Threshold methodologies n the damage thresholds observed from experiments or accident data . Threshold values provide the minimum intensity of hazardformative factors able to cause equipment damage . Threshold methods mainly focus on the domino effects caused by technological hazards, which can be effectively used to develop "rules of thumb" or as a screening tool for the preliminary assessment of possible escalation scenarios . However, equipment vulnerability not only depends on the intensity of hazard-formative factors but also on the features of hazardaffected objects and the sensitivity of hazard-formative environment . The analysis of threshold values is a case-dependent problem and is associated with a high degree of uncertainty . Unfortunately, threshold methods cannot cope with the uncertainties, thus, different and apparently conflicting threshold values may be obtained due to different data sources . In addition, due to the mutually amplified phenomena, the threshold values observed from single hazard scenarios become even less reliable in multi-hazard coupling scenarios.