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Workplace Respiratory Protection Factors during Asbestos Removal Operations.

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Title: Workplace Respiratory Protection Factors during Asbestos Removal Operations.
Authors: Chazelet, Sandrine1 sandrine.chazelet@inrs.fr, Wild, Pascal2, Silvente, Eric1, Eypert-Blaison, Céline3
Source: Annals of Work Exposures & Health. May2018, Vol. 62 Issue 5, p613-621. 9p. 1 Diagram, 4 Charts, 1 Graph.
Subjects: Asbestos, Dust, Work environment, Breathing apparatus, Occupational hazards, Environmental exposure
Abstract: Numerous changes have been made to the French labour regulations in recent years relating to the prevention of risks of exposure to asbestos fibres for operators removing asbestos-containing materials. These changes refer to the method used to count fibres, the collective and personal protective devices to be used on these worksites, and the occupational exposure limit value, which was reduced to 10 f.L-1 on 2 July 2015. In this context, this study assessed the level of respiratory protection afforded by supplied-air respirators and powered air-purifying respirators by monitoring exposure for several operators on nine worksites. The levels of dustiness measured in personal samples taken outside masks showed significant evidence of potential exposure during removal of asbestoscontaining plaster or sprayed asbestos, and when using abrasive blasting to treat asbestos-containing materials. For these tasks outside concentration regularly exceeds 25 000 f.L-1. Measurements inside masks were generally low, under 10 f.L-1, except in some situations involving the removal of asbestos-containing plaster. This partial penetration of fibres inside masks could be due to the high loading linked to this material. The distributions of Workplace Protection Factors obtained for the two types of respiratory protective devices studied were broad, and the fifth percentile values equal to 236 and 104, respectively, for supplied-air respirators and powered air-purifying respirators. This work highlights once again the need to prioritize collective protection when seeking to prevent asbestos-related risks. [ABSTRACT FROM AUTHOR]
Copyright of Annals of Work Exposures & Health is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Workplace Respiratory Protection Factors during Asbestos Removal Operations.
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  Data: <searchLink fieldCode="AR" term="%22Chazelet%2C+Sandrine%22">Chazelet, Sandrine</searchLink><relatesTo>1</relatesTo><i> sandrine.chazelet@inrs.fr</i><br /><searchLink fieldCode="AR" term="%22Wild%2C+Pascal%22">Wild, Pascal</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Silvente%2C+Eric%22">Silvente, Eric</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Eypert-Blaison%2C+Céline%22">Eypert-Blaison, Céline</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Annals+of+Work+Exposures+%26+Health%22">Annals of Work Exposures & Health</searchLink>. May2018, Vol. 62 Issue 5, p613-621. 9p. 1 Diagram, 4 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Asbestos%22">Asbestos</searchLink><br /><searchLink fieldCode="DE" term="%22Dust%22">Dust</searchLink><br /><searchLink fieldCode="DE" term="%22Work+environment%22">Work environment</searchLink><br /><searchLink fieldCode="DE" term="%22Breathing+apparatus%22">Breathing apparatus</searchLink><br /><searchLink fieldCode="DE" term="%22Occupational+hazards%22">Occupational hazards</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+exposure%22">Environmental exposure</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Numerous changes have been made to the French labour regulations in recent years relating to the prevention of risks of exposure to asbestos fibres for operators removing asbestos-containing materials. These changes refer to the method used to count fibres, the collective and personal protective devices to be used on these worksites, and the occupational exposure limit value, which was reduced to 10 f.L-1 on 2 July 2015. In this context, this study assessed the level of respiratory protection afforded by supplied-air respirators and powered air-purifying respirators by monitoring exposure for several operators on nine worksites. The levels of dustiness measured in personal samples taken outside masks showed significant evidence of potential exposure during removal of asbestoscontaining plaster or sprayed asbestos, and when using abrasive blasting to treat asbestos-containing materials. For these tasks outside concentration regularly exceeds 25 000 f.L-1. Measurements inside masks were generally low, under 10 f.L-1, except in some situations involving the removal of asbestos-containing plaster. This partial penetration of fibres inside masks could be due to the high loading linked to this material. The distributions of Workplace Protection Factors obtained for the two types of respiratory protective devices studied were broad, and the fifth percentile values equal to 236 and 104, respectively, for supplied-air respirators and powered air-purifying respirators. This work highlights once again the need to prioritize collective protection when seeking to prevent asbestos-related risks. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Annals of Work Exposures & Health is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1093/annweh/wxy013
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      – SubjectFull: Work environment
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              Text: May2018
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              Y: 2018
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