ML20041F828

LER 82-004/01T-0:on 820217,exam of Radiograph on Weld 85 on Isometric Drawing 11 Indicated Circumferential Void.Caused by Improper fit-up Weld & Insp During Initial Const.Section of Weld Replaced & Socket Welded to Coupling

ML20041F828
Person / Time
Site:	Oconee
Issue date:	03/03/1982
From:	Kutzer J DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20041F826	List: ML20041F825 ML20041F828
References
LER-82-004-01T, LER-82-4-1T, NUDOCS 8203170458
Download: ML20041F828 (1)

Text

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sysNT ossenirnoN Ano Paosasta consacuaNCEs h o l On February 17, 1982, examination of a radiograph on weld #85 on Isometric r.m l Drawing 11 of system 51A (llPI) indicated a 360 circumferential void. The ,

gjoint involved is the 1 in. nozzle warming line connection to.the 2 in. normal I g l makeup line on the 1A2 pump side. Failure of this weld would have resulted in a

, , g 0.01 ft2 RCS leak which is \ the smallest break size that has the potential to I g l uncover th'e core. Since one llP1 pump flow exceeds this break flow, it is con-era i sidered that this event did not have a significant affect on the health and ,

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.i g g l7 9lg i o lThe annaront canco of this incident was improper fit-up, weld, and inspection l g lduring initial construction. A 12 in section of the 2 in. was replaced, and ,

,the 1 in. pipe was socket welded to a coupling that was connected with a

, 3 [ " saddle on" fit-up, full penetration weld. Identical joints will be checked on ,

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