05000265/LER-1979-020-03, /03L-0:on 790919,three Grinnell Hydraulic Snubbers Found to Have Empty Reservoirs.Caused by Excess Leakage Through Defective Gaskets.Snubbers Repaired by Installing New Oil Resevoirs and Seals

/03L-0:on 790919,three Grinnell Hydraulic Snubbers Found to Have Empty Reservoirs.Caused by Excess Leakage Through Defective Gaskets.Snubbers Repaired by Installing New Oil Resevoirs and Seals

ML19254F018
Person / Time
Site:	Quad Cities
Issue date:	10/15/1979
From:	Kan S COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19254F014	List: 05000265/LER-1979-020, Forwards LER 79-020/03L-0 05000265/LER-1979-020-03, /03L-0:on 790919,three Grinnell Hydraulic Snubbers Found to Have Empty Reservoirs.Caused by Excess Leakage Through Defective Gaskets.Snubbers Repaired by Installing New Oil Resevoirs and Seals
References
LER-79-020-03L-04, LER-79-20-3L-4, NUDOCS 7911050357
Download: ML19254F018 (1)

LER-1979-020, /03L-0:on 790919,three Grinnell Hydraulic Snubbers Found to Have Empty Reservoirs.Caused by Excess Leakage Through Defective Gaskets.Snubbers Repaired by Installing New Oil Resevoirs and Seals

Event date:
Report date:
2651979020R03 - NRC Website

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NRC FORM 366 U. S. P.UCLE AR Rt;GUL ATOR'. i;OMMISSION (7 77)

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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8 60 61 DOCKET NUMBER 68 63 E w ENT DATE 74 75 REPORT DATE B0 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l, An in plant insoect ion of accessible Grinnell Hydraulic Sni t,Oers..ms performed in I

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accordance with procedure QTS 180-1.

The snuobers on the RHR Shutdown Cooling l

g, g Supply, Main Steam Line Drains, and RCIC Steam Supply were found to have empty l

fluid reservoirs. Work.aquests were initiated to initiate repairs.

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o s!l i snubbers were in close proximity to the defective snubbers, and the Steam Drains t, l

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l SDC lines were isolated at the time.

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l All three snubbers had empty reservoirs due to excess leakace through defective l

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gaskets. The snubbers were recaired by installing new oil reservoirs and seals.

y The reservoi rs were filled and reinspected.

The snubbers were declared operable i

l within the Tech Spec 3.6.l.2. 72-hour limit.

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