ML19209A537

LER 79-043/01T-0:on 790906,two of Four Bolts on Hanger 32-GE-S41 Failed During Insp Program.Caused by Improper Installation of Bolt Anchor Shells.Defective Bolts Have Been Removed & Replaced by Wedge Type Anchor Bolts

ML19209A537
Person / Time
Site:	Peach Bottom
Issue date:	09/20/1979
From:	Colney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19209A532	List: ML19209A531 ML19209A537
References
LER-79-043-01T, LER-79-43-1T, NUDOCS 7910040293
Download: ML19209A537 (1)

Text

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EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES h 2 l The insrection procam perfomed in respense to IE Bulletin 79-02 iden- 1 2 1 tifled two anchors in one support which had centact between the bolt l 4 Pells and the support plate. These anchors are associated with the high I s I pressure service water (EPSW) systes line in the Unit 2 A RER rocm. I 6 I Even though failure of the eine during a seis=ic event would affect two I 7 l EPSV contn4 ent ecoline subsyste=s the safetr siznificance is consider- I

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44 CAUSE DESCRIPTION AND CCRRECTIVE ACTICNS ito l Centact between the bolt shells and suttert elate was caused bv i=treter I im I installatien of the bolt anchor shells. The defective bolt shells have I i 2i l been re=oved and replaced by wedre tvte anchor bolts and have been suc- 1 i, l cessfully torcue tested. The resultine ancher belt safety facter attain- l t t4 i ed is greater than 5. 1 W 3 80 STA S  % PCWER OTHER STATUS CISC RY OISCOVERY DE3CRIPTION I~~l [_Ej@ l 0 l 9 l 8 l@l N/A l lDl@l Work in IE Bulletin 79-02 l ACTIVITY CO TENT aELE ASin o, RE u ASE mcuNT c, ACTIVITY @ LOCATICN OF RELEASE @

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