ML20003E833

Forwards Addl Info Re Fire Replication Test for Facility Per 810204 Request

ML20003E833
Person / Time
Site:	Browns Ferry
Issue date:	04/09/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	Ippolito T Office of Nuclear Reactor Regulation
References
NUDOCS 8104170211
Download: ML20003E833 (7)

Text

{{#Wiki_filter:. 2 TENNESSEE VALLEY AUTHORITY CH ATTANOOG A, TENNESSEE 37401 400 Chestnut Street Tower II April 9, 1981 4 Director of Licensing Attention: Mr. Thomas A. Ippo1*.to, Chief OPg L7 ~ Operating Reactors Branch No. 2 44 7/g / g U.S. Nuclear Regulatory Commission A Ap- 'dashington, DC 20555 \\ ,s g ,A'

Dear Mr. Ippolito:

%,._.6 g\\f -,3 In the Matter of the ) Docket No. 50-259 Tennessee Valley Authority ) As requested by your February 4,1?S1, letter to H. G. Parris, we are enclosing additional information which will assist you in the Fire Replication Test for Browns Ferry Nuclear Plant unit 1. An advance, informal copy of this information was transmitted to Leon Przybyla of Underwriters Laboratory on April 2, 1981. Very truly yours, TENNESSEE VALLEY AUTHORITY M'. Milis, Manager Nuclear Regulation and Safety Subscribedygsworntobero me is y day of 1981. Y, Y Not y Public ' jf l My Commission Expires Y d / / Enclosure 8104170 M as caua: osmomo m..=,e P

O .s ENCLOSURE REPLICATION TEST INFORMATION 1. Sprinkler and Spray Systems A. A field check of the spray system indicates the location and position of this system is as shown in your figures. B. Average nozzle pressure: 112.6 psi f; 55 Flow (17 nozzles) 248 gpm 3; 55 Maximum nozzle pressure: 118.16 psi Minimum nozzle pressure: 107.06 psi 2. Water Drainage A. The floor drain is located two feet six inches from the south wall and five feet one inch from the west wall. .This drain has a six-inch diameter grated opening which leads to a three-inch diameter drain line. The slope from the south wall is one inch over 30 inches and the east-west slope is approximately one inch over 40 inches. (See Attachment 1) B. This drain is active. It is not covered with a steel plate. 3 Conduit Junction Box (2576) A. No cables are spliced in this junction box. It is a pull box for the conduit cable. The exterior dimensions are as shown in your submitted figures. ~\\ B. The interior of the box is separated into three { compartments, one for each cable conduit. The cover plate for the box is attached by metal screws and is sealed with an RTV silicone sealant. (See Attachments 2 and 3) 4. Heat Detectors A. The line detectors are routed as shown on Attachment 4. Junction boxes are as shown on Attachment 4. The line detectors are mounted with clips to the rail of the cable tray. B. The detectors are not coated with Flamemastic. C. We are unable to provide you with photographs. 5 Test Configuration A field examination of the test configuration indicates that the dimensions are within allowable tolerances for this test. We have, however, placed design dimensions on Attachments 1, 2, 4, and 5 for your clarification.

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