ML20206H464

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Submits Clarification Re Util Inservice Insp Commitment for Critical Main Steam Pipe Welds,Per 870312 Request & SEP Topic III-5.A, Effect of Pipe Breaks.... All Eight Piping Welds Will Be Inspected During 1987 Refueling Outage
ML20206H464
Person / Time
Site: Yankee Rowe
Issue date: 04/10/1987
From: Papanic G
YANKEE ATOMIC ELECTRIC CO.
To: Mckenna E
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
TASK-03-05.A, TASK-3-5.A, TASK-RR FYR-87-027, FYR-87-27, NUDOCS 8704150362
Download: ML20206H464 (1)


Text

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April 10, 1987 FYR 87-927 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Attention:

Ms. Eileen McKenna, Project Manager PWR Project Directorate No. 1 Division of PWR Licensing - A

References:

(a) License No. DPR-3 (Docket No. 50-29)

(b) Letter, YAEC to USNRC, "SEP Topic III-5.A",

dated October 1, 1986 (FYR 86-092)

Subject:

SEP Topic III-5.A, Effect of Pipe Breaks Inside Containment

Dear Ms. McKenna:

We have previously submitted to you via Reference (b) our analysis of a postulated rupture of a main steam (MS) line near a steam generator. As an acceptable resolution of this iscue, Yankee proposed to inspect certain critical MS pipe welds as part of our 1987 In-Service Inspection (ISI) program. The specific welds are identified in Reference (b), Figure 1.

During our meeting on Thursday, March 12, 1987, a request was made to clarify our ISI commitment regarding these welds.

All eight (8) MS piping welds shown on Figure 1 in Reference (b) will be inspected during the 1987 refueling outage in conformance with ASME Section XI criteria. They will be included in our 10-year ISI program for Class 1 components and inspected periodically in accordance with the requirements of that program for the remaining life of the plant.

Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY A

8704150362 870410 PDR ADOCK 05000029 G. Pap ic, Jr.

G PDR Senior Project Engineer Licensing GP/sj cc: USNRC Region I USNRC Resident Inspector, YNPS j

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