ML19254F018

LER 79-020/03L-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

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: ML19254F013 ML19254F018
References
LER-79-020-03L-04, LER-79-20-3L-4, NUDOCS 7911050357
Download: ML19254F018 (1)

Text

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

LICENSEE EVENT REPORT CONTROL BLOCK: l i

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lh (PLEASE PRINT OR TYPE ALL REQUInED INFORMATIONI 7

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REPORT DATE B0 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l, An in plant insoect ion of accessible Grinnell Hydraulic Sni t,Oers ..ms performed in I g ,3  ; 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 o s!l fluid reservoirs. Work .aquests were initiated to initiate repairs. Operable j .

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

[o 7 l SDC lines were isolated at the time. l 0 8 I  !

7 9 9 60 SYSTEM CAUSE CAUSE COYP. VALVE CODE CCOE SUBCODE COVPONENT CODE SUSCC CE SUSCCCE 7

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_ SE QUE NTI AL OCCUAAENCE RECORT REVISION LER RO EVENTYiAR REPORT NO, CCCE TYPE NO.

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35 36 31 40 4' 42 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i O l All three snubbers had empty reservoirs due to excess leakace through defective l

, , 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

, 3 l within the Tech Spec 3.6.l.2. 72-hour limit. I i 4 1 1 7 8 9 80 STA S %FOWER / OTHER STATUS DISCO RY OlSCOVERY DESCRIPTION 1

s lE l@ l0 l 517 l@l NA l l8l@l Routine Test / Inspection l ACTIVITY CO TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION CF RELE ASE 6 NA l l NA l 7

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@ l Z l@l to 11 44 45 80 PERSONNEL EXPOSLRES NUV8EA C E SCR'PTIC N i dI010l0l@lTY8E l @l NA l PERSCNNE L INJURIES NusaER oESCR,fiO.@

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'SSLEf@DE CR'PTfCN NA l ll llllltillIII 8 3 to 68 69 dJ 1 N AVE C ' 'nEDARER PHONE. 309-654-2241 ext. 174 2

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