ML20207B337

Advises That Util 870923 Response Re Reactor Containment Fan Coolers Satisfactory.Issue Closed

ML20207B337
Person / Time
Site:	Byron
Issue date:	07/22/1988
From:	Olshan L Office of Nuclear Reactor Regulation
To:	Bliss H COMMONWEALTH EDISON CO.
References
TAC-64876, NUDOCS 8808020305
Download: ML20207B337 (4)

Text

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July 22, 1988 a

Docket No. 50-455 DISTRIBUTION:

GUocket11ies-NRC & Local POR Mr. Henry E. Bliss PDIII-2 R/F Nuclear Licensing Manager LNorrholm Coranonwealth Edison Company CTinkler Post Office Box 767 L01shan Chicago, Illinois 60690 LLuther

SUBJECT:

REACTOR CONTAINMENT FAN COOLERS (RCFC) - BYRON UNIT 2 (TAC NO. 64876)

In our letter dated February 6,1987, we concluded that the Byron Unit 2 fan coolers were adequate to perform their design function. We requested that certain changes be made in the FSAR and that you demonstrate that the enhanced performance of the RCFC observed from testing does not affect the assumptions regarding RCFC performance contai' led in the ECCS containment back pressure analysis or acceptable Appendix X evaluation.

In your September 23, 1987 letter, you committed to update the FSAR as required.

You also provided information to show that the enhanced RCFC performance does not negate the assumptions used in the Appendix K analysis. We conclude that your response is satisfactory and the issue is considered closed.

Sincerely.

Leonard N. Olshan, Project Manager Project Directorate III 4 Division of Reactor Projects - III, IV, V and Special Projects i

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July 22, 1988 r

Docket No. 50-455 DISTRIBUTION:

Docket Files NRC & Local PDR Mr. Henry E. Bliss PDIII-2 R/F Nuclear Licensing Manager LNorrholm Comonwealth Edison Company CTinkler Post Office Box 767 L01shan Chicago, Illinois 60690 LLuther

SUBJECT:

REACTOR CONTAINMENT FAN COOLERS (RCFC) - BYRON UNIT 2 (TACNO.64876)

In our letter dated February 6,1987, we concluded that the Byron Unit 2 fan coolers were adequate to perfonn their design function. We requested that certain changes be made in the FSAR and that you demonstrate that the enhanced performance of the RCFC observed from testing does not affect the assumptions regarding RCFC performance contained in the ECCS containment back pressure analysis or acceptable Appendix X evaluation.

In your September 23, 1987 letter, you committed to update the FSAR as required.

You also provided infomation to show that the enhanced RCFC perfonnance does not negate the assumptions used in the Appendix K analysis. We conclude that your response is satisfactory and the issue is considered closed.

Sincerely, Leonard N. 01shan, Project Manager Project Directorate III-2 Division of Reactor Projects - III, IV, V and Special Projects

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July 22, 1988 i

Docket No. 50-455 Mr. Henry E. Bliss Nuclear Licensing Manager Comonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690 Daar Mr. Bliss:

SUBJECT:

REACTOR CONTAINMENT FAN COOLERS (RCFC) - BYRON UNIT 2 (TAC N0. 64876)

In our letter dated February 6,1987, we concluded that the Byron Unit 2 fan coolers were adequcte to perform their design function. We requested that certain changes be made in the FSAR and that you demonstrate that the enhanced performance of the RCFC observed from testing does not affect the assumptions regarding RCFC performance contained in the ECCS containment back pressure analysis or acceptable Appendix K evaluation.

In your September 23, :.987 lettar, you comitted to update the FSAR as required.

You also provided infonnation to show that the enhanced RCFC performance does not negate the assumptions used in the Appendix K analysis. We conclude that your response is satisfactory and the issue is considered closed.

Sincerely,

%?M b Leonard N. Olshan, Project Manager Project Directorate !!!-2 Division of Reactor Projects - III.

IV, Y and Special Projects 2

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Mr. Henry E. Bliss Byron Station Connonwealth Edison Company Units 1 and 2 i

CC Mr. William Kortier Regional Administrator, Region III Atomic Power Distribution U. S. Nuclear Regulatory Westingbouse Electric Corporation Comission Post Office Box 355 799 Roosevelt Road, Bldg. f4 Pittsburgh, Pennsylvania 15230 Glen Ellyn, Illinois 60137 Michael Miller, Esq.

Mr. Michael C. Parker, Chief Sidley and Austin Division of Engineering One First National Plaza Illinois Department of Chicago, Illinois 60603 Nuclear Safety 1035 Outer Park Drive Springfield, Illinois, 62704 Mrs. Phillip B. Johnson 1907 Stratford Lano Joseph Gallo, Esq.

Rockford, Illinois 61107 Hopkins and Sutter Suite 1250 Ms. Lorraine Creek 1050 Connecticut Avenue, N.W.

Rt. 1, Box 182 Washington, D. C.

20036 Mantenc, Illinois 60950 Douglass Cassel, Esq.

Dr. Bruce von Zellen 109 N. Dearborn Street Department of Biological Sciences Suite 1300 Northern Illinois University Chicago, Illinois 60602 DeKalb, Illinois 61107 Ms. Pat Morrison Mr. Edward R. Crass 5568 Thunderidge Drive Nuclear Safeguards & Licensing Rockford, Illinois 61107 Sargent & Lundy Engineers 55 East honroe Street Attorney General Chicago, Illinois 60603 500 South 2nd Street U. S. Nuclear Regulatory Connission Byron / Resident Inspectors Offices Chainnan, Ogle County Board 4448 North Gennan Church Road Post Office Box 357 Byron, Illinois 61010 Oregon. Illinois 61061 ESI Review Coordinator Environmental Protection Agency Region V i

230 S. Dearborn Street Chicago, Illinois 60604 l

Cocinonwealth Edison Company Byron Station Manager 4450 North Gennan Church Road Byren, Illinois 61010 l