05000336/LER-1981-008-01, /01T-0:on 810213,determined Spring Can Type Hanger Installed Improperly,Resulting in Overstressed Socket Welded Joint.Caused by Incorrect Design.Hanger Removed & Pipe Isolated & Depressurized.Design to Be Corrected

/01T-0:on 810213,determined Spring Can Type Hanger Installed Improperly,Resulting in Overstressed Socket Welded Joint.Caused by Incorrect Design.Hanger Removed & Pipe Isolated & Depressurized.Design to Be Corrected

ML20008E925
Person / Time
Site:	Millstone
Issue date:	02/27/1981
From:	Resetar J NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20008E919	List: 05000336/LER-1981-008, Forwards LER 81-008/01T-0 05000336/LER-1981-008-01, /01T-0:on 810213,determined Spring Can Type Hanger Installed Improperly,Resulting in Overstressed Socket Welded Joint.Caused by Incorrect Design.Hanger Removed & Pipe Isolated & Depressurized.Design to Be Corrected
References
LER-81-008-01T, LER-81-8-1T, NUDOCS 8103100510
Download: ML20008E925 (1)

LER-1981-008, /01T-0:on 810213,determined Spring Can Type Hanger Installed Improperly,Resulting in Overstressed Socket Welded Joint.Caused by Incorrect Design.Hanger Removed & Pipe Isolated & Depressurized.Design to Be Corrected

Event date:
Report date:
3361981008R01 - NRC Website

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l o 12 ] l Duri.ng routine power operation, an as-built hanger review of the reactor vessel

, o,3 j ; head vent piping system determined that a spring can type hanger was installed I

incorrectly. The improper installation resulted in overstressing a socket welded i

, joint.

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