ML19260D589

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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 Entergy icon.png
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:
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 c

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l.h n J@[Z,_J@ ln Z l@ LZ.J@ 2 a 2(01 010 E- o .i J 8@ L., ' J @ W@ lY "l I ly 0ig,7i @ 3 o ,, 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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