ML20086H677

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Telecopy AO 75-46:on 750725,hydraulic Snubber on RHR Pump Discharge Line C Found Inoperable.Caused by Failure of Street Elbow & Loosening of Reservoir Retaining Bolts. Snubber Repaired
ML20086H677
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 07/25/1975
From: Ullrich W
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086H676 List:
References
AO-75-46, NUDOCS 8401190550
Download: ML20086H677 (1)


Text

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a PHILADULPHIA ELECTRIC COMPANY /

Peach Dotton Atomic Pover Gtation Og/fy/pp' U cit a,. Petanoylvania 17314

[d July 25. 1975

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fat c/A etcf*

Mr. Jaues P.

O'Reilly, Director Office of Inspection. and Enforcement Region 1 United States Duclene Regulatory Commission 631 Park Avenue King o f Trustni.rs _P.en n ny1 + = t s -

lo'unn S ub,1 e e t :

  • Abnorryd oneurrenw-7tretTou r ThWfic at"io_,

.[.

,y Confirming R..S. Pleiochuann!s. phone conversation with Mr. Caphton Region 1

... _.3 United States I;uclear Regulatory Conninaion on. July _25, _

. -.. - - -.=

Reference:

License Nunber DPR-56 Technical Speciffention

Reference:

3.11.D Beport

'~r:

5.O-276.-765 E5 -

D r=p *w *_D r t rey

.T u i i+

'5 M _

1_O 'ly

. Occurrence Date:

July 25. 1975

-Facility:

Peach Botton Atenic Power Station LUr R.D.

1.- Delta. Pennsylvania - 17 31k '

Identifienfion,of Ocpurrence :

Inoperable hydre.ulic enubber on RHR pump discharge line.

Conditiono Prior to Occurrence:

Unit 3 operntsng at approximately s0%< power.

Doncription of Occurrence:

A' routine innpection of Unit 3 nubbern outside the drywell identified snutber 3-IO-HL-S-12 as failed.

Designation of Apparent Cauce of Occurrence:

Failure of a st reet. cibow andt, loos.c? iaa. of reservoir retaining bolts f rom.vt:'uration caused the reservoir to fall cift.it s.

a i

mount.,

Analysis of Occurrence (Safety Implications)

No damage to piping or supports was noted during the ~~

inspection.- Safety implicationn~are, therefore, ninimal.

Corrective Action:

The onubber ir being repaired.

The ur.d)$$ tion procedure Hill s

being revised to call attention to the renervoir retnining bolta'and the elbow on the reservoir.

Snubber surveys are

.(3 continuing on a routine basic.

Unit: 2 snubber curvey van conpleted catifactorly in June, 1975.- No other snubbers were found inoperabic in Unit 3..

Failure Data:

AO-50-277-7k k5.

50-277-7k-34 50-278-7L-16 50-278-7k 8

Very'truly yours.

Wbm/

~

m W,T.

Ullrich, Superintendent i

Peach Dottom Atcuic. Power Station WTU/nfo

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e 8401190550 750804 t

PDR ADOCK 05000278 g

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