ML20148E095

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Advises That on 780915,full-scale Vertical Cable Tray Array W/Cable Protection Using Fire Barriers & Sprinklers Conducted at Ul to Demonstrate Effectiveness of Area Sprinklers & Mineral Wool blanket-type Cable Tray Barriers
ML20148E095
Person / Time
Site: Black Fox
Issue date: 10/02/1978
From: Tedesco R
Office of Nuclear Reactor Regulation
To: Vassallo D
Office of Nuclear Reactor Regulation
Shared Package
ML20148E041 List:
References
TASK-AS, TASK-BN-78-20 BN--78-20, NUDOCS 7811060106
Download: ML20148E095 (1)


Text

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fu e r Ckere;.N C Q j0  % UNIT E D STATES ei c% NUCLEAR REGULATORY COMMISslON h . $~,, ) WASHINGT ON, D. C. 20555

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g '...+ p g OCT 0 21978 MEMORANDUM FOR: Domenic B. Vassallo, Assistant Director for Light Water Reactors, DPM FROM: Robert L. Tedesco, Assistant Director for Plant Systems, DSS

SUBJECT:

UL FIRE TEST On September 15, 1978, a fire test of a full-scale vertical cable tray array with cable protected by fire barriers and sprinklers was conducted at the Underwriters' Laboratory near Chicago, Illinois. It was part of the NRC-expedited fire protection research program requested in the Commission's Order of April 13, 1978. Ihe purpose of the test was to demonstrate the effectiveness of area sprinklers and mineral wool blanket type cable tray fire barriers in preventing damt .a to cables as a result of an exposure tire created by igniting two callons of heptane. ,

The Commissiorers have been informed by the enclosed separate memorandum.

It is appropriate that the ACRS and Boards also be notified where this issue is relevent. We will continue our evaluation of the test results and considerations cf new additional tests to be r;nducted.

dlA<Ld Robert L. Tedesco, Assistant Director for Plant Systems Division of Systems Safety

Enclosure:

As stated cc: R. J. Mattson R. S. Boyd V. Stello V. Benaroya G. Lainas D. Eisenhut B. Grimes g (g6 Ol