Developing the Methodology of Assessment Drifting Vapor-Gas Cloud Ignition Probability Considering the Location of Ignition Sources of Periodic Action in Urban Conditions

For citation.
Byzov A.P., Kolesnikov E.Yu., Denisov I.E., Zhitnikova T.S., Poroshin D.S. Developing the Methodology of Assessment Drifting Vapor-Gas Cloud Ignition Probability Considering the Location of Ignition Sources of Periodic Action in Urban Conditions. Bezopasnost Truda v Promyshlennosti = Occupational Safety in Industry. — 2025. — № 7. — рр. 32-38. (In Russ.). DOI: https://doi.org/10.24000/0409-2961-2025-7-32-38


Annotation:

Modern urban development is a territory built up with shopping centers, residential areas, as well as industrial facilities and gas stations. Such proximity to various territories poses several industrial safety hazards. Therefore, the need for accident risk assessment associated with accidental leakage and the generation of air-fuel mixtures increases. The existing methodologies, such as the Order of Rostechnadzor as of 28.11.2022 № 411 “On approval of the Safety Guide ‘Methodology of accident risk assessment in process pipelines associated with the transportation of explosion and fire-hazardous liquids”, do not consider the existing features of urban development and the potential distribution of ignition sources.
The study aims to improve the methodology of assessment of drifting vapor-gas cloud ignition probability, considering the location of periodical action ignition sources in urban conditions. For the purposes of the study, new typical urban development territories and ignition sources specific to them have been identified, for which parameters that impact the probability of the ignition of an air-fuel mixture cloud have been calculated. As a result of the study, the methodology for calculating parameters of periodical action ignition sources has been developed, including the order of measurements and preparation of initial data. Expressions to process initial data obtained during measurements have been proposed. Based on the developed methodology, provided expressions, and measurement results, parameters of ignition sources of periodic action in urban conditions have been calculated. The calculations have resulted in numerical values of ignition source parameters for various urban development. Developing the methodology of assessment of drifting vapor-gas cloud ignition probability will allow for an assessment of drifting vapor-gas cloud ignition probability in urban conditions.

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DOI: https://doi.org/10.24000/0409-2961-2025-7-32-38
Year: 2025
Issue num: July
Keywords : risk depressurization probability ignition ignition sources drifting vapor-gas cloud urban development
Authors:
  • Byzov A.P.
    Cand. Sci. (Eng.), Assoc. Prof. of the Higher School of Technosphere Safety
  • Kolesnikov E.Yu.
    Dr. Sci. (Eng.), Prof. of the Higher School of Technosphere Safety, Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russian Federation
  • Denisov I.E.
    Master’s Student of the Higher School of Technosphere Safety
  • Zhitnikova T.S.
    Postgraduate Student of the Higher School of Technosphere Safety
  • Poroshin D.S.
    General Director, dsporoshin@teconsulting.ru 1 Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russian Federation 2 TEK LLC, Saint Petersburg, Russian Federation