ML20215N218

NPDES Noncompliance Notification:On 860902,pH of Sample from Wastewater Settling Basin Exceeded Permit Limit.Caused by out-of-svc Neutralizing Tank Ph Meter & out-of-calibr Ph Meter for Raw Water Pump

ML20215N218
Person / Time
Site:	Peach Bottom
Issue date:	10/23/1986
From:	Leitch G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	PENNSYLVANIA, COMMONWEALTH OF
References
NUDOCS 8611040458
Download: ML20215N218 (2)

Text

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U PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET

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P.O. BOX 8699 PHILADELPHIA, PA.19101 12isi 8414ooo October 23, 1986 Department of Environmental Resources Bureau of Water Quality Management One Ararat Blvd.

Harrisburg, PA 17110

SUBJECT:

Noncompliance with NPDES Permit Peach Bottom Atomic Power Station Permit No. PA 0009733 Gentlemen:

DESCRIPTION OF NONCOMPLIANCE:

The pH of a cample from discharge point 301 (Wastewater Settling Basin) exceeded the permit limit.

Date Samples Taken 9/2/86 Date Results Received: 9/2/86 Results of Analysis: 4.5 Permit Limitation: 6.0 to 9.0 NOTE: According to discussions with the Department, the pH limitations for this internal monitoring point will be removed from.the permit.

CAUSE OF NONCOMPLIANCE:

The cause of the noncompliance was an out of service neutralizing tank pH meter and a pH meter for the raw water sump which had drifted out of calibration.

DURATION OF NONCOMPLIANCE:

The duration of noncompliance was approximately eight hours.

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CORRECTIVE ACTION:

Soda ash was added to the settling basin to bring the pH into compliance. Investigation of the raw water sump pH meter indicated that the calibrations adjustment. knob needed an inordinate amount-of adjustment to bring the meter into calibr'a tion.

PREVENTION OF FUTURE OCCURRENCES The neutralizing tank pH meter was repaired by the instrument group on September 2, 1986. The pH meters were calibrated and calibration stickers were placed on the calibration adjustment 4

knobs to restrict movement.

Very truly yours, f

. M. eitch Superintendent

( j Nuclear Generation Division JAV/WTU:ala cc: Environmental Protection Agency Water Permits Branch Pennsylvania Section 3WM52 841 Chestnut Building Philadelphia, Pennsylvania 19107 Director Office of Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 Administrator Region I office of Inspection and Enforcement US Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 I

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