ML19242D265

LER 79-020/01T-0 on 790724:during Insp,Inoperable Pipe Hanger Baseplate Observed.Caused by Improper Installation of Concrete Expansion Anchors in Baseplate Due to Lack of Formal Procedures During Initial Installation

ML19242D265
Person / Time
Site:	Beaver Valley
Issue date:	08/07/1979
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19242D250	List: ML19242D249 ML19242D265
References
BVPS:JAW:700, LER-79-020-01T, LER-79-20-1T, NUDOCS 7908140768
Download: ML19242D265 (1)

Text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

['o TT1 I During performance of the baseplate inspection procedure developed to comply with IE l g l Bulletin 79-02, an inoperable baseplate was observed. The pipe hanger baseplate was l ITTT1i H-208 which is on the three inch charging line near the regenerative heat exchanger in ITTTl I c ntainment. The concrete expansion anchors in the baseplate were improperly installed l o s l and f ailed during the pullout. test because of oversized holes. l ITITl i I o a I l 7 8 9 00 SYSTE M CAUSs CAUSE COMP. VALVE CODE CODE SUSCODE COMPONENT CODE SUSCOOE SU8 CODE O 9 l Pl Cl@ y@ Z l@ l S l U l P l 0 l R l T l@ ]@ l Z l @

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40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l The failure was attributed to the lack of a formal installation procedure uring the l i i l initial installation. The hanger has been repaired bv installine :ew' anchors. A l 7 l complete report of inspection results and repairs will be made in the response to IE l i 3 l Bulletin 79-02. l mI 7 8 9 l

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