ML19323F119

LER 80-010/03L-0:on 800408,subsurface Planar Flax in Weld CSB-BF-12 Core Spray B Loop Found During Augmented Inservice Insp.Caused by Const Defect.Defect Removed,Repaired & Successfully Volumetrically Examined Per ASME Code

ML19323F119
Person / Time
Site:	Cooper
Issue date:	05/08/1980
From:	Doan P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19323F116	List: ML19323F114 ML19323F119
References
LER-80-010-03L, LER-80-10-3L, NUDOCS 8005280556
Download: ML19323F119 (1)

Text

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t d 61 DOCN ET NUMSER 69 EVENT OATE 7S REPORT DATE EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h I O l 2 l puring reactor refueling while performing augmented inservice inspections a subsur- 1 io i3i face planar flaw approx. .2" by .45" was located in weld CSB-3r-12, Core Spray "B" 1 IoI4I toop. (T. S . 3. 6. G) The core spray injection lines are located above the fnal I lo isi 1evel 1 and redundant systems were available. A failure of the weld, had it propagat-l l o 161 bd through wall, would have been detected and leakage would have been retained with-l l0l7l dn the orfmary containmont. This occurrence cresented no adverse conneononces from i IoIaI the standooint of oublic health and safety. I 7 g 9 80 SYSTEV CAUSE CAUSE COMP VA LV E CODE CODE SL6 CODE COMPONENT CODE SUBCODE SUSCODE o 9 I s I r l@ l8_j@ W @ I P 11 I P l E l X l X l@ (D_j@ lZ_j @

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44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lilol ghe subject flaw was a construction defect. It was detected through the use of new I iiii1 kiltrasonic techniaues with more sophisticated eouipment. Radionraohv was unnhle to I l

iil2Ifreveal indications found by ultrasonic testing. Defect was removed, repaired, and I j l i 131 lwas successfn11v voinmetrien11v evnmined oer ASME Code. A leak test will be per- I M lforamd durin g A r n rPitn _  !

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