ML19268A258

LER 79-019/01T-0 on 790621:during Seismic Support Insp Program, Reactor Core Isolation Cooling Piping Anchor Discovered to Have Two Bolts That Could Not Be Torqued. Caused by Improper Installation of Bolt Shells

ML19268A258
Person / Time
Site:	Peach Bottom
Issue date:	07/06/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19241B440	List: ML19241B439 ML19268A258
References
LER-79-019-01T, LER-79-19-1T, NUDOCS 7907170166
Download: ML19268A258 (1)

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oI. I tin 79-02, an anchor associated with the RCIC piping was found to have I o1a l two bolts which could not be properly torqued. An ongineering analysis I oI, I was perfaced and determined that the anchor would not be capable of l o 6 [_ withstandirs a corabination of operating and seismic icads without over- I

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CAUSE DESCRIPTION AND CORRECTIVE ACT!oNS R--] l The failure to reach the troper teraue was caused by improper installa- _]

[: i, I tion of the bolt t tells. The defective bolt shells have been removed and I p' i . j [ replaced by wedge type anchor bolts. An additional support strut has [

pgl been installed to increase the load carryir.g capability of this support 3 r ;- l to attain a minimum anchor bolt c1fety factor of five.  ;

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