All Russian Research Institute for Fire Protection

Balashikha, Russia

All Russian Research Institute for Fire Protection

Balashikha, Russia

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Shebeko A.Y.,All Russian Research Institute for Fire Protection | Shebeko Y.N.,All Russian Research Institute for Fire Protection | Golov N.V.,All Russian Research Institute for Fire Protection | Zuban A.V.,All Russian Research Institute for Fire Protection | Yurkin A.A.,RAS Lebedev Physical Institute
Journal of Loss Prevention in the Process Industries | Year: 2017

Because fluorinated hydrocarbons are now widely used for fire extinguishing, it is interesting to use them for explosion prevention for oxidizers with different oxygen contents. An experimental investigation of the influence of the oxygen content of the oxidizer (mixture of O2 and N2) on the characteristics of combustion of nearly stoichiometric mixtures of flammable gas (hydrogen, methane) – oxidizer – fluorinated hydrocarbon (trifluoromethane CHF3, pentafluoroethane C2HF5, perfluorobutane C4F10) was carried out. The oxygen content of the oxidizer was 15, 20.6 (air) and 25% (vol.). The dependences of the maximum explosion pressure ΔPmax, the maximum pressure rise rate upon explosion (dP/dt)max and the laminar burning velocity Sui on the concentrations of the fluorinated agents for various oxygen contents were determined using standard methodologies. It was found that influence of CHF3 on ΔPmax is rather weak, while C2HF5 and C4F10 are much more effective for the reduction of the maximum explosion pressure. For all investigated fluorinated agents, the influence of the maximum pressure rise rate on the explosion and the laminar burning velocity was very strong. A qualitative explanation of the obtained results is presented. © 2017 Elsevier Ltd


Aynbinder G.I.,Association of Mining Expertise Centers | Poletaev N.L.,All Russian Research Institute for Fire Protection | Sosnin V.A.,Kristall | Pechurina D.S.,Association of Mining Expertise Centers
Gornyi Zhurnal | Year: 2017

Russian mining and processing works prepare ore for extraction by drilling and blasting using granular explosives based on ammonium nitrate. Persistent accidents at such mineral mining and processing works are reflective of insufficient attention to the process safety management. On the other hand, one of the frequent causes of accidents is identified as interaction of chemically aggressive components of ore. The authors have revealed the phenomenon of self-heating of explosive charges made on the basis of ammonium nitrate in sulfide ore. The test procedure is developed with the use of steel ampoules, which allows assessment of chemical stability during modeling real conditions of joint use of hazardous explosive mixtures and wet ore. It is concluded on the need to add an inhibitor in compositions of the explosives in use for their safe placement in shotholes.


Shebeko A.Yu.,All Russian Research Institute for Fire Protection | Shebeko Yu.N.,All Russian Research Institute for Fire Protection | Zuban' A.V.,All Russian Research Institute for Fire Protection | Navtsenya V.Yu.,All Russian Research Institute for Fire Protection | Azatyan V.V.,RAS Institute of Structural Macrokinetics and Materials Science
Russian Journal of Physical Chemistry B | Year: 2014

The flammability limits for combustible gas (methane, hydrogen)-nitrous oxide-fluorinated hydrocarbon (trifluoromethane CHF3, pentafluoroethane C2HF5, perfluorobutane C 4F10) mixtures are experimentally determined. The upper and lower flammability limits turned out to be, respectively, significantly higher and lower as compared to those characteristic of the combustion in air. The compositions of the mixtures at the peaks of the flammability curves are characterized by lower values of the fuel equivalence ratio φ (in most cases, φ < 0.1) as compared to the combustion in air and in a 25 vol % oxygen-nitrogen medium (typically φ > 0.5). It was established that the inhibiting concentrations of fluorinated hydrocarbons for the combustion of methane and hydrogen in nitrous oxide are similar, in contrast to the combustion in oxygen- nitrogen oxidative media. A qualitative interpretation of the results is given. © 2014 Pleiades Publishing, Ltd.


Azatyan V.V.,RAS Institute of Structural Macrokinetics and Materials Science | Bolod'Yan I.A.,All Russian Research Institute for Fire Protection | Navtsenya V.Yu.,All Russian Research Institute for Fire Protection | Shebeko A.Yu.,All Russian Research Institute for Fire Protection | Shebeko Yu.N.,All Russian Research Institute for Fire Protection
Kinetics and Catalysis | Year: 2011

Kinetic aspects of controlling ignition and flame propagation parameters in the gas phase by chemical methods are considered. The efficiency of the chemical methods is due to the branched chain character of gas-phase combustion reactions and the dominant role of the competition between chain branching and chain termination in these processes. © 2011 Pleiades Publishing, Ltd.


Biryulin Yu.S.,All Russian Research Institute for Fire Protection | Borisov A.A.,RAS Semenov Institute of Chemical Physics | Mailkov A.E.,RAS Semenov Institute of Chemical Physics | Troshin K.Ya.,RAS Semenov Institute of Chemical Physics | Khomik S.V.,RAS Semenov Institute of Chemical Physics
Russian Journal of Physical Chemistry B | Year: 2014

The minimum energies required to initiate the combustion of gaseous tetrafluoroerthy1ene (TFE) and mixtures thereof with nitrogen, argon, and helium at various initial pressures and temperatures are determined. Flame transition from the gas to the liquid phase of TFE is investigated. Liquid TFE is demonstrated to be virtually nondetonable. The fuel-lean flammability and detonability limits of TFE-air mixtures under normal conditions are demonstrated to be identical, 12.2 vol %. © 2014 Pleiades Publishing, Ltd.

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