ML20083E895

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Repts Steam Generator Tube Plugging Following Recent Outages.Info Will Be Expanded Upon in Inservice Insp Rept & Updated FSAR Will Be Modified
ML20083E895
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 12/19/1983
From: Musolf D
NORTHERN STATES POWER CO.
To:
Office of Nuclear Reactor Regulation
References
TAC-12657, NUDOCS 8312300031
Download: ML20083E895 (1)


Text

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Northem States Power Company 414 Nicollet rAall Minneapois. Minnesota 55401 Teiepnone 1612) 330-5500 December 19, 1983 Director Of fice of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Steam Generator Tube Plunging Following recent outages on both units, per Technical Specification 4.12.E.1, the following steam generator tube plugging information is being reported.

During the September 1983 outage on Unit 2, twenty tubes were plugged.

Five tubes were plugged in steam generator 21 and fif teen in steam generator

22. The percentage of tubes plugged is 0.8% and 2.4% in steam generators 21 and 22, respectively.

During the current outage on Unit 1, eighteen tubes were plugged. Ten tubes were plugged in steam generator 11 and eight tabes were plugged in stean generator 12. The percentage of tubes plugged is 1.2% and 0.3% in steam generators 11 and 12, respectively.

l This information will be expanded upon in the Inservice Inspection Report for each unit. Also Tables 4.3-13 and 14 of the Prairie Island Updated Safety Analysis Report will be updated in the next revision.

If you have questions concerning this information please call.

1 W

I D M Musolf l Manager - Nuclear Su crt Services DMM/ dab 1 gol c: MRR Project Manager, NRC '

Regional Admin-III, NRC 10 Resident Inspector, NRC G Charnoff 1

1 8312300031 831219 PDR ADOCK 05000282 P pop l

l