05000271/LER-1983-011-03, /03L-0:on 830325,during Visual Insp,Shock Suppressor MS-6 on Main Steam a Piping Found W/No Visible Fluid in Sight Glass & Failed to Lock Up.Caused by Damaged Lenztee.Snubber Cleaned & Rebuilt

/03L-0:on 830325,during Visual Insp,Shock Suppressor MS-6 on Main Steam a Piping Found W/No Visible Fluid in Sight Glass & Failed to Lock Up.Caused by Damaged Lenztee.Snubber Cleaned & Rebuilt

ML20023B474
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	04/25/1983
From:	Pelletier J VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20023B468	List: 05000271/LER-1983-011, Forwards LER 83-011/03L-0 05000271/LER-1983-011-03, /03L-0:on 830325,during Visual Insp,Shock Suppressor MS-6 on Main Steam a Piping Found W/No Visible Fluid in Sight Glass & Failed to Lock Up.Caused by Damaged Lenztee.Snubber Cleaned & Rebuilt
References
LER-83-011-03L, LER-83-11-3L, NUDOCS 8305050108
Download: ML20023B474 (1)

LER-1983-011, /03L-0:on 830325,during Visual Insp,Shock Suppressor MS-6 on Main Steam a Piping Found W/No Visible Fluid in Sight Glass & Failed to Lock Up.Caused by Damaged Lenztee.Snubber Cleaned & Rebuilt

Event date:
Report date:
2711983011R03 - NRC Website

text

1 m-mx NRC FORM 366 U.S. NUCLEAR REGULATOQY COMMISSION (7 77)

LICENSEE EVENT REPORT LER 83-11/3L CONTROL BLOCK: l l

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h 10 li j l During a visual inspection, shock suppressor MS-6 on Main Steam "A" piping was foundl i O l a i l with no visable fluid in its sight glass and subsequently f ailed to lock-up within l l o 14 i i procedural tolerance when functionally tested in the as-found condition. This is I

loisl l contrary to Tech. Spec. 3.6.1.1.

Since MS-6 was returned to service prior to start-l 10 is l 1 up and due to the lack of a seismic event recuirine it to function. no consecuences l l0l7)l adverse to public health 6 safety resulted.

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I i1 i7i l Snubber was then functionally tested and returned to service.

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