A method for preventing the emergency resulting from fires in the premises through operative control over a gas medium

Поспелов, Борис; Meleshchenko, Ruslan; Krainiukov, Olekcii; Karpets, Kostiantyn; Petukhova, Olena; Bezuhla, Yuliia; Butenko, Tetiana; Horinova, Viktoriia; Borodych, Pavlo; Kochanov, Eduard

doi:10.15587/1729-4061.2020.194009

Cited by 15 publications

(16 citation statements)

References 26 publications

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“…The method is based on the results of the system analysis of the FP occurrence, performed in [15]. It is known that when FP occurs, the state of IAE is determined by a combination of various hazardous factors [12].…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

“…However, the classic RP method is not operational. Therefore, for the efficiency of the RP method, it is necessary to use its modification [15], defined as:…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

“…Therefore, by analogy with [41], it is proposed to use the PC measure determined on the basis of (3) for the increments of the IAE states during ignition. This PC measure for increments (2) of the VSP states during ignition will be determined [15] in the form:…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

“…In such a system, the known methods do not allow one to identify complex relationships between elements, since they are based on the principles of linearity, which are usually not fulfilled in real conditions. This leads to an erroneous assessment of the real dynamics of the state of the IAE, which does not make it possible to promptly predict FP [15]. At the same time, the nature of the current dynamics of the state of the IAE is of paramount importance for predicting the FP in order to exclude the injury and death of the maintenance personnel, as well as the destruction of technological equipment and units in the premises of the objects [16].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Development of the method of operational forecasting of fire in the premises of objects under real conditions

Поспелов¹,

Andronov

Rybka

et al. 2021

EEJET

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A method for operational forecasting of fires is proposed that enables the sequential implementation of five procedures. The method development is necessary to predict early fires in premises in order to take measures to prevent them from escalating into an uncontrolled combustion phase ‒ a fire. As a result of research, it was found that a short-term forecast of the recurrence of increments of the air conditions by one step, based on the current measure of recurrence, is an effective indicator of early fires in premises. At the same time, it was found that before the moment of ignition of the material, the state of the air environment is characterized by dynamic stability, which is described by an irregular and time-dependent random change in the recurrence of the states of the vector of current increments of the state of the air environment. The values of the indicated levels of recurrence of the state increments are determined by the probability levels of 0.67 and 0.1, respectively. The probability of recurrence of state increments of 0.67 is characteristic of a larger number of measured states. When the material is ignited, the dynamics of the probability of recurrence of state increments change abruptly. There is a transition from two to one level of recurrence, close to zero probability ‒ the loss of dynamic stability (in the region of count 250). Further dynamics are characterized by the appearance of separate random recurrent increments corresponding to the instability of the air environment in the premises. In the course of the experiment, it was found that the accuracy of predicting a fire by the proposed method ranges from 4.48 % to 12.79 %, which generally indicates its efficiency. The obtained data prove useful in the development of new systems that early warn of fire in premises, as well as in the modernization of existing systems and means of fire protection of premises

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Section: The Study Materials and Methodsmentioning

confidence: 99%

“…However, the classic RP method is not operational. Therefore, for the efficiency of the RP method, it is necessary to use its modification [15], defined as:…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

Section: The Study Materials and Methodsmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 2 more Smart Citations

Development of the method of operational forecasting of fire in the premises of objects under real conditions

Поспелов¹,

Andronov

Rybka

et al. 2021

EEJET

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“…For the algorithmic detection in real time of dangerous AP states, caused by a set of harmful substances, it is proposed to use a window measure of CRLR, similar to [25]. However, according to the proposed method, the measure from [25] is applied to representation (3) considering the restriction i>j, and enables a real-time identification of the current measure. Given this, an algorithm for determining the current CRLR window measure for the predefined size ɛ of the CRLR vicinity can be presented in the following form:…”

Section: Developing a Methods For Detecting Hazardous Atmospheric Condmentioning

confidence: 99%

Development of a method for detecting dangerous states of polluted atmospheric air based on the current recurrence of the combined risk

Поспелов¹,

Kovrehin²,

Rybka³

et al. 2020

EEJET

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Information and controlling system 49 tools and methods that allow the real-time detection of dangerous conditions of the contaminated atmosphere, as well as preventing their occurrence, in order to prevent disruption of regular human life activities, are of particular relevance. This is due to the need to employ these tools and methods in the information and control systems to monitor and manage security in urban areas experiencing AP, as well as in the elimination of accidents and emergencies related to AP.

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Investigation of the Conditions for the Use of Material with the Shape Memory Effect in the Sprinklers

Petukhova

Gornostal

Sherbak

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The expediency of using nitinol, which is a material with the shape memory effect (SME), as a sensitive element (SE) of a sprinkler has been substantiated. The influence of various parameters on the SE dimensions is analyzed and it is shown that the response time of an element made of a material with the shape memory effect depends on the dimensions of the fixing device (FD) (the diameter of the glass bulb and its thickness). Calculations have shown that the use of the material minimizes the response time of the sprinkler. It is shown that the response time depends on the voltage (or current) in the electrical network, on the size of the fixing device, the cross-sectional radius of the actuator and the critical temperature at which the actuator is triggered.

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A method for preventing the emergency resulting from fires in the premises through operative control over a gas medium

Abstract: 6 ger) and a corresponding object of its impact. The world statistics indicate that the annual number of anthropogenic emergencies exceeds the number of annual emergencies of natural and another character by more than three times [1].

Cited by 15 publications

References 26 publications

Development of the method of operational forecasting of fire in the premises of objects under real conditions

Development of the method of operational forecasting of fire in the premises of objects under real conditions

Development of a method for detecting dangerous states of polluted atmospheric air based on the current recurrence of the combined risk

Investigation of the Conditions for the Use of Material with the Shape Memory Effect in the Sprinklers

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