ML20138G416

Application for Amends to Licenses DPR-42 & DPR-60, Supplementing 970129 Application Re Rev to Cooling Water Sys Emergency Intake Design Bases

ML20138G416
Person / Time
Site:	Prairie Island
Issue date:	04/29/1997
From:	Sorensen J NORTHERN STATES POWER CO.
To:
Shared Package
ML20138G410	List: ML20138G404 ML20138G416
References
NUDOCS 9705060291
Download: ML20138G416 (4)

Text

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i UNITED STATES NUCLEAR REGULATORY COMMISSION

, NORTHERN STATES POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT DOCKET Nos. 50-282 50-306 REQUEST FOR AMENDMENT TO OPERATING LICENSES DPR-42 & DPR-60 LICENSE AMENDMENT REQUEST DATED January 29,1997 Amendment of Coolina Water System Emeraency Intake Desian Bases Northern States Power Company, a Minnesota corporation, by this letter dated April 29,1997, with Attachment 1provides supplemental information in support of the subject license amendment request dated January 29,1997. Attachment 1 contains the power spectral density for time history curves 1 and 4.

This letter and its attachments contain no restricted or other defense information.

NORTHERN STATES POWER COMPANY By . e Joel#. Sorenser(

Plant Manager Prairie Island Nuclear Generating Plant On this D day of N#/ 1 / ih7 before me a notary public in and for said County, perso6 ally appeared, Joel P. Sorensen, Plant Manager, Prairia Island Nuclear Generating Plant, and being first duly sworn acknowledged that he is authorized to execute this document on behalf of Northern States Power Company, that he knows the contents thereof, and that to the best of his knowledge, information, and belief the statements made in it are true and that it is not interposed for delay. 3 L I4 A [

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DALE W. VINCENT

', NOTAAY PuSLsC.utsutt01A DAKOTACOU NTY

... .:: : . : $ :: $  : e 9705060291 970429 PDR ADOCK 05000282 P PDR

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i ATTACHMENT 1

, SUPPLEMENT 8

, to

, LICENSE AMENDMENT REQUEST DATED January 29,1997 Amendment of Coolina Water System Emeraency intake Desian Bases l

i I Time History Curves 1 and 4 ,

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1

March 18,1997 I 1

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The following curves show the power spectral density curves to be used in the dynamic finite element analysis. Time History #1 will be used for the horizontal input. Time  ;

1 ' History #4 will be scaled to 2/3 for the vertical input. l A l 4 i I'

l 10 , , '

f . .

W .

g 0.1 . . . .. j . . . . . .

8 n.

0.01 ~ -- -- -

1 ~ * ** ,

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0.001 -

0.1 1 10 100 i

Frequency (H2)  ;

1 PSD for Time History #1 l l

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10 ' '

, , . ~-

r g 0.1 - ~

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0.01 *' '

0.001 10 100 Frequency (Hz)

PSD for Time History #4 l

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