05000368/LER-1980-090-03, /03L-0:on 801205,increased Accumulation of Liquid Wastes Found in Waste Tanks.Caused by Vibration Induced Cracking on Charging Pump Suction Header at Junction of Reactor Makeup Water Tank Supply.Pipe Spool Piece Replaced

/03L-0:on 801205,increased Accumulation of Liquid Wastes Found in Waste Tanks.Caused by Vibration Induced Cracking on Charging Pump Suction Header at Junction of Reactor Makeup Water Tank Supply.Pipe Spool Piece Replaced

ML19340D887
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/26/1980
From:	Shiveley C, Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19340D836	List: 05000368/LER-1980-090, Forwards LER 80-090/03L-0 05000368/LER-1980-090-03, /03L-0:on 801205,increased Accumulation of Liquid Wastes Found in Waste Tanks.Caused by Vibration Induced Cracking on Charging Pump Suction Header at Junction of Reactor Makeup Water Tank Supply.Pipe Spool Piece Replaced
References
LER-80-090-03L, LER-80-90-3L, NUDOCS 8101050509
Download: ML19340D887 (1)

LER-1980-090, /03L-0:on 801205,increased Accumulation of Liquid Wastes Found in Waste Tanks.Caused by Vibration Induced Cracking on Charging Pump Suction Header at Junction of Reactor Makeup Water Tank Supply.Pipe Spool Piece Replaced

Event date:
Report date:
3681980090R03 - NRC Website

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• • FPOM1 D.TE 80 EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h t o I:t i During Mode 1 oseration, an increased accumulation rate of liquid wastes ;

ic ia i i in the Waste Tanks was noted.

Investigation revealed a crack had I

ic i i l developed on the charging pump suction header at the junction of the icINIiReactor Makeup Water Tank supply.

The leak occurred on the 4" section off I:leItthe tee.

The three Hiah Pressure In_iection Dumos were available for i

! boration paths.

This occurrence is similar to LEP.'s 50-368/79-031 and i

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3 40 el 44 43 as es C AUSE DESCRmTION AP.D C ORGEC f tVE ACTIONS li t o r iThe cause of the failure is vibration induced crackine.

Abnormal vibration ii iil lappears to be related-to misoperation of the charcina pumo suction stabi-i l

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The affected oion soonl oiece was reolaced.

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