June 2019 Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-880 NMP1L3279, Response to Request for Additional Information - Proposed Alternatives to Utilize Code Cases N-878 and N-880 for Plants2019-05-0101 May 2019 Response to Request for Additional Information - Proposed Alternatives to Utilize Code Cases N-878 and N-880 for Plants RS-19-052, Supplement to the Response to Request for Additional Information Regarding License Amendment Request to Remove Operating Mode Restrictions for Performing Surveillance Testing of the Division 3 Battery and High ..2019-04-24024 April 2019 Supplement to the Response to Request for Additional Information Regarding License Amendment Request to Remove Operating Mode Restrictions for Performing Surveillance Testing of the Division 3 Battery and High .. RS-19-019, Response to Request for Additional Information Regarding Relief Request 13R-152019-04-0202 April 2019 Response to Request for Additional Information Regarding Relief Request 13R-15 JAFP-19-0006, Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-8802019-01-0808 January 2019 Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-880 RS-18-143, Supplemental Information Supporting License Amendment Requests for Approval of Changes to Emergency Plan Staffing Requirements2018-11-29029 November 2018 Supplemental Information Supporting License Amendment Requests for Approval of Changes to Emergency Plan Staffing Requirements RS-18-097, Response to Request for Additional Information and Supplemental Information-License Amendment.2018-07-27027 July 2018 Response to Request for Additional Information and Supplemental Information-License Amendment. RS-18-086, Response to Request for Additional Information Regarding License Amendment Request for Temporary Extensions to Technical Specifications Supporting Maintenance on Portions of the Core Standby Cooling System2018-07-16016 July 2018 Response to Request for Additional Information Regarding License Amendment Request for Temporary Extensions to Technical Specifications Supporting Maintenance on Portions of the Core Standby Cooling System RS-18-078, Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control2018-06-18018 June 2018 Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control RS-18-061, Response to Request for Additional Information Regarding Decommissioning Funding Plans for Independent Spent Fuel Storage Installations (Isfsis)2018-05-0202 May 2018 Response to Request for Additional Information Regarding Decommissioning Funding Plans for Independent Spent Fuel Storage Installations (Isfsis) RS-18-014, Supplement to Request to Revise Technical Specifications 2.1.1 for Minimum Critical Power Ratio Safety Limits2018-01-25025 January 2018 Supplement to Request to Revise Technical Specifications 2.1.1 for Minimum Critical Power Ratio Safety Limits RS-17-147, Response to Request for Additional Information Regarding LaSalle County Station Fourth Inservice Inspection Interval Relief Request 14R-012017-11-10010 November 2017 Response to Request for Additional Information Regarding LaSalle County Station Fourth Inservice Inspection Interval Relief Request 14R-01 RS-17-146, Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis2017-10-19019 October 2017 Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis RS-17-099, Response to Request for Additional Information Regarding LaSalle County Station License Amendment Request for Extension of Type a and Type C Containment Leak Rate Test Intervals (PRA Branch)2017-08-0808 August 2017 Response to Request for Additional Information Regarding LaSalle County Station License Amendment Request for Extension of Type a and Type C Containment Leak Rate Test Intervals (PRA Branch) RS-17-101, Response to Request for Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis2017-07-28028 July 2017 Response to Request for Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis RS-17-102, Response to Request for Supplemental Information Regarding Fourth Inservice Inspection Interval Relief Request 14R-012017-07-20020 July 2017 Response to Request for Supplemental Information Regarding Fourth Inservice Inspection Interval Relief Request 14R-01 RS-17-098, Response to Request for Additional Information Regarding 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Lnservice Testing Program Fourth 10-Year Interval RS-16-244, Additional Information Regarding Request for License Amendment to Address Secondary Containment Access Openings2016-12-12012 December 2016 Additional Information Regarding Request for License Amendment to Address Secondary Containment Access Openings RS-16-176, County, High Frequency Supplement to Seismic Hazard Screening Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ic2016-12-0101 December 2016 County, High Frequency Supplement to Seismic Hazard Screening Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ich RS-16-125, Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the 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- 2,elon Generation August 6, 2012 Illinois Environmental Protection Agency Division of Water Pollution Control 1021 North Grand Avenue East Springfield, IL 62794-9276
Subject:
LaSalle County Station -Blowdown line failure -NPDES Permit No. IL0048151
Dear Sir:
. .:.:lie .i1a11011 In accordance with NPDES Permit Standard Condition
- 12. LaSalle County Station is submitting the attached notice concerning the failure of a water blowdown line. The line returns water from the LaSalle County Station cooling pond to the lllinois River. This notice is being sent to both above addresses on this date and will be included with the July 2012 Discharge Monitoring Report. If there are any questions, please contact Mr. Bill Buinickas of my staff at (815) 415-3235.
Sincerely, Peter J. Karaba Plant Manager LaSalle County Station PJK/BB/dmd Enclosures cc: Ken Lyons -Chemistry Dept. Manager Kevin Hersey -Exelon Nuclear Corporate Environmental Regulatory Assurance
-Lasalle Central FiJe -2H103 K:\chdgrp\clerical\reports\NPDES\20120713 Blowdown Line Failure EXELON GENERATION COMPANY, LLC LASALLE COUNTY ST A TION NPDES PERMIT NO. IL0048151 Outfall Name and Number Blowdown line failure. Parameter and Permit Limit Not Applicable Description, Date and Duration On July 13, 2012, at approximately 1510, LaSalle County station personnel identified the location of a blowdown line failure. The Cooling Pond Lake Blowdown system was isolated July 13, 2012 at 1555. The blowdown line failure is attributed to high pressure surges on the piping when the blowdown release valve was exercised earlier. The Cooling Pond Blowdown line was determined to have ruptured.
This line is used for returning water from the station's Cooling Pond to the Illinois River. The line operates in conjunction with permitted NPDES Outfall 001, Cooling Pond Blowdown, to maintain the station Cooling Pond level. Review of the Operations log revealed that the blowdown release valve was cycled on July 11, 2012 at 1706. The line break occurred between this time and discovery of the line break on July 13, 2012 at 1510. An indeterminate amount of the cooling pond was discharged to the Illinois River. Corrective and Preventative Actions The Cooling Pond Make Up and Blowdown lines were isolated.
A sample of the discharged blowdown water was collected and analyzed for pH and Total Residual Chlorine (TRC). Results were determined to be 7.87 S.U. and 0.09 ppm respectively, which are within the acceptance levels of the NPDES permit limits for the Blowdown line outfall. Based on this analysis, the failure had no significant effect on the environment.
Station Engineering and Maintenance inspected the ruptured line, and repairs were initiated.
The failed line section has been replaced with a new section of pipe. The system was returned to service July 20, 2012. K:\chdgrp\clerical\reports\NPDES\20120713 Slowdown Line Failure Name and Number of Facility Contact William A. Buinickas Environmental Specialist Heather Meyer, Environmental Specialist K:\chdgrp\clerical\reports\N PDES\20120713 Blowdown Line Failure (815) 415-3235 (815) 415-3243
February 21, 2014 US Environmental Protection Agency Region V, Enforcement Division ATTN: Chief, Compliance Unit 77 West Jackson Street Chicago, IL 60604 Illinois Environmental Protection Agency Division of Water Pollution Control 1021 North Grand A venue East Springfield, IL 62794-9276
Subject:
LaSalle County Station -Make-up line failure -NPDES Permit No. IL0048151
Dear Sir:
LaSalle County Generating Station 2601N.21st Road Marseilles.
IL 61341 www.exeloncorp.com In accordance with NPDES Permit Standard Condition 12, LaSalle County Station is submitting the attached notice concerning the failure of a water supply line. The water line provides up water from the Illinois River to the LaSalle County Station cooling pond. This notice is being sent to both above addresses on this date and will be included with the January 2014 Discharge Monitoring Report. If there are any questions, please contact Mr. Bill Buinickas at (815) 415-3235.
Harold T. Vinyard Plant Manager Exelon Generation Company, LLC HTV/WAB/dk Enclosures cc: Michael Martin -LaSalle Chemistry Manager Kevin Hersey -Exelon Nuclear Corporate Environmental Regulatory Assurance
-Lasalle Central File K:\chdgrp\clerical\reports\NPDES\20140123 Makeup Line Failure EXELON GENERATION COMPANY, LLC LASALLE COUNTY STATION NPDES PERMIT NO. IL004815 I Outfall Name and Number River Lift Station -Line failure on discharge from the river lift pumps. Parameter and Permit Limit Not applicable.
Description, Date and Duration On January 23, 2014, at approximately 1246, LaSalle County station personnel identified the location of a make-up line failure. The Cooling Pond Make Up line was determined to have ruptured.
This line is used for pumping make up water from the Illinois River to the station's Cooling Pond. The pre-stressed concrete cylindrical pipe (PCCP) line failed. A sample of the discharged make up water was collected.
Analysis determined it had a pH of 8.76 Standard Units, and a Total Residual Chlorine of 0.04 ppm which is consistent with the Illinois River. Based on this analysis, the line failure had no significant effect on the environment.
Corrective and Preventative Actions The Cooling Pond Make Up and Blowdown lines were isolated.
Repairs to the broken line were promptly initiated and the line is currently being repaired.
Name and Number of Facility Contact William A. Buinickas Environmental Specialist (815) 415-3235 K:\chdgrp\clerical\reports\NPDES\20140123 Makeup Line Failure