One of the main technical means of extinguishing fires at oil and gas industry facilities are fire extinguishing installations using pulsed powder extinguishing modules in their design. The technical efficiency of pulsed powder extinguishing modules in their design is understood as their ability to eliminate fires with the lowest consumption of extinguishing agents and the absence of re-ignition. The efficiency of the pulsed powder extinguishing modules in their design is influenced by a number of technical parameters, the main of which is the displacement of extinguishing agents from the housing by creating excessive pressure due to the injection of compressed air or combustion of gas-generating elements. Thus, the choice of the preferred type of such an element of the installation design as the pulsed powder extinguishing modules in their design directly affects the efficiency of the installation as a whole. In order to confirm or refute the results of an earlier assessment of the significance of the technical parameters of the pulsed powder extinguishing modules in their design by the expert assessment method, it became necessary to use well-known mathematical methods. To this end, in the article, the authors applied an integrated approach to selecting the most effective pulsed powder extinguishing modules in their design sample for evaluating and improving the effectiveness of fire extinguishing installations.