Experimental Evaluation the Effectiveness of Water Mist Fire Extinguishing Systems at Oil and Gas Industry

Nyashina, Galina S.; Medvedev, V. V.; Vysokomornaya, O. V.

doi:10.1051/epjconf/201611001047

Cited by 1 publication

(5 citation statements)

References 8 publications

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“…The plot analysis of Fig. 4 shows that the relative error as a result of replacing the solution of the system of equations (12,15,21) with approximate expressions (24, 25) reaches 18 %.…”

Section: Fig 3 Radius Change Of the Crude Oil Spill Over Timementioning

confidence: 99%

“…The obtained expressions can be useful for the development of fire preplans at the oil extraction and refining facilities, design of process equipment fire protection systems, outlining of zones for safe positioning of the equipment and personnel, as well as for the design of automatic fire extinguishing systems [14]. 1 is the solution of the system of equations (12,15,21); 2 is the dependence (24-25) Методика. Побудовано рівняння балансу сил, що впливають на розтікання рідини.…”

Section: Fig 3 Radius Change Of the Crude Oil Spill Over Timementioning

confidence: 99%

“…3 shows that after an instanta neous spill of 60 liters of crude oil, the maximum radius of the spill is reached in about 20 seconds. The relative error at re placing the solution of system (12,15,17) with the approxi mate expression (20) does not exceed 4 %. continuous spill of a fuel with a volumetric flow rate v(t)…”

mentioning

confidence: 92%

“…Evaporation of the water mist droplets during their move ment in a hightemperature environment of the combustion plume of petroleum products was experimentally investigated in [12]. In the experiment [13], the extinguishing of fuel oil in a container with a diameter of 35 cm by pulverizing water at a rate of 25 l/min and the mechanisms of extinction with water mist were considered: cooling of the gas medium and reducing concentration of oxygen and of the combustible liquid vapor as the droplets evaporate in the combustion zone; cooling of the fuel surface as the droplets reach its surface.…”

mentioning

confidence: 99%

“…where V total (t) is the total volume of liquid spilled at the time t; w b is the linear burnout rate of the liquid. The equations (12,15,16) with the initial condition (13) form a system of nonlinear differential equations of the second order which describes the combustion of the liquid spreading over a horizontal surface.…”

mentioning

confidence: 99%

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Modeling of spilling and extinguishing of burning fuel on horizontal surface

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Purpose. To construct a model of extinguishing a spill fire spreading on a nonsmooth horizontal surface using water mist. Methodology. A force balance equation for the forces influencing the spilled liquid spread has been worked out. The equation takes into account the change in the mass of the spilled liquid due to its burnout and possible inflow in the case of a continuous spill. Filling of the surface irregularities in the spill area has also been taken into account. There has been worked out a thermal balance equation for the fuel surface under sprayed water mist, based on the assumption that the water droplets completely evapo rate before they reach the surface of the burning fuel. Findings. The dynamics has been obtained for the radius change of the fuel spill for the spread and burnout on a nonsmooth horizontal surface under the assumption of a circular shape of the spill. Relation has been determined between the time required to suppress a spill fire with water mist and the intensity of water feed. Originality. The scientific originality consists in taking into account the surface irregularities and fuel burnout during the spill spread, as well as determining the time required to suppress a spill fire with water mist, depending on the intensity of the water feed. Practical value. The proposed model for the fuel spill spread and fire extinguishing can serve as the basis for the design of a fire protection system for the processing equipment and, in particular, of an automatic water mist fire extinguishing system, at oil ex tracting and oil refining facilities.

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“…The plot analysis of Fig. 4 shows that the relative error as a result of replacing the solution of the system of equations (12,15,21) with approximate expressions (24, 25) reaches 18 %.…”

Section: Fig 3 Radius Change Of the Crude Oil Spill Over Timementioning

confidence: 99%