ML20086G315

Environ RO 76-4:on 760112,sewage Plant Effluent Suspended Solids Exceeded Environ Tech Spec Limit.Caused by Solids Carried Over from Settling Zone Into Chlorine Contact Tank. Chlorine Contact Tank Pumped Out

ML20086G315
Person / Time
Site:	Peach Bottom
Issue date:	01/22/1976
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-76-4, NUDOCS 8401110205
Download: ML20086G315 (2)

Text

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. 'f PHILADELPHIA ELECTRIC COMPANY 23O1 M ARKET STREET PHILADELPHIA. PA.19101 (215)841 4o00 January 22, 1976 Mr. J. P. O'Reilly Director, Region 1 l Office of Inspection and Enforcement ~

U.S. Nuclear Regulatory Commission 631 Park Avenue ~ ' -l King of Prussia, PA 19406

Subject:

Environmental Deviation The following deviation was reported to Mr. Walt Baunack, Office of Inspection and Enforcement, Region 1, United States Nuclear Regulatory Commission on January 12, 1976.

Reference : License Number DPR-44/56 Environmental Technical Specifications: 2.2.2 Report No.: 50-277/278-76-4 Report Date: January 22, 1976 Deviation Date: January 12, 1976 Facility: Peach Bottom Atomic Power Station Units 2 & 3 R.D. #1, Delta, Pennsylvania 17314 Identification of Deviation:

Sewage plant effluent suspended solids in excess of the Environmental Technical Specification limit.

Description of Deviation:

Routine gravimetric analysis showed that the suspended solids concentration of the sewage plant effluent was 53 ppm greater than that of the riverwater.

Designation of Apparent Cause of Deviation:

An investigation showed that solids had been carried over fron the settling zone into the chlorine contact tank due to inadequate sludge return and from the chlorine contact tank to the effluent due to high flow.

0401110205 7 0

PDR ADOCK 0 PDR S

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' Mr. J. P. O'Rei( )

January 22, 1976

() 50-277/278-76-;

Page Analysis of Deviation:

Because the sewage plant effluent is diluted by a factor of approximately 100,000 with circulating water flow, the environmental impact of this deviation is minimal.

Corrective Action:

The chlorine contact tank was pumped out, removing most of the suspended solids which had been carried over from the settling zone. The sludge return flow was increased. A follow-up sample taken on January 14, 1976 revealed that the effluent suspended solies concentration was withir.

Environmental Technical Specification limits. The Philadelphia Electric Company Engineering Department is inuestigating, the Environmental Deviation.

Failure Data: .

Environmental Deviation Report 50-277/278-76-2 and 50-277/278-74-10 Very truly yours, s

M. . Cooney S erintendent Generation Division - Nuclear cc: Mr. John G. Davis Acting Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. William G. Mcdonald Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, DC 20555 l

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