Parcourir par tags
Tous les tags »
Exposition des travailleurs au bruit (RSS)
Par la réverbération, le local augmente le bruit provenant des machines et affecte tout l'espace de travail. Le code du travail français fixe les caractéristiques minimales que doivent présenter les locaux. Ce document de l'INRS rappelle quelques aspects techniques, décrit comment qualifier un local, précise les exigences réglementaires et explique le principe et la mise en œuvre du traitement acoustique d'un local. Ce document annule et remplace la fiche pratique de sécurité ED 136 "Améliorer l'acoustique...
Facing an increasing violence level and higher firepower in the hands of criminal organizations (especially those related to drug trafficking), the Military Police of Pernambuco has created, in 1989, the “1a Companhia Independente de Operações Especiais” (1st Independent Company of Special Operations), as a tactical last resort of the Police to be used on special, complex situations. The CIOE progressively makes use of Negotiation measures, of less-than-lethal maneuvers, of Precision Shots and Tactical Assaults. When all possibilities are drained, the Precision Shot will...
In intensive care units, the main noise sources are hospital staff on duty and medical equipment, which generates both operating noise and acoustic alarms. Results of a survey of hospital staff are presented, as well as measurements in two German hospital wards: a standard two-bed room and a special intermediate care unit (IMC-Unit), each in a different intensive care unit (ICU). An analysis of the survey and the measured data, together with a comparison of thresholds of national and international regulations and standards describe the acoustic situation and its likely noise effects on staff and...
L’article présente une étude des causes de la perte d’audition chez le plongeur professionnel. Les raisons principales identifiées sont l’exposition au bruit et les accidents barotraumatique. Une perte auditive tant subjective qu'objective a été associée à l'exposition professionnelle au bruit, mais non pas avec la fréquence de plongée ou avec une histoire de barotraumatisme de l'oreille moyenne. La plongée sans incident n’apparait pas être responsable de la baisse d’audition. Source...
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 hearing capabilities of a worker are very important for communication, gaining situational awareness, and reducing the risk of other hazards or injury. However, understanding communications in extreme noise and at work sites is always challenging while wearing hearing protection. Too much protection and a worker cannot hear and is vulnerable to other safety hazards. Too little protection, and the worker is inadequately protected and at a higher risk for noise-induced hearing loss . For those who seek to bridge the gap between traditional hearing protection and communication, the technology...
This study measured the noise levels in the Portland Veteran's Affairs Medical Center's outpatient chemotherapy clinic. Patients, visitors, and staff members filled out anonymous surveys regarding their reactions to noise levels. Noise measurement analysis indicated that levels were at or above 70 dB SPL for less than ten minutes during the 11-hour recording window. The patient and visitor surveys indicated that both groups were unbothered by noise in the clinic. However, most staff members were bothered by or concerned about noise levels, and many felt that it caused stress and difficulty...
Noise induced hearing loss is irreversible damage to the ears caused by exposure to high levels of noise. A recording on HSE site demonstrates how hearing is gradually lost over a working life: « Noise induced hearing loss – Audio demonstration reveals potential effects». You can also 'see' the sort of damage that excessive noise can cause inside your ears; the clip has been reproduced from "The Hearing Video" by the kind permission of WorksafeBC. Source: Latest automated update(s) to Noise on HSE's Website: 17-11-2011 http://www.hse.gov.uk/noise/demonstration...
Intensive care units (ICUs) have important but challenging sound environments. Alarms and equipment generate high levels of noise and ICUs are typically designed with hard surfaces. A poor sound environment can add to stress and make auditory tasks more difficult for clinicians. Two units with similar patient acuity and treatment models showed little differences based on traditional overall noise measures. The objective differences between the two occupied sound environments emerged only through a more comprehensive analysis of the “occurrence rate” of peak and maximum levels, frequency...
45 male firefighters, aged 41.0 years with around 14 years of experience were followed up to characterize their exposures to noise and carbon monoxide. Noise levels were significantly greater on day shifts, among firefighters in non-supervisory jobs, for those working on engine and rescue trucks, by number of emergency calls they attended and in particular for motor vehicle accident (MVA) and building alarms calls, if subjects worked near or used fire equipment, or if they participated in active firefighting training activities. 1% of CO samples exceeded occupational limits, both full-shift and...
Worship in Protestant churches in Brazil is very noisy. Thus, this practice may pose a hearing risk. An analysis was carried out in 5 churches located in the city of São José dos Campos, Brazil. The priest’s noise exposure was over the recommended limits. The normalized exposure level varied between 95.4 to 99.5 dB (A). In 2 of the churches, the noise exposure registered, with values of 85.3 and 86.5 dB (A), may also pose risk to the worshippers. The authors conclude that worship in the churches generated sound pressure levels that imply health risk, especially to priests, so...
Workers at call and dispatch centers may suffer health risks associated with high noise levels from their headsets. T he NIOSH evaluations did not reveal hearing loss problems among call center operators and dispatchers that can be directly attributed to noise exposures from their headsets or the surrounding environment. However, most workers interviewed reported various symptoms often associated with prolonged exposure to high noise levels. Symptoms included ringing in their ears, headaches, irritability, increased tension, and fatigue. There are international standards on...
Any exposure estimation technique has inherent strengths and limitations. In an effort to improve exposure estimates, this study developed and evaluated the performance of several hybrid exposure estimates created by combining information from individual assessment techniques. Three single exposure assessment techniques [trade mean (TM), task-based (TB), and subjective rating (SR)] were used to estimate exposures for each subject. Hybrid techniques were then developed which incorporated the TM, SR, and TB noise exposure estimates via arithmetic mean combination, linear regression combination, and...
Ce modèle exponentiel considère qu’une exposition quotidienne à des bruits impulsifs est plus nocive pour l’audition que celle à un bruit continu. En effet, certains bruits impulsifs peuvent causer des dommages irréversibles instantanément et un facteur de correction doit être ajouté au niveau moyen mesuré. L’indicateur s’applique au suivi audiologique de travailleurs dans la cinquantaine et tient compte, entre autres, des résultats du groupe (HEG, Homogeneous Exposure Groups). Une surveillance audiométrique...
OSHA launched a new Safety and Health Topics page on Occupational Noise Exposure to provide resources to prevent noise-related hearing loss, which has been listed as one of the most prevalent occupational health concerns in the United States for more than 25 years. Approximately 30 million people in the United States are occupationally exposed to hazardous noise and thousands of workers every year suffer from preventable hearing loss due to high workplace noise levels. The new Web page provides information on the health effects of hazardous noise exposure and comprehensive information on controls...
Plus de Messages
Page suivante »