ML19308A437

RO-3-79-31/1P:on 791003,insp Performed in Response to IE Bulletin 79-02 Revealed Failure in Support in Loop Core B Spray Min Flow Line.Caused by Improper Installation of Anchor Bolts.Bolts Replaced

ML19308A437
Person / Time
Site:	Peach Bottom
Issue date:	10/04/1979
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
References
NUDOCS 7910150483
Download: ML19308A437 (2)

Text

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. r9sstucELPW1A 6GCTRIC f***W -" -- -

Peach escros.atense Power Stulon N .Dennsrivania l . _ _ ,,

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.Actober 4, 1979 s

l 3dr Sayce H. Grier -

-office .ed Insp-%.and Enfaa:comenc -

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.. :lfeested States. Nuc. lear Raguhseory,Go,sumission , , , . , ,, .,_

431.Pwck Avenue .

King of.Peussia, PA 19496

.SB83ECT-: ,REPORTA82 OCCURRENCE PROMPT 1001FTCATIbN --

• Cenfirming J.K. Davenpoax* s conweesseion wish Mr. Greenman,

?Reginn i, Unirad States Nucinar degulacocy Ce M aaion en October 4, 1979. .  ;

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.Refecence: Docket Na. 50 258 -

l Feach 40cton Unit.3 l rechnical Specifkation JIeferences.: 4.9.2 H .(9). 3.5.F.3 ,

Aspect No. 3-;79-31/IP .

4)ocorrence Ouse: Ocrahae 5,1979 Titanci;fication .of Occurrence:

Ehe continuing. seismic anchor inspection protram hehng poeformed in response so I.f Bestierin 19-02 has ident-ified a fatiure in a supper.c associated u.t.cn the Una.c 3 "B" icep ears spray minimum flow ~

line. 1 *~O 0 D

. Apparent Cause of Occurrence:

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kupcaper installation of anchor .beizs. ' - - O' D h.. i

. Analysis of Occurrence: v3-~~@ L "

,. La During che inspection of hanger 3-14-MB-S2"1. the two .heles associated with chts rigAd angie iron smyport were found detached from the =mi-i.

Tlie madecy significance is wirnimal because .ituit 3 reactor is in the cold -- J sAusdown condi. tion for refueling and -therefore the cbre, spray system is ~

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nat revuited to be operabis. -

. 1 Co~rrective Action: I Ancher 5-14,HB-S21 is a rigid angle iron hanger with two anchor bo.lcs.

' Replacement af the 2 failed bolts Mth 6" .Hilei Kwik bolts is in peogress.

The attranment of an acceptaham safecy facter is anticipated within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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j Previous Failuren:*

2-79-33/IP 7-78-35/1F I

3-79-10/17 -

3-79-73/IP 1-74-7%/lF '

3-79-26hP ,

2-79-43/1.P' s% 7t*-.i !] l P 3-79-30/IP Very I n s ' <v yen tr= .

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