Cheberyachko S.I., Cheberyachko Yu.I., Stolbchenko O.V., Kravchenko Yu. A. Definition of the respirator protection coefficient by the thermograph of the bottom strip

Details

Parent Category: Geo-Technical Mechanics, 2018

Category: Geo-Technical Mechanics, 2018, Issue 142

Geoteh. meh. 2018, 142, 141-147

DOI: https://doi.org/10.15407/geotm2018.142.141

DEFINITION OF THE RESPIRATOR PROTECTION COEFFICIENT BY THE THERMOGRAPH OF THE BOTTOM STRIP

Cheberyachko S.I., Cheberyachko Yu.I., Stolbchenko O.V., Kravchenko Yu.A.

Authors:

Cheberyachko S.I., Doctor of Technical Sciences (D.Sc) Professor  (NTU «DP»)

Cheberyachko Yu.I., Candidate of Technical Sciences (Ph.D) Associate Professor (NTU «DP»)

Stolbchenko O.V., Candidate of Technical Sciences (Ph.D) Associate Professor (NTU «DP»)

Kravchenko Yu.A., Master of Science M.S (Tech.) (NTU «DP»)

UDC 665.66:614.89

Language: Ukrainian

Annotation.

The perfection of structures PRE, in particular respirators, is evaluated including the density of adherence of the crescent mask to the face in the lane by defining the places for "picking up" harmful substances in the form of aerosols (in the submersible space.) The more perfect way to visualize the places of penetration of aerosol in the roundabout is the use of the thermal imager, which by thermogram - reception of a thermogram of the surface of the strip of the illumination, indicates the places of penetration of the aerosol in the roundabout, according to the intensity of the thermal radiation of the surface and in the infrared range and the reflection of the thermal field of the obturator surface on the display of the thermal imager in the form of a color image, where the place of penetration of the aerosol into the submicrospace through the gap between the obturator and the face, has a personal coloring, in the article an express method for determining the coefficient of half masks is developed. the surface of the half mask obturator, the height of the unevenness on the obturator, as well as the actual area of the adjoining half masks is proposed to be determined by processing the thermogram in the program Mathlab. In the article, the developed express method for determining coefficient of half mask protection is presented. Determination of coefficient of half mask protection was based on intensity of the surface thermal radiation the after thermogram is processed by the program Mathlab. This express method allows determining areas with gapping in the obturation strip and conformity of the filter half mask with anthropometric parameters of the worker’s face at individual fitting. It is established that tightness if half mask fitting can be calculated as ratio of designed area of the obturator to real area determined by thermal color appeared after half masks is put on the face of the worker. Practical importance is that effectiveness of protective foam of the half-masks is determined directly in the workplace without any laboratory equipment.

Keywords:

anti-dust respirator, pressure drop, breathing resistance, respiratory rate, breathing depth, load.

References:

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About the authors:

Cheberyachko Sergiy Ivanovich,Doctor of Technical Sciences (D.Sc), Professor of the AOP Department, National Technical University "Dniprovskaya politechnika"(NTU «DP»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Cheberyachko Yuriy Ivanovich, Candidate of Technical Sciences (Ph.D), Associate Professor of AOP Department, National Technical University "Dniprovska Politechnika", "(NTU «DP»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Stolbchenko Olena Volodymyrivna, Candidate of Technical Sciences (Ph.D), Associate Professor of AOP Department, National Technical University "Dniprovska Politechnika", "(NTU «DP»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Kravchenko Yuliya Oleksandrivna, Master of Science M.S (Tech.), National Technical University "Dniprovska Politechnika", "(NTU «DP»), Dnipro, Ukraine This email address is being protected from spambots. You need JavaScript enabled to view it. .

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