Study of fire hazards in electrical connections of various types

 

Kalchenko Yaroslav

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-3482-0782

 

Oliinyk Volodymyr

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-5193-1775

 

Borsuk Olena

National University of Civil Protection of Ukraine

https://orcid.org/0000-0001-5759-4506

 

Kostyrka Olesia

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-3225-6604

 

Kirichenko Ilya

National University of Civil Protection of Ukraine

https://orcid.org/0009-0006-2579-9017

 

DOI: https://doi.org/10.52363/2524-0226-2026-43-13

 

Keywords: lamp temperature, overvoltage, undervoltage, fire hazard

 

Аnnotation

 

Studies have been conducted to determine the temperature of electric lamps of various types in emergency modes of operation of power grids, namely overvoltage. Graphs of the dependence of the temperature of the bulb of incandescent lamps, arc mercury lamps and LED lamps on the voltage applied to them. Mathematical models of the value of the heating temperature of the bulb of the electric incandescent lamp, the arc mercury lamp and the LED lamp are obtained depending on the time. It is determined that the temperature of the bulb of the incandescent electric lamp increases exponentially and stabilizes after about 300 seconds. The temperature of an arc mercury lamp also varies exponentially, but, compared to an incandescent lamp, it is not so fast, but stabilizes after about 600 seconds. It is determined that in emergency modes of operation, the temperature of incandescent lamps and arc mercury lamps may exceed the normative values of temperature groups, as a result of which, when used in environments where explosive gases or vapors are present, they can become a source of ignition and lead to explosion or ignition of these substances. It is determined that the temperature of the LED lamp changes according to the linear law and after 300 seconds stops growing. Temperature dependencies of different elements of the LED lamp are built depending on the electric voltage applied to it. It was found that the driver, namely the power control chip, heats up most when the LED electric lamp is operating. It is determined that when the electric voltage decreases, the power control chip heats up more, but not significantly. It was found that the LED lamp is the best from the point of view of fire safety, since it has the lowest temperature, and also the change in the voltage of the electrical network reacts the least, which is explained by its design and principle of operation.

 

References

 

  1. Analytical report on fires and their consequences in Ukraine for 10 months of 2024. Available at: https://dsns.gov.ua/upload/2/2/8/5/6/0/6/analitychna-dovidka-pro-pojeji-102024-ost.pdf
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  4. Deng, J., Lin, Q., Li, Y., Wang, C., Wang, H., Man, P. (2023). Effect of overload current values on the fire characteristics of polyethylene (PE) copper wires. Journal of Thermal Analysis and Calorimetry, 148, 11695–11705. Available at: https://link.springer.com/article/10.1007/s10973-023-12522-5
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Received by the editorial board: 10.03.2026

Accepted for publication: 13.04.2026

Date of publication (release): 31.05.2026

Integration of digital technologies and geographic information systems into humanitarian demining processes

 

Didovets Iurii

National University of Civil Protection of Ukraine

https://orcid.org/0009-0003-2757-7299

 

Kozhemiaka Oleksiy

National University of Civil Protection of Ukraine

https://orcid.org/0009-0008-1064-9213

 

Lazorenko Oleksiy

National University of Civil Protection of Ukraine

https://orcid.org/0009-0005-3569-2208

 

Mykhailovska Yuliia

National University of Civil Protection of Ukraine

https://orcid.org/0000-0003-1090-5033

 

DOI: https://doi.org/10.52363/2524-0226-2026-43-12

 

Keywords: digital technologies, geographic information systems, humanitarian demining, spa-tial analysis, unmanned platform

 

Аnnotation

 

The article substantiates a scientific and applied approach to integrating digital technologies and geographic information systems into humanitarian demining processes. It shows that moving from fragmented use of individual digital tools to a coherent digital geospatial ecosystem significantly improves decision quality during non-technical survey, technical survey, clearance, quality assurance and land handover. The key components of such integration are identified as standardized digital data, geospatial models, satellite and aerial imagery, unmanned platforms, mobile field data collection tools, analytical dashboards, spatial prioritization algorithms and decision-support systems. A mathe-matical framework is proposed for assessing the digital-geospatial maturity of an operator, prioritizing hazardous areas and forecasting operational productivity depending on data quality, information la-tency, contamination uncertainty and terrain accessibility. It is argued that the practical effect of in-tegration lies in reducing the time needed for field-data processing, increasing the precision of haz-ardous-area boundaries, decreasing duplicated routes, improving resource allocation and strengthening reporting transparency. The scientific novelty lies in the development of an integrated model combin-ing a digital-geospatial maturity coefficient, a data –quality index, a spatial-priority index and an ex-pected operational-efficiency function. The practical significance of the results lies in the possibility of applying the proposed provisions to humanitarian demining management, personnel training, digi-tal architecture design and information-management improvement under conditions of large-scale contamination by explosive ordnance in Ukraine. The model is adaptable to national and operator-level workflows.

 

References

 

  1. International Mine Action Standards. Information management in mine action (IMAS 05.10).
  2. International Mine Action Standards. Land release (IMAS 07.11).
  3. International Mine Action Standards. Non –technical survey (IMAS 08.10).
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  5. International Mine Action Standards. Clearance requirements (IMAS 09.10).
  6. Geneva International Centre for Humanitarian Demining. Information man-agement in mine action.
  7. Geneva International Centre for Humanitarian Demining. Better information for better results: The impact of IMSMA Core.
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  9. ISO 31000:2018 Risk management — Guidelines. Geneva: International Or-ganization for Standardization, 2018.
  10. Saliba, A., Sulis, W., Oueidat, M. (2024). Bridging human expertise with machine learning and GIS for mine type prediction and classification. ISPRS Interna-tional Journal of Geo –Information, 13, 7, 259. doi: 10.3390/ijgi13070259
  11. Camacho-Sanchez, C., Caro, F., Martinez-de-Dios, J. R. (2023). Humani-tarian demining for the clearance of landmine –contaminated areas: a decision sup-port model for search planning. Socio-Economic Planning Sciences. doi: 10.1016/j.seps.2023.101611
  12. Pro protyminnu diialnist v Ukraini : Zakon Ukrainy vid 06.12.2018 № 2642 –VIII // Baza danykh «Zakonodavstvo Ukrainy» / Verkhovna Rada Ukrainy.
  13. Standartna operatyvna protsedura 08.20/DSNS. Poriadok provedennia orhanamy ta pidrozdilamy tsyvilnoho zakhystu tekhnichnoho obstezhennia terytorii.
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  18. Saliba, A., Claramunt, C., Zaki, C., Tout, K. (2024). Bridging Human Ex-pertise with Machine Learning and GIS for Mine Type Prediction and Classification. ISPRS International Journal of Geo-Information, 13(7), 259. doi: 10.3390/ijgi13070259
  19. Hutsul, T., Lishchuk, I. M., Hladii, R. M., Dmukh, P. P. (2024). Review of approaches to the use of unmanned aerial vehicles, remote sensing and geographic information systems in humanitarian demining: Ukrainian case. Heliyon, 10(7), e29142. doi: 10.1016/j.heliyon.2024.e29142
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Received by the editorial board: 10.03.2026

Accepted for publication: 13.04.2026

Date of publication (release): 31.05.2026

 

Modeling the operation of a heat fire detector with the dependence of magnetic induction on temperature.

 

Durieiev Viacheslav

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-7981-6779

 

Oliinyk Volodymyr

National University of Civil Protection of Ukraine

http://orcid.org/0000-0002-5193-1775

 

Bondarenko Serhiy

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-4687-1763

 

Antoshkin Oleksiy

National University of Civil Protection of Ukraine

https://orcid.org/0000-0003-2481-2030

 

Yakukhin Serhiy

National University of Civil Protection of Ukraine

https://orcid.org/0009-0001-0224-0513

 

Derevyanko Oleksandr

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-3602-2055

 

DOI: https://doi.org/10.52363/2524-0226-2026-43-10

 

Keywords: detector, sensitive element, mathematical model, ferrite, time constant, operating parameters, inertia

 

Аnnotation

 

A mathematical model of a fire detector based on the principle of magnetic induction depend-ence on temperature is presented. The dynamics equations of the detector are given, taking into ac-count the magnetic properties of the ferrite contacts of the sensitive element, the conditions of heat exchange with the environment, the parameters of magnetization, magnetic induction, the type and structure of the material of the contacts that affect the operation of the detector. A characteristic fea-ture of the mathematical model of the detector is the comprehensive consideration of the influence of the magnetic properties and characteristics of the ferrite material of the contacts on the detector oper-ation parameters. The dynamics equations obtained from the mathematical model of the detector de-scribe its operation in transient modes and represent first-order inertial links written in relative varia-bles with constant coefficients. Magnetic induction and magnetization of contacts are represented by relative variables, inertia and gain are taken into account by constant values. Dynamics equations al-low for a convenient study of the operation of a fire detector and to perform parametric calculations of its triggering parameters, taking into account the dependence of the magnetic properties of the contacts of the sensitive element on the temperature and structure of the ferrite material of the con-tacts. The obtained results of calculations of the detector triggering parameters confirm the correct-ness of the adopted hypothesis. The difference in the temperature and triggering time obtained in the calculations does not exceed 5 % of the experimental data. As a limitation of the use of the presented model, the use in calculations of the specified parameters of the magnetic field of a permanent mag-net, the characteristics of the substance of ferrite contacts, the determined dependences of the mag-netic induction of contacts on temperature and conditions of convective heat exchange of the detec-tor with the surrounding environment is used. As constructive ways to improve the detector’s operat-ing parameters, recommendations are given on the structure of the sensitive element, namely, in-creasing the total area of thermal contact to improve the conditions of convection heat transfer, re-ducing the mass of the sensitive element contacts to reduce the inertia, time and temperature of de-tector operation.

 

References

 

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Received by the editorial board: 10.03.2026

Accepted for publication: 13.04.2026

Date of publication (release): 31.05.2026

 

Risk management during the detection and disposal of explosive ordnance

 

Hubenko Andrii

National University of Civil Protection of Ukraine

https://orcid.org/0009-0007-3647-3909

 

Zolochevskyi Denus

National University of Civil Protection of Ukraine

https://orcid.org/0009-0000-3076-5272

 

Diadchenko Arsenii

Military Institute of Armored Forces of

National Technical University “Kharkiv Polytechnic Institute”

https://orcid.org/0009-0007-0518-3562

 

Korniienko Ruslan

National University of Civil Protection of Ukraine

https://orcid.org/0000-0003-4854-283X

 

DOI: https://doi.org/10.52363/2524-0226-2026-43-11

 

Keywords: risk management, detection, identification of explosive objects, explosive objects, disposal

 

Аnnotation

 

Substantiates a scientific and applied approach to risk management in the course of explosive ordnance detection and destruction (disposal) operations within Mine Action. It is shown that the safety of such operations is determined not only by compliance with established procedures, but also by the quality of explosive ordnance identification, the completeness of baseline information, the complexity of the operational environment, the technical reliability of detection and destruction (dis-posal) equipment, environmental conditions, the human factor, and the level of managerial coordina-tion. An integrated risk assessment model is proposed, based on weighting the key influencing fac-tors, normalizing their values, and introducing a scenario coefficient that takes into account the spe-cific characteristics of the task location. A scale for interpreting risk levels, a calculation example, and the results of the model sensitivity analysis are presented. It is established that the greatest influence on the final risk level is exerted by the probability of a hazardous event, the severity of possible con-sequences, the complexity of the operational environment, technical reliability, and the human fac-tor. It is demonstrated that the application of a formalized risk management model makes it possible to improve the validity of managerial decisions, enhance work planning, reduce the likelihood of per-sonnel errors, and strengthen task execution safety. The practical significance of the obtained results lies in the possibility of using the proposed approach in the training of mine action specialists, the organization of operations, and the development of departmental risk assessment procedures. The proposed approach may be adapted to various operational scenarios, including open terrain, built-up areas, locations near critical infrastructure facilities, and conditions of restricted access, which ensures its versatility for SES of Ukraine EOD units. This expands the possibilities for its application in both training and operational activities.

 

References

 

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  11. Camacho-Sanchez, C., Yie-Pinedo, R., Galindo, G. (2023). Humanitarian demining for the clearance of landmine-contaminated areas: A decision support mod-el for search planning. Socio-Economic Planning Sciences, 88, 101611. doi: 10.1016/j.seps.2023.101611
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Received by the editorial board: 10.03.2026

Accepted for publication: 13.04.2026

Date of publication (release): 31.05.2026

Features of ensuring safe operation of robots for fire extinguishing

 

Tsymbal Bohdan

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-2317-3428

 

Rybka Evgeniy

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-5396-5151

 

Holoborodko Evgeniy

National University of Civil Protection of Ukraine

https://orcid.org/0009-0005-7915-8058

 

Pohrebniak Volodymyr

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-7735-3408

 

Petryshchev Artem

National University «Zaporizhzhya Polytechnic»

https://orcid.org/0000-0003-2631-1723

 

DOI: https://doi.org/10.52363/2524-0226-2026-43-9

 

Keywords: safe operation, occupational risks, emergency and rescue operations, equipment failures

 

Аnnotation

 

The theoretical and applied aspects of ensuring the safe operation of robotic systems for fire extinguishing in complex, dynamic, and hazardous environments are studied. The relevance of implementing robotic technologies in fire response practice is substantiated, taking into account the need to reduce occupational risks and improve the efficiency of emergency and rescue operations. A generalized analysis of the current state of development of robotic fire extinguishing systems is carried out, which made it possible to determine their main functional capabilities, technical characteristics, and advantages compared to traditional means. It is established that, despite significant technological potential, the use of such systems is accompanied by a number of limitations, including insufficient adaptability to high temperatures and smoke conditions, limited autonomy, instability of communication channels, and difficulties in integration into existing organizational response structures. The study identifies the main hazardous factors and risks associated with the operation of robotic systems, including equipment failures, software malfunctions, sensor inaccuracies, the impact of aggressive environments, as well as the human factor, in particular operator errors under conditions of limited time and increased psycho-emotional stress. A methodology for assessing occupational risks is proposed, based on a systematic approach and involving sequential hazard identification, analysis of conditions of occurrence, determination of the probability of realization and severity of consequences, followed by risk ranking according to the level of criticality. The expediency of applying an integrated approach to ensuring the safe operation of robotic systems is substantiated, combining technical, organizational, and legal measures. It is established that the implementation of the proposed approaches contributes to increasing the efficiency of functioning of robotic systems.

 

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Received by the editorial board: 10.03.2026

Accepted for publication: 13.04.2026

Date of publication (release): 31.05.2026