ML20058K703

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Advises That Oil Addition Fittings Should Be Carefully Inspected During Future Snubber Surveillance & Renewed as Appropriate
ML20058K703
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 02/11/1974
From: Skovholt D
US ATOMIC ENERGY COMMISSION (AEC)
To: Mayer L
NORTHERN STATES POWER CO.
References
NUDOCS 9102130511
Download: ML20058K703 (2)


Text

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.ocket No. 50-263 j Horthern States Power Cogany

  1. ITN: R. L. O. Payer, Direct of Nuclear Support Services 414 Nicollet Mall Minneapolis, Minnesota 55401 Gentlemn:

R3 Bulletins 73-3 and 74-3 and a letter from Danald J. Skovholt, Assistant Director for Ocerating Reactors, sunmriced backy'ound infon::ation on defective hydraulic shock suppressors (snubbers) and described required inspection programs. It has come to our attention that oil addition fittings (e.g., Alemite fitting) used on snubbers contain seal raterials t;hich my deteriorate in a high terperature envircrent and cause the loss of hydraulic fluid. Replacerent seals for these fittings rny not normally be included in standard repair kits.

Oil addition fittings should be care 11tlly inspected during future snubber surveillance e_d renewed as appropriate.

Slncerely, J/f n f.3,, s G >.'L's 7'

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v' "Danald J #3kovholt Assistd$t Director for Operating Reactors Directorate of Licensing cc:

See ne:d page i

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J 9102130511 740211 CF ADOCK 05000263 CF

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. arthern S tates pswer c.r pany 2-February 11, 1974 j

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Donald E. Nelson, Esqulre VP and CC 1

Sarthern States Power Company 414 Nicollet Avenue

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Minneapolis, Minnesota 55401 Gerald Charnoff l

Shaw, Pitt=an, Potts, Trowbridge & Madden 910 - 17th Street, N. W.

j L'ashington, D. C.

20006 3

noward J. Vogel, Esquire Knittle & Vogel 814 Flour Exchange Building i

Minneapolis, Minnesota 55415 i

j Steve Gadler, P. E.

2120 Carter Avenue St. Paul, Minnesota 55108 i

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Mr. Donald L. Ficker City _ of St. Paul 647 City Hall St. Paul, :Ennesota 55102 j

I Ken Dzugan

linnesota Pollution Control Agency 717 Delawara Street, S. E.
'inneapolis, Minnesota 55440 Warren R. Lawson, M. D.

Secretary 5 Executive Officer i

State Departcent of Health 717 Delavare Street, S. E.

Einneapolis, Minnesota 55440 Environnental Library of Minnesota 1222 S. I. 4th Street

'clinneapolis, Minnesota 55414 3

.irthony Z. Roisman, Esquire Le rlin, Ro?.st:an and Kessler 1712 22 Street, N. W.

7ashington, D. C.

20036 I

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