Objectif The main objective of this project is the formulation of substitutes for the halons which have the best efficiency as chemical inhibitors of combustion and the lowest ozone depletion potential (O.D.P.).Preliminary studies have indicated that viable alternative compounds will be found among the follwing type of compounds:(a) the perfluoroalkanes - fully fluorinated compounds (FCs)(b) the hydrofluoroalkanes - hydrofluorinated hydrocarbons (HFCs)(c) patially chlorinated or brominated hydrocarbons such as the hydrochlorofluorocarbons (HCFs)Compounds of type (a) and (b) are considered as suitable replacements since they contain no chlorine or bromine and will therefore have no effect on ozone depletion. Compounds of type (c) will have lower ozone depletion potentials since the presence of hydrogen in the molecule makes them susceptible to attack by OH in the lower atmosphere. This reduces their residence time in the atmosphere and a smaller fraction of the parent compound compared to the CFCs will therefore reach the stratosphere to cause ozone loss.Therefore, with the purpose of formulating substitutes of halons which have optimal properties as fire-extinguishing agents, the main objectives of this project can be summarized as follows:* Producing reliable experimental data concerning the ability of FCs, HFCs or HCFCs to inhibit oxidations, flames and detonations,* Improving the understanding of the mechanism of the inhibition of combustions and oxidations by FCs, HFCs or HCFCs.* Developing correctly validated mechanistic models aimed at the prediction of the inhibition induced by the addition of FCs, HFCs or HCFCs.* Analysis of the potential atmospheric impacts of using the proposed replacements of halons, including experimental investigation of their reactivity with ozone to see whether this could represent a significant atmospheric loss process for the parent compound. Champ scientifique natural sciencesearth and related environmental sciencesatmospheric sciencesnatural scienceschemical scienceselectrochemistryelectrolysisnatural scienceschemical sciencesorganic chemistryhydrocarbonsnatural sciencesearth and related environmental sciencesenvironmental sciencesozone depletionnatural scienceschemical sciencesinorganic chemistryhalogens Programme(s) FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994 Thème(s) 0202 - Technologies for protecting and rehabilitating the environment Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Contribution de l’UE Aucune donnée Adresse Rue Grandville 1 54001 NANCY France Voir sur la carte Coût total Aucune donnée Participants (5) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France Contribution de l’UE Aucune donnée Adresse Avenue de la Recherche Scientifique 1 C 45071 ORLEANS Voir sur la carte Coût total Aucune donnée National and Kapodistrian University of Athens Grèce Contribution de l’UE Aucune donnée Adresse Panapistimiopolis 15771 Athens Voir sur la carte Coût total Aucune donnée UNIVERSITA DEGLI STUDI DI PERUGIA Italie Contribution de l’UE Aucune donnée Adresse Via Elce di Sotto 8 06123 PERUGIA Voir sur la carte Coût total Aucune donnée United Kingdom Atomic Energy Authority Royaume-Uni Contribution de l’UE Aucune donnée Adresse 353,Harwell OX11 0RA Didcot - Oxfordshire Voir sur la carte Coût total Aucune donnée Université Catholique de Louvain Belgique Contribution de l’UE Aucune donnée Adresse 1,Place Louis Pasteur 1348 Louvain-la-Neuve Voir sur la carte Coût total Aucune donnée