ML20054K074

Submits List of Outstanding Info Required to Complete Evaluation of Hydrogen Control Issue.Info Requested by 820628

ML20054K074
Person / Time
Site:	Grand Gulf
Issue date:	06/23/1982
From:	Schwencer A Office of Nuclear Reactor Regulation
To:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
References
NUDOCS 8207010023
Download: ML20054K074 (2)

Text

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i. DISTRIBUTION:

M 2UIM Document Control (50-416)

NRC PDR L PDR NSIC P

Docket Hos. 50-416/417 tB 2 Reading EHylton DHouston Mr. J.P. i'cGaughy T o Assistant Vice President ,, Wagner, OELD Nuclear Production I&E

!!ississippi Power & Light Company Region II l P.O. Box 1640 Jackson, Mississippi 39205 ACRS (16) l WButler CTinkler  !

Dear Mr. McGaughy:

CPTan

Subject:

Outstanding Infomation Requests for Hydrogen Control Over the past few months, the staff has been working closely with MP&L to complete their review of hydrogen control at Grand Gulf. They have informally requested data and analysis and much of this material has been submitted by MP&L. At this point, it appears that only the following itens remain outstanding:

1. An evaluation of the response of the air-locks to a local detonation.

2. An evaluation of pool dynamic impact loads and pool carry-over due to hydrogen combustion.

3. An expanded evaluation of equipment survivability for pressure, especially for the drywell vacuum breakers and drywell purge compressors.

4 Identification of the valves to be used in Emergency Procedure 05-S-01-EP-9 for venting and an evaluation of their operability at the expected pressure differentials.

When the above information is received, the NRC staff should be able to complete their evaluation of the hydrogen control issue for interim approval .

This evaluation is the pacing item for our next SSER and the subsequent ACRS meeting. Because of this, we request that you provide the necessary resources to furnish this information by June 28, 1982.

Sincerely,

@207010023 820623 PDR ADOCK 05000416 A. Schwencer, Chief P PDR Licensing Branch No. 2 4 o,,,c o . P.k e, M p t (J"16c"_ MsR./ ptfyt. ,

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[3 Grand Gulf Mr. J. P. McGaughy Assistant Vice President '

Nuclear Produstion Mississippi Power & Light Company ~

P. O. Box 1640 -

Jackson, Mississippi 39205 cc: Robert B. McGehee, Esquire ..

. Wise, Carter, Child, Steen and Caraway .. - - -

P. O. Box 651 -

Jackson, Mississippi 39205

. ,s Troy B. Conner, Jr. , Esquire

. Conner and Wetterhahn -

1747 Pennsyl vania Avenue, N'. M. -

Washington, D. C. 20006 _ ,

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Dr. O. C. Gibbs, Vice President a Middle South Energy, Inc.

225 Baronne Street P. O. Box 6100 New Orleans,. Louisiana 70161 l Mr. John Richardson -

Mississippi Power & Light Compary P. O. Box 1640 Jackson, Mississippi 39205 Mr. R. Trickovic, Project Engineer ~

Grand Gulf Nuclear Station -

Bechtel Power Corporation , ,

Gaithersburg, Maryland 20760 . -

Mr. Alan G. Wagner Resident Inspector Route 2, Box 150 Port G'ibson, F .,sissippi 38150 l

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