ML20137P582

Forwards Request for Addl Info Needed to Complete Review of Instrumentation Portion of Util 850927 SPDS Submittal. Submittal Also Reviewed by NRC Human Factor Specialists. Response Requested within 45 Days

ML20137P582
Person / Time
Site:	Vogtle
Issue date:	11/26/1985
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Foster D GEORGIA POWER CO.
References
NUDOCS 8512050055
Download: ML20137P582 (4)

Text

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NOV 2 61985 Docket Nos.: 50-424 and 50-425 Mr. Donald 0. Foster Vice President and Project General Manager ,

Georgia Power Company l Rt. 2, Box 299A I Waynesboro, Georgia 30830 '

Subject:

Request for Additional Information on Vogtle, Units I and 2 Safety Parameter Display System The staff has reviewed the instrumentation portions of your September 27, 1985, submittal on the Vogtle Units 1 and 2 safety parameter display system (SPDS). The enclosure details the information needed by the staff to com-plete its review. Responses should be provided within 45 days of the date of this letter. Human factors specialists on the staff are also reviewing your September 27 submittal. Additional staff questions may arise from this review.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents, therefore OMB clearance is not required under PL 96-511.

If there are questions regarding this letter, contact the Project Manager, Melanie Millcr, at (301) 492-4259.

Sincerely, 16 B. J. Youngblood, Director PWR Project Directorate #4 Division of PWR Licensing-A

Enclosure:

As stated cc: See next page Distribution:

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Mr. Donald Foster Georgia Power Company Vogtle Electric Generating Plant cc:

Mr. L. T. Gucwa Resident Inspector Chief Nuclear Engineer Nuclear Regulatory Comission Georgia Power Company P. O. Box 572 P.O. Box 4545 Waynesboro, Georgia 30830 Atlanta, Georgia 30302 Mr. Ruble A. Thomas Deppish Kirkland, III, Counsel Vice President - Licensing Office of the Consumers' Utility Vogtle Project Council Georgia Power Company / Suite 225 Southern Company Services, Inc. 32 Peachtree Street, N.W.

P.O. Box 2625 Atlanta, Georgia 30303 Birmingham, Alabama 35202 James E. Joiner Mr. R. E. Conway Troutman, Sanders, Lockerman, I Senior Vice President - Nuclear & Ashmore i Power Candler Building Georgia Power Company 127 Peachtree Street, N.E.

P.O. Box 4545 Atlanta, Georgia 30303 Atlanta, Georgia 30302 Douglas C. Teper Mr. J. A. Bailey Georgians Against Nuclear Energy Project Licensing Manager 1253 Lenox Circle Southern Company Services, Inc. Atlanta, Georgia 30306 P.O. Box 2625 Binningham, Alabama 35202 Laurie Fowler, Esq.

218 Flora Avenue, N.W.

Ernest L. Blake, Jr. Atlanta, Georgia 30307 Bruce W. Churchill, Esq.

ik Shaw, Pittman, Potts and Trowbridge Tim Johnson 1800 M Street, N.W. Executive Director Washington, D. C. 20036 Educational Campaign for a Prosperous Georgia Mr. G. Bockhold, Jr. 1083 Austin Avenue, N.E.

Vogtle Plant Manager Atlanta, Georgia 30307 Georgia Power Company Route 2, Box 299-A Billie Pirner Garde Waynesboro, Georgia 30830 Citizens Clinic Director Government Accountability Project Regional Administrator, Region II 303 10th Street  ;

U.S. Nuclear Regulatory Commission Augusta, Georgia 30901 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323'

RE00EST FOR ADDITIONAL INFORMATION CONCERNING THE V0GTLE, UNITS 1 AND 2 SAFETY PARAMETER DISPLAY SYSTEM Each operating reactor shall be provided with a Safety Parameter Display System (SPDS). The Commission approved requirements for an SPDS are defined in NUREG-0737, Supplement 1. In the Regional workshops on Generic Letter 82-33 beld during March 1983, the NRC discussed these requirements and the staff's review of the SPDS.

The staff reviewed the SPDS safety analysis and supplemental documents provided by Georgia Power Company (Reference 1). The staff was unable to complete the review because of insufficient information. The following additional informa-tion is required to continue and complete the review:

INSTRUMENTATION AND CONTROL SYSTEMS BRANCH Isolation Devices Provide the following:

r a. For the type of device used to accomplish electrical isolation, describe the specific testing performed to demonstrate that the device is accept-able for its application (s). This description should include elementary diagrams when necessary to indicate the test configuration and how the maximum credible faults were applied to the devices.

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b. Data to verify that the maximum credible faults applied during the test were the maximum voltage / current to which the device could be exposed, and define bow the maximum voltage / current was determined.

c. Data to verify that the maximum credible fault was applied to the output of the device in the transverse mode (between signal and return) and other faults were considered (i.e., open and short circuits).

d. Define the pass / fail acceptance criteria for each type of device,

e. Provide a commitment that the isolation devices comply with the environ-ment qualifications (10CFR 50.49) and with the seismic qualifications

_ which were the basis for plant licensing.

j f. Provide a description of the measures taken to protect the safety systems

, from electrical interference (i.e., Electrostatic Coupling, EMI, Common Mode and Crosstalk) that may be generated by the SPDS.

REFERENCE:

1. Letter from J. A. Bailey (GN-709) to E. G. Adensam dated September 27, 1985. l l

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