2013-04-01 12:00 - Messages

Amiante : équipements de protection individuelle

Un arrêté du 7 mars 2013 traite du choix des équipements de protection individuelle pour des opérations comportant un risque d'exposition à l'amiante, selon le niveau d'empoussièrement. Il fixe également les règles d'utilisation, d'entretien et de vérification des équipements. Tous les travaux susceptibles de libérer des fibres sont concernés.

Source : http://www.legifrance.gouv.fr/affichTexte.do?cidTexte=JORFTEXT000027169462

Evaluation of N95 Respirator Use with a Surgical Mask Cover: Effects on Breathing Resistance and Inhaled Carbon Dioxide

Objective: For pandemic influenza outbreaks, the Institute of Medicine has recommended using a surgical mask cover (SM) over N95 filtering facepiece respirators (FFRs) among healthcare workers as one strategy to avoid surface contamination of the FFR which would extend its efficacy and reduce the threat of exhausting FFR supplies. The objective of this investigation was to measure breathing air quality and breathing resistance when using FFRs with US Food and Drug Administration-cleared SM and without SM. Methods: Thirty National Institute for Occupational Safety and Health (NIOSH)-approved FFR models with and without SM were evaluated using the NIOSH Automated Breathing and Metabolic Simulator (ABMS) through six incremental work rates. Results: Generally, concentrations of average inhaled CO2 decreased and average inhaled O2 increased with increasing O2 consumption for FFR+SM and FFR-only. For most work rates, peak inhalation and exhalation pressures were statistically higher in FFR+SM as compared with FFR-only. The type of FFR and the presence of exhalation valves (EVs) had significant effects on average inhaled CO2, average inhaled O2, and breathing pressures. The evidence suggests that placement of an SM on one type of FFR improved inhaled breathing gas concentrations over the FFR without SM; the placement of an SM over an FFR+EV probably will prevent the EV from opening, regardless of activity intensity; and, at lower levels of energy expenditure, EVs in FFR do not open either with or without an SM. Conclusions: The differences in inhaled gas concentrations in FFR+SM and FFR-only were significant, especially at lower levels of energy expenditure. The orientation of the SM on the FFR may have a significant effect on the inhaled breathing quality and breathing resistance, although the measurable inhalation and exhalation pressures caused by SM over FFR for healthcare users probably will be imperceptible at lower activity levels.

Source : Edward James Sinkule, Jeffrey Bryon Powell, and Fredric Lee Goss. Evaluation of N95 Respirator Use with a Surgical Mask Cover: Effects on Breathing Resistance and Inhaled Carbon Dioxide. Ann Occup Hyg (2013) 57(3): 384-398 first published online October 29, 2012

Cut Through the Confusion of Selecting Cut-Protective PPE

Not all cut-resistant gloves are created equal, and the abundance of information about cut testing methods and standards can be overwhelming. Here's what you need to know about cut testing standards and how they apply to your safety program. Despite educational efforts, there remains an unsettling level of confusion about cut-resistant gloves. With multiple 1-to-5 rating scales, a variety of acceptable or certified standards and differing testing methods, as well as a slew of acronyms associated with glove testing, safety managers may find themselves overwhelmed when sifting through potential cut-resistant PPE. It's therefore vital that those choosing PPE are fully informed on the cut-resistant products available to them.

Source : http://ehstoday.com/hand-protection/cut-through-confusion-selecting-cut-protective-ppe

HEPA Filtration

ASTM International Committee F11 on Vacuum Cleaners has formed a new task group to develop proposed standards for high efficiency particulate air filtration, typically known as HEPA.

Source : http://www.astm.org/standardization-news/update/hepa-filtration--mj13.html

Forget Me Not: Place Eyewashes in These Easily Forgotten Locations

When an injury occurs, immediate and proper treatment can make a significant difference in the outcome. Do you have eyewash stations in the right places?

Source : http://ehstoday.com/eye-face-amp-head/forget-me-not-place-eyewashes-these-easily-forgotten-locations

The effects of wearing respirators on human fine motor, visual, and cognitive performance

When selecting a respirator, it is important to understand how employees' motor, visual and cognitive abilities are impacted by the personal protective equipment. This study compares dust, powered-air-purifying and full-face, negative-pressure respirators. Thirty participants performed three varied tasks. Each participant performed each task without a respirator and while wearing the three respirator types. The tasks included a hand tool dexterity test, the Motor-Free Visual Perception Test and the Serial Sevens Test to evaluate fine motor, visual and cognitive performance, respectively. The time required for task completion and the errors made were measured. Analysis showed no significant effect due to respirator use on the task completion time. A significant increase was found in the error rate when participants performed the cognitive test wearing the full-face, negative-pressure respirator. Participants had varying respirator preferences. They indicated a potential for full-face, negative-pressure respirators to negatively affect jobs demanding high cognitive skills such as problem solving and decision-making. Practitioner summary: while respirators are life-saving personal protective equipment (PPE), they can unintentionally reduce human performance, especially if job characteristics are not considered during PPE selection. An experiment was conducted to compare three respirators (dust respirator, powered-air-purifying respirators and full-face respirator) for varying task types. The full-face respirator was found to affect human cognitive performance negatively

Source : Alghamri AA, Murray SL, Samaranayake VA. The effects of wearing respirators on human fine motor, visual, and cognitive performance. Ergonomics 2013; ePub http://dx.doi.org/10.1080/00140139.2013.767383

Alberta university designs new oil and gas PPE

New safety gear for the oil and gas industry is aiming to make burns caused by blasts of hot steam and scalding water a thing of the past.
University of Alberta assistant professor Megan Strickfaden and a team of graduate students have just finished the first round of testing on a new garment system consisting of a jacket and pants meant to be worn over top of a pair of coveralls.
The garments feature pant legs that are wide enough that workers can slip them on without having to take their boots off and a fleece lining with venting in the back (where a worker is least likely to be exposed to hot water or steam). The pants and jacket are made out of a tri-laminate, semi-permeable material, Strickfaden said from Edmonton, letting air pass through but still staying water and fire resistant.

Source : http://www.ohscanada.com/news/alberta-university-designs-new-oil-and-gas-ppe/1002130208/?ref=rss&ctid=1002130208

La protection respiratoire contre les bioaérosols

Les risques d'exposition à des microorganismes aéroportés ou bioaérosols infectieux suscitent de plus en plus d'intérêt pour quiconque a un rôle à jouer en matière de santé et sécurité au travail (SST). Cet intérêt est encore plus marqué lorsque vient le temps de choisir et d'utiliser une protection respiratoire contre les bioaérosols infectieux. L'objectif de cet article est de permettre de choisir et d'utiliser des appareils de protection respiratoire (APR) pour tous les travailleurs contre tous les bioaérosols, infectieux ou non.

Source : Lavoie, J., Cloutier, Y., Marchand, G., Neesham-Grenon, E., Debia, M. La protection respiratoire contre les bioaérosols. Le Labexpert, février 2013, vol.3, no1, p. 7-17. http://optmq.org/wp-content/uploads/2013/02/LabExpert-Revue-Fev2013-corrig%C3%A91.pdf

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