ML20209G093

Special Rept SPR86-011:on 860811,meteorological Instrumentation Inoperable.Caused by Lightning Strike on or Near Tower.Evaluation of Adequacy of Lightning Protection on Meteorological Tower Will Be Conducted

ML20209G093
Person / Time
Site:	Summer
Issue date:	08/28/1986
From:	Nauman D SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
SPR86-011, SPR86-11, NUDOCS 8609120366
Download: ML20209G093 (2)

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. ina Electric & Ga2 Company n A. N n Columbia. SC 29218 Nuclear Operations (803) 748-3513 SCE&G

- . . . . , 2 Au BB AE 2 ggsg2,8Q1986 Dr. J. Nelson Grace Regional Administrator U. S. Nuclear Regulatory Commission Region ll, Suite 2900 101 Marietta Street, N.W.

Atlanta, Georgia 30323

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Special Report (SPR 86-011)

Dear Dr. Grace:

Attached is a Special Report for the Virgil C. Summer Nuclear Station. This Special Report is submitted pursuant to the requirements of Technical Specification 3.3.3.4 and 6.9.2.

Should there be any questions, please call us at your convenience.

,ery truly yours, 7

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D. A. a n PDL: DAN /dwf Attachment pc: O. W. Dixon, Jr/T. C. Nichols, Jr K. E. Nodland E. H. Crews, Jr. R. A.Stough E. C. Roberts G. O. Percival O. S. Bradham R. L. Prevatte D. R. Moore J. B. Knotts, J r.

J. G. Connelly, J r. S.D.Hogge W. A. Williams, Jr. I&E Washington Group Managers Document Management W. R. Baehr Branch C. A. Price INPO Records Center NPCF W.

C. L.T. Frady(NSRC)

Ligon File R. M. Campbell, Jr.

5G2f 8609120366 86002G PDR ADOCK 05000395 S PDR

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- Dr.J. Nelson Grace SPR 86-011 August 28,1986 EVENT DESCRIPTION On August 11,1986 at approximately 1810 hours0.0209 days <br />0.503 hours <br />0.00299 weeks <br />6.88705e-4 months <br />, a loss of indication on meteorological instrumentation was identified by operators in the main control room. The inoperability of the meteorological instrumentation was due to a lightning strike on or near the meteorological instrumentation tower. The instrumentation affected included the power supply to the signal translator for wind speed and direction, the ten meter wind speed instrument, the forty meter temperature instrument, the ten and sixty one meter wind direction instruments, and the wind direction recorder.

CORRECTIVE ACTION All instrumentation was repaired or replaced and returned to service on August 27,1986. The licensee will conduct an evaluation of the adequacy of the lightning protection on the meteorological tower.

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