ML20138Q486

Forwards Spray Actuation Data for Scoping Tests S.11 & S.12.2 & Thermocouple Data for Tests S.09 & S.11,per 850909 Telcon.Response to Listed Item 3 Re Variation in Test Will Be Submitted in Near Future

ML20138Q486
Person / Time
Site:	Grand Gulf
Issue date:	11/14/1985
From:	Hobbs S HYDROGEN CONTROL OWNERS GROUP, MISSISSIPPI POWER & LIGHT CO.
To:	Bernero R Office of Nuclear Reactor Regulation
References
HGN-066, HGN-66, NUDOCS 8511180132
Download: ML20138Q486 (14)

Text

S -416 m

MARK 111 CONTAINMENT HYDROGEN CONTROL OWNERS GROUP som H. nose,. choi, mon c/a Mississippi Power and Light e P.O. Dox 1640 e Jackson. Mississippi 39205 601 969-2458 November 14, 1985 HCN-066 Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Attention:

Mr. Robert Bernero

SUBJECT:

Response to Questions from Staff in September 9 Telecon on September 9, 1985, in a telephone conversation between an NRC staff member and the Hydrogen Control Owners Group (HCOG) Administrative Program Manager, a commitment was made to provide the following:

1) information identifying the point at which sprays were initiated in the 1/4 scale test facility for scoping tests S.11 and S.12.2; 2) thermocouple data for instruments T-200, T205 and T208 for tests S.09 and E.11; and 3) a discussion of the variation in test results between scoping tests S.01, S.02, S.03 and S.05.

In response to Item 1, plots of spray flow data and the associated hydrogen injection profiles for tests S.11 and S.12.2 are provided in Attachment 1.

The spray flow plots indicate both the time at which the simulated containment spray system was actuated and the corresponding system flowrate. The hydrogen injection profiles reflect the case B hydrogen release histories which were used in both scoping tests. As indicated by these plots, the containment sprays were actuated after the peak hydrogen injection rate had occurred.

In response to Item 2, the thermocouple traces for Instruments T200, T205 and T208 for scoping tests S.09 and S.11 are provided in Attachment 2.

The response to item 3 is currently being developed and will be provided to the NRC in the near future.

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Page 2 of 2 HGN-066 This submittal was compiled by HCOG from the best information available for submittal to the Nuclear Regulatory Commission. The submittal is believed to be complete and accurate, but it is not submitted on any specific plant docket. The information contained in this letter and its attachments should not be used for evaluation of any specific plant unless the information has been endorsed by the appropriate member utility. HCOG members may individually reference this letter in whole or in part as being applicable to their specific plants.

Very truly yours, MJM/GWS:vog Attachment cc:

Mr. Carl R. Stahle Hydrogen Control Project Manager U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D. C.

20555 Mr. Charles G. Tinkler Containment Systems Branch Office of Nuclear Reactor Regulation Washington, D. C.

20555 Sandia National Laboratories Attention:

Mr. John C. Cummings Organization 1512 P. O. Box 5800 Albuquerque, New Mexico 87185 J13HC0C85111401 - 2

ATI'AOMENT 1: SPRAY ACIUATICN DATA RR TESTS S.11 AND S.12.2

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