ML20069H697
| ML20069H697 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 03/31/1983 |
| From: | Elashry M TENNESSEE VALLEY AUTHORITY |
| To: | Marlar J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| TN0026450, TN26450, NUDOCS 8304060326 | |
| Download: ML20069H697 (2) | |
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3d TENNESSEE VALLEY AUTuomT v Kf40XVILLE. TENNES$EC 37902 TVA Mailroom MAR 311983 Mr. John Marlar, Chief Facilities Performance Branch Water Management Division U.S. Environmental Protection Agency Region IV 345 Courtland Street, NE.
Atlanta, Georgia 30365
Dear Mr. Marlar:
NOTIFICATION OF NONCOMPLIANCE WITH EFFLUENT LIMITATIONS - NPDES PERMIT NO. TN0026450 - SEQUOYAH NUCLEAR PLANT i
Description of the discharge--Discharge No. 007 - Yard drainage pcnd effluent. Grab samples collected at noon and 1:30 p.m. on March 14 had pH values of 9.31 and 9.33 standard units (s.u.), respectively, exceeding the maximum permit limitation of 9.0 s.u.
Cause and period of the noncompliance--Plant employees were performing maintenance work on a 4400-gallon capacity sodium hydroxide tank within the temporary makeup water treatment plant when a valve was accidentally damaged. Approximately 1200 gallons of sodium hydroxide was released to a containment sump. An estimated 10 gallons reached a floor drain 1.eading to the yard drainage system. The material apparently passed through the yard pond as a slug. A sample collected at noon on March 13 had a pH value of 8.2 s.u., and a sample collected at 9:40 p.m. on March 14 had a pH value of 8.64 s.u.
Therefore, the period of noncompliance was less than 34 hours3.935185e-4 days <br />0.00944 hours <br />5.621693e-5 weeks <br />1.2937e-5 months <br />.
Steps taken to reduce, eliminate, and prevent recurrence of the noncomplying I
ifischarge--The sodium hydroxide contained within the building sump was pumped into plastic drums for reuse.
Because of the accidental nature of the incident leading to the noncompliance, no action is recommended at this time.
However, plant personnel performing maintenance work will be instructed to exercise caution when working around chemical storage facilities.
Sincerely, Original Signed B9l M. T. El Ashry Mohamed T. El-Ashry, Ph.D.
Director of Environmental Quality cc:
See page 2 8304060326 830331 DR ADOCK 05000 1903 - 1 VA SOrH AN NIVERS ARY d
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,, Mr. John Marlar MAR 31 1993 cc: ~Mr. Harold R. Denton, Director 0ffice'~of Nuclear ~ R66ctor RegliThtTon-U.S. fluclear Regulatory Conmission 7920 florfolk Avenue Washington, D.C.
20555 Mr. Jack R. McCormick, Basin Manager Chattanooga Basin Office Division of Water Quality Cc..ol 2501 Milne Street Chattanooga, Tennessee 37406 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II 101 Marietta Street Atlanta, Georgia 30303 Tennessee Department of Public Health Division of Water Quality Control TERRA Building 150 flinth Avenue, North Nashville, Tennessee 37203
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