The smoke released by a fire is certainly the primary threat from which it is necessary to protect the people in the affected space. The creation of smoke-proof filters is one of the responses to this need, as their basic purpose is to prevent the spread of smoke.
A smoke-proof filter is a safety system that works in an emergency; its goal is to effectively separate two compartments in order to protect one of them from the harmful effects that the fire in the adjacent compartment could transmit.
The adoption of overpressure smoke-proof filters in activities subject to fire brigade inspections implies that the system must be designed to the highest standards.
The applicable standards, in addition to providing design criteria, also include information for planning maintenance and the weekly, monthly, and annual checks as well as instructions for re-tests