Assessment of Probabilistic Characteristics for the Fire Initial Stage Detection using Thermal Detectors

One of the reasons for the untimely detection of ignition sources and fire is the failure of the fire detector. Current standards and practices impose certain requirements on the characteristics of fire detectors, but the probability of fire correct detection is not assessed. In this paper, a theoretical study and calculation of the probabilistic characteristics of fire initial stage detection using thermal fire detectors is carried out based on the requirements of Ukrainian and European standards regarding a two-threshold response scheme and certification testing methods. As a result, the detection characteristic has been calculated, which indicates an unsatisfactory correlation between the requirements of the two fire safety standards.