Dust Mask with a Pressure Drop Measuring Device

Cheberiachko, Serhii; Cheberiachko, Yu; Deriuhin, O. V.; Slavinskyi, Dmytro

doi:10.20535/radap.2019.78.43-51

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Аналіз літературних джерел показав доволі значну кількість публікацій з інноваційних розробок ЗІЗОД, що, вочевидь, зумовлене появою пандемії коронавірусу та активним розвитком різноманітних конструкцій ЗІЗОД [1]. Однак, незважаючи на новизну конструктивних рішень, у представлених моделях відсутні будь-які засоби контролю за їх ефективністю.…”

Section: аналіз останніх досліджень та публікаційunclassified

Individual Respiratory Protection Equipment: Innovations to Reduce the Risk of Occupational Diseases

Cheberyachko

Cheberiachko

Radchuk

et al. 2023

MEC

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Individual respiratory protective equipment (PPE) is the last barrier to protect workers when performing production tasks in harmful and dangerous working conditions. The article analyzes modern innovative designs of personal respiratory protective equipment, which increase the level of protection of users during their operation. The method of morphological analysis is applied. This method based on the selection of possible solutions for assessing the manufacturability of PPE models (if there is a system of criteria) and making a rational decision regarding the features of their application in production conditions. As a result, it was established that in order to ensure the appropriate duration of the protective action of gas and dust filters and to avoid both poisoning of workers due to the ingress of harmful aerosols into the sub-mask space of the filter respirator, and excessive physical exhaustion due to the increase in pressure drop above the standard substances, it is recommended to equip the filters with special indicators for determining air pollution and pressure drop values. It was determined that in order to increase the reliability of the protection of workers, it is necessary to equip filter respirators with the functions of operational control of breathing resistance, place a headrest to control the occurrence of possible gaps behind the obturation band when performing various production operations, and establish the real term of the protective effect of the filters. The practical value of the work is innovative solutions to improve the designs of existing filter respirators, which will allow control over technological parameters during operation. In particular, the density along the obturation strip and the magnitude of the tension force of the respirator headgear. Recommendations are also given for controlling the term of the protective action of gas filters, since determining the specified indicators based on the organoleptic abilities of the user is dangerous for health. Keywords: risk, means of individual protection of respiratory organs, filtering respirator.

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Section: аналіз останніх досліджень та публікаційunclassified

Individual Respiratory Protection Equipment: Innovations to Reduce the Risk of Occupational Diseases

Cheberyachko

Cheberiachko

Radchuk

et al. 2023

MEC

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“…The number of patents in March and April 2020 increased by about 100% compared with the period before the pandemic [ 19 ]. New designs improved the filtration efficiency and the wearing comfort [ 20 , 21 , 22 ]. However, we are not aware of the improved acoustic characteristics of the new masks despite the crucial role played by verbal communication in the life and work environment.…”

Section: Introductionmentioning

confidence: 99%

Speech Impaired by Half Masks Used for the Respiratory Tract Protection

Nowacki

Łakomy

Marczak

2022

IJERPH

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Filtering half masks belong to the group of personal protective equipment in the work environment. They protect the respiratory tract but may hinder breath and suppress speech. The present work is focused on the attenuation of sound by the half masks known as “filtering facepieces”, FFPs, of various construction and filtration efficiency. Rather than study the perception of speech by humans, we used a generator of white noise and artificial speech to obtain objective characteristics of the attenuation. The generator speaker was either covered by an FFP or remained uncovered while a class 1 meter measured sound pressure levels in 1/3 octave bands with center frequencies 100–20 kHz at distances from 1 to 5 m from the speaker. All five FFPs suppressed acoustic waves from the octave bands with center frequencies of 1 kHz and higher, i.e., in the frequency range responsible for 80% of the perceived speech intelligibility, particularly in the 2 kHz-octave band. FFPs of higher filtration efficiency stronger attenuated the sound. Moreover, the FFPs changed the voice timbre because the attenuation depended on the wave frequency. The two combined factors can impede speech intelligibility.

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Dust Mask with a Pressure Drop Measuring Device

Cited by 2 publications

References 5 publications

Individual Respiratory Protection Equipment: Innovations to Reduce the Risk of Occupational Diseases

Individual Respiratory Protection Equipment: Innovations to Reduce the Risk of Occupational Diseases

Speech Impaired by Half Masks Used for the Respiratory Tract Protection

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