2017-06-01 12:00 - Messages

ASTM F1407 - 12(2017) - Standard Test Method for Resistance of Chemical Protective Clothing Materials to Liquid Permeation

Permeation Cup Method
This test method establishes a standard procedure for rapidly (in 1 h or less) determining the chemical resistance of specimens of protective clothing materials. This test method can be used to rank materials as to their suitability for use with liquids of known or unknown composition.
The breakthrough detection time, permeation rate, or cumulative permeation can be used to identify protective clothing materials that are more likely to limit potential exposures to chemicals. Longer breakthrough detection times and lower cumulative amounts permeated and permeation rates are characteristics of materials that are better barriers to the test chemical.

Source: https://www.astm.org/Standards/F1407.htm

ASTM F1001 - 12(2017) - Standard Guide for Selection of Chemicals to Evaluate Protective Clothing Materials

This guide establishes a recommended list of challenge chemicals to encourage those who evaluate chemical protective clothing to test a minimum number of chemicals in common. This list will simplify the comparison of data from different sources.
This guide may also serve material developers or evaluators in screening candidate protective clothing materials.

Source: https://www.astm.org/Standards/F1001.htm

ASTM F1868-17 - Standard Test Method for Thermal and Evaporative Resistance of Clothing Materials Using a Sweating Hot Plate

The thermal resistance and evaporative resistance provided by fabrics, films, coatings, foams, and leathers, including multi-layer assemblies, is of considerable importance in determining their suitability for use in fabricating protective clothing systems.
The thermal interchange between people and their environment is, however, an extremely complicated subject that involves many factors in addition to the steady-state resistance values of fabrics, films, coatings, foams, and leathers, including multi-layer assemblies. Therefore, thermal resistance values and evaporative resistance values measured on a hot plate may or may not indicate relative merit of a particular material or system for a given clothing application. While a possible indicator of clothing performance, measurements produced by the testing of fabrics have no proven correlation to the performance of clothing systems worn by people. Clothing weight, drape, tightness of fit, and so forth, can minimize or even neutralize the apparent differences between fabrics or fabric assemblies measured by this test method.

Source: https://www.astm.org/Standards/F1868.htm

Reliability of N95 respirators for respiratory protection before, during, and after nursing procedures

Background: The adequate fit of an N95 respirator is important for health care workers to reduce the transmission of airborne infectious diseases in the clinical setting. This study aimed to evaluate whether adequately sealed N95 respirators may provide consistent protection for the wearer while performing nursing procedures.
Methods: Participants were a group of nursing students (N = 120). The best fitting respirator for these participants was identified from the 3 common models, 1860, 1860S, and 1870+ (3M), using the quantitative fit test (QNFT) method. Participants performed nursing procedures for 10-minute periods while wearing a backpack containing the portable aerosol spectrometers throughout the assessment to detect air particles inside the respirator.
Results: The average fit factor of the best fitting respirator worn by the participants dropped significantly after nursing procedures (184.85 vs 134.71) as detected by the QNFT. In addition, significant differences in particle concentration of different sizes (>0.3, >0.4, >1.0, and >4.0 µm) inside the respirator were detected by the portable aerosol spectrometers before, during, and after nursing procedures.
Conclusions: Body movements during nursing procedures may increase the risk of face seal leakage. Further research, including the development of prototype devices for better respirator fit, is necessary to improve respiratory protection of users.

Source: Suen, L. K., Yang, L., Ho, S. S., Fung, K. H., Boost, M. V., Wu, C. S., ... & O'Donoghue, M. (2017). American Journal of Infection Control.

Effects of organizational safety practices and perceived safety climate on PPE usage, engineering controls, and adverse events involving liquid antineoplastic drugs among nurses

Antineoplastic drugs pose risks to the healthcare workers who handle them. This fact notwithstanding, adherence to safe handling guidelines remains inconsistent and often poor. This study examined the effects of pertinent organizational safety practices and perceived safety climate on the use of personal protective equipment, engineering controls, and adverse events (spill/leak or skin contact) involving liquid antineoplastic drugs.
Data for this study came from the 2011 National Institute for Occupational Safety and Health (NIOSH) Health and Safety Practices Survey of Healthcare Workers which included a sample of approximately 1,800 nurses who had administered liquid antineoplastic drugs during the past seven days. Regression modeling was used to examine predictors of personal protective equipment use, engineering controls, and adverse events involving antineoplastic drugs.

Source: DeJoy, D. M., Smith, T. D., Woldu, H., Dyal, M. A., Steege, A. L., & Boiano, J. M. (2017). Journal of Occupational and Environmental Hygiene.

NF EN 207 Mai 2017 - Protection individuelle de l'œil

Filtres et protecteurs de l'œil contre les rayonnements laser (lunettes de protection laser)
La présente Norme européenne s'applique aux protecteurs de l'oeil utilisés contre l'exposition accidentelle aux rayonnements laser tels que définis dans l'EN 60825-1:2007 dans le domaine spectral compris entre 180 nm (0,18 micron m) et 1 000 micron m. Elle définit les exigences, les méthodes d'essai et le marquage.

Source: https://www.boutique.afnor.org/norme/nf-en-207/protection-individuelle-de-l-il-filtres-et-protecteurs-de-l-il-contre-les-rayonnements-laser-lunettes-de-protection-laser/article/865412/fa186066

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