ML19260D589

LER 80-003/01T-0:on 800121,while at Cold Shutdown,Boron Buildups Identified on Loop B of Reactor Bldg Spray & Piping.Buildups Verified to Be Cracks in heat-affected Zone of Schedule 10 Pipe to Fitting Welds

ML19260D589
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/04/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19260D580	List: ML19260D579 ML19260D589
References
IEB-79-17, LER-80-003-01T, LER-80-3-1T, NUDOCS 8002110476
Download: ML19260D589 (1)

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%S 64 6i DOCK ET huveta W* EvtNT Dart 38 M,,OHTDATE DC EVENT DESCRIPTION AND PROB AOLE CONSEQUENCES h o 2 IWhile'at cold Shutdown condit.Lons. boron builduo was identified on Loon B i Io l a i lof Reactor Buildine Sorav at two locations. A third location of boron o a lbuilduo was identified durinn the Cold Shutdown visuaJ examination of l l n I s I lpipine ns recuired by IE Bulletin (179-17. Ite- 9(a). All three locatio W o 6 lwere verified by licuid nenetrant surfnen ov,-in,rion to be cracks in the 1

[_o_lL) llica t .Af f e c t ed_lcne o f the S.S. Schedule 10 nine to fittine (elhow) welds. I Occurrence similar to LER's 50-313/74-11, 75-07, 75-08, 76-25 76-28. Reportable 7

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CAUSE CESCR.PfiCN AND CO AREC flVE ACTIONS 27 i o IThe affected pipine contained starnant. e veenated borated water, as I lililIdefined by I.E. Bulletin #79.17. The nine sections were from the sn e I lii21I" heat" 6 contained 0.08% Carben content. 'Iwo were field welds, one was I l~ TTl I shop . Cause is assumed to be IGSCC. Pipe spool pieces were replaced with; E ,llow cnrhon S.S. nine. All welds of R.B. Spray visually examined per ISI ,

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