ML20215H841

Forwards Request for Addl Info Re Util 870123 & 0409 Submittals Concerning ATWS Mitigation Sys Actuation Circuitry.Response Requested within 30 Days of Ltr

ML20215H841
Person / Time
Site:	Mcguire, Catawba, McGuire, 05000000
Issue date:	06/17/1987
From:	Hood D Office of Nuclear Reactor Regulation
To:	Tucker H DUKE POWER CO.
References
TAC-59081, TAC-59111, TAC-59112, TAC-64535, NUDOCS 8706240232
Download: ML20215H841 (4)

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Docket Nos.: 50-369, 50-370 f L

50-413, 50-414 1 ? JUN 39g7 Mr. H. B. Tucker, Vice President l Nuclear Production Department Duke Power Company l l

422 South Church Street Charlotte, North Carolina 28242 ,

Subject:

Request for Additional Information Concerning the ATWS/AMSAC  !

Design at the McGuire and Catawba Nuclear Stations (TACs 59111, 57#Y/ J 112 # 916, and 64535)

On June 8,1987, the staff held a conference call with members of Duke Power Company to discuss your submittals of January 23, 1987, and April 9,1987, concerning the ATWS mitigation system actuation circuitry. We find that '

additional information, identified in the enclosure, is required to complete our review.

Your response to the enclosure is requested within 30 days of this letter.

Contact me at (301) 492-8961 or K. Jabbour at (301) 492-7367 if you have questions. i 4

i5 Darl S. Hoo , Project Manager Project Directorate II-3 1 Division of Reactor Projects I/II

Enclosure:

As stated cc: See next page DISTRIBUTION:

Q!ocket Fy11e" Local PilR l NRC PDR l PDII-3 Reading

} BJYoungblood Reading i MDuncan MMiller EJordan JPartlow ACRS(10)

Glainas/SVarga JMauck -

RStevens 77 j'} f PDII-3/ RPI/II PDIh3/DRPI/II PDII-3/DRRI/II PD -f/ I/II KJabbour MDuncan BJ our od DHood/ rad 06/ 87 06/ /87 06/g/87 06//7 /87 8706240232 870617 PDR ADOCK 05000369 P PDR

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-ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION (RAI) -

.CONCERNING THE CATAWBA NUCLEAR STATION, UNITS 1 AND 2 MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 ANTICIPATED TRANSIENTS WITHOUT SCRAM The staff helc'a conference call with the licensee on June 8,'1987 to discuss the licensee's proposed ATWS/AMSAC design. As.a. result of the conference call, .

the staff- requests the following additional information:

1.- The response.to Question 3 of the April 9, 1987-letter stated that the L3 , WCAP recommended time delay of 30 seconds'for the initiation of:the AMSAC signal is not. required. The staff.needs additional information/ t justification regarding the omission of the 30'second time. delay as -

recommended.by theLWCAP.

2. The. response to the RAI (April 9,1987). is not clear as to why the C

• TD0D provision _is not being implemented. This TD00 ensures that the.

.AMSAC mitigative action once started goes to completion. Provide the

details of how the AMSAC initiation signal is maintained upon AMSAC actuation.

3 .- .The submittal. of January 23, 1987 discusses system instabilities below the-56% power._ level. Addendum No. I to the WCAP calls-for arming AMSAC at the

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.40% power level._ Discuss how the steam generator pre-heating requirements

- and the feedwate'r control. valve operational characteristics are being handled at this lower AMSAC arming set-point.

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i Mr. H. B. Tucker i

Duke Power Company Catawba Nuclear Station I

cC. . 1 A.V. Carr, Esq. North Carolina Electric Membership I Duke Power Company Corp. J

.422 South Church Street 3400 Sumner Boulevard j 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, 1 and Reynolds Inc. J 1200 Seventeenth Street, N.W. P.O. Box 929' L 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 Commission, L.L. Williams- .

101 Marietta Street, NW, Suite 2900 Area Manager, Mid-South Area Atlanta, Georgia 30323 j, ESSD Projects Westinghouse Electric Corp.

MNC West Tower - Bay 239 f)

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 i 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 1 S.C. Attorney General's Office P.O. Box 11549 Spence Perry, Esquire Columbia, South Carolina 29211 General Counsel  !

Federal Emergency Management Agency Piedmont Municipal Power Agency Room 840 1 100 Memorial Drive 500 C Street Greer, South Carolina 29651 Washington, D. C. 20472 Mr. Michael Hirsch Federal Emergency Management Agency Office' of the General Counsel Room 840 500 C Street, S.W.

Washington, D. C. 20472 Brian P. Cassidy, Regional Counsel Federal Emergency Management Agency, Region I J..W. McCormach POCH Boston. N sechosatts 0?100

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,,: a Mr.~H. B. Tucker: .

L LDuke Power Company' McGuire Nuclear Station-

.CC: , . .

I t ;Mr.'A.V. Carr, Esq. Dr. John M. Barry .

Duke Power Company . Department of Environmental. Health P

,. 0.' Box 33189- l Mecklenburg. County

-, ~422 South Church Street. 1200 Blythe Boulevard '

L l Charlotte, North ' Carolina - 28242 Charlotte, North Carolina . 28203 County. Manager of Mecklenburg County

'720 East Fourth Street' 4 Charlotte, North Carolina 28202 Chairman, North Carolina Utilities-Commission Mr. Robert' Gill Dobbs Building Duke' Power. Company. . .

430 North Salisbury Street Nuclear Production Department Raleigh, North Carolina. 27602 4.- P. O. Box 33189

- Charlotte, North' Carolina 28242 Mr. Dayne H. Brown. Chief Radiation Protection. Branch J. Michael. McGarry, III, Esq. Division of Facility Services Bishop, Libernan, Cook, Purcell Department of Human Resources and Reynolds .

701 Barbour Drive 1200 Seventeenth Street, N.W. Raleigh, North Carolina 27603-2008

Washington, D. C. 20036 i:

Senior Resident Inspector ..

c/o U.S. Nuclear Regulatory Commission

Route 4, Box 529 L Hunterville, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Commission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 L. L. Williams Area Manager, Mid-South Area ESSD. Projects Westinghouse Electric Corporation

- HNC West Tower. - Bay 239 P. 0. Box 355 Pittsburgh, Pennsylvania 15230 L