ML20004B167

LER 81-027/03L-0:on 810424,during Maint Outage,Hydraulic Snubbers SS-5-A,S5-A1,S5-D3 & 1-GG-5-27 Found to Have Empty Reservoirs.Caused by Deterioration of Snubber Piston Seals of Grinnell Models AN-1372B & AH-1373A.Snubbers Rebuilt

ML20004B167
Person / Time
Site:	Peach Bottom
Issue date:	05/22/1981
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-81-027-03L, LER-81-27-3L, NUDOCS 8105270326
Download: ML20004B167 (1)

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Mr. Soycs H. Grice, Dirsctor N2. 2-01-027-03 L Of fics of Inspection f, Enforcement, Rrgion I U.S. Nuclear Regulatory Comission 631 Park Avenue King of Prussia, PA 19406 Dear K . Griers This L.E.R. concerns four hydraulic snubbers foun'd to have errpty flu.d reservoirs. Governing Tech Spec is 3.11.D.4 u.3 NuCLEAn aEcuLATonY CoM4Als3JeN

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g .7 , 21 1 1-GG-S-27 were found to have errpty reservoirs. The snubbers were then 1 FTT71 I removed and functionally tested. The bleed rate and lockup velocities I r

ITTTI i of eil four snubbers were found to be satisfactory. therefore f I

o e I consequences are minimal. Previous similar occurrences: 78-43/3L. l loirl1 3-77-54/IT. 3-77-2/IT. 3-77 64/IT. Governing Tech. Spec. i s 3.11.0.4.  !

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liIall The cause was deterioration c,f the snubber piston seals of the Grinnell l gl Model s AN-13728 and AH-1373A. Tre snubbers were rebuilt, satisfactorily 9 mI tested. and returned to service on May 18. 1981.  ;

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