Toxic Hazard Evaluation of Plenum Cables.
Toxic Hazard Evaluation of Plenum Cables.
(1063 K)
Bukowski, R. W.
UJNR Panel on Fire Research and Safety. 8th Joint Panel
Meeting. May 13-21, 1985, Tsukuba, Japan, 964-987 pp,
1985.
Fire Technology, Vol. 21, No. 4, 252-266, November
1985.
Keywords:
toxic hazards; cables; plenums; polytetrafluoroethylene;
thermal decomposition; thermal conductivity; heat
transfer
Abstract:
Code provisions covering the installation of low voltage
cables in plenum spaces above suspended ceilings used
for environmental air are reviewed. A calculation
procedure which could be used to estimate the potential
toxicity of the decompositon products from these cables
relative to the toxicity of the compartment fire
necessary to decompose the cable insulation is
presented. These estimates are used in a four-step
procedure for estimating Smoke Toxicity Hazard proposed
by the NFPA Toxicity Advisory Committee which is
described. Example calculations for some typical cases
and a discussion of their limitations are included.
This paper presents an example calculation intended to
illustrate the use of this procedure.
