ML20058K697

Notifies That Surveillance Test for Exercising Unit 2 Containment Vacuum Breaker Isolation Valve Showed to Be Inoperable & Would Not Close.Maint Work Initiated & Valve Was Returned to Operable Status

ML20058K697
Person / Time
Site:	Monticello
Issue date:	05/01/1975
From:	Tierney F NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 9102130501
Download: ML20058K697 (1)

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PRAIRIE ISLAND tiUCLEAR CCl*ERATING PLAttr oi i

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i.3 Mr. Jenoa-0. Keppler Direct 4r Region II.I. office.of toepection and Enforcassent US Noelear Regulatory Comandesinar

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7.99'R60sevelt Road CIen Ellyn, IL 60137 s

ATIN: Mr. N C Cheules REPORP OF AhWORNAL CCCURREWCE NO. 75-12 At 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> on April 29, 1975, the surveillance test fer exercising Unit. 2 contatament vacuum Breaker. Isolation valve CW31628r showed the valve to be-inoperable in that it would-not close.

Maintenance vark was initiated and the valve vap returned to an operable status t,y 1130 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.29965e-4 months <br /> on April 29th.

W& ',Y; :^7 F P Tierney, Jr...

Plant Manager Prairie Island Wcle.ar Plant I

FPTtdn cet Directorate of Licensing.

ATIN: 3 C Buckley L 0 Mayer C H Neils r

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