Methodology of Mathematical Model Creation of Flame Retardants Distribution in Fire Protected Wood

Chumachenko, S.M.; Zhartovskyi, S.V.; Тітенко, Олександр; Trotsko, V.V.

doi:10.15421/40260557

Cited by 2 publications

(2 citation statements)

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“…In the course of the analysis of scientific publications (Lysychenko, 2008;Pyrikov, 2022;Lunova, 2019) concerning approaches to threat assessment, an insufficient level of application of mathematical and computer modeling methods for PD CIF was revealed. The authors mainly use a systematic approach with the use of expert evaluations, method of checklists, and the method of «event trees» (Lysenko, 2018;Chumachenko, 2017).…”

Section: Results and Their Analysismentioning

confidence: 99%

A Method for Assessing Threats for Critical Infrastructure Objects on the Example of an Enemy’s Attack on the Sludge Storage Facilities of the Avdiivka Coke Chemical Plant

Chumachenko,

Lunova,

Murasov

et al. 2024

Journ. Geol., Geogr., and Geoec..

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The difficult situation in eastern Ukraine has made the problem of assessing potential man-made threats more urgent. Among the many industrial enterprises that suffered damage as a result of hostilities, the most environmentally hazardous ones were identified, namely: Yasinivka, Avdiivka, and Yenakiieve coke-chemical plants; Yenakiieve, Makiiivka, and Donetsk metallurgical plants; Alchevsk metallurgical plant; Lysychansk oil refinery; Donetsk state chemical plant; Sloviansk, Luhansk, Vuhlehirsk, and Myronivka thermal power plants; chemical industry enterprises such as Severodonetsk Azot plant and Horlivka Styrol plant. The work proposes a method for assessing threats to critical infrastructure objects from enemy attacks. By applying graph theory and probability theory, the proposed method allows for obtaining quantitative assessments of threats and analyzing possible scenarios to develop cascading effects of emergencies. This helps determine the potential consequences of an attack and evaluate the risks associated with damaging critical infrastructure. The proposed model is based on a structural-logical approach that considers the inter- relationships between different components of the natural-technological geosystem. It will enable obtaining more objective and reliable results when assessing potential military-technological threats to CIOs and analyzing possible cascading effects in the event of damage to these objects. Developing such a model is essential in improving the approaches to assessing threats to CIOs, providing more accu- rate forecasts, and effective risk management. The results of this research can be useful for practical applications in developing strate- gies for the security of CIOs in the context of armed conflict. The results obtained in this work can be useful in developing models for assessing ecological and technological threats to critical infrastructure objects, particularly in the context of military operations. This method will improve the level of protection and help develop effective strategies to counter potential threats to critical infrastructure.

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Section: Results and Their Analysismentioning

confidence: 99%

A Method for Assessing Threats for Critical Infrastructure Objects on the Example of an Enemy’s Attack on the Sludge Storage Facilities of the Avdiivka Coke Chemical Plant

Chumachenko,

Lunova,

Murasov

et al. 2024

Journ. Geol., Geogr., and Geoec..

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“…where x is the coordinate of the distance from the surface deep into the wood sample, m; k 1 is the coefficient, described by a linear approximating function, kg/m -3 ; k 2 is the coefficient, described by a quadratic approximating function, m -1 . Work [26] shows that there is an optimal concentration of fire retardants in the working solution of an impregnating agent in order to achieve the maximum saturation of surface layers of wood during surface impregnation.…”

Section: Procedures For Constructing a Mathematical Model Describinmentioning

confidence: 99%

Procedure for constructing a mathematical model to determine the time of the initial stage of fire evolution

Zhartovskyi

Тітенко

Kyrychenko

et al. 2021

EEJET

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To develop appropriate measures and means of fire protection at facilities, it is relevant to form an idea of the phenomenology of the processes of the occurrence, evolution, and termination of combustion. This paper proposes procedures for building mathematical models of the energy component of those physicochemical processes that occur in wood under the influence of fire, which make it possible to determine the time from the beginning of such an impact to the onset of the phase of flame combustion. The adequacy of mathematical modeling was tested experimentally at a standardized installation for studying flame propagation over the surface of wood. The samples used for the reported theoretical and experimental studies were the specimens of unprotected wood made from 20-mm-thick pine sapwood with a density of 400‒550 kg/m3. The samples of fireproof wood (of the same variety, thickness, and density) were impregnated with a fire retardant based on diammonium phosphate and ammonium sulfate (at consumption of 168.2 g/m2 of dry fire-retardant components). The modeling employed the results from the experimental determining of the ignition temperature of unprotected and fire-proof wood, specifically: 235 °C – for unprotected wood, 410 °C – for fire-proof wood, respectively. The results of mathematical modeling and experimental studies confirm the possibility of significant lengthening of time from the onset of fire exposure to the ignition of fire load from wood when nitrogen-phosphorus impregnating agents are used for fire protection. Procedures of mathematical modeling have been proposed to build models for determining the cooling effect from the use of impregnating fire retardants to protect the wood on the prolongation of the stage of a fire start. Mathematical modeling data could be applied when making impregnating fire retardants

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Methodology of Mathematical Model Creation of Flame Retardants Distribution in Fire Protected Wood

Cited by 2 publications

References 0 publications

A Method for Assessing Threats for Critical Infrastructure Objects on the Example of an Enemy’s Attack on the Sludge Storage Facilities of the Avdiivka Coke Chemical Plant

A Method for Assessing Threats for Critical Infrastructure Objects on the Example of an Enemy’s Attack on the Sludge Storage Facilities of the Avdiivka Coke Chemical Plant

Procedure for constructing a mathematical model to determine the time of the initial stage of fire evolution

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