ML20128C249

Requests Addl Info Re Proposed Methodology for Analysis of Primary Coolant Loops at Plant for Steam Generator Replacement

ML20128C249
Person / Time
Site:	Mcguire, Catawba, McGuire
Issue date:	01/28/1993
From:	Tim Reed Office of Nuclear Reactor Regulation
To:	Rehn D DUKE POWER CO.
References
TAC-M84736, TAC-M84737, TAC-M84738, NUDOCS 9302030363
Download: ML20128C249 (5)

Text

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January 28, 1993

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Docket Nos. 50-369, 50-370 2 and 50-413 4

Mr. D. L. Rehn l General Manager, Nuclear Services  !

l Duke Power Company P. O. Box 1007 Charlotte, North Carolina 28201-1007 i

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - METHODOLOGY FOR ANALYSIS OF PRIMARY COOLANT LOOPS FOR STEAM GENERATOR REPLACEMENT FOR MCGUIRE UNITS 1 AND 2, AND CATAWBA UNIT I (TAC HOS. M84736/M84737/M84738)

The NRC staf f is reviewing Duke Power Company's sut,mittals of October 15 and November 13, 1992, regarding the proposed methodology for the analysis of the primary coolant loops at McGuire Units I and 2, and Catawba Unit I for steam generator replacement. We find that we need additional information in order to complete our review. Accordingly, please respond to the questions identified in the enclosure, if you have any questions concerning this request, please contact me at (301) 504-1479.

This request affects fewer than ten respondents and is, therefore, not subject to Office of Management & Budget review under P.L.96-511.

Sincerely,

/s/

Timothy A. Reed, Project Manager Project Directorate 11-3 Division of Reactor Projects-l/II Office of Nuclear Reactor Regulation

Enclosure:

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% January 28, 1993 Docket Nos. 50-369, 50-370 and 50-413 ,

Mr. D. L. Rehn General Manager, Nuclear Services ,

Duke Power Company .

P. O. Box 1007 '

Charlotte, North Carolina 28201-1007

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - METHODOLOGY FOR ANALYSIS OF PRIMARY COOLANT LOOPS FOR STEAM GENERATOR REPLACEMENT FOR MCGUIRE UNITS 1 AND 2, AND CATAWBA UNIT 1 (TAC NOS. M84736/M84737/M84738)-

The NRC staff is reviewing Duke Power Company's submittals of October 15 and November 13 1992,.regarding the proposed methodology for the analysis of the primary coolant loops .at McGuire jnits 1 and 2, and Catawba Unit l~ for steam generator replacement. We find that we need additional information in order to complete our review. Accordingly, please respond to the questions ,

identified in the enclosure, if you have any questions concerning this request, please contact me at (301) 504-1479.

This request affects fewer than ten respondents.and is, therefore, not subject to Office of Management & Budget review under P.L.96-511.

Sincerely, a

imothy A. Reed, Project Manager Project Directorate 11-3 Division of Reactor Projects-1/II Office of Nucisar Reactor Regulation- ,-

rnclosure:

Request for Additional Information cc w/ enclosure:

See next page 0 -

a.  :,

D Duke Power Company Catawba Nuclear Station McGuire Nuclear Station cc:

Mr. R. C. Futrell Mr. Alan R. Herdt, Chief Regulatory Compliance Manager Project Branch #3 Ouke Power Company V. S. Nuclear Regulatory Commission a800 Concord Road 101 Marietta Street, NW Suite 2900' York, South Carolina 29745 Atlanta, Georgia 30323 A. V. Carr, Esquire North Carolina Electric Membership Duke Power Company Corporation 422 South Church Street P. 0. Box 27306 Charlotte, North Carolina 28242 Raleigh, North Carolina 27611 J. Michael McGarry, !!!, Esquiro Saluda River Electric Cooperative, i Winston and Strawn Inc.

1400 L Street, NW. P. O. Box 929 Washington, DC 20005 Laurens, South Carolina 29360 North Carolina MPA-1 Senior Resident inspector Suite 600 Route 2 Box 179N P. O. Box 29513 York, South Carolina .29745 Raleigh, North Carolina 27626 ~

Regional Administrator,-Region !!

Mr. T. Richard Puryear U.S. Nuclear Regulatory Commission. 7 Nuclear Technical Services Manager 101 Marietta Street, NW Suite ?900 Carolinas District Atlanta, Georgia 30323 Westinghouse Electric Corporation P. O. Box 32817 Mr. Heyward G. Shealy, Chief Charlotte, North Carolina 28232 Bureau of Radiological Health South Carolina Department of Health-County Manager of York County and Environmental Control York County Courthouse 2600 Bull Street York, South Carolina 29745 Columbia,-South Carolina' 29201 Richard P. Wilson, Esquire Ms. Karen E. Long' Assistant Attorney General Assistant Attorney General' __

SC Attorney General's Office North Carolina Department of Justice P. O. Box 11549 P. O. Box 629~-

Columbia, South Carolina 29211- Raleigh,'. North Carolina 27602

• Piedmont Municipal Power Agency Mr. G. A. Copp-121 Village Drive Licensing --EC050 Greer, South Carolina 29651 Duke Power Company-P. 0 Box 1006 Charlotte, North Carolina 28201-1006- -

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Duke Power Compary Catawba Nuclear Station McGuire Nuclear Station Cc:

Dr. John M. Barry Mr. M. S. Tuckman Mecklenburg County Vice President, Catawba Site Department of Environmental Duke Power Company Protection 4800 Concord Road 700 N Tryon Street York, South Carolina 29745 Charlotte, North Carolina 29202 Mr. T. C. McHeekin County Manager of Mecklenburg County Vice President, McGuire Site 720 East Fourth Street Duke Power Company Charlotte, North Carolina 28202 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Mr. Robert O. Sharp Compliance Duke Power Company McGuire Nuclear Site 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Senior Resident inspector c/o U.S. Nuclear Regulatory Commission 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Mr. Dayne H. Brown, Director Department of Environmental Health and Natural Resources Division of Radiation Protection P. O. Box 27607 Raleigh, North Carolina 27611

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ENCLOSURE Request for Additional Information McGuire 1/2 and Catawba 1 ,

Methodology for Analysis of Primary. Coolant Loops for steam Generator Replacement (SGR).

1 In the May 17, 1990, safety evaluation report methodology (DGH) used for generating floor son res(SER) of the

=e spectra (FF.5)direct for generation the snubber reduction program at Catawba 1 and 2, t1e .4RC staff approved, after ',

extensive discussions with Duke Power Company (DPC), the use of a composite--  :

ground response spectrum (GRS) as in)ut for generating the FRS utilizing _ an_

appropriate DGM (Reference 1). In t1e same SER, the. staff also approved the-use of a computer program called EDASP for DGM.- In response to a question-(raised by the staff during a teleconference on October 28,1992), DPC stated that it will generate the new FRS using either the time history method or the DGM as permitted in Section 3.7 of the FSAR.

1. DPC should clarify if it intends to use, in the SGR project at Catawba 1, the same composite GRS and the DGM that were approved for the snubber reduction program at Catawba 1 and 2 in the May 17, 1990, SER cited above; if not, DPC should furnish the details of the GRS and the analysis procedure it will use for generating the FRS for the SGR project at Catawba 1. In order to expedite the resolution.of this-issue, DPC is advised to review all of its submittals and the staff's review comments and additional information requests on-its application for the snubber reduction program at Catawba 1 and 2, and provide detailed information on the two related issues, namely, the GRS and the analysis procedure used.

2. Similarly, furnish the details of the GRS and the analysis procedure that will be used for the SGR project at McGuire 1 and 2.

Referenggn

1. Letter from K. N. Jabbour, NRC, to 't. B. Tucker, DPC, dated May 17, 1990, " Safety Evaluation of Direct Generation Method of Generating Floor Response Spectra for the Snubber Reduction Program ---Catawba > '

Nuclear Station, Units 1 and 2".