Optimization of Requirements to Constructive and Space-Planning Decisions When Designing Buildings and Constructions for Explosive Productions

Orlov, G. G.; Korolchenko, D. A.; Lyapin, Anton

doi:10.18322/pvb.2014.23.11.67-74.

Cited by 2 publications

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“…In conditions of intensive technological progress, production facilities and sites have emerged, in which hi-tech systems are used and many people are present, and this demanded the increase of reliability of systems, providing safety of people, also in conditions of fire hazard. Functioning of fire systems could only be provided with fireproof cables [9][10][11][12]. The appearance of new normative base also stimulated this process.…”

Section: Introductionmentioning

confidence: 99%

Operation of cable lines under fire conditions

2020

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Branched cable communications are carriers of fire load, they are tracks along which fire spreads in buildings and structures. Therefore, currently, fire safety of cables is one of the most important tasks of the cable industry. The spread of flames in vertical bunch wiring depends on the following factors: the amount of combustible material that is exposed to high temperatures, geometric shapes of cables and their mutual location when laying, the ignition temperature of gases emitted by cables, the volume of combustible gases emitted by cables at a certain elevated temperature, the room capacity and volume of air passing through the cable structure, cable devices. Analysis of regulatory documents revealed some key differences in the methodology of standards. It was found that the spread of fire is not only affected by the volume of laid cables, but also by their mutual placement in space. A direct correlation was found between the influence of the crosssection of the cable core and preservation of the cable line in case of fire. Parameters were determined for the preservation of serviceability under fire exposure in the case of bunch and in the case of single wiring. It has been determined that it is impossible to spread the results of fire tests in case of single wiring in accordance with GOST IEC 60331-21-2011 and in case of bunch wiring in accordance with GOST IEC 60332-3-22-2011 to the results of tests in accordance with GOST R 53316-2009 for the preservation of operability of cable lines. The parameters of fire resistance and operability of cable products under the influence of flame depending on the type of cables and the method of their installation have been determined.

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Section: Introductionmentioning

confidence: 99%

Operation of cable lines under fire conditions

2020

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Experimental method of evaluation of performance easily disposable construction

Nizhnyk¹,

Nikulin²,

Pozdeev³

et al. 2020

Geoteh. meh.

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This article presents the current state of affairs in cases of explosions in Ukraine and preventive measures to protect against them. The relevance of studies on the substantiation of the methodology for calculating the parameters of easily disposable structures for explosive and fire hazardous premises has been determined. The analysis of domestic and foreign regulatory documents for the design and installation of window openings in buildings for various purposes is carried out. The permissible values of the overpressure of the explosion, which does not cause significant damage to building structures and is safe for people, are considered. The subject of the study is the effect of the amount of gas on the design parameters of the research stand for the experimental evaluation of easily disposable structures. The purpose of this work is to substantiate the design and the main technical parameters of the research stand for assessing the performance of easily sisposable structures. The essence of the proposed research method is to create an excess pressure from the explosion of a mixture of propane-butane with air in the working volume and to study the effect of this excess pressure of the explosion on a prototype of an easily disposable structure. An experimental stand for studying the processes of the influence of the magnitude of the overpressure of an explosion in a confined space on the design parameters of easily disposable structures is simple in design, provides an imitation of a part of a building (structure) fragment and makes it possible to study the possibility of using certain building materials with different geometric parameters as easily disposable structures, which, in turn, allows the researcher to obtain more reliable data for analysis. The existing experimental methods for evaluating the parameters of easily disposable structures are analyzed. The dimensions of the research stand and the parameters of its enclosing structures, the critical values of the overpressure of the explosion, which the stand should create, and the minimum amount of gas, the combustion of which will provide the necessary overpressure of the explosion in the stand, are substantiated. A fundamentally new stand for the experimental evaluation of the parameters of easily disposable structures, a program and experimental research methodology have been developed.

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Optimization of Requirements to Constructive and Space-Planning Decisions When Designing Buildings and Constructions for Explosive Productions

Cited by 2 publications

References 0 publications

Operation of cable lines under fire conditions

Operation of cable lines under fire conditions

Experimental method of evaluation of performance easily disposable construction

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