This article evaluates the knowledge obtained in firefighting tests using compressed air foam system (CAFS) within a confined space. Six experiments were conducted for verification during the cooling of rooms and the self-extinguishing effect. The simulation was for a fully developed fire within a room. The fuel was chosen to simulate ordinary combustible materials utilized in residential areas. Mantel thermocouples were placed in the rooms to record the temperature changes. Compressed air foam was first applied with a standard fire hose nozzle to the ceiling and then to the epicenter of fire. Fire extinguishing was initiated after reaching the desired temperature in the room. The temperature for the start of fire extinguishing matched the third phase of development of a fire. Fire extinguishing was terminated after no obvious signs of fire were shown in epicenter of fire. The outputs of the experiments were evaluated on the basis of the amount of time passed for the temperature to drop below the suggested limit. Individual experiments were also conducted with various different admixing foaming agents over different locations. In the experiments, it has been verified that the application of compressed air foam has a positive effect on room cooling. Use of a compressed air foaming agent does not allow for the development of steam that can scald firefighters and reduce visibility. Furthermore, the extinguishing agent used is more efficient utilizing less water flow out of the fire area.

— Volatile organic compounds (VOCs) are among the most common pollutants released into the air in the petrochemical and chemical industries. The article deals with removing VOCs while producing plastic granules containing approx. 80% polypropylene and polyethene, together with other additives. In this sector, the simplifying factor is that it deals with only one volatile pollutant, total organic carbon TOC, regardless of the specific materials from which the VOC emission originates. The permissible pollution level indicates a TOC emission limit of 50 mg ∙ m-3 for this production. During operation, emissions are extracted from the machinery to a stationary source. It is a fabric filter where the air is cleaned through a layer of diatomaceous earth. To determine if the above limit is not exceeded, measurements showed that the TOC limits are significantly higher (82.9 mg m-3 ). Therefore, tests were carried out using a mixture of activated carbon and diatomaceous earth. The results showed that activated carbon significantly reduced TOC concentrations to 8.4 mg m-3 . Keywords— Activated carbon, diatomaceous earth, polymers, stationary source, total organic carbon, TOC, volatile organic compounds, VOC.

The chapter deals with the heat radiation of wood during fire. The aim is to verify the theoretical assumption about the heat radiation of spruce wood. For the purpose of verification, the temperatures and radiation were measured under laboratory conditions. The results were compared with the theoretical calculation.

This study deals with the potential possibilities of dispersion and spreading of a concentrated chemical substance (Sarin) indoors during a terrorist attack. The consequences can be seen by using a software program, CONTAM 2.4.