ML20086G158

Environ RO 76-28:on 760607,sewage Plant Effluent Suspended Solids Exceeded ETS Limit.Caused by Inoperability of Sludge Return Pump.Sludge Removed from Chlorine Contact Tank & Return Pump Returned to Svc

ML20086G158
Person / Time
Site:	Peach Bottom
Issue date:	06/17/1976
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Stello V Office of Nuclear Reactor Regulation
References
RO-76-28, NUDOCS 8401100100
Download: ML20086G158 (2)

Text

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.. PHL ADEL.PHIA ELECTRIC COMPANY 2bO1 MARKET STREET ,

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PHILADELPHIA. PA.19101 8 ,

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.-- SN21 ; gyp, June 17, 1976 g igwn i

A" fqiy Mr. Victor Stello, Jr. _

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Director Division of Operating Reactors Office of Nuclear Reactor Regulations United States Nuclear Regulatory Commission Washington, DC 20555

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 June 8, 1976.

Reference:

License Number DPR-44/556' Appendix B .. ,

Environmental Technical Specifications Section 2.2.2 Report No.: 50-277/278-76-28 Report Date: June 17, 1976 Deviation Date: June 7, 1976 Facility: Peach Bottom Atomic Power Station Units 2 and 3 R.D. #1, Delta, PA 17314 Identification of Deviation:

Sewage plant effluent suspended solids were 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 88 ppm greater than that of the river water.

8401100100 760617 PDR ADOCK 05000277 S PDR don

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COPY SENT REGION 'N J

e Mr. Victor St o, Jr. 50-277/278-76-28 June 17, 1976 Page 2 Designation of Apparent Cause of Deviation:

Inoperability of the sludge return pump resulted in a carryover o'f sludge from the settling zone to the chlorine contact tank and discharge to the effluent upon increased flow.

Analysis of Deviation:

The sewage plant effluent suspended solids concentration was below the Technical Specification limit within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

Because of the large dilution factor for the sewage plant effluent from the circulating water flow and due to the short period of time the effluent was above the Environmental Technical Specification limit, the environmental impact of this deviation is minimal.

Corrective Action:

Sludge was removed from the chlorine contact tank.

The sludge return pump was returned to service.

Failure Data:

Environmental Dev.iation Report 277/278-76-26.

'Very truly yours, l

Su rintendent G eration Division - Nuclear cc: Mr. J. P. O'Reilly NRC Reg. Office l

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