Experimental determination of fire hazard indicators of technical oils in small-scale installations

Introduction. Lack of properties of modern technical oils does not allow calculating the time of blocking of evacua­tion routes in the premises where they are located. It can lead to serious underestimation of fire danger of objects. Therefore, the task of determining the fire hazard properties of modern technical oils is urgent.

Goals and objectives. The purpose of the work is the experimental determination of fire-hazard indicators of modern technical oils used at hydraulic plants and Gazpromneft enterprises.

In order to achieve the goal, the experimental research of samples of the above mentioned oils was carried out to determine their fire-hazard characteristics.

Methods. The experimental method of studying of fire hazardous properties of substances and materials in a small-scale experimental unit, as well as the standard test method for determining the smoke formation coefficient in accordance with GOST 12.1.044–89 was used. The obtained results were analyzed.

Results and discussion. Technical oils of the “Mobil DTE 10 EXCEL 68”, “Mobil DTE OIL PM 150” and “Gazpromneft PM-220” brands were tested.

Experimental dependences of specific mass burnout rate, specific coefficients of formation of carbon monoxide and dioxide, cyanogenic hydrogen, specific coefficient of oxygen consumption, as well as smoke generating ability on time from the beginning of the tests were obtained.

It was found that the initial mass of the sample significantly affects the value of mass burnout rate.

The obtained characteristics of the oil combustion process were compared with the data given in the existing database of combustible load. It is shown that the mass burnout rate of the tested oils is significantly less than corresponding value for the oils given in the database.

Conclusion. Specific coefficients of hydrogen cyanide formation obtained for the first time, as well as other experimental data, can be used for calculation of the time of blocking of evacuation routes in production premises where technical oils are located.

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