ML19276F892

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Forwards S&W Rept Describing Comparison of Pstress/Shock 1 & NUPIPE-SW.Reanalysis of nonsafety-related Piping Has Been Completed & No Mod Required.Mods to Hangers H-51 & H-53 Are Not Complete
ML19276F892
Person / Time
Site: Maine Yankee
Issue date: 04/19/1979
From: Johnson W
Maine Yankee
To: Reid R
Office of Nuclear Reactor Regulation
Shared Package
ML19276F893 List:
References
WMY-79-34, NUDOCS 7904240432
Download: ML19276F892 (1)


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$ [~2 "[Y ENGINEERING OFFICE WESTBOR O, M ASS ACHUS ETTS 01581 617-366-9011 w yg_p h B.3.2.1 WMY 79-34 April 19, 1979 United States Nuclear Regulatory Commission Washington, D. C.

20555 IHIS DOCUMENT CONTAINS Attention: Office of Nuclear Reactor Regulation Mr. Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors

References:

(a) License No. DPR-36 (Docket No. 50-309)

(b) MYAPC letter to USNRC dated April 12, 1979 (WMY 79-31)

Dear Sir:

Subject:

Maine Yankee Piping Seismic Re-analysis This letter submits a copy of a report prepared by Stone and Webster Engineering Corporation describing the comparison of PSTRESS/ SHOCK 1 and NUPIPE-SW which was conducted by them.

The modifications to hangers H-51 and H-53 described in reference (b) have been completed.

The re-analysis of non-safety related piping that was originally analyzed using PSIRESS/ SHOCK 2, discussed in reference (b), has been completed. No modifications are required.

We trust this information will be of service to you; however, should you have any questions, please contact us.

Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY

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