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Simulation of critical evacuation conditions for a fire scenario involving cables and comparison of two different cables

Van Hees, Patrick LU ; Nilsson, Daniel LU and Berggren, Emil LU (2010) In LTH report 3147.
Abstract
Previous studies on the evaluation of irritant species from burning cables in a

modified prEN 50399 fire test produced FEC/FED values based on ISO TS 13571.

However, the ISO standard mentions in its scope that these indices can only be used

within e.g. modelling. For this reason Europacable (ECBL) initiated a preliminary

case-study to asses the possibility of using modern fire safety engineering techniques.

The scope of the project was the evaluation of the evacuation conditions for a

realistic fire scenario involving two types of cable fires that produce different levels

of heat, smoke and gases. Both CFD (Computational Fluid Dynamics) modelling by

means of the... (More)
Previous studies on the evaluation of irritant species from burning cables in a

modified prEN 50399 fire test produced FEC/FED values based on ISO TS 13571.

However, the ISO standard mentions in its scope that these indices can only be used

within e.g. modelling. For this reason Europacable (ECBL) initiated a preliminary

case-study to asses the possibility of using modern fire safety engineering techniques.

The scope of the project was the evaluation of the evacuation conditions for a

realistic fire scenario involving two types of cable fires that produce different levels

of heat, smoke and gases. Both CFD (Computational Fluid Dynamics) modelling by

means of the software package FDS (Fire dynamics simulator) and evacuation

modelling by means of the software package Simulex were performed. The results

were used to calculate FED (fractional effective doses) and FEC (fractional effective

concentration). The results showed that the developed methodology allows

evaluation of critical evacuation conditions based on not only temperature and

visibility, but also on gas composition. One of the selected cables created critical

conditions for some of the occupants during evacuation for the chosen design fire

when the production of irritant gases (HCl, acreolein, Formaldehydes) is considered. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Book/Report
publication status
published
subject
keywords
fire, simulation, cables, evacuation, toxicity, CFD, fractional effective dose
in
LTH report
volume
3147
pages
42 pages
publisher
Lund University
ISSN
1402-3504
language
English
LU publication?
yes
id
a9623de7-a906-4c65-b4a0-b49df93300fc (old id 1977099)
date added to LUP
2011-06-15 15:00:43
date last changed
2018-05-29 11:06:43
@techreport{a9623de7-a906-4c65-b4a0-b49df93300fc,
  abstract     = {Previous studies on the evaluation of irritant species from burning cables in a<br/><br>
modified prEN 50399 fire test produced FEC/FED values based on ISO TS 13571.<br/><br>
However, the ISO standard mentions in its scope that these indices can only be used<br/><br>
within e.g. modelling. For this reason Europacable (ECBL) initiated a preliminary<br/><br>
case-study to asses the possibility of using modern fire safety engineering techniques.<br/><br>
The scope of the project was the evaluation of the evacuation conditions for a<br/><br>
realistic fire scenario involving two types of cable fires that produce different levels<br/><br>
of heat, smoke and gases. Both CFD (Computational Fluid Dynamics) modelling by<br/><br>
means of the software package FDS (Fire dynamics simulator) and evacuation<br/><br>
modelling by means of the software package Simulex were performed. The results<br/><br>
were used to calculate FED (fractional effective doses) and FEC (fractional effective<br/><br>
concentration). The results showed that the developed methodology allows<br/><br>
evaluation of critical evacuation conditions based on not only temperature and<br/><br>
visibility, but also on gas composition. One of the selected cables created critical<br/><br>
conditions for some of the occupants during evacuation for the chosen design fire<br/><br>
when the production of irritant gases (HCl, acreolein, Formaldehydes) is considered.},
  author       = {Van Hees, Patrick and Nilsson, Daniel and Berggren, Emil},
  institution  = {Lund University},
  issn         = {1402-3504},
  keyword      = {fire,simulation,cables,evacuation,toxicity,CFD,fractional effective dose},
  language     = {eng},
  pages        = {42},
  series       = {LTH report},
  title        = {Simulation of critical evacuation conditions for a fire scenario involving cables and comparison of two different cables},
  volume       = {3147},
  year         = {2010},
}