ML19210D352

LER 79-096/01T-0:on 791110,nonisolable Weld on Pump a Suction Line Test Connection Discovered Leaking.Cause Unknown.Line Cut,Plugged & Capped.Affected Weld Connections Will Be Metallurgically Evaluated

ML19210D352
Person / Time
Site:	Brunswick
Issue date:	11/21/1979
From:	CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19210D351	List: ML19210D350 ML19210D352
References
LER-79-096-01T, LER-79-96-1T, NUDOCS 7911260338
Download: ML19210D352 (1)

Text

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t.lCENSEE EVENT REPORT CONTROL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 GTl 8I 9Nl ClLICENSEE P l El Pl 1[gl50 j 0 ] -l 0 l 0 ] 0 ] 0 l 0 l - l 0 l250 lgl l lg 14 LICENSE NUMBER 26 4 LICENSE l 1 l l j TYPE1l JOl jgl$7 CA T 58 7 CODE 1 CON'T E "

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68 69 EVENT CATE 74 REPORT DATE 7 8 60 61 DOCK ET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h I o l 2 I lWhile work was progressing on the seal replacement of the "A" reactor recirculation o a l pump, a mechanic noted that a nonisolable weld on pump "A" suction line test con- l o 4 Inection was leaking. The 3/4-inch line is about 2-1/2 feet in length and contains a 90* elbow, two 3/4-inch valves, and a cap. The crack was associated with the pipe to l o s o e telbow weld away from the recirculation loop. I O 7 i Technical Specifications 6.9.1.8c l I

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18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION EVENT YE AR REPORT No. CODE TYPE N O.

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o lThe line*was cut upstream of the 90* elbow, plugged, and capped per an approved plant lTTTl [ modification. A similar modification was performed on the "B" pump during this period.i g JThe Unit No. 2 "B" pump was modified in 1977 and the Unit No. 2 "A" pump will be modi-l g , l 31 lfied at the next scheduled cold shutdown (presently December 1979). Affected welds on[

L' L4J Iboth Unit No. 1 connections will be metallurgically evaluated to determine the cause [

7 8 9 80 STA S  % POWER oTHER STA TUS is O RY DISCOVERY DESCRIPTION W l,_Gj @ l0l 0 l 0l h l N/A l l A l@l Mechanic Surveillance 0 l

ACTIVITY CO TENT RETE ASEo CF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE i c {_gj @ W@l N/A 44 l N/A 45 80 l

7 8 9 10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 7

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LER CONTINUATION--RO #1-79-96 FACILITY: BSEP Unit No. 1 EVENT DATE: 11-10-79 of failure.

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