Investigation of Cable and Cable System Fire Test Parameters: Task A — IEEE 383 Flame Test (NUREG/CR-4112, US 75-1, Volume 1)
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Manuscript Completed: December 1984
Date Published: January 1985
Underwriters Laboratories Inc.
333 Pfingsten Road
Northbrook, IL 60062
Division of Engineering Technology
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
NRC FIN B-6197
The flame test in the Institute of Electrical and Electronics Engineers (IEEE) Standard 383 was investigated. The investigation was to develop possible modifications in test equipment and test procedure that would increase the repeatability of results and provide additional information useful in assessing cable system performance in response to a real fire. Several fire experiments were conducted varying different test parameters. The experimental data were analyzed and modifications of both test equipment and test procedure were developed. These modifications were: an enclosure for the sample, defining cable damage; cable fastening and the cable tray to be used; establishing tolerances for exhaust of the enclosure; starting temperature of the ambient air and cable sample; location of the burner and the flow rates of fuel and air into the burner. Suggested also, was to report the maximum flame height versus time and the rate of heat released versus time as additional information that could be useful in assessing cable system performance.