ML20126K928

Advises That Util 850416,0624 & 0703 Submittals Re Proposed Elimination of Arbitrary Intermediate Pipe Breaks in High Energy Piping Sys Acceptable.Safety Evaluation Will Be Contained in Sser 5

ML20126K928
Person / Time
Site:	Clinton
Issue date:	07/12/1985
From:	Butler W Office of Nuclear Reactor Regulation
To:	Spangenberg F ILLINOIS POWER CO.
References
NUDOCS 8507300517
Download: ML20126K928 (4)

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e Docket No. 50-461 Mr. FradEA. Spangenberg Director, of Nuclear Licensing & '

Configuration Management " '

P.O. Box 306 , ,

x Mail Code V920 Clinton, Illinois 61727

SUBJECT:

CLINTON POWER STATION, UI.IT 1-ELIHlhAT10N OF ARBITkARY II.TEEEDif,TE PIPE;[REAKS 3

.- g The staff has reviewed your April 46, 1985, submittal and the ss, pplemental information provided in letters dated June _2e and July 3,1985, related to alternative pipe break criteria that would efirinate arbitrary intermediate pipe breaks in high energy piping systens at'Clinton Power Station, Unit 1.

Based -on our review of your justtfications contained in Appendices C through G of ycur April 16, 1985, submittal, we have concluded that your proposed

- elimination of arbitrary intermediate pipe breaks identified in Appendices A dnd B of that same submittal is acceptable. The staff's detailed ssafety ,

evaluation will be contained in Supplement 5 to the SER. T For those piping systens or portions thereof, which are not identilied in your submittal, the staff rcquires that the existing guidelines in STPii4EE.3-1 of the SRP (NUREG-0800) Revision 1 be not. However, should otfer piping Tipes sub .

sequently qualify, the proposed elimination of the arbitrary intermeoiate break criteria may bt implemented provided those additional piping lines are appropri

,rately identified to the staff. .

- In your Npril 16, 1985, subnkttal,youstatedthatsincethedesignandcon-struction of pipe whip restraints associated with arbitrary intermediate' pipe breaks is nearly complete, you do not anticipate removing any of the installed restraints at this time. The staff finds this acceptable; however, to h @l ,

possible confusion relative to future inspections of these unshimed restraints, all applicable is not required toc'.rawings be ,shimed.should be changed to clearly show that the re'strain 3.~ t n.

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JUL 121985 1

Since this issue is being treated as a justified deviation from Section 3.6.2 of the SRP, Section 3.6 should be revised in the next amendment to the FSAR to reflect these changes to the postulated pipe break criteria.

If you have any questions regarding this issue, please contact the fiRC Licensing l' Project Manager for your application.

Sincerely, I i

Origir. t sdzd L/

llalter R. Butler, Chief Licensing Branch flo. 2 Division of Licensing cc: See next page DISTRIBUTI0ft

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-2 Sirce this issue is being treated as a austified deviation from Section 3.6.2 of the SRP, Section 3.6 should be revised in the next draendment to the FSAR to reflect these changes to the postulcted pipe break criteria.

If you' have any questions regarding this issue, please contact the t;RC Licensing Project Isanager for your application.

Sincerely, llalter R. Butler, Chief Licensing Branch No. 2 Utvision of Licensing

.cc: .Sce next page

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• l.r. Frank A. Spangenberg Clinton Power Station Illinois Power Company Unit 1 ,

cc: Mr. Allen Samuelson, Esquire Jean Foy, Esquire Assistant Attorney General 511 U. Nevada Envircr.r.trtel Control Division Urbara, Illinois 61601 Scuthern Region 500 South Second Street Richard B. Hubbard Sprir.cfielo, Illinois 62706 Vice Presidei.t Technical Associates I:r. D. P. Hall 1723 Hamilton Ave. - Suite 1:

Vice President San Jose, CA 95125 Clinton Power Staticr.

P. O. Box 676 Clinton, Illineis, 61727 fir. H. R. Victor Manager-Nuclear Station Er.gir.cerire Dpt.

Clinton Power Station-P. G. Box 678 Clinton, Illinois 61727 Sheldon Zabel, Esquire Schiff, Hardin & Uaite 7200 Sears Tower 233 Wacker Drive Chicago, Illinois 60CC6 Resident inspector U. S. Nuclear.Regulatcry Commission RR 3, Box 229 A

. Clinton, Illinois 61727 fir. R. C. Heider

. Project Manager Sargent & Lundy Engineers 55 East Monroe Street Chicago, Illinois 60003 Mr. L. Larson Project Manager General Electric Conpar.y 175 Curtner Avenue, N/C 395 San Jose, California 95125 Mr. Jaraes G. Keppler U.S. NRC, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137