ML20011F529

Withdraws 881107 Proposed Amend to Tech Spec 3.8.1.1, Revising Action Requirements for Inoperable Diesel Generator to Clarify Acceptability of Air Roll Tests on Remaining Operable Diesel Generator

ML20011F529
Person / Time
Site:	Vogtle
Issue date:	02/26/1990
From:	Hairston W GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ELV-01298, ELV-1298, NUDOCS 9003060211
Download: ML20011F529 (2)

Text

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• p *- . Georgia Power Compaty <

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333 Picomoni Avenue -

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Post Ofke Box 1295 i brmingham, A!atema 35201 -

' Wephone 205 66B 5581 February 26, 1990 ,,m,w ,, w4,,,

' W G. Hairston, til

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. Nuclear Operatons

- ELV-01298 0223 j 4 Docket Nos.- 50-424 50-425 U. S. Nuclear Regulatory Commission ATTN: . Document Control Desk Washington,:D. C. 20555 Gentlemen:

V0GTLE ELECTRIC GENERATING PLANT WITHDRAWAL OF PROPOSED AMENDMENT 10 TECHNICAL SPECIFICATION 3.8.1.1 By letter dated November 7, 1988 (VL-110), Georgia Power Company (GPC) proposed to amend'.the Vogtle Electric Generating Plant Unit 1 Technical' Specifications.

The proposed amendment would have revised the action requirements of Specification 3.8.1.1, for an -inoperable diesel generator, to clarify when it is acceptable-to perform an air roll test on the remaining operable diesel

. generator. By letter dated May 19, 1989-(ELV-00517), GPC requested that the

~ proposed amendment be applied to the combined Unit 1 and Unit 2 Technical

~ Speci fications.

The basis for the proposed amendment centered on the interpretation of Footnote

< # as it applies to Action-Statements b and c of Specification 3.8.1.1. In the event of an inoperable-diesel = generator, or the combination of an inoperable -

-offsite circuit and an inoperable diesel generator, the action requirements call for.the remaining operable diesel generator to be tested regardless of when the inoperable diesel generator is restored to operability. Footnote #' prohibits this testing from rendering the remaining diesel generator inoperable by

-activities performed to support testing pursuant to the Action Statements. This prohibits the performance of an air roll prior to testing pursuant to the Action-Statements, because the air roll would prevent the diesel from automatically starting if a real emergency was to occur. However, in accordance with NUREG-1216, " Safety Evaluation Report Related to the Operability and Reliability of- Emergency Diesel Generators Manufactured by Transamerica Delaval, Inc.," it is desirable to perform air roll tests to check for the presence of water in the cylinders as long as the action does not render both trains of diesel generators inoperable simultaneously. In addition, the air roll test reduces the possibility of engine damage during testing. The proposed amendment would have revised Footnote # to clarify that, if the inoperable diesel generator is restored to operable status prior to testing the remaining operable diesel, the air roll 'could be performed because both diesels would not be inoperable simultaneously.

9003060211 900226 4 I p, DR ADOCK 0500 @g. j

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LGeorgia Powerkh l

U. S. Nuclear Regulatory Commission ELV-01298 Pace Two However, discussions'with the NRC staff subsequent to submittal of the proposed amendment indicated that the clarification is not necessary. The basis for this position is that, if the inoperable diesel generator is restored to_ operable status prior to testing of the remaining operable diesel, performance of the air roll will not render both diesels inoperable: simultaneously. Therefnre it.is not necessary. to apply Footnote # and, in fact, it is desirable to perform the air roll test. GPC concurs with this position' and we therefore withdraw the proposed amendment to Specification 3.8.1.1 as requested in VL-110 and revised by ELV-00517.

Please contact this office if you have any questions.

Sincerely, a)). /bA%

W. G. Hairston, til WGH,lll/NJS/gm xc: Georola Power Comoany Mr. C. K. McCoy Mr. G. Bockhold, Jr.

Mr. R. M. Odom Mr. P. D. Rushton NORMS Southern Company Services Mr. J. L. Leamon U. S. Nuclear Regulatory Commission Mr. S. D. Ebneter, Regional Administrator Mr. D. B. Matthews, Director, Project Directorate II-3 Mr. R. F. Aiello, Senior Resident inspector, Vogtle

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