Requirements concerning the selection of filtering respirators according to ЕN 529:2006 European standard have been analyzed; the requirements have been compared with the national recommendations given in the corresponding ДНАОП 0.00-1.04-07 normative act on labour protection. It has been determined that the protective efficiency of the respiratory protective devices is characterized by three various parameters characterizing the coefficient of protection – two of them are determined at the working place. However, adequate selection of a filtering respirator is tested in terms of nominal coefficient of protection being determined in a laboratory. Such an approach may result in certain errors due to the set of various factors being available under working conditions. It is proposed to use the value of the expected coefficient of protection determined in the USA being equal to 10 MAC while selecting a filtering respirator. Recommendations are given as for the improvement of respiratory protection of a worker under operational conditions.
On the selection of respiratory protective devices for handling of highly toxic contaminants
