ML19257B379

LER 79-109/01T-0:on 791228,while Capping Reactor Recirculation Pump 3/4-inch Suction Test Connection,Leak Found in Base Metal of Reducing Insert Upstream.Possibly Caused by Weld Arc Strike on Reducing Insert.Line Plugged

ML19257B379
Person / Time
Site:	Brunswick
Issue date:	01/10/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19257B369	List: ML19257B368 ML19257B379
References
LER-79-109-01T, LER-79-109-1T, NUDOCS 8001150633
Download: ML19257B379 (2)

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74 75 REPORT DATE 60 7 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o l 2 l l While work was progressing on capping the 2A reactor recirculation pump 3/4-inch I o l a l l suction test connection, a mechanic noticed a leak in the base metal of the 1" x 3/4" l o 4 l reducing insert upstream of the section being worked. This insert is on a section of I o s pipe which cannot be isolated from the reactor. l I

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el 42 43 44 47 CAUSE DESCRIPTION AND CORRECrlVE ACTIONS h i o iThe reducing insert was removed and the line olucced and canned oer an aooroved olant I The cause of the leak carinot be determined until an analysis is per-1 g l modification.

g ] formed; however, it appears from preliminary investigation that the cause was a weld  ;

, 3 l arc strike on the reducing insert. "B" loop test connection was visually inspected j I

L'_.l.4 ] I 80 7 8 9 S A$5 *.POWE R o'THER STATUS DisCOV RY DISCOVERY DESCRIPTION y [_Gj@ l 0l 0] 0l@l N/A l l A l@l Mechanic Observation l ACTIVITY CONTENT RELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE i e W @ Wgl N/A l l N/A l 7 8 9 10 11 44 45 80 Pf aSONNEL EXPOSURES NUV9E R TYPE DESCRIPTION 39 Lij._ J l O I 01 O l@l z l@l NA . l

,ERSO~~E L iN;JiES NUv.ER oESCRi,TiONe 1747 00 i a 10 I o 10 l@l12 N/A l 7 8 9 11 80 LOSS oF oR DAMAGE TO FACILITY TYPE DESCRIPTION

[TTol8 9I z l@l10 N/A l 7 80 PUB L ICITY NRC USE ONLY

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68 69 80 5 NAME OF PREPARER

. . o W son, h. PHONE: 919-457-9521 2, 8 00115 0$D .

LER CONTINUATION -- RO# 2-79-109 Facility: BSEP Unit No. 2 Event Date: 12-28-79 and no problems were detected. The three remaining, reducing inserts will be liquid penetrant tested during the 1980 refueling outages.

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