View source for B11155, Forwards Response to Matls Engineering Branch Draft SER Open Item Mteb 250.11 Re Ultrasonic Exam of Welds Fabricated from Cast Stainless Steel & Westinghouse Procedure ISI-206, Manual Ultrasonic Exam of Welds

{{Adams
| number = ML20084N801
| issue date = 05/03/1984
| title = Forwards Response to Matls Engineering Branch Draft SER Open Item Mteb 250.11 Re Ultrasonic Exam of Welds Fabricated from Cast Stainless Steel & Westinghouse Procedure ISI-206, Manual Ultrasonic Exam of Welds
| author name = Counsil W, Sears C
| author affiliation = NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
| addressee name = Youngblood B
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| docket = 05000423
| license number = 
| contact person = 
| document report number = B11155, NUDOCS 8405170213
| package number = ML20084N803
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 3
}}

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HARTFORD. CONNECTICUT 06141-0270 L    g   g                                                              (203) 666-6911 May 3,1984 Docket No. 50-423 B11155 Director of Nuclear Reactor Regulation Mr. B. 3. Youngblood, Chief Licensing Branch No.1 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555

==Reference:==
(1)  B. 3. Youngblood letter to W. G. Counsil, Draft SER, dated December 20,1983.
(2)  B. 3. Youngblood letter to W. G. Counsil, Request for Additional Information, dated January 16,1984.
Gentlemen:
Millstone Nuclear Power Station, Unit No. 3 Response to Materials Engineering Branch DSER Open Item Attached is Northeast Nuclear Energy Company's (NNECO) response to the Materials Engineering Branch, Inservice Inspection Section open item MTEB 250.11 concerning ultrasonic examination of welds fabricated from cast stainless steel. We expect the response will resolve the Staff's concerns regarding this open item.
If there are any questions, please contact our licensing representative.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY et. al.
BY NORTHEAST NUCLEAR ENERGY COMPANY Their Agent UU .b . Cearr W. G. Counsil Senior Vice President By: C. F. Sears 0\
Vice President Nuclear and                     h0 Environmental Engineering                     \\ \
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                                           ) ss. Berlin COUNTY OF HARTFORD             )
Then personally appeared before me C. F. Sears, who being duly sworn, did state that he is Vice President of Northeast Nuclear Energy Company, an Applicant herein, that he is authorized to execute and file the foregoing information in the name and on behalf of the Applicants herein and that the statements contained in said information are true and correct to the best of his knowledge and belief.
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                           . Millstone Nuclear 'ower Station, Unit No. 3 Open item Materials Engineering Branch Inservice Inspection Section                         .
MTEB 250.11
        . The FSAR shows that reactor coolant piping, fittings, branch nozzles, and flanges are fabricated from cast stainless steel.         Discuss the ultrasonic examination of welds fabricated from this material and the method of procedure qualification used to assure that potential service-induced degradation will be detected.

===Response===
Enclosed for your information, is a copy of the Westinghouse Procedure " Manual Ultrasonic Examination of Welds" (151-206 Rev. 0). This procedure will be used to examine the main coolant piping welds (material-cast stainless steel).
The NRC witnessed an on-site demonstration of inspectability of cast piping, using the enclosed procedure, that was performed by Westinghouse at the Callaway and Comanche Peak sites. Northeast Nuclear Energy Company has not received any information from the NRC Staff pertaining to the above demonstrations. Westinghouse is prepared to give a demonstration of their UT inspection technique on the reactor coolant piping at the Millstone site, if requested by the NRC Staff.
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