ML20099F538

Final Part 21/deficiency Rept Re Contaminated Hydraulic Fluid in Hydraulic Pipe Snubbers.Initially Reported on 821015.All Affected Hydraulic Pipe Snubbers Returned to Power Piping Co for Refurbishment

ML20099F538
Person / Time
Site:	Fermi
Issue date:	11/02/1984
From:	Jens W DETROIT EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-85-150-000 79, EF2-70029, PT21-85-150, PT21-85-150-000, NUDOCS 8411260479
Download: ML20099F538 (2)

Text

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1 Wayne H. Jene we n. o.ne Nucteer Op.<stois MI e'Am o ... me..,

imn w.out wvn 4ame November 2,1984 IOVI l o mis

• 4's EF2-70029 Mr. James G. Keppler Regional Administrator Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Dear Mr. Kepplora References (1) Fermi 2 NRC Docket No. 50-341 (2) Letter, D. A. Wells to J. G. Keppler November 15, 1982, EP2-60510 (3) Letter, D. A. Wolls to J. G. Koppler November 18, 1983, EP2-65299

Subject:

Final Report of 10CFR50.55(o) Item 79

" Hydraulic Pipe Snubbers" This in Dotroit Edison's final report of Item 79, "Ilydraulic Pipo Snubbers." Item 79 was originally reported as a potential deficiency on October 15, 1982, and was sub-noquently documented in references (2) and (3).

Doncription of Deficioney Detroit Edison was informed that contaminated hydraulic  :

fluid was found in hydraulic pipo anubborn supplied by Power

< Piping Company to Crystal Rivor 3. In responso, Detroit Edison inspected pipo anubbora nupplied by Power Piping Company for Formi 2 and analysod fluid from two of thoso pipo anubbors. The fluid namploa woro found to be contami-nated with morallic particles and the nnubbor fluid rosor-voirn woro partially corroded. Forty-Fivo llydraulic Snubborn woro dotormined to contain contaminated fluid.

Analynin of Gafnty Implicationn Contaminants in the hydraulic fluid could affect oporation of tho anubborn. Impropor anubbor oporation could renuit in strons valuon in safoty related pipon which excond dontgn critoria.

841 0 P"1260479 ^' c" og eM 1

NOV131984 s c. a y

o . ?.

Mr. James G. Neppler Novunbar 2, 1984 EF2-70029 '

Page 2 Corrective Action The following actions were taken to correct the deficiency and prevent recurrences  ;

O On November 1,1982, all af fected hydraulic pipe snub-bars were returned to Power Piping for refurbishing.

The last shipment was received back at Fermi 2 on March 5, 1983. Detroit Edison monitored the refurbish-ment process to assure acceptable screen samples were obtained.

O Hydraulic pipe snubbers were subsequently installed and ,

accepted by Detroit Edison. .

O Maintenance procedures have been prepared to assure that the hydraulic pipe snubbers are inspected and maintained operable in accordance with technical specifications and design requirements. l This is Detroit Edison's final report on this item. If you have questions concerning this matter, please contact Mr. Lewis P. Bregni (313) 586-5083.

Sincere cca Mr. P. M. Byron a p g*

Mr. R. C. DeYoung Mr. R. C. Knop i

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