ML19337A126

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Responds to IE Bulletin 79-03A.Util Determined in All Cases Pipe Wall Thickness Is Based on Use of 85% of Code Allowable
ML19337A126
Person / Time
Site: Maine Yankee
Issue date: 07/30/1980
From: Moody D
Maine Yankee
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-79-03A, IEB-79-3A, WMY-80-119, NUDOCS 8009080528
Download: ML19337A126 (1)


Text

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. :_G h B.4.1.1 July 30, 1980 MfY 80-119 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention:

Mr. Boyce H. Grier

References:

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

(b) MYAPC letter to USNRC (WMY 79-22), dated March 28, 1979 (c)

IE Bulletin No.79-03A, dated April 4, 1980 (d) YAEC letter to USNRC (WYR 80-59), dated May 29, 1980

Dear Sir:

Subject:

Response to I6E Bulletin No.79-03A, RE: Longitudinal Weld Defects Our letter, Reference (b) informed you that seam welded A312 pipe was used at Maine Yankee in accordance with the requireuents of the ANSI B31.1 Power Piping Code. Maine Yankee has determined that in all cases the pipe wall thickness is based on the use of 85 percent of the code allowable.

Since our review addresses the action required in Item 1 of your letter, Reference (c), no further action will be taken or this issue.

If you have any questions, please contact us.

Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY

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E. Moody Manager of Operations RHG/jgh 8009080 g g