ML20206G801

Requests Exemption from GDC 4 Re Application of leak-before-break Technology as Basis for Elimination of Protective Devices Against Dynamic Loads Resulting from Postulated Pipe Breaks of Facility Primary Coolant Loops

ML20206G801
Person / Time
Site:	Catawba
Issue date:	04/07/1987
From:	Jabbour K Office of Nuclear Reactor Regulation
To:	Tucker H DUKE POWER CO.
References
NUDOCS 8704150153
Download: ML20206G801 (2)

Text

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Docket No .: 50-413

, and 50-414 Mr. H. B. Tucker, Vice President 7 APR 1987 1 ' Nuclear Production Department Duke Power Company

-422 South Church Street Charlotte, North Carolina 28242

Dear Mr. Tucker:

l

Subject:

Catawba Nuclear Station - Elimination of Large Primary Loop Pipe Ruptures i

By letter dated November 27, 1985, you requested an exemption from General Design Criterion (GDC) 4 regarding the application of " leak-before-break"

technology as a basis for the elimination of protective devices against the

{ dynamic loads resulting from postulated pipe breaks of the Catawba Unit 1 primary coolant loops. ,

Your submittal referenced the NRC staff's letter dated April 23, 1985, which granted this exemption for Catawba Unit 2. Furthermore, you stated that the 1 technical reports submitted for stoff review were applicable to both Catawba Units but your earlier exemption request was only for Unit 2. Based on its 1 review of your submittals, the staff finds that the technical basis is the -

4 same for both Units. Therefore, you have provided the technical justification

{ for eliminating from the design basis the dynamic loads from postulated pipe j breaks. '

i j On April 11, 1986, a final rule was published (51 FR 12502), effective May 12, t 1986, amending 10 CFR Part 50, Appendix A, GDC 4. Thus, there is no longer a i

! need to grant an exemption regarding this issue. Furthermore, your analysis for l i Catawba Unit 1 primary coolant loops is adequate to demonstrate compliance with l GDC 4 as revised. Accordingly, protective devices associated with those loads

, may be removed from the Catawba Unit I primary coolant loops.

If you require any clarification of this matter, please contact me at j (301)492-7367.

S n erely, h[fl$och 0000413 Ka tan N. Jabbour, Project Manager I p PDR PWR Project Directorate #4 Division of PWR Licensing-A i cc: See next page  :

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Mr. H. B. Tucker Duke Power Company Catawba Nuclear Station cc:

A.V. Carr, Esq. North Carolina Electric Membership Duke Power Company Corp.

422 South Church Street 3400 Sumner Boulevard Charlotte, North Carolina 28242 P.O. Box 27306 Raleigh, North Carolina 27611 J. Michael McGarry, III, Esq.

Bishop, Liberman, Cook, Purcell Saluda River Electric Cooperative, and Reynolds Inc.

1200 Seventeenth Street, N.W. P.O. Box 929 Washington, D. C. 20036 Laurens, South Carolina 29360 North Carolina MPA-1 Senior Resident Inspector Suite 600 Route 2, Box 179N 3100 Smoketree Ct. York, South Carolina 29745 P.O. Box 29513 Raleigh, North Carolina 27626-0513 Regional Administrator, Region II U.S. Nuclear Regulatory Comnission, L.L. Williams 101 Marietta Street, NW, Suite 2900 Area Manager, Mid-South Area Atlanta, Georgia 30323 ESSD Projects Westinghouse Electric Corp.

MNC West Tower - Bay 239 P.O. Box 355 Pittsburgh, Pennsylvania 15230 Mr. Heyward G. Shealy, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 County Manager of York County York County Courthouse Karen E. Long York South Carolina 29745 Assistant Attorney General N.C. Department of Justice Richard P. Wilson, Esq. P.O. Box 629 Assistant Attorney General Raleigh, North Carolina 27602 S.C. Attorney General's Office i P.O. Box 11549 Spence Perry, Esquire i Columbia, South Carolina 29211 General Counsel Federal Emergency Management Agency Piedmont Municipal Power Agency Room 840 100 Memorial Drive 500 C Street Greer, South Carolina 29651 Washington, D. C. 20472 Mr. Michael Hirsch l Federal Emergency Management Agency Office of the General Counsel Roora 840 500 C Street, S.W.

Washington, D. C. 20472 Brian P. Cassidy, Regional Counsel Federal Emergency Management Agency, l Region I l J. W. McCormach POCH Boston, Massachusetts 02109