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Protection de l'ouïe (RSS)
Réponse de l'INRS à la question suivante : À partir de quel niveau de bruit d'exposition peut-on conseiller le port d'un double protecteur auditif ? Comment peut-on estimer l'efficacité d'une double protection ? Comment en déduire le niveau de bruit résiduel sous le protecteur pour le comparer aux valeurs limites d'exposition ? A. Kusy Source : DMT assistance dans Documents pour le médecin du travail , no 125, 1er trimestre 2011, p. 141-142. http://www.dmt-prevention.fr/inrs-pub/inrs01.nsf/IntranetObject-accesParReference...
Leading experts from the National Institute for Occupational Safety and Health (NIOSH) contribute to this month's special issue of the peer-reviewed journal Noise and Health on state-of-the-art research on hearing protection devices. The March-April issue of Noise and Health is available online at www.noiseandhealth.org . The articles present latest findings in areas where new research is vital for addressing challenges that practitioners, employers, and workers can face in choosing and using proper hearing protection. These include: •Proper fit testing of hearing protectors. •Determining...
Conformity assessment is key to ensuring that the products we purchase are effective and perform to specifications; as users we are not expected to know or be engaged in the actual intricacies of how products are tested and verified to make sure that they meet performance requirements. This report focuses on conformity assessment for occupational personal protective technologies (PPT)—ensuring that PPT are effective in preventing or reducing hazardous exposures or situations that workers face in their jobs. Because respirators already have an extensive testing and conformity assessment process...
La réduction du bruit à la source est la solution à privilégier pour combattre les effets du bruit en milieu de travail. Malgré tout, de par sa simplicité à mettre en oeuvre à par son apparent faible coût, l'utilisation de protecteurs auditifs demeure très populaire. Il devient donc important de bien connaître l'efficacité réelle des protecteurs utilisés en milieu de travail afin de faire des choix judicieux et éclairés. Cependant, de nombreuses études au cours des vingt...
A Microphone In Real Ear (MIRE) technique specifically designed to measure Hearing Protection Device (HPD) attenuation in the field has been recently made available on a large scale. Some detailed studies of such measurement system, often referred to as “Field-MIRE” or “F-MIRE” systems, have also made clear that the measurement attenuation for the high frequencies (typically in the 2, 4 and 8 kHz Octave Bands) could become surprisingly variable over time, for a same fit of an HPD on a human subject. After thorough investigation, and because the measurement system itself...
Most hearing conservation programs rely on hearing protection devices (HPDs) to reduce workers' exposure to hazardous noise and other loud sounds and to prevent noise-induced hearing loss (NIHL). Other methods of reducing noise exposure, such as engineering and administrative controls, are used less often due to enforcement policies that allow hearing protectors to be used as a substitute for noise controls and because of concerns about the effectiveness and feasibility of noise controls in the workplace. Source : http://www.ishn.com/Articles/Feature_Article/BNP_GUID_9-5-2006_A_10000000000000696699
This report considers the effectiveness of hearing protectors in everyday work situations. The study reported here was undertaken in two parts. The first consisted of interviews with employers to discuss management of noise and hearing protector use, and on site observation of hearing protector use. The second part was objective laboratory measurements of hearing protector insertion loss. The purpose of these measurements was to quantify the reduction in protection due to poor fitting or maintenance for a range of hearing protectors. Earmuffs were tested using the MIRE (microphone in real ear)...
Staff at a major music festival were exposed to very high noise levels without adequate care for their safety. This was a large music festival with more than 50,000 people present and with two major outdoor stages. http://www.soundadvice.info/amplifiedlivemusic/casestudies.htm#outdoor