ML19225C803

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LER 79-033/01T-0 on 790712:two shell-type Anchors Failed Torque Test.Caused by Improper Installation.Bolts Replaced & Successfully Tested
ML19225C803
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 07/26/1979
From: Cooney M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19225C802 List:
References
LER-79-033-01T, LER-79-33-1T, NUDOCS 7908020469
Download: ML19225C803 (1)


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+>a w ci ooc a c T r.L,.,o o, w i. ;mNr oATt<4 , EVENT DESCmPTICN AND PAC 0A8LE CONSEGuENCES h 1 Insrection crocram cerformed in response to IE Bulletin. 79-02 identified 1 I / i;two shell type anchors in one support which fc ' led to torque test prop-l,, 14[erly. These anchors are associated with the emergency cooling water

]Ti] l system, which is only used in unusual events such as flood or los? of lnec-f n ; mir sident ,ith I i ,, Iconowinzo Pond. LikWhnnd o f w f mi c n"nne j ,, junusual environmental events is considered highly unlikely. Therefore, t y ; isafety significance is minimal. Similiar occurrence LER 2-79-35/IT.

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gj Two of four shell type anchor bolts were improperly installed. The lpnchor bolts failing the test were immediately replaced in accordance

__j , yith tect procedure with wedge type anchors and successf ally tested, t , l-,m t___1 TO I u d)m STA'..N*CotH GTHE4 Liar

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