ML20086G313

Environ RO 76-5:on 760114,settling Basin Effluent Ph Exceeded Environ Tech Spec Limit.Caused by Neutralizing Tank Discharged to Settling Basin W/O Being Neutralized Due to Improper Valving Lineup.Basin Isolated & Neutralized

ML20086G313
Person / Time
Site:	Peach Bottom
Issue date:	01/23/1976
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-76-5, NUDOCS 8401110199
Download: ML20086G313 (2)

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PHILADELPHIA E'LECTRIC COMPANY 2301 MARKET STREET PHILADELPHIA, PA.19101 '

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January 23, 1976 { ,,,,,,mut ,,

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Mr. J. P. O'Reilly ,

M Director, Region I s tu -

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission .

631 Park Avenue y King of Prussia, PA 19406  ;

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Dear Mr. O'Reilly:

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Subject:

Environmental Deviation j -

ThefollowingdeviationwasreportedtoMr..Jimhartlow, Office of Inspection and Enforcement, Region I, United States Nuclear Regulatory Conmission on January 15, 1976.

Reference:

License Number Dpr-44/56 Appendix B -

f y Environmental Technical Specifications: 2.2 3"  %

Report No.: 50-277/278-76-5 /

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Report Date: January 23, 1976 [

Deviation Date: January 14, 1976 Facility: Peach Bottom Atomic Power Station (

Units 2 & 3 g R .D. 1, De l ta, Pennsylvania 17314

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Identification of Deviation:

Settling basin effluent pH in excess of Environmental Technical Specification limit.

Conditions Prior to Deviatio'n:

Unit 2 operating at approximately 99X power. Unit 3 shutdown for maintenance outage.

Description of Deviation:

Routine analysis of the settling basin effluent disclosed a a pH of 11 3 Dy ignation of Apparent Cause of Deviation:

.The neutralizing tank was discharged to the settling basin l ,

without being neutrali zed due to an improper volving li,ne-up564 -

l 8401110199 760123 PDR ADOCK 05000277 N S PDR

COPY SENT REGION

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. Mr. J. P. O'Reilly

• 50-277/278-76-5 Januiry 23, 1976 ,

Page 2 Analisis of Deviation:

Because the settling basin flow is diluted by a factor of approximately 100,000 with circulating water flow, the pH of the circu-lating water was unaf fected. Therefore, the environmental impact was minimal.

Corrective Action:

The settling basin was immediately isolated and neutralized.

j The valve in the secondary flow path from the neutralizing tank to the i settling basin was locked closed. ' Correct operation was emphasized to the operators.

Failure Da a: ,

None. ,

4 Very truly yours, M. . Cooney Superintendent Generation Division - Nuclear cc: Mr. J. G. Davis, NRC ^

Mr . W. G . McDona l d, NR C i

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