ML20086K234

Environ RO 74-10:on 741211,effluent from Suspended Solids Settling Basin & Sewage Plant Exceeded Environ Tech Spec Limit.Cause Unknown.Sampling Procedure Not Performed So Accurate Determination of Suspended Solids Impossible

ML20086K234
Person / Time
Site:	Peach Bottom
Issue date:	12/21/1974
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Giambusso A US ATOMIC ENERGY COMMISSION (AEC)
References
RO-74-10, NUDOCS 8401260364
Download: ML20086K234 (2)

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12:518414000 \ ~.'~..Q, j/ 7 December 21, 1974 Mr.' A. Giambusso Deputy Director of Reactor Projects United States Atomic Energy Commission Directorate of Licensing Washington, DC 20545

Subject:

Environmental Deviation The following deviation was reported to Mr. Walt Baunack, A.E.C. Region 1 Regulatory Operations Office on December 11, 1974. In accordance with Section 7 4.2.A of the Environmental Technical Speci-fications, Appendix B of DPR-44/56 for Units 2 and 3 Peach Bottom Atomic Power Station, the following report is being submitted to the Directorate of Licensing as an Environmental Deviation.

Reference:

License Number DPR-44/56 Environmental Technical Specifications Appendix B Secticn 2.2.2 Report No.: 50-277/278-74-10 Report Date: December 21, 1974 Deviation Date: December 11, 1974 Facility: Peach Bottom Atomic Power Station Units 2 and 3 R.D. 1, Delta, Pennsylvania 17314 Identification of Deviation:

Effluent from suspended solids settling basin and sewage plant possibly in excess of Environmental Technical Specification limit.

Conditioss Prior to Deviation:

Unit 2 operating at approximately 75% power. Unit 3 operating at approximately 75% power until shutdown on December 6,1974.

Description of Deviation: 7/7 A review of the turbidity measurements obtained in values of /#

JTU for the sewage plant and settling basin effluents on December 4 and 8401260364 741221 ,no/p PDR ADOCK 05000277 34viv S PDR ,

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, , eMr. A. Giambusso O O December 21, 1974 Page 2 December 5,1974 indicated possible environmental deviation. The apparent deviations were based on established correlation between ppm suspended solids and JTU turbidity values. On December 3 and December 8,1974, data also indicated a possible Environmental Deviation based on JTU values. Corresponding samples for these dates were subsequently gravimetri ca lly analyzed. This analysis showed that the system ef flu-ents were within Environmental Technical Speci fication limi ts. No samples were obtained and therefore no such gravimetric analysis was performed on December 4 and December 5, 1974. Consequently, an Environmental Deviation is assumed to have occurred on these dates.

Designation of Apparent Cause of Deviation:

The comparison based on JTUs indicated that the Environmental Technical Specification settleable solids limit based on ppm may have been exceeded to a small degree. No definitive cause for the deviation has been identi fled.

Analysis of the Deviation Because of high river flows, the great amount of dilution, and the small amount that the effluent may have exceeded limits, no adverse effects to the environment are anticipated.

Corrective Action:

The plant procedure which is used to make daily comparisons between the sewage plant and settling basin effluents versus river quality, provides acceptabic criteria for the various effluents in terms of JTUs. It also cicarly directs that gravimetric sampics be ob-tained .1f the JTU values exceed an acceptable limi t. On December 4 and December 5,1974, such gravimetric samples were not obtained and ana-lyzed. Therefore, accurate determination of the quantitative level of

. suspended solids in ppm was not possible, due. to a deviation from a plant procedure. The individuals responsible- for implementing this procedure have been informed of the commi ttment to follow procedures.

Failure Data:

Envi ronmental Deviation Report Number 50-277/278-74-9

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Very truly yours,

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/ M. J. Cooney~: " Q /.

Asst. Genl. Supt.

cc J. P. O'Reilly Generation Division Director, Region i United States Atomic Energy Commissior.

631 Park Avenue King of Prussia, PA 19406 i

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