ML20086F871

AO 75-75:on 751117,reservoirs of Two Hydraulic Snubbers Found Empty.Caused by Leaking O-rings & Gaskets.Defective gaskets,seals,O-rings & Fittings Will Be Replaced & Snubbers Will Be Checked

ML20086F871
Person / Time
Site:	Peach Bottom
Issue date:	11/26/1975
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Boyd R Office of Nuclear Reactor Regulation
References
AO-75-75, NUDOCS 8401090611
Download: ML20086F871 (2)

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PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET PHILADELPHI A. PA.19101 y

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November 26, 1975 2'D v'Oi' M ers,r5.

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Mr. Roger S. Boyd ,75 Acting Director ~~

Division of Reactor Licensing

• Office of Nuclear Reactor Regulations United States Nuclear Regulatory Commission Washington, DC 20555

Subject:

Abnormal Occurrence The following occurrence was reported to Mr. Walt Baunack, Region 1, Office of Inspection and Enforcement, United States Nuclear Regulatory Conaission on November 18, 1975 Written notification was made to Mr. James P. O'Reilly, Region 1, Office of Inspection and Enforcement, United States Nuclear Regulatory Commission on November 18, 1975 In accordance with Section 6.7 2.A of the Technical Specifications, Appendix A of DPR-44 for Unit 2 Peach Bottom Atomic Power Station, the following report is being submitted to the Directorate of Reactor Licensing as an Abnormal Occurrence.

Reference:

License Number DPR-44 '

Technical Specification

Reference:

4.11.D.1 Report No. : 50-277-75-75 Report Date: November 26, 1975 Occurrence Date: November 17, 1975 Facility: -

Peach Bottom Atomic Power Station R.D. 1, Delta, Pennsylvania 17314

,I_dentification of Occurrence:

Inoperable hydraulic snubbers, Conditions Prior to Occurrence:

Maintenance outage in progress, reactor shutdown.

Description of Occurrence:

During a routine inspectiori of the Unit 2 hydraulic snubbers, the reservoirs of two hydraulic snubbers were found empty.

8401090611 751126 PDR S ADOCK 05000277 PDR Mzj.j2 m COPY SENT REGION, ---n .

o a  :

Mr. Roger S. Boyd

• 50-277-75-75 ,

I November 26, 1975 Page 2 Designation of Aooarent Cause of Occurrence: [

Inspection revealed leaking 0-rings and gaskets.

Analysis of Occurrence:

Inspection indicated no damage of piping or supports. The i discovery of the empty reservoirs by this routine inspection demonstrates  !

the merits of the surveillance programs.

Corrective Action:

The defective gaskets, seals, 0-rings, and fittings will be replaced. Following repair, the snubbers will be checked in a test stand for proper operating capabilities and leaks.

Failure Data:

I Similar failures on Unit 2 hydraulic snubbers were reported as A0-50-277-74-45 and A0-50-277-75-70.

Very truly yours, M. . Cooney Superintendent Generation Division - Nuclear cc: Mr. J. P. O'Reilly Director, Region 1 Office of Inspection and Enforcement U.S. Nuclear Regulatory Conrnission 631 Park Avenue King of Prussia, PA 19406 3