ML20052F179

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Forwards Revision 4 to Analysis of Hydrogen Control Measures at McGuire Nuclear Station & Combustion Studies at High Hydrogen Concentrations & Effect of Obstacles on Combustion.
ML20052F179
Person / Time
Site: McGuire, Mcguire  Duke Energy icon.png
Issue date: 05/04/1982
From: Parker W
DUKE POWER CO.
To: Adensam E, Harold Denton
Office of Nuclear Reactor Regulation
Shared Package
ML20052F180 List:
References
NUDOCS 8205120204
Download: ML20052F179 (3)


Text

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VeCF PntgeCttet May 4, 1982 ICLEPMonet:Anta 704 Stra e Pnoouctiove 373-4003 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission p Washington, D. C. 20555 Attention: Ms. E. G. Adensam, Chief O NECEfVED' Licensing Branch No. 4 7 g i e umun,,111982m DENGl Re: McGuire Nuclear Station 1 j, Docket Nos. 50-369, 50-370 s 4

Dear Mr. Denton:

Attached herewith are 20 copies of Revision 4 to Duke Power Company's report "An Analysis of Hydrogen Control Measures at McGuire Nuclear Station." The purpose of this revision is to provide an interim project report for the Combustion Phenomena Testing program at Whiteshell Laboratories.

Please advise if you have any questions regarding this information.

V y truly your N

_ y',

NM N.

William O. Parker, J .

GAC:scs Attachment cc: Mr. James P. O'Reilly, Regional Administrator Mr. P. R. Bemis U. S. Nuclear Regulatory Commission Sr. Resident Inspector Region 11 McGuire Nuclear Station 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 95 \

820512o204 820504 PDR ADOCK 05000369 P PDR

AN ANALYSIS OF HYDROGEN CONTROL MEASURES AT ,

MCGUIRE NUCLEAR STATION

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Insertion Sheet E. vision 4 '

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Volume 1 - Chapter 2 2.8-2 2.8-2 f Volume 2 - Appendix 2J Add Interim Project Report in back of Appendix 2J

with fans and grating. Tests are to be conducted with both items individually and jointly. Fan flow is varied from zero to a combined maximum of approximately 3000 cfm. The grating consists of a 1/4 inch plate perforated with 1 inch diam-eter holes, resulting in a blockage of 50%. Plates are located one third and two thirds the vessel height. Hydrogen concentrations are varied from 6 to 20 v/o. In Phase 4, a pipe approximately one foot in diameter and 20 feet long is attached to the sphere. Tests are to be conducted with uniform and non-uniform hydrogen concentrations varying from 6 to 20%. Ignition will be in the pipe and in the sphere. These tests provide data on the effects of flame propagation from one geometry into another, as well as the effects of propagation from one -

concentration to another.

Test results obtained appear to confirm that steam and turbulence have com-peting effects on hydrogen combustion. Steam tends to reduce the rate and p degree of combustion, while turbulence promotes rapid and more complete V

combustion. However, as the hydrogen concentration approaches stoictiometric, 4 the effect of turbulence becomes marginal. The effect of gratings is dependent on the hydrogen concentration. Gratings appear to enhance the combustion rate of lean mixtures due to splitting of the fire ball. However, the heat sink effect of the gratings appear to dominate for relatively rich concentrations; thus reducing the peak pressure. All testing, with the exception of Phase 4, has been completed. Phase 4 i.esting is scheduled for completion by early May.

Two interim reports, dated December, 1981 and April, 1982 are presented in Appendix 2J. These reports present the results obtained in the first three phases of the project.

2.8-2 Revision 4