ML20086H916

Environ RO 75-11:on 750618,second Cooling Tower Removed from Svc within Allowable 48 H Maint Period.Caused by Failure of Banding Around Distribution Header Which Resulted in Blowout of Portion of Wooden Structure

ML20086H916
Person / Time
Site:	Peach Bottom
Issue date:	06/27/1975
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Giambusso A Office of Nuclear Reactor Regulation
References
RO-75-11, NUDOCS 8401200347
Download: ML20086H916 (2)

Text

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P PHILADELPHIA ELECTRIC COMPANY

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PHILADELPHIA. PA.19101 /\' b I

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1215 841-4000

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% JUL1 E'l5-June 27, 1975

{ .f Mr. A. Giambusso

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Dire tor ,

Division of. Reactor Licensing Office of Nuclear Reactor Regulations United States Nuclear Regulacory Commission Washington, DC 20555 s.

Subject:

Environmental Deviation The following deviation was reported to Mr. Walt Baunack, Region 1, Office of Inspection and Enforcement, United States Nuclear Regulatory Commission on June 18, 1975

't eforence: License Number DPR-44/56 Environmental Technical Specifications 2.1 Report No.: 50-277/278-75-11 Report Date: June 27, 1975 Deviation Date: June 18, 1975 F aci lity: Peach Bottom Atomic Power Station Units 2 and 3 R.D. 1, Delta, Pennsylvania 17314 Identification of Deviation:

Removal of a second cooling tower from service within the allowable 48-hour maintenance period.

Conditions Prior to Deviation: .

With the 'C' cooling tower out of service for scheduled main-tenance (less than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />) the 'A' cooling tower was removed from service due to a gross leak on the distribution header.

Designation of Apparent Cause.of Deviation:

Failure of the banding around the distribution header which resulted in the blowout of a portion of this wooden structure.

6401200347 750627 PDR ADOCK 05000277 S PDR

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. -e Mr.A.Giambusso() ()

50-277/278-75-11

, June - 27,~ 1975 Page 2 Analysis of Deviation: .

Since the "A" to,wer was out of service for only 30 minutes, there were no significant environmental consequences as a result of this deviation. River flow during this period was in excess of 45,000 cfs.

Corrective Action:

The damaged wooden planking was replaced and secured by a stainless steel plate and the tower was returned to service.

Failure Data:

Environmental Deviation Reports 50-277/278-74-2,- 50-277/278-75-1, 50-277/278-75-2, 50-277/278-75-6, 50-277/278-75-8 and 50-277/278-75-10.

Very truly yours,-

.J Cooney

. Ass' Gen't Super'ntendent Generation Divis on cc: Mr. J. P. O'Reilly Director, Region I-Office of Inspection and Enforcement United States fluclear Regulatory Comnission 631 Park Avenue ,

King of Prussia, PA 19406 ,

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