ML20055C392

Approves Util 900214 Request for Use of B&W Steam Generator Plugs W/Alloy 690 as Alternative to Alloy 600.Alternate Matl Is nickel-base Alloy (ASME Designation SB-166)

ML20055C392
Person / Time
Site:	Byron, Braidwood, 05000000
Issue date:	02/26/1990
From:	Shemanski P Office of Nuclear Reactor Regulation
To:	Kovach T COMMONWEALTH EDISON CO.
References
NUDOCS 9003080299
Download: ML20055C392 (4)

Text

f February 26, 1990-1 Docket Nos. 50-454, 50-455, 50-456 and 50-457 l

Thomas J. Kovach Nuclear Licensing Manager j

Commonwealth Edison Company-Suite 300 OPUS West III.

1400 OPUS Place Downers Grove, Illinois 60515

SUBJECT:

REQUEST FOR PROPOSED ALTERNATIVE TO REQUIREMENTS OF ASME SECTION III.

FOR BYRON STATION UNITS 1 AND 2 AND BRAIDWOOD STATION UNITS 1 AND 2 By letter dated February 14, 1990, Commonwealth Edison Company requested approval for the use of B&W steam generator plugs manufactured with an i

alternate material. The alternate material is a nickel base alloy, ASME designationSB-166(Alloy 690).

i The Materials and Chemical Engineering Branch, Division of Engineering Technology, has reviewed the request and supporting information and concludes that the use of Alloy 690 as a proposed alternative to the use_of Alloy 600, in accordance with the requirements of the ASME Boiler and Pressure Vessel r

Code, will provide an acceptable level of quality and safet and that its use may be authorized under the provisions of 10 CFR 50.55a(a)(y).

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3 Sincerely,

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@ C. fhd Paul C. Shemanski, Project Manager Project Directorate 111-2 Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation I

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l February 26, 1990 I

Docket Nos. 50-454, 50-455, 50-456 and 50-457 Thomas J. Kovach Nuclear Licensing Manager Commonwealth Edison Company-Suite 300 OPUS West III r

1400 OPUS Place Downers Grove, Illinois 60515

SUBJECT:

REQUEST FOR PROPOSED ALTERNATIVE TO REQUIREMENTS OF ASME SECTION III I

FOR BYRON STATION UNITS 1 AND 2 AND BRAIDWOOD STATION UNITS 1 AND 2 i

By letter dated February 14, 1990, Commonwealth Edison company requested approval for the use of B&W steam generator plugs manufactured with an alternate material. The alternate material is a nickel base alloy, ASME designationSB-166(Alloy 690).

The Materials and Chemical Engineering Branch, Division of~ Engineering Technology, has reviewed the request and supporting information and concludes that the use of Alloy 690 as a proposed alternative to the use of Alloy 600, in accordance with the requirements of the ASME Boiler and Pressure Vessel Code, will provide an acceptable level of quality and safet and that its use l

maybeauthorizedundertheprovisionsof10CFR50.55a(a)(y).

3 Sincerely, O c.r h Paul C. Shemanski, Project Manager Project Directorate 111-2 Division of Reactor Projects - !!!,

IV, Y and Special Projects Office of Nuclear Reactor Regulation I

cc:

See next page

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Mr. Thomas J. Kovech Byron /Braidwood Power Station Comonwealth Edison Company Units 1 and 2 CC:

Mr. Jack Tain Dr. Bruce von Zellen Atomic Power Distribution Department of Biological Sciences 4

Westinghouse Electric Corporation Northern Illinois University Post Office Box 355 DeKalb, Illinois 61107 i

Pittsburgh, Pennsylvania 15230 U. S. Nuclear Regulatory Commission Joseph Gallo, Esq.

Byron / Resident Ins)ectors Office Hopkins and Sutter 4448 North German Church Road 888 16th Street, N.W.

Byron, Illinois 61010 Suite 700 Washington, D.C. 20006 M,s. Lorraine Creek Rt. 1. Box 182 i

Regional Administrator Manteno, Illinois 60950 1

U. S. NRC, Region III 799 Roosevelt Road, B1dg. f4 Mrs. Phillip B. Johnson Glen Ellyn, Illinois 60137 1907 Stratford Lane Rockford, Illinois 61107 Ms. Bridget Little Rotem i

Appleseed Coordinator Douglass Cassel Esq.

117 North Linden Street 109 H. Dearborn Street Essex, Illinois 60935 Suite 1300 Mr. Edward R. Crass Nuclear Safeguards and Licensing Ms. Pat Morrison Division 913 N Main Street #707 Sargent & Lundy Engineers Rockford, Illinois 61103-7058 55 East Monroe Street Chicago Illinois 60603 David C. Thomas Esq.

77 S. Wacker Drhie U. S. Nuclear Regulatory Comission Chicago, Illinois 60601 f

Resident Inspectors Office RRfl Box 79 i

Braceville, Illinois 60407 Mr. Thomas W. Ortciger, ices Director Illinois Emergency Serv and Disaster Agency 110 East Adams Street Springfield, Illinois 62706 i

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Hr. Thomas J. Kovach 2-Byron /Braidwood Comonwealth Edison Company cc:

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i Illinois Department of Nuclear Safety i

Office of Nuclear Facility Safety i

1035 Outer Park Drive l

Springfield, Illinois 62704 Michael Miller, Esq.

'l Sidley and Austin One First National Plaza i

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Chicago, Illinois 60690 i,

George L. Edgar Newman & Holtzinger, P.C.

l 1615 L Street, N.W.

Washington, D.C. 20036 q

Comonwealth Edison Company Byron Station Manager i

4450 North German Church Road 1

l Byron, Illinois 61010 j

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