ML20237H774

Interim Deficiency Rept Re Emergency HVAC Sys in Control Room.Initially Reported on 870713.Engineering Evaluation in Progress to Determine Potential Impacts of Condition on Plant Safety.Final Rept Will Be Submitted by 870915

ML20237H774
Person / Time
Site:	Vogtle
Issue date:	08/12/1987
From:	Rice P GEORGIA POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
GN-1391, NUDOCS 8708170354
Download: ML20237H774 (1)

Text

Georgia Nwer Company Nst Office Box 282 l ' Waynesboro, Georgia 30830 -

! . Telephone 404 554 9961, Extension 3413 404 724-8114, Extension 3413 l

L P. D. Rice Georgia Power V'

• Pre ent August 12,. B87 j y3 ,p , me soumem vecec sgrem i

.q United States Nuclear Regulatory Commission Document Control Desk File: X7BG03-M139' Washington, D. C. 20555 Log: GN-1391

Reference:

Vogtle Electric Generating Plant - Unit 2; 50-425 Control Room Emergency HVAC .j On July 13,1987,' Mr. R. E. Folker, Vogtle Project Quality Assurance Engineer, notified Mr. E. F. Christnot of the .USNRC-Region II-of a -potentially reportable' condition involving the. Emergency HVAC System .in the Control Room. In certain accident conditions involving the failure of one diesel generator' train, the possibility exists that a short-circuit . exhaust path could be left in' the Control Room Emergency HVAC ductwork _by partially opened isolation dampers in the failed train. The isolation dampers . are designed to maintain the position they are in at time of power loss. No analysis was performed to demonstrate that, with the additional exhaust paths, enough outside air would be brought in to maintain a positive differential pressure in the control room as required i; in Section 6.4.4 of the FSAR.

An engineering evaluation is currently in progress' to determine the potential impacts of this condition on plant safety. Georgia Power Company expects to complete its evaluation and submit a final report on this condition to the USNRC by September 15, 1987.

This correspondence contains no proprietary information and may be placed in the NRC Public Document Room.

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P. D. Rice CWH/PDR/wkl xc: USNRC - Region II Suite 2900 t

101 Marietta Street, NW

! Atlanta, GA 30323 H. G. Baker D. R. Altman L. T. Gucwa /

J. P. O'Reilly J. A. Bailey C. W. Hayes #

i R. E. Conway G. Bockhold R.'W. McManus ;E l R. H. Pinson C. E. Belflower Sr. Resident (NRC) l E. D. Groover J. F. D'Amico C. C. Garrett (OPC)

R. M. Bellamy D. Feig (GANE) J. E. Joiner'(TSLA)

NORMS 8700170354 870012 l

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