ML20138L088

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Requests Rev to Request for Authorization to Utilize ASME Boiler & Pressure Vessel Code Case N-521
ML20138L088
Person / Time
Site: Prairie Island  
Issue date: 02/14/1997
From: Sorensen J
NORTHERN STATES POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9702210015
Download: ML20138L088 (2)


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Northern States Power Company Prairie Island Nuclear Generating Plant 1717 Wakonade Dr. East Welch, Minnesota 55089 February 14,1997 10 CFR Part 50 Section 50.55(a)

U S Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Revision to the Request for Authorization to Utilize ASME Bo;ter & Pressure Vessel Code Case N-521 We have previously requested authorization to utilize ASME Boiler and Pressure Vessel Code Case N-521, " Alternative Rules for Deferral of Inspections of Nozzle-to-Vessel Welds, inside Radius Sections, and Nozzle-to-Safe End Welds of a Pressurized Water Reactor (PWR) Vessel,Section XI, Division 1", during the Prairie Island Third Ten Year Inservice inspection Interval for both Units 1 and 2. We had sought authorization for only the nozzle-to-vessel welds and the int.:de radius sections for the outlet nozzles.

We now request that the inside radius sections be excluded from the request for authorization. Thus, the authorization being sought is now only applicable to the nozzle-to-vessel welds for the reactor vessel outlet nozzles. For this reason, we are not responding to the Request for Additional Information, dated January 15,1997 because the questions are all related to the inside radius sections.

in this letter we have made no new Nuclear Regulatory Commission commitments.

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USNRC NORTHERN STATES POWER COMPANY

, February 14,1997 Page 2 Please contact Jack Leveille (612-388-1121, Ext. 4662) if you have any questions related to this letter.

Joel P Sorensen Plant Manager Prairie Island Nuclear Generating Plant c: Regional Administrator - Region Ill, NRC Senior Resident inspector, NRC NRR Project Manager, NRC J E Silberg i

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N-52185. DOC

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