ML20148G306
| ML20148G306 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/09/1997 |
| From: | Scace S NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO. |
| To: | Grier J CONNECTICUT, STATE OF |
| References | |
| SES-97-GN-080, SES-97-GN-80, NUDOCS 9706050277 | |
| Download: ML20148G306 (2) | |
Text
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(203) 665-5000 May 9,1997 SES-97 GN-080 i
i DJ1114 Mr James Grier l
Supervising Sanitary Engineer Water Management Bureau Department of Environmental Protection 79 Elm Street Hartford, CT 06106-5127
Dear Mr. Grier:
i Reference 1 Letter D10959 from S. E. Scace to ). Grier dated April 9,1997 Reference 2 Letter D10751 from S. E. Scace to J. Grier dated February 11,1997 i
i Millstone Station Notification of Dischaigns Millstone Unit 3 Northeast Nuclear Energy Company (NNECO) has previously discussed with you protocols fo the processing of certain wastewater containing trace amounts of hydrazine until no hydrazine above i
detection limits is observed (References 1 & 2). Following-up on our prior oral notifications, NNECO hereby submits the following written notification of discharges occurring between April 12,1997 7,1997. These discharges were discussed with you by phone on April,14,1997, April 18,1997, A 1997 and May 7,1997,
- 1. Hydratie Removal Prior to Discharae via DSN 001C-2 On the dates listed below, trace amounts of hydrazine were detected in wastewaters in the High Le Waste Drains Tanks (HLWDT) associated with DSN 001C-2. Consistent with the m similar wastewater has been previously handled (Reference 1), the wastewaters in the HLWDT were
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processed through the demineraliers and filters associated with DSN 001C-2 prior to discharge from i
Waste Test Tanks. 'Ibese wastewateis met all permit limits for DSN 001C-2. Further, no hydrazine detectable limits (<5 ppb) using spectrophotometry was found. The initial concentrations detected, and volumes discharged are provided below.
Initial Cn=ntratim (nob)
Date Discharned Volume Discharned (gallons) 48 April 12,1997 48 18,900 April 12,1997 32 18,480 April 18,1997 18,240 75 April 25,1997 18,900 31 April 25,1997
- 83 19,110 April 27,1997 16,800 51 May 7,1997 18,690 9706050277 970509 PDR ADOCK 05000423-S PDR
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- 2. Hvdr=vina Ramaval Prior to Discharae via DSN 001C-3 l
4 On April 26,1997, wastewater containing trace amounts of hydrazine was detected in the B Low Level I
Waste Drains Tank (LLWDT) associated with DSN 001C-3. Consistent with the manne wastewater has been previously handled (Reference 2) the wastewater in the LLWDT was processed through a fiher and domineralizer to remove hydrazine to below detectable levels based on spectrophotometry (<5 ppb). ' Ibis wastewater met all limits associated wi:h DSN 001C-3. He initial hydrazine concentration ded date and volumes discharged are provided below:
i Initial Concentration (oobi Date Diidsiged Volume Discharmed(gallons) 138 April 26,1997 2920 Should you have any questions, please call Mr. Paul Jacobson, Environmental Services - Nuclear at (8 447-1791 Ext. 2335.
i Very truly yours, NORTHEASTNUCLEAR ENERGY COMPANY l
draco SM.Scace Director - Nuclear hgi-ring Programs f
cc: NRC 1
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