Sensitivity analysis applied to observable parameters in case of flammable gas dispersion modeling In emergency situation

Stéphane Pagnon (1) , Bruno Debray (1) , Aurélia Bony-Dandrieux (2) , Jérôme Tixier (2) , François Fontaine (1) , Gilles Dusserre (2)

1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 LGEI - Laboratoire de Génie de l'Environnement Industriel

In case of flammable gas release, in order to bring a best adapted operational answer in emergency situation, it is necessary to determine with accuracy gas concentrations and finally safety distances. The expert in charge of modeling is faced with a major difficulty: few (or no) information. Therefore, for a given situation, the generation of different effect distances is possible. A sensitivity analysis was carried out in order to determine the most influential parameters on the estimation of safety distances. The goal was to identify the parameters which it is useless / useful to engage considerable efforts to recover a reliable value.

Keywords: EMERGENCY SITUATION; ATMOSPHERIC DISPERSION; SENSITIVITY ANALYSIS; FLAMMABLE GAS; PROPANE

Domains: Engineering Sciences [physics]

Stéphane Pagnon, Bruno Debray, Aurélia Bony-Dandrieux, Jérôme Tixier, François Fontaine, et al.. Sensitivity analysis applied to observable parameters in case of flammable gas dispersion modeling In emergency situation. 3. International Conference on Risk Analysis and Crisis Response (RACR 2011), May 2011, Loredo, United States. pp.140-145. ⟨ineris-00970922⟩