ML20050A911

NPDES Noncompliance Notification 82-02:on 820318,approx 2,500 Gallons of Water Overflowed from Secondary Waste Neutralizing Tank WT-T-1 Into Plant Discharge Effluent Stream.Caused by Operator Error.Overflow Terminated

ML20050A911
Person / Time
Site:	Three Mile Island
Issue date:	03/22/1982
From:	Hukill H GENERAL PUBLIC UTILITIES CORP.
To:	Marracco F PENNSYLVANIA, COMMONWEALTH OF
References
5211-82-073, 5211-82-73, PA-0009920, PA-9920, NUDOCS 8204020386
Download: ML20050A911 (2)

Text

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DECIG5AIZD CEICI'llL L-714  !

Ceitified P.7 b .6/. d o b I o bjt GPU Nuclear

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- gg g{ P.O. Box 480 Middletown, Pennsylvania 17057 717-944-7621 Writer's Direct Dial Number:

March 22, 1982 ST 1-82-073 Mr. Frederick Marracco LO \

f3 Regional Water Quality Manager ",

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Pennsylvania Department of ~

Environmental Resources 'J 'l ; .?l p; g 407 South Cameron Street tp L,.' Apon. I Ilarrisburg, PA 17120 7932s..O.

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Dear Mr. Marracco:

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' ,\, s ,N Three Mile Island Nuclear Station NPDES Permit No. PA 0009920 L /JM4-Q'd-Non-Compliance Notification No. 82-02 In accordance with condition II.A.2 of the referenced permit. enclosed please find Non-Compliance Notification No. 82-02.

Should you require any additional information, please contact Mr. Tem Grace, of our Environmental Licensing Section at (717) 948-8793.

Sincerely, t

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h. D. Hukill Director, TMI-l HD!l:I.iG Vj f Enclosurc: Non-Compliance Notification No. 82-02 tcc : R. C. llaynes l

S DO 86050copg9 8203pg PDR GPU Nuclea' is a part of tne Generai Puth Ut. hues System %6

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REPORT OF NON-COMPLlANCE WITH CONDITIONS OF NPDES PERMIT PERMIT NO. PA 0009920 REPORT NO. 82-02 Identification of Occurrence:

Between 0730 and 0800 on March 18, 1982, approximately 2500 gallons of water was accidentally overflowed from the secondary Waste Neutralizing Tank (WT-T-1).

As a result, water with a pH of 3-5 was discharged from the neutralizing tank into the plant discharge effluent stream. Based on conservative estimates of dilution both experimentally and by composke sampling at the main station effluent discharge point (DSN 001) the plant discharge pH limit of 6.0 to 9.0 was not violated.

Description of Discharge:

PS" 105: ic - intermittent discharge of waste water frcm the Unit 1 Waste Neutralizing Tank. The system is sampled prior to discharge out of the station's main discharge line (DSN 001). The Waste Neutralizing Tank is used as a collection and treatment facility.

_Cause of the Non-Compliance:

The cause of the overflow from DSN 105 can be attributed to operator error.

Duration of Non-Compliance:

An approximate duration time of 4-5 minutes, during which approximately 2500 gallens of water overflowed into DSN 001.

Corrective Action to Prevent Further Recurrence:

In shcrt term, the system was shut down and the overflow terminated. A visual inspection was done at DSN 001 to confirm no obvious environmental impact occurred. The operator involved was counselled on his inappropriate actions, emphasizing the gravity of this easily prevented violation. In the long term, this incident will be reviewed by all plant operations crews. The Neutralizer Tark High Level Alarm Response Precedure will be revised to add e::plicit instructions to ensure operator knowledge of overflow consequences. The IWT l

Operating Procedure and the Neutralizing Tank Dump Procedure will be modified i to include specific oper tor guidance to prevent recurrences.

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Prepared >y : s t '7n Thoinsf7C'r)6e,/y'vironmentalLicensingEngineer Date: March 22, 1982 i

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