https://sci.ldubgd.edu.ua/jspui/handle/123456789/11894 Tue, 07 Apr 2026 04:04:44 GMT 2026-04-07T04:04:44Z https://sci.ldubgd.edu.ua/jspui/handle/123456789/11897 Title: Використання системи “cobra compact” на практиці та в теорії Authors: Соломон, І.; Войтович, Д.П. Abstract: Нові зразки пожежно-технічного оснащення, які приходять на забезпечення в підрозділи ОРС ЦЗ необхідно вивчати та аналізувати для прийняття рішення стосовно широкого використання (переоснащення) на базі пожежно-рятувальної техніки. Thu, 30 Mar 2023 00:00:00 GMT https://sci.ldubgd.edu.ua/jspui/handle/123456789/11897 2023-03-30T00:00:00Z https://sci.ldubgd.edu.ua/jspui/handle/123456789/11896 Title: Substantiation of the necessity ANR ways to improve European guidelines for fire detection and fire alarm systems Authors: Borovykov, V.; Nizhnyk, V.; Slutska, O.; Skorobahatko, T.; Mykhailov, V.; Voytovych, D.; Sukach, R.; Velykyi, Y.; Parhomenko, V.-P.; Linchevsʹkyy, G. Abstract: Composition, purpose, and principal functions performed by fire detection and fire alarm systems are described. The incompleteness of the information provided in the European technical specifications for the planning, design, installation, commissioning, use and maintenance of such systems (CEN/TS 54-14:2018) is indicated. A number of other documents establishig requirements on these issues valid in Europe are considered and the need to improve and expand the requirements during the development of future European standards to supersede CEN/TS 54-14:2018 are substantiated. Additions to them are proposed, in particular, an improved block diagram of the sequence of execution of the processes related to fire detection and fire alarm systems as well as an algorithm of actions aimed at reducing the frequency (probability) of false alarms formed by fire detectors. A number of issues related to the protection of premises by installation of point fire detectors under ceilings of various configurations and in certain types of special fire-hazardous premises (facilities) are identified and a solution to their protection is proposed for introducing relevant information to appropriate regulations. The necessity of conducting appropriate desk and experimental studies in order to standardize the procedure for using multi-sensor fire detectors as well as video fire detectors is substantiated. A more detailed description of the procedure for using visual alarm devices to inform people who are in a hazardous area about the occurrence of a fire is offered. Sun, 01 Jan 2023 00:00:00 GMT https://sci.ldubgd.edu.ua/jspui/handle/123456789/11896 2023-01-01T00:00:00Z https://sci.ldubgd.edu.ua/jspui/handle/123456789/11895 Title: Assessing the effect of mechanical deformation of the panasonic ncr18650b lithium-ion power cell housing on its fire safety. Authors: Lazarenko, O.; Hembara, T.; Pospolitak, V.; Voytovych, D. Abstract: This paper considers the deformation properties of the body of the lithium-ion power cell (LIPC) Panasonic NCR18650B (LiNi0.8Co0.15Al0.05O2) exposed to the action of static load at various techniques of fixing the cell. Determining the properties of LIPCs under appropriate conditions makes it possible to fill the gap in existing studies, which will further ensure the safety of their use. Based on the results of experimental studies, the LIPC rigidity and temperature indicators were determined in accordance with the applied load. The most dangerous variant, from the point of view of fire danger, of applying a static load on the cell has been established. It was experimentally established that, on average, the Panasonic NCR18650B LIPC housing can withstand a load of about 80 kg·s/cm2 (or 7.84 MPa) without further ignition. An increase in pressure force in the range exceeding 85–90 kg·s/cm2 leads to an irreversible chain thermochemical reaction, which, within 2–3 seconds, leads to LIPC ignition. Compressing the LIPC evenly along its lateral surface showed the occurrence of combustion at the load on the cell equal to 150 kg·s/cm2. The average temperature of the cell during combustion caused by the deformation of the housing is 350–450 °C, and the maximum value is registered in the range of 580–680 °C. The mathematical model built on the basis of the mathematical theory of thin shells adequately describes the stressed-strained state of the cylindrical body of cells under the action of a force concentrated and distributed load. The estimation model is satisfactorily verified by experimental results, making it possible to improve the strength and rigidity of LIPC housing by choosing the appropriate steel grade for its body, the geometric dimensions, and the structural technique of its fastening Sun, 01 Jan 2023 00:00:00 GMT https://sci.ldubgd.edu.ua/jspui/handle/123456789/11895 2023-01-01T00:00:00Z