ML20045B658

Requests Addl Info in Order to Complete Review of Util 930301 Application for License Amends to Change Plant TS Re Surveillance Test Intervals & Allowed Outage Times for Engineered Safety Features Actuation Sys Instrumentation

ML20045B658
Person / Time
Site:	Vogtle
Issue date:	06/10/1993
From:	Hood D Office of Nuclear Reactor Regulation
To:	Hairston W GEORGIA POWER CO.
References
TAC-M85932, TAC-M85933, NUDOCS 9306180233
Download: ML20045B658 (4)

Text

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June =10, 1993 Docket Nos. 50-424 DISTRIBUTION and 50-425 Docket File OGC 15B18 NRC/ Local PDRs ACRS(10) P-315 Mr. W. G. Hairston, III PDII-3 Reading E.Merschoff,RII Executive Vice President -

S.Varga C. Grimes llE23 Nuclear Operations G.Lainas T. Dunning, llE23 Georgia Power Company D.Matthews G.Garg, 8H3

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P. O. Box 1295 D. Hood E.Marinos, 8H3 Birmingham, Alabama 35201 L. Berry J.Wermiel, 8H3

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING BYPASS TEST INSTRUMENTATION, V0GTLE NUCLEAR GENERATING PLANT, UNITS 1 AND 2 (TAC NOS. M85932 AND M85933) j i

The NRC staff is reviewing your application of March 1,1993, for license i

amendments to change the Vogtle Technical Specifications regarding surveillance test intervals and allowed outage times for engineered safety 1

features actuation system instrumentation.

The application includes Westinghouse's WCAP-13376, Revision 2, " Bypass Test Instrumentation for the Vogtle Electric Generating Plant Units 1 and 2" (Proprietary) and associated WCAP-13377, Revision 2, same title, (Non-proprietary).

We find that additional information, identified in the enclosure, is needed for completion of our review.

Your written response to the enclosure is requested within 45 days of receipt i

of this letter.

If you have questions regarding the enclosure or are unable to meet the requested response date, contact me at (301) 504-3049.

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

Sincerely, ORIGINAL SIGNED BY:

Darl S. Hood, Senior Project Manager Project Directorate 11-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information cc w/ enclosure:

See next page 0,f_

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WASHINGTON, D.C. 20555-0001 June 10,1993 Docket Nos. 50-424 and 50-425 Mr. W. G. Hairston, Ill Executive Vice President -

Nuclear Operations Georgia Power Company P. O. Box 1295 Birmingham, Alabama 35201

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING BYPASS TEST INSTRUMENTATION, V0GTLE NUCLEAR GENERATING PLANT, UNITS 1 AND 2 (TAC NOS. M85932 AND M85933)

The NRC staff is reviewing your application of March 1, 1993, for license amendments to change the Vogtle Technical Specifications regarding surveillance test intervals and allowed outage times for engineered safety features actuation system instrumentation. The application includes Westinghouse's WCAP-13376, Revision 2, " Bypass Test Instrumentation for the Vogtle Electric Generating Plant Units 1 and 2" (Proprietary) and associated WCAP-13377, Revision 2, same title, (Non-proprietary).

We find that additional information, identified in the enclosure, is needed for completion of our review.

Your written response to the enclosure is requested within 45 days of receipt of this letter.

If you have questions regarding the enclosure or are unable to meet the requested response date, contact me at (301) 504-3049.

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

Sincerely, NL Darl S. Hood, Senior Project Manager Project Directorate 11-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information cc w/ enclosure:

See next page

ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION REGARDING WCAP-13376, REVISION 2 1.

Clarify how and when the Solid State Protection System (SSPS) input relays will be tested. Will the testing include operability of all the relay contacts? Also, are the SSPS input relays tested in the bypassed condition?

2.

A channel input can be bypassed indefinitely in order to isolate a particular unwanted input signal.

However, this bypass leaves the control room operator without information about individual inputs to the channel except at the channel level.

Discuss the bypass test instrumentation's compliance with RG 1.47 in view of this condition.

3.

Section 3.1 of WCAP 13376 discusses a "make-before-break" switch for maintaining power for the nuclear instrumentation system (NIS) channel testing in the bypass condition. Why does Figure 1 of the report not show this switch? The report is not clear where the switch is located and what effect the failure of this switch would have upon the operability of the channel.

Are similar switches installed for NSS/B0P circuits that are de-energized for trip?

4.

We note from WCAP 13376, Figure 2, Sheet 1, that a failure of the contact (a short) of the bypass toggle switch -- which is an undetectable failure -- would result in the KS relay for that input signal being connected in parallel with other KS relays.

This could 4

result in an unsafe condition since both of these KS relays have to be de-energized for the channel to trip.

Please discuss and justify the acceptability of the design in this respect.

5.

Figures 1 through 3 of WCAP 13376 imply that control room status i

indication is a light, while the discussion on page 16 of WCAP-13376 states that the annunciation is provided for the control room indication.

Please clarify the status indication to the control room.

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Mr. W. G. Hairston, Ill Georgia Power Company Vogtle Electric Generating Plant cc:

Mr. J. A. Bailey Harold Reheis, Director

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Manager - Licensing Department of Natural Resources Georgia Power Company 205 Butler Street, SE. Suite 1252' P. O. Box 1295 Atlanta, Georgia 30334 Birmingham, Alabama 35201 Attorney General Mr. J. B. Beasley Law Department General Manager, Vogtle Electric 132 Judicial Building Generating Plant Atlanta, Georgia 30334 P. O. Box 1600 Waynesboro, Georgia 30830 Mr. Alan R. Herdt Project Branch-#3 Regional Administrator, Region II U. S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission 101 Marietta Street, NW. Suite 2900 101 Marietta Street, NW., Suite 2900 Atlanta, Georgia 30323 Atlanta, Georgia 30323 Mr. Dan H. Smith, Vice President Office of Planning and Budget Power Supply Operations Room 615B Oglethorpe Power Corporation 270 Washington Street, SW.

2100 East Exchange Place Atlanta, Georgia 30334 Tucker,' Georgia 30085-1349 Mr. C. K. McCoy Charles A. Patrizia, Esquire Vice President - Nuclear Paul, Hastings, Janofsky & Walker Vogtle Project 12th Floor Georgia Power Company 1050 Connecticut Avenue, NW.

P. O. Box 1295 Washington, DC 20036 Birmingham, Alabama 35201 Art Domby, Esquire Office of the County Commissioner Troutman Sanders Burke County Commission 600 Peachtree Street Waynesboro, Georgia 30830 NationsBank Plaza Suite 5200 Atlanta, Georgia 30308-2210 Resident Inspector U. S. Nuclear Regulatory Commission P. O. Box 572 Waynesboro, Georgia 30830 1