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ASTM E1374 - Standard Guide for Office Acoustics and Applicable ASTM Standards
This guide is intended for the use of architects, engineers, office managers, and others interested in designing, specifying, or operating office environments. It is not intended to be applied to other environments, for example, open plan schools. While this guide attempts to clarify the many interacting variables that influence acoustical performance, it is not intended to supplant the experience and judgment of experts in the field of acoustics. Competent technical advice should be sought for success in the design of offices, including comparisons of test results carried out according to ASTM...
NF EN ISO 7029 - 2017 - Acoustique
Distribution statistique des seuils d'audition en fonction de l'âge et du sexe Le présent document fournit des données statistiques descriptives concernant le seuil d'audition de groupes de sujets otologiquement normaux d'âges divers dans des conditions d'écoute monoaurale à l'aide d'écouteurs. Il spécifie les informations suivantes, pour des populations dont l'âge est compris entre 18 ans et 80 ans inclus et pour la gamme de fréquences audiométriques de 125 Hz à 8 000 Hz : la valeur...
Noise risk as described in instructions supplied with printing machinery
The printing industry uses a wide range of noisy machines that have the potential to damage workers' hearing if the risks are not effectively managed. Users need information that represents noise emissions during the intended uses of the machine, to enable an assessment and the management of the associated noise risks. There is a legal requirement under the Supply of Machinery (Safety) Regulations 2008 for machinery manufacturers to provide declared noise emissions in instruction manuals. (This legislation implements the EU Machinery Directive 2006/42/EC). However, there is a lack of information...
Z1007-16 - Hearing loss prevention program (HLPP) management
Workers in many occupational sectors – including manufacturing, mining, construction, transportation, and emergency services – often perform their jobs while exposed to high levels of occupational noise. Long-term exposure to noise can result in both hearing loss and stress-related illness. In addition, noise can interfere with critical communications and warning signals. For these reasons, it is critically important to identify these hazardous situations and implement preventative measures to help protect the hearing of workers. The first in a series of standards on occupational noise...
Understanding Noise Exposure Limits: Occupational vs. General Environmental Noise
Noise-induced hearing loss (NIHL) is 100% preventable; however, once acquired, it is permanent and irreversible [NIOSH 1998]. Understanding and minimizing the risks associated with noise exposures are the keys to preventing noise-related hearing loss. NIOSH has a long history of leadership in conducting research, advancing control measures, and recommending noise-exposure limits to prevent job-related hearing loss. Sometimes, observers ask whether our recommended limits for occupational exposure can be applied to exposures in the general environment from sources such as street noise, consumer appliances...
Z107.58-15 - Noise emission declarations for machinery
This is the second edition of CSA Z107.58, Noise emission declarations for machinery. It supersedes the previous edition, published in 2002. This Standard provides information on noise emission, which should be supplied with new machinery, to manufacturers, purchasers, and importers/exporters. A major goal of this Standard is to help manufacturers efficiently provide standardized information on noise emissions from machinery and equipment (i.e., noise emission declarations). This Standard enables manufacturers to a) meet the European Commission requirements specified in reference documents listed...
Prevalence of Workers With Shifts in Hearing by Industry
A Comparison of OSHA and NIOSH Hearing Shift Criteria Objective: The purpose of this study was to compare the prevalence of workers with National Institute for Occupational Safety and Health significant threshold shifts (NSTS), Occupational Safety and Health Administration standard threshold shifts (OSTS), and with OSTS with age correction (OSTS-A), by industry using North American Industry Classification System codes. Methods: From 2001 to 2010, worker audiograms were examined. Prevalence and adjusted prevalence ratios for NSTS were estimated by industry. NSTS, OSTS, and OSTS-A prevalences were...
CSA Z107.56 Measurement of noise exposure
Workers in many occupational sectors – including manufacturing, mining, construction, transportation, and emergency services – often perform their jobs while exposed to high levels of occupational noise. Long-term exposure to noise can result in both hearing loss and stress-related illness. As part of the series of standard for acoustics and noise control, this third edition of Z107.56 focuses on procedures for measuring occupational noise exposure to determine if the exposure poses a threat to worker safety. Source : http://shop.csa.ca/en/canada/environmental-technology/z10756-13/invt...
Prevalence of hearing loss in the United States by industry
Background Twenty-two million workers are exposed to hazardous noise in the United States. The purpose of this study is to estimate the prevalence of hearing loss among U.S. industries. Methods We examined 2000–2008 audiograms for male and female workers ages 18–65, who had higher occupational noise exposures than the general population. Prevalence and adjusted prevalence ratios (PRs) for hearing loss were estimated and compared across industries. Results In our sample, 18% of workers had hearing loss. When compared with the Couriers and Messengers industry sub-sector, workers employed...
Survey of noise emission and risk information suppllied with a range of work machinery - RR962
Previous work has shown that the noise emission data provided by the manufacturers can be of variable quality and be based on standards that no longer exist. In some cases no noise emission data are provided at all. The Health and Safety Executive (HSE) needs to be in a position to challenge or support the validity of noise emission data or other information provided by manufacturers, to offer robust advice to dutyholders on the management of noise exposure based on this information, and facilitate the promotion of low noise machinery on a general or machine specific basis. The aim of the project...
Promoting Hearing Health among Fire Fighters
Exposure to high noise levels among fire fighters is well documented and increases the risk for noise-induced hearing loss. NIOSH recommends measures to promote better hearing health through the use of quieter equipment, better work practices, hearing protection devices, and implementation of effective hearing loss prevention programs. Source : http://www.cdc.gov/niosh/docs/wp-solutions/2013-142/pdfs/2013-142.pdf
Le risque bruit pas assez présent sur les notices des machines
Selon une enquête de la Direction générale du travail (DGT) avec l'INRS sur les notices d'instructions fournies avec les machines, montre que ces documents sont, pour la majorité, très peu renseignés sur le risque bruit. Le projet NOMAD a consisté en une enquête visant à examiner le contenu, en matière de bruit, des notices d'instructions fournies avec les machines proposées à la vente dans l'Espace économique européen (EEE). Le projet a recueilli plus de 1500 notices d'instructions...
Réglementation nuisances physiques : Une approche commune
Les textes réglementaires relatifs aux quatre nuisances physiques générées au travail que sont le bruit, les vibrations, les champs électromagnétiques et les rayonnements optiques artificiels peuvent être d'un abord difficile pour des non-spécialistes. Afin de faciliter leur approche, nous présentons ici leurs fondements communs et les grands principes qui les régissent. Source : http://www.inrs.fr/accueil/produits/mediatheque/doc/publications.html?refINRS=ED%206128
Workers in the Mining, Manufacturing, and Construction industries need better engineering controls for noise
Twenty-two million workers are exposed to hazardous noise in the United States. The purpose of this study is to estimate the prevalence of hearing loss among U.S. industries. 2000–2008 audiograms for male and female workers ages 18–65, who had higher occupational noise exposures than the general population showed that 18% of workers had hearing loss. When compared with the Couriers and Messengers industry sub-sector, workers employed in Mining, Wood Product Manufacturing, Construction of Buildings and Real Estate and Rental and Leasing had higher risks for hearing loss. Workers in the...
A combination of parameters is necessary for the characterization of the acoustical conditions of open-plan offices
In the new international standard ISO 3382-3 the measurement procedure for open-plan offices is described and a number of new room acoustical parameters for the objective evaluation are defined. Among the new parameters are the privacy distance and the distraction distance, both derived from the STI (speech transmission index). With room acoustic simulation software these measurements can be simulated, thus providing a tool for the acoustical design of open-plan offices. The paper presents an example office with a range of alternative acoustical solutions that include different amount of absorption...
La participation du travailleur à l’évaluation environnementale du bruit a généré de nombreuses pistes d’amélioration
Pour identifier les possibilités de réduction des expositions, les principales sources de bruit et notamment les différents dysfonctionnements générateurs de ces niveaux sonores ont été repérés par des groupes de travail polycompétents composés de superviseurs, d’opérateurs et d’agents maintenance. La participation de l’opérateur à l’analyse causale des risques de son environnement a favorisé son implication active dans les actions sécurité générant...
Une nouvelle norme pour mesurer l'acoustique de bureaux à aires ouvertes
L'ISO 3382-3:2012 spécifie les méthodes de mesurage des propriétés acoustiques des salles dans les bureaux ouverts avec mobilier. Elle décrit les modes opératoires de mesurage, l'appareillage nécessaire, la couverture requise et la méthode d'évaluation des données et de présentation du rapport d'essai. Les résultats des mesurages peuvent être utilisés pour évaluer les propriétés acoustiques des salles dans les bureaux ouverts. L'ISO 3382-3:2012 est destinée...
2 years after implementation of the Noise at Work Regulations for UK entertainment industry, the industry is failing to meet regulatory requirements.
From April 2008, the UK entertainment industry became regulated under the Noise at Work Regulations 2005, meaning that employers from orchestras to nightclubs are legally required to adhere to the same requirements (based on ISO 9612:2009) for controlling noise exposure for their staff. The majority of staff (70%) in all venues exceeded the daily noise exposure limit value in their working shift. Use of hearing protection was rare (<30%) and not enforced by most venues. The understanding of the hazard posed by noise was low, and implementation of the noise regulations was haphazard, with staff...
Une démarche de mise en conformité réglementaire de l’exposition au bruit des travailleurs
L'évaluation de l'environnement professionnel est une condition indispensable pour satisfaire à l'obligation de sécurité auxquels les employeurs sont soumis vis-à-vis de leurs employés. Il lui faut ensuite mettre en œuvre des moyens de prévention en adéquation avec les risques identifiés. La réglementation impose le contrôle de l'exposition au bruit des travailleurs tous les cinq ans ou dès la survenue d'une modification profonde des installations, puis précise les dispositions à...
The ANSI S12.42 methods proposed by EPA’s provide consistent and reproducible results
This study tests the ANSI S12.42 methods with a range of hearing protection devices measured in field conditions. The average IPILs (impulse peak insertion loss) increased with peak pressure and ranged between 20 and 38 dB. For some protectors, significant differences were observed across protector examples of the same model, and across insertions. The EPA's (U.S. Environmental Protection Agency) proposed methods provide consistent and reproducible results. The proposed impulse NRR (noise reduction rating) rating should utilize the minimum and maximum protection percentiles as determined by...
“Hearing Conservation Programs” are not an adequate substitute for engineering and administrative controls.
Noise induced hearing loss is still too prevalent in American workplaces as the attempts at “hearing conservation programs” have proven inadequate. The author explains that the American workers have been the subjects in what has been largely a failed experiment for 28 years. Hearing protection devices are neither an efficient nor a humane replacement for eliminating the noise hazard and should once again be allotted their proper place in the control hierarchy. Several studies have found widespread and serious gaps in compliance with requirements such as audiometric testing, training...
Improvements in education, technical support, and regulatory enforcement reduce barriers to implementation of engineered noise control
The most effective intervention—engineered noise controls (ENC) —is rarely implemented; a qualitative study was designed to investigate barriers to the implementation of ENC. Many factors emerged as possible barriers to the implementation of engineered noise control, including: poor knowledge of relevant regulations, noise reduction options and the health impacts of noise; weak technical skills and experience; low ranking of noise as a hazard by stakeholders; issues around job insecurity, weak language skills; lack of ‘quiet’ machine options and information from equipment...
Bruit excessif, la CLP s'en remet à la définition du terme «excessif» que donne le dictionnaire
Le travailleur doit donc démontrer, non pas une exposition à un bruit important ou significatif, mais plutôt une exposition à un bruit «qui dépasse la mesure souhaitable ou permise, qui est trop grand, trop important». La présomption de maladie professionnelle s'applique puisque le travailleur a une atteinte auditive causée par le bruit et qu'il a été exposé à des bruits excessifs dans le cadre de son travail de mécanicien-assembleur de moteurs d'avions. Certaines mesures réalisées...
The Zwicker loudness calculation method, soon deleted from ISO standardization
A widely used metric, the Zwicker loudness calculation method, is currently being deleted from ISO standardization to be replaced with a new method. The Moore & Glasberg method behaves differently than Zwicker method with different signal bandwidths. National technical advisory group representatives to ISO TC43 will present each country's voting position. This issue is very important; there is a possibility of a significant shift in the use and industrial usefulness of psychoacoustic metrics. No «translation formula» may be applied universally to a result calculated with one...
Duration of noise exposure, a better predictor than noise exposure levels
In this retrospective study, medical records of periodic occupational health examinations of 29,644 construction workers are analysed. Pure-tone audiometric thresholds of noise-exposed workers are compared to a non-exposed control group and to ISO-1999 predictions. Regression analyses are conducted to explore the relationship between hearing loss and noise intensity, noise exposure time and the use of hearing protection. For the first decade, the population medians show poorer hearing than predicted by ISO-1999. Duration of noise exposure was a better predictor than noise exposure levels, probably...
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