Compatibility tests for dry powders and protein foams

Dry chemical extinguishers have been increasingly used in the past twenty years for protection against flammable liquid fires. As the portable dry chenical extinguishers proved to be very effective in dealing with small spill fires, the possibility of developing large-scale equipment was considered. This development was mainly directed toward use against aircraft crash fires. One obvious disadvantage of dry powder is its inability to prevent reignition of the fuel. In order to overcome this problem the combined use of dry powder and protein foam has been widely adopted.Le Conseil national de recherches a mis au point une m\ue9thode d'essai permettant de d\ue9terminer le degr\ue9 de comptabilit\ue9 entre poudres chimiques s\ue8ches et mousses de prot\ue9ines. L'auteur compare les r\ue9sultats obtenue gr\ue2ce \ue0 cette m\ue9thode \ue0 ceux que donne l'essai sur plaque chauffante mis au point pr\ue9c\ue9demment par les Laboratories de recherches de la Marine des Etats-Unis. Le but principal de cette \ue9tude \ue9tait d'\ue9tudier ces deux m\ue9thodes permettant d'\ue9valuer les poudres chimiques s\ue8ches associables aux mousses.Peer reviewed: NoNRC publication: Ye