ML20246L274

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Forwards Anl Draft Rept Re Main Steam Line Breaks in Plants Ice Condenser,Per Util 880613,0907 & 1012 Ltrs & WCAP-10988 & WCAP-10986P,for Review & Comments within 60 Days.W/O Encl
ML20246L274
Person / Time
Site: Mcguire, Catawba, McGuire, 05000000
Issue date: 05/11/1989
From: Jabbour K
Office of Nuclear Reactor Regulation
To: Tucker H
DUKE POWER CO.
References
TAC-60973, TAC-67767, TAC-67768, TAC-67803, NUDOCS 8905180284
Download: ML20246L274 (5)


Text

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May 11, 1989 Docket Nos.: 50-413, 50-414, 50-369 and 50-370 Mr. H. B. Tucker, Vice President Nuclear Production Department Duke Power Company 422 South Church Street Charlotte, North Carolina 28242

Dear Mr. Tucker:

SUBJECT:

MAIN STEAM LINE BREAKS IN ICE CONDENSER PLANTS - CATAWBA AND MCGUIRE NUCLEAR STATIONS, UNITS 1 AND 2 (TACS 60973/67803 AND 67767/67768)

By letter dated April 7,1988, the NRC staff requested information on Westinghouse Topical Report WCAP-10988, " COBRA-NC, Analysis for a Main Steamline Break in the Catawba Unit 1 Ice Condenser Containment." The information was needed by the staff's contractor, Argonne National Laboratory, to complete its confirmatory analysis of WCAP-10986P, " Ice Condenser Drain Test Results, Data Analysis and Development of Drain Flow Model for the LOTIC-III Ice Condenser Code." You responded by letters dated June 13, September 7 and October 12, 1988.

Enclosed is a copy of the draft report by the staff's contractor.

It is based on the information you have provided. Please review the report and provide your comments within 60 days of receipt of this letter.

In particular, review Section 4.2 (Case 2 results) where the contractor finds that certain local containment temperatures significantly exceed the environmer.tal qualification temperature for Catawba. The staff recognizes that there may be unnecessary conservatism in the contractor's model. The McGuire plant is also affected due to the design similarity of the ice condenser containments in Catawba and McGuire.

If you have any questions regarding the enclosure or are unable to meet the requested response date, please contact me at (301) 492-1496, or D. Hood at (310) 492-1442.

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Mr. H. B. Tucker May 11, 1989 The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P. L.96-511.

Sincerely, rA a.7C Kahtan N. Jabbour, Project Manager Project Directorate II-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/o encl.:

See next page 1

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4 Mr. H. B. Tucker May 11, 1989 The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P. L.96-511.

Sincerely,

/s Kahtan N. Jabbour, Project Manager Project Directorate II-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/o encl.:

See next page DISTRIBUTION:

Docket File NRC PDR Local PDR PDII-3 Reading S. Varga 14-E-4 i

G. Lainas 14-H-3 D. Matthews 14-H-25 M. Rood 14-H-25 K. Jabbour OGC (For inform. Only) 15-B-18 E. Jordan MNBB-3302 B. Grimes 9-A-2 J. Wermiel 8-D-1 ACRS (10)

P-315 McGuire Plant File Oconee Plant File 5tr p'

PN I-3 PDII-PDII-3 SWB

'MkWld KJabbour:ls DHood JWermiel atthews 05/// /89 05////89 05/g/89 05/// /89 05/g/89

Nr. H. B. Tucker Duke Power Company McGuire Nuclear Station cc:

Mr. A.V. Carr, Esq.

Dr. John M. Barry Duke Power Company Department of Environmental Health P. O. Box 33189 Mecklenburg County 422 South Church Street 1200 Blythe Boulevard

- Charlotte, North Carolina 28242 Charlotte, furth Carolina 28203 County Manager of Mecklenburg County Mr. Dayne H. Brown, Chief 720 East Fourth Street Radiation Protection Branch Charlotte, North Carolina 28202 Division of Facility Services Department of Human Resources i

701 Barbour Drive Mr. J. S. Warren Raleigh, North Carolina 27603-2008 Duke Power Compny Nuclear Production Department Mr. Alan R. Herdt, Chief P. O. Box 33189 Project Branch #3 Charlotte, North Carolina 28242 U.S. Nuclear Regulatory Commission 101 Marietta Street, NW, Suite 2900 J. Michael McGarry, III, Esq.

Atlanta, Georgia 30323 Bishop, Cook, Purcell and Reynolds 1400 L Street, N.W.

Ms. Karen E. Long Washington, D. C.

20005 Assistant Attorney General N. C. Department of' Justice Senior Resident Inspector P.O. Box 629 i

c/o U.S. Nuclear Regulatory Comission Raleigh, North Carolina 27602 Route 4, Box 529 Hunterville, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 Ms. S. S. Kilborn Area Manager, Mid-South Area ESSD Projects Westinghouse Electric Corporation MNC West Tower - Bay 239 P. O. Box 355 Pittsburgh, Pennsylvania 15230 l

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o-Mr. H. B. Tucker Oconee Nuclear Station j

Duke Power Company Units Nos. 1, 2 and 3 i

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Mr. A. V. Carr, Esq.

Mr. Paul Guill Duke Power Company Duke Power Company P. O. Box 33189 Post Office Box 33189 422 South Church Street 422 South Church Street Charlotte, North Carolina 28242 Charlotte, North Carolina 28242 J. Michael McGarry, III, Esq.

Bishop, Cook, Purcell & Reynolds Mr. Alan R. Herdt, Chief 1400 L Street, N.W.

Project Branch #3

' Washington, D.C.

20005 U.S. Nuclear Regulatory Cosmission 101 Marietta Street, NW, Suite 2900 Mr. Robert B. Borsum Atlanta, Georgia 30323 Babcock & Wilcox Nuclear Power Division Ms. Karen E. Long Suite 525 Assistant Attorney General 1700 Rockville Pike N. C. Department of Justice Rockville, Maryland 20852 P.O. Box 629 Raleigh, North Carolina 27602 Manager, LIS NUS Corporation 2536 Countryside Boulevard Clearwater, Florida 34623-1693 Senior Resident Inspector U.S. Nuclear Regulatory Commission Route 2, Box 610 Seneca, South Carolina 29678 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 Mr. Heyward G. Shealy, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Office of Intergovernmental Relations 116 West Jones Street Raleigh, North Carolina 27603 Honorable James M. Phinney County Supervisor of Oconee County Walhalla, South Carolina 29621 1

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