ML093380819
| ML093380819 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 12/02/2009 |
| From: | Cleary T Tennessee Valley Authority |
| To: | Barton B Office of Nuclear Reactor Regulation, State of TN, Dept of Environment & Conservation, Div of Water Pollution Control |
| References | |
| TN0026450 | |
| Download: ML093380819 (3) | |
Text
Tennessee Valley Authority Post Office Box 2000 Soddy Daisy, Tennessee 37384-2000 Timothy P. Cleary Site Vice President Sequoyah Nuclear Plant December 2, 2009 Ms. B. Paulette Barton State of Tennessee Department of Environment and Conservation Division of Water Pollution Control Enforcement & Compliance Section 6 th Floor, L&C Annex 401 Church Street Nashville, Tennessee 37243-1534 Ms. Barton:
2009 DISCHARGE MONITORING REPORT - QUALITY ASSURANCE (DMR-QA) STUDY 29 CORRECTIVE ACTIONS REPORTS Please find enclosed the corrective action reports for the 2009 DMR-QA Study 29 Laboratory Performance Evaluation obtained by TVA Sequoyah Nuclear Plant (SQN) and supporting laboratories as required by NPDES Permit TN0026450. Investigations concluded that both "Not Acceptable" results were isolated incidents due to the lack of obvious causes of failure. Remedial samples have also been reanalyzed and were found to be "Acceptable." If you have any questions or need additional information, please contact Ann Hurt at (423) 843-6714 or Stephanie Howard at (423) 843-6700 of Sequoyah's Environmental staff.
Sincerely, Timothy.Cleary Site Vice President Sequoyah Nuclear Plant Enclosure cc (Enclosure)
Mr. Ray Terhune U.S. Nuclear Regulatory Commission US EPA Region IV ATTN: Document Control Desk SESD/MTSB/QAS Washington, D.C. 20555 980 College Station Road Athens, Georgia 30605-2720 Chattanooga Environmental Assistance Center Division of Water Pollution Control State Office Building, Suite 550 540 McCallie Avenue Chattanooga, Tennessee 37402-2013 zrb~S) printed on recycled paper
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S.C I - E N C-E S 12065 Lebanon Road Mt. Juliet, TN 37122 615-758-5858 1-800-767-5859 Fax: 615-758-5859 www. envsci. com October 2, 2009 To: All DMR-QA 29 Participants Re: ESC Non-Filterable Residue (TSS) Failure ESC has performed a quality review on the DMR-QA 29 PT sample (analyzed in the WP-174 study) concerning Non-Filterable Residue (Total Suspended Solids). We were unable to determine an obvious cause of failure. ESC has since analyzed another PT for TSS with acceptable preliminary results. We believe this to be an isolated incident and have evaluated all QC criteria concerning this matter. The laboratory has performed all appropriate corrective actions and made changes where necessary.
Analyte Study Date Reported Assigned Acceptance Methods Evaluation Analyte__
Study__Date Value (mg/L)
Value (mg/L)
Limits (mg/L)
Methods Evaluation Non-Filterable WP-175 336 307 21.7-367 EPA 160.2 Acceptable Residue Sep 2009 SM 2540D (TSS)
If you have any questions or need additional information, please contact me.
Sincerely, Dixie L. -Marlin QC Manager
December 3, 2009 SEQUOYAH NUCLEAR PLANT DMR-QA 29 TOTAL RESIDUAL CHLORINE "NOT ACCEPTABLE" RESULTS The Sequoyah Nuclear Plant (SQN) Chemistry QA/QC program owner has performed an investigation into the DMR-QA 29 sample concerning Total Residual Chlorine (TRC). SQN was unable to determine an obvious cause of the "not acceptable" results. SQN has since analyzed another sample for TRC with acceptable results. SQN believes this to be an isolated incident and has evaluated all QA/QC criteria concerning this matter. SQN has performed all appropriate corrective actions regarding this "not acceptable" result.
Parameter Reported Certified Acceptance Methods Evaluation Value Value Limits (mg/L)
(mg/L)
(mg/L)
Total Residual 1.14 1.21 1.06-1.36 SM4500CI G Acceptable Chlorine (TRC)
Sincerely, Diedre Nida SQN Chemistry Operations Manager