ML20056B869

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Forwards Seven LERs Describing Containment Isolation Valves Which Required Corrective Maint Following Type C Leakage Tests.Detailed Deficiency Will Be Included in Reactor Containment Bldg ILRT Rept
ML20056B869
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 11/18/1977
From: Mayer L
NORTHERN STATES POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20056B870 List:
References
NUDOCS 9102130548
Download: ML20056B869 (1)


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NSD E S T O.l i D U C! E r fi n c g ,q NORTHEAN STATES POWER COMPANY u s N N E A PO Lis. MIN N E S OTA 55401

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November 18, 1977 , ,4\

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Mr J G Keppler, Director, Region III 4,k .

Office of Inspection & Enforcement 47f.

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U S Nuclear Regulatory Commission  ;-c y 799 Roorevelt Road .. r j -j

Glen Ellyn, IL 60137

Dear Mr Keppler:

MONTICELLO KUCLEAR GENERATING PIANT Docket Ro. 50-263 License No. DPR-22 Failure of Primary Containment Isclation Valves to Pass Local Leak Rate Tests Attached are seven Licensee Event Reports describinr, containment isolation valves which required corrective maintenance following Type C leakage tests.

I A detailed discussion of each deficiency will be included in the " Reactor '

Containment Building Integrated Leak Rate Test Report" to be submitted at a later date.

Yours very truly, W Fo 51 L C Mayer, PE Manager of Nuclear Support Services LOM/ak cc: Director, IE, USNRC (40)

Director, MIPC, US BC (3) l i

Charnoff 1-iPCA Attn: J W Ferman ,

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.7 e , .i' 9102130548 77111B . , ; ? 2' CF ADOCK 05000263 s.F q

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