Comparison of Protection Factors for Selected Medical, Industrial and           Military Masks

Personal protection against infectious or toxic aerosols is a growing area of concern among many different occupational groups. Selection of appropriate respiratory protection should be based upon the level of risk present and the degree of protection afforded by the different types of protective masks available. In this study we have determined the relative protection factors for various commercial and military respiratory protective devices when challenged with a polydispersed submicron to micron sized particulate aerosol.

Download Full-text

On the Problem of Filter Respirator Selection

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.25.136 ◽

2017 ◽

Vol 25 ◽

pp. 136-142

Author(s):

Ivan Cheberiachko ◽

Yuriy Cheberiachko ◽

Andrii Yavorskyi

Keyword(s):

Working Conditions ◽

Respiratory Protection ◽

European Standard ◽

Protective Efficiency ◽

Operational Conditions ◽

Protective Devices ◽

Respiratory Protective Devices ◽

The Usa ◽

Selection Of

Requirements concerning the selection of filtering respirators according to ЕN 529:2006 European standard have been analyzed; the requirements have been compared with the national recommendations given in the corresponding ДНАОП 0.00-1.04-07 normative act on labour protection. It has been determined that the protective efficiency of the respiratory protective devices is characterized by three various parameters characterizing the coefficient of protection – two of them are determined at the working place. However, adequate selection of a filtering respirator is tested in terms of nominal coefficient of protection being determined in a laboratory. Such an approach may result in certain errors due to the set of various factors being available under working conditions. It is proposed to use the value of the expected coefficient of protection determined in the USA being equal to 10 MAC while selecting a filtering respirator. Recommendations are given as for the improvement of respiratory protection of a worker under operational conditions.

Download Full-text

The use of the respiratory protective devices by the population during the COVID-19 pandemic

Health Care of the Russian Federation ◽

10.47470/0044-197x-2021-65-6-527-532 ◽

2021 ◽

Vol 65 (6) ◽

pp. 527-532

Author(s):

Ekaterina A. Shashina ◽

Denis V. Shcherbakov ◽

Tatiana S. Isiutina-Fedotkova ◽

Valentina V. Makarova ◽

Vitaly A. Sukhov ◽

...

Keyword(s):

Face Mask ◽

Grocery Stores ◽

Protective Equipment ◽

Respiratory Protection ◽

Protective Devices ◽

Different Types ◽

Respiratory Protective Devices ◽

The Face ◽

Almost All ◽

Spread Of Infection

Introduction. Wearing a face mask is an important measure against spread of infection during the COVID-19 pandemic. The purpose of the study was to analyze various aspects of the face masks use by the population during the pandemic. The questioner was used. Results. Almost all respondents (96.4%) wore respiratory protective devices during the pandemic; 91.4% respondents worn face masks visiting grocery stores, pharmacies and medical organizations; 64.0% - visiting non-food trade facilities; 76.9% - travelling by surface transport, and 76.1% - being on the subway. Different types of face masks were used, 93.3% of respondents used disposable medical mask, 25.4% - reusable cloth masks. However, only 44.8% of respondents indicated that their protective equipment was made of non-woven material; 26.1% did not know how many layers their protective equipment contained; about a third of respondents (20.1% - 30.21%) were not able to assess the effectiveness of different types of respiratory protection. A third of the respondents (33.6%) wore a disposable medical mask for 2 hours, 35.2% - more than 2 hours in one day, 28.0% - for several days. Conclusions. Most of the respondents wore the face mask. Disposable medical masks were most commonly used. Requirements for the duration of wearing of face masks were met by about third of the respondents, for the handling - half of the respondents. Spontaneous choice of face mask by respondents confirms the importance of the development of hygiene guideline for choosing the most effective respiratory protection.

Download Full-text

On the selection of respiratory protective devices for handling of highly toxic contaminants

Sangyo Igaku ◽

10.1539/joh1959.12.6_283_1 ◽

1970 ◽

Vol 12 (6) ◽

pp. 283

Author(s):

T. Inoue ◽

Y. Hariyama ◽

N. Kubota ◽

I. Soya ◽

K. Yoshino

Keyword(s):

Protective Devices ◽

Respiratory Protective Devices ◽

Selection Of

Download Full-text

The association between risk perception and knowledge with the behavior of using respiratory protection devices in the four National Oil Products Distribution Company

Occupational Medicine ◽

10.18502/tkj.v13i2.7041 ◽

2021 ◽

Author(s):

M Javadi ◽

Z Sharifi ◽

S Rastaghi ◽

AM Nezam Doust ◽

F Abareshi

Keyword(s):

Risk Perception ◽

Work Experience ◽

Oil Products ◽

Individual Risk ◽

Clear Understanding ◽

Respiratory Protection ◽

Protective Devices ◽

Respiratory Protective Devices ◽

Distribution Company ◽

The Relationship

Introduction: Having a clear understanding of the relationship between risk perception, knowledge, and protective behaviors could play a significant role in occupational risk management. This study aimed to survey the relationship between risk perception and knowledge on the behavior of using respiratory protection equipment in the four National Oil Products Distribution Company. Materials and Methods: In this descriptive cross-sectional study conducted in 2018, 52 workers from the loading and quality control departments of 4 national companies distributing petroleum products in Sabzevar, Bojnourd, Torbat Heydariyeh, and Shahroud participated. Data were collected through a researcher-made questionnaire whose validity and reliability were assessed (CVI: 0.9 and CVR: 0.92 and Cronbach's alpha coefficient was determined to be 0.73), and data were analyzed using SPSS19 software, and descriptive statistics and linear regression were analyzed. Results: More than half of the participants, who were exposed to the chemicals, use RPDs (Respiratory Protective Devices) all the time and when they are exposed to chemicals. While 75% of them reported using RPDs (Respiratory Protective Devices), reduces the quality of their work. In this study, there was not any significant relationship between RPDs behavior with knowledge and risk perception (P > 0.05). However, the association between work experience and RPDs was negatively significant (p= 0.009). Conclusion: The results of this study suggested that only education and knowledge could not promote individual risk perception, improving protective behavior, therefore other barriers such as uncomfortably of RPDs, or their interference with the worker should be considered. To achieve this goal, the safety and health officials of the companies must pay attention to its quality in addition to the correct choice of these devices.

Download Full-text

Selected Respiratory Protective Devices: Respirators and Significance of Some Markings

Sustainability ◽

10.3390/su13094988 ◽

2021 ◽

Vol 13 (9) ◽

pp. 4988

Author(s):

Pavel Otrisal ◽

Constantin Bungau ◽

Vladimír Obsel ◽

Zdeněk Melicharik ◽

Gabriela Tont

Keyword(s):

European Union ◽

Public Procurement ◽

New Products ◽

Protective Equipment ◽

Respiratory Protection ◽

Shopping Centers ◽

The European Union ◽

Protective Devices ◽

Respiratory Protective Devices ◽

Full Knowledge

Currently, setting the obligation to use respiratory protective equipment with a level of protection of at least FFP2 in public transport and commercial and shopping centers are considered within the European Union. Many new products appeared on the European market within these specifications, and many symbols have been used. The paper deals with the meaning of selected respiratory protection based on respirators symbols and markings (which appeared massively, especially after the pandemic situation in the spring of 2020), these symbols not being uniformly understood and well communicated. We also mention and discuss some of the problems related to setting the conditions of public procurement, which affect respirators. Thus, this review is an “informative guide” in facilitating the understanding and use of full knowledge of the most appropriate respiratory protective devices in various situations.

Download Full-text

Multifunctional Polymer Composites Produced by Melt-Blown Technique to Use in Filtering Respiratory Protective Devices

Materials ◽

10.3390/ma13030712 ◽

2020 ◽

Vol 13 (3) ◽

pp. 712 ◽

Cited By ~ 2

Author(s):

Agnieszka Brochocka ◽

Aleksandra Nowak ◽

Katarzyna Majchrzycka ◽

Michał Puchalski ◽

Sławomir Sztajnowski

Keyword(s):

Production Method ◽

Absorption Capacity ◽

Respiratory Protection ◽

Breathing Zone ◽

Scanning Calorimetry ◽

Protective Devices ◽

Poly Ethylene Terephthalate ◽

Respiratory Protective Devices ◽

Poly Ethylene ◽

Materials Used

In this work, a multifunctional polymer composite is made using melt-blowing technology from polypropylene (88 wt.%) and poly (ethylene terephthalate) (12 wt.%) with the addition of functional modifiers, that is, 3 g of a superabsorbent polymer and 5 g of a biocidal agent (Biohaloysite). The use of modifiers is aimed at obtaining adequate comfort when using the target respiratory protection equipment (RPE) in terms of microclimate in the breathing zone and protection against harmful aerosols including bioaerosols. The developed production method is innovative in that the two powdered modifiers are simultaneously applied in the stream of elementary polymeric fibers by two independent injection systems. Aerosols of the modifiers are supplied via a specially designed channel in the central segment of the die assembly, reducing the amount of materials used in the production process and saving energy. The results show that the proposed method of incorporating additives into the fiber structure did not adversely affect the protective and functional properties of the resulting filtration nonwovens. The produced nonwoven composites are characterized by SEM, FTIR, and differential scanning calorimetry (DSC). Given their high filtration efficiency at 5%, satisfactory airflow resistance (~200 Pa), very good antimicrobial activity, and excellent water absorption capacity, the obtained multifunctional nonwoven composites may be successfully used in filtering respiratory protective devices.

Download Full-text