Children in the age of 3-7 years can independently move together with adults in a dangerous zone, however it is impossible to hope, that they can put on the self-rescuer and use its same constructional elements, as adults, especially in a condition of a fright. Hence, it is necessary to provide this category of children the means of protection adapted for putting on on them by adults. Thus reliable fastening of the self-rescuer that at any movements of the child necessary hermetic sealing was provided should be provided. In a design of products it is not necessary to use elements of type of masks, somemask, zagubnic which can cause additional stress, the child should breathe naturally and freely, not test strong pressure upon a head and a body, to have the good review allowing constantly to see being number of adults. It is obvious, that self-rescuers for children of this group on the weight and dimensions cannot come nearer to products of a class of M for adults. Therefore it is not meaningful to divide them on saved and walked though by development it is necessary to aspire to the minimal sizes and weight as the product in any case should be adapted for perenoski.

Children in the age of till three years in considered situations should be transferred on hands. Chambers are necessary for maintenance of their protection the protective nurseries convenient for perenoski in various variants, allowing quickly to place in them the child, germetic the chamber, to provide visual contact of the adult and the child.

Most likely, accident protection devices for children by a principle of action should concern to filtering means though it is not necessary to exclude unequivocally an opportunity of use in products for children of younger age of adaptations for submission of air from an independent source, or its regenerations.

At a substantiation of requirements to self-rescuers the question of definition of admissible norms of influence of harmful substances on an organism of the person is basic. In our opinion, the traditional approach to definition of these norms. Used by development of means of protection of industrial purpose (assignment, destination), is not absolutely lawful. Industrial means of protection of bodies of the breath, intended for the personnel of dangerous manufactures, should provide protection for a long time (a labour shift, several changes). Thus the level of protective properties should be such that it was not observed harmful consequences for health of the person at its work in harmful conditions during and after the seniority. In other words, the maintenance of harmful substances in inhaled air should not exceed a level of maximum permissible concentration.