ML100680404

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Request for Additional Information on Measurement Uncertainty Recapture Power Uprate License Amendment
ML100680404
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 03/09/2010
From:
Plant Licensing Branch III
To:
beltz T, NRR/DORL/LPL3-1, 301-415-3049
Shared Package
ML100680403 List:
References
TAC ME3015, TAC ME3016
Download: ML100680404 (1)


Text

ADAMS Accession No.: ML100680404 REQUESTS FOR ADDITIONAL INFORMATION Prairie Island Nuclear Generating Plant, Units 1 and 2 License Amendment Request (LAR) dated December 28, 2009 for Measurement Uncertainty Recapture Power Uprate Docket Nos. 50-282 and 50-306 TAC Nos. ME3015 and ME3016 Office of Nuclear Reactor Regulation Division of Engineering Instrumentation and Controls Branch EICB RAI 1 On Pages 5 and 6 (Item I.C) in Enclosure 2 of the LAR, the licensee proposes to operate at uprated power in both Alert mode and Fail mode before the next scheduled daily Power Range Nuclear Instrumentation calibration.

Please list all conditions (e.g., one main steam pressure input fails) in these two modes separately, and provide additional explanation if necessary.

EICB RAI 2 On Pages 17 and 18 (Item I.G) in Enclosure 2 of the LAR, the licensee proposes to operate at uprated power in Alert mode with indefinite allowed outage time (AOT), and Failed mode with a 7-day AOT.

Please provide the data of know transmitter drift and nozzle fouling during the AOT to justify these proposed AOTs.