ML20207Q585

SER Re Generic Ltr 83-28,Item 2.1 (Part 2) Concerning Vendor Interface Programs for Reactor Trip Sys Components.Util Response Acceptable.Item Closed

ML20207Q585
Person / Time
Site:	Catawba
Issue date:	01/15/1987
From:	NRC
To:
Shared Package
ML20207Q521	List: ML20207Q520 ML20207Q585
References
GL-83-28, NUDOCS 8701280135
Download: ML20207Q585 (4)

Text

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I SAFETY EVALUATION REPORT GENERIC LETTER 83 78, ITEM 2.1 (PART 21 VEN00R INTERFACE PROGRAfi5 (RT5 COMPONENTS)

CATAWBA NUCLEAR STATION, (! NITS 1,?

DOCKET NOS. 50-413/414 INTRODilCTION AND

SUMMARY

On February PS,1983, both of the scran circuit breakers at U tit 1 of the Salem Nuclear Power Plant failed to open upon an automatic reactor trip signal from the reactor protection system. This incident was terminated manually by the operator about 30 seconds af ter the initiation of the automatic trip signal.

The failure of the circuit breakers was determined to be related to the sticking of the undervoltage trip attachment. Prior to this incident, on February 22, 1083, at Unit 1 of the Salem Nuclear Power Plant, an automatic trip signal was generated based on steam generator low-low level durino plant start-uo. In this case, the reactor was tripped manually by the operator almost coincidentally with the automatic trip.

Following these incidents, on February ?8,1983, the NRC Executive Director for Operations (EDO), directed the staff to investigate and report on the generic implications of these occurrences at linit 1 of the Salem Nuclear Power Plant.

The results of the staff's inquiry into the generic implications of the Salen unit incidents are reported in NilREG-1000 " Generic implications of the ATNS Events at the Salem Nuclear Power Plant." As a result of this investigation, the Commission (NRC) requested (by Generic Letter 83-28 dated iluly R,1983I )

all licensees of operating reactors, applicants for an operating license, and holders of construction pemits to respond to generic issues raised by the analyses of these two ATWS events.

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This report is an evaluation of the response submitted by Duke Power Connany, the licensee for the Catawba Nuclear Station, Units 1,2, for item 7.1 (Part 2) of Generic Letter 83-28. The actual documents reviewed as part of this evaluation are listed in the references at the end of the report.

Item 2.1 (Part 2) requires the licensee to confirm that an interface has been established with the NSSS or with the vendors of each of the components of the Reactor Trip Systen which includes:

periodic communication between the licensee / applicant and the NSSS or the vendors of each of the components of the Reactor Trip System, and a system of positive feedback which confirms receipt by the licensee / applicant of transmittals of vendor technical information.

EVALUATION The licensee for the Catawba Nuclear Station, Units 1,? responded to the require-ments of item 2.1 (Part ?) with a submittal dated November 4,1983 . The licensee stated in this submittal that Westinghouse is the NSSS for the Catawba Nuclear Station, Units 1,2 and that the RTS is included as part of the Westinghouse inter-face program established for this plant. The response also confirms that this interface program includes both periodic communication between Westinghouse and the licensee /aoplicant and positive feedback from the licensee / applicant in the form of signed receipts for technical information transmitted by Westinghouse.

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-3 CONCLUSION Based on our review of these responses, we find the licensee's statements confirm that a vendor interface progran exists with the NSSS vendor for components that are required for performance of the reactor trip function. This program meets the reovirements of Iten 2.1 (Part ?) of the Generic Letter 83-28, and is there-fore acceptable.

REFERENCES

1. NRC Letter, D. G.-Eisenhut to all Licensees of Operating Reactors, Applicants for Operating License, and Holders of Construction Pernits,

" Required Actions Based on Generic Implications of Salem ATWS Events (Generic Letter 83-?8)," July 8, 1983, i

2. Duke Power Company letter to NRC, H. B. Tucker tn D. G. Eisenhut, f

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Director, Division of Licensing, NRC, November 4,1983.

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

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

422 South Church Street 3400 Sumner Boulevard Charlotte, North Carolina ?8242 P.O. Box 27306 Raleigh, North Carolina ?7611 J. Michael McGarry, III, Esq.

Bishop, Libeman, 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, Recion II U.S. Nuclear Regulatory Comission, L.L. Williams 101 Marietta Street, NW, Suite 2900 Area Manager, Mid-South Area Atlanta, Georgia 30323 ESSD Proiects Westinghouse Electric Corp.

MNC West Tower - Bay 239 P.O. Box 355 Pittsburgh, Pennsylvania 15230 Fr. Heyward G. Shealy, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 99701 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 Raleich, North Carolina 27602 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 640 100 Memorial Drive 500 C Street Greer, South Carolina 29651 Washington, D. C. 20472 Mr. Michael Hirsch Federal Emergency Management Acency Office of the General Counsel Room Ba0 500 C Street, S.W.

Washington, D. C. ?0472 Brian P. Cassidy, Regional Counsel Federal Emergency Management Agency, Region I J. W. McComach P0CH Boston, Massachusetts 02109