Features of the coefficient of variation of parameters of the gas environment in fire in the premises

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.293279

Keywords:

ignition of material, gas environment, dangerous parameters, measure of sample coefficient of variation

Abstract

The object of the study is the selective coefficient of variation of dangerous parameters of the gas environment during the ignition of materials. The measure of the sample coefficient of variation of an arbitrary hazardous parameter of the gas environment observed at an arbitrary time interval is substantiated. The representativeness error of the measure of the sampling coefficient of variation, which depends on the value of the measure and the sample size, was determined. The measure allows you to numerically determine its value for an arbitrary observation interval. The difference in the measure at the intervals corresponding to the reliable absence and occurrence of ignition allows to detect the occurrence of ignition of the material. According to the results of laboratory studies, the measures of the sample coefficient of variation for carbon monoxide concentration, smoke density, and temperature of the gas medium in the laboratory chamber at intervals of absence and appearance of ignition of alcohol, paper, wood, and textiles were determined. It was established that the dangerous parameters of the gas environment at the intervals of absence and presence of ignition are characterized by different values of the increase in the measure of the sample coefficient of variation. For example, it is determined that the ignition of alcohol causes the maximum increase in the measure for carbon monoxide concentration from 0.135 to 0.441, for smoke density from 0.629 to 0.805, and for temperature from 0.001 to 0.115. When paper catches fire, the measure for carbon monoxide concentration and temperature increases from 0.0026 to 0.140 and from 0.0019 to 0.05, respectively. When burning wood, the measure for carbon monoxide concentration and temperature increases from 0.0072 to 0.177 and from 0.0067 to 0.016, respectively. The obtained results, provided that the hazardous parameters of the gas environment in the premises are measured and the sample coefficient of variation is calculated in practice, make it possible to use them in the creation of early fire detection systems

Author Biographies

Boris Pospelov, Scientific-Methodical Center of Educational Institutions in the Sphere of Civil Defence

Doctor of Technical Sciences, Professor

Yuliia Bezuhla, National University of Civil Defence of Ukraine

PhD, Associate Professor

Department of Prevention Activities and Monitoring

Yurii Kozar, Luhansk State Medical University

Doctor of Law Sciences, Professor

Department of Biology, Histology, Pathomorphology and Forensic Medicine

Olekcii Krainiukov, V. N. Karazin Kharkiv National University

Doctor of Geographical Sciences, Professor

Department of Environmental Safety and Environmental Education

Larysa Chubko, National Aviation University

PhD, Associate Professor

Department of Biotechnology

Oleksandr Yashchenko, National University of Civil Defence of Ukraine

PhD, Associate Professor

Department of Management and Organization in the Field of Civil Protection

Olena Liashevska, National University of Civil Defence of Ukraine

PhD, Associate Professor

Department of Management and Organization in the Field of Civil Protection

Sergey Shcherbak, National University of Civil Defence of Ukraine

PhD, Associate Professor

Department of Fire and Rescue Training

Pavlo Cherevko, Uzhhorod National University

PhD, Associate Professor

Department of Civil Law and Procedure

Viacheslav Kurepin, Mykolayiv National Agrarian University

PhD, Associate Professor

Department of Professional Training Methods

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Features of the coefficient of variation of parameters of the gas environment in fire in the premises

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Published

2023-12-22

How to Cite

Pospelov, B., Bezuhla, Y., Kozar, Y., Krainiukov, O., Chubko, L., Yashchenko, O., Liashevska, O., Shcherbak, S., Cherevko, P., & Kurepin, V. (2023). Features of the coefficient of variation of parameters of the gas environment in fire in the premises. Eastern-European Journal of Enterprise Technologies, 6(10 (126), 58–64. https://doi.org/10.15587/1729-4061.2023.293279

Issue

Vol. 6 No. 10 (126) (2023): Ecology

Section

Ecology

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Copyright (c) 2023 Boris Pospelov, Yuliia Bezuhla, Yurii Kozar, Olekcii Krainiukov, Larysa Chubko, Oleksandr Yashchenko, Olena Liashevska, Sergey Shcherbak, Pavlo Cherevko, Viacheslav Kurepin

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