05000259/LER-1981-040-03, /03L-0:on 810625,during Testing,Grinnell Snubber SS7 Was Found Low on Fluid.Caused by Leak at Threaded Connection Between Fluid Reservoir & Snubber.Grinnell Model F-16200,Size 2.5,Type HSSA-10 Snubber (Sn 10734) Rebuilt

/03L-0:on 810625,during Testing,Grinnell Snubber SS7 Was Found Low on Fluid.Caused by Leak at Threaded Connection Between Fluid Reservoir & Snubber.Grinnell Model F-16200,Size 2.5,Type HSSA-10 Snubber (Sn 10734) Rebuilt

ML20009F881
Person / Time
Site:	Browns Ferry
Issue date:	07/24/1981
From:	Holder G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F878	List: 05000259/LER-1981-040, Forwards LER 81-040/03L-0 05000259/LER-1981-040-03, /03L-0:on 810625,during Testing,Grinnell Snubber SS7 Was Found Low on Fluid.Caused by Leak at Threaded Connection Between Fluid Reservoir & Snubber.Grinnell Model F-16200,Size 2.5,Type HSSA-10 Snubber (Sn 10734) Rebuilt
References
LER-81-040-03L, LER-81-40-3L, NUDOCS 8108030134
Download: ML20009F881 (2)

LER-1981-040, /03L-0:on 810625,during Testing,Grinnell Snubber SS7 Was Found Low on Fluid.Caused by Leak at Threaded Connection Between Fluid Reservoir & Snubber.Grinnell Model F-16200,Size 2.5,Type HSSA-10 Snubber (Sn 10734) Rebuilt

Event date:
Report date:
2591981040R03 - NRC Website

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• Date due NRC: 7/25/81 Reported Under Technical Specification 6.7.2.B.2 I

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Date of Occurrence 6/25/S1

_ Time of Occurrence l

Identification and Des,cription of Occurrence:

H While performing le(I-59, snubber No. SS7 was found inoperable.

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ll Conditions Prior to Occurrence:

tl-Unit 1 in refueling outage.

Unit 2 at 100%.

l Unit 3 at 97%.

Action specified in.the' Technical Specification Surveillance Requirements met due to inoperable equipment.

Describe.

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t Apparent Cause of Occurrence:

A ' leak at the threaded connection between the fluid reservcir and the snubber, probably caused by improper thread sealant.

Analysis of Occurrence:

There was no danger to the health or safety of the public, no release of and no resulting significant activity, no damage to the plant or equipment, chain of events.

Corrective Action

Snubber will be rebuilt and a suitable titread connection sealant used.

Inspection intervals for snubbers will be changed per SI 4.6.H because this snubber was found inoperable.

Failure Data:

None Retention:

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