Assessment of the Relationship Between Classes of Substances of Hazard Category “Р” Using the Criterion of Heat of Combustion
Abstract
Purpose. To assess the relationship between the classes of hazardous substances in category “Р” (physical hazards) and their threshold masses for high-hazard object classes 1, 2, and 3 in Ukraine, using the criterion of heat of combustion (energy potential), and to verify the presence of a systematic approach in establishing these masses.
Method. Analysis of the Ukrainian regulatory framework (CMU Resolution No. 1030) ; collection and generalization of data on the heat of combustion/decomposition for representatives of each substance class in category “Р”; calculation of the total energy potential of threshold masses of hazardous substances for high-hazard object classes 1, 2, and 3 ; statistical analysis of the obtained energy indicators (calculation of mean value, standard deviation, relative ratios) to identify correlations between hazard classes and energy potential.
Theoretical implications. The study demonstrates significant variability and a lack of direct correlation between the threshold masses established in Ukraine for substance classes in category “Р” and their heat of combustion. This questions the theoretical justification (from the perspective of a unified energy criterion) of the current high-hazard object classification system, indicating the possible influence of other, non-energetic factors.
Practical implications. The identified discrepancy between threshold masses and energy potential may indicate potential difficulties in the consistent application of a risk-oriented approach to HHO safety management in Ukraine. The results justify the need for further scientific research and potential review or clarification of criteria in the regulatory framework (Resolution No. 1030) to ensure a more consistent and scientifically based classification of high-hazard object’s, which will contribute to more adequate risk assessment and comparison.
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