ML20086G313

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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  Constellation icon.png
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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7-PHILADELPHIA E'LECTRIC COMPANY 2301 MARKET STREET PHILADELPHIA, PA.19101 cy 2 si e414ooo

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January 23, 1976 {

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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"

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Report No.:

50-277/278-76-5

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Report Date:

January 23, 1976

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Deviation Date:

January 14, 1976 Facility:

Peach Bottom Atomic Power Station

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

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8401110199 760123 PDR ADOCK 05000277 N

S PDR COPY SENT REGION

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O 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

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

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