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Control of noise risk in the printing industry
Machinery used in the printing industry is inherently noisy. Noise levels in this industry have the potential to cause work-related hearing damage, if the risks are not properly assessed and managed. HSE has undertaken a study of noise levels and exposures in the printing industry, to determine noise risks and identify control measures. The noise levels measured in this study indicate that print workers are exposed to hazardous levels of noise: 93% of the study population had noise exposure estimates exceeding the lower exposure action value (LEP,d 80 dB) specified in the Control of Noise at Work...
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...
Sound Pressure Levels in Rooms: A Study of Steady State Intensity, Total Sound Level, Reverberation Distance, a New Discussion of Steady State Intensity and Other Experimental Formulae
In this publication we include all, or almost all, the valid formulas of sound levels in different types of rooms. We will explain all the theoretical basis of each of them, starting with reflected intensity, both classical and revised theories, the total sound level and its uses in concert venues. We will also deal with empirical formulas mainly for classrooms, churches and religious buildings and industrial use. However, the main significance of this work is not only the wide range of formulas exposed but also that we have found the explanation of why the reverberation radius, or distance radius...
Working with vibrating machines with noise exposure increases the risk of hearing loss
The aim of this study was to examine the possible association of combined exposure of noise and hand-arm vibration (HAV) and the risk of noise-induced hearing loss. Workers in a heavy engineering industry were part of a dynamic cohort. The results show that working with vibrating machines in an environment with noise exposure increases the risk of hearing loss, supporting an association between exposure to noise and HAV, and the noise-induced hearing loss. Source : Hans Pettersson, Lage Burström, Mats Hagberg, Ronnie Lundström, Tohr Nilsson. Noise and hand-arm vibration exposure in relation...
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...
Industrial noise > 80 dBA, has a significant effect on salivary cortisol elevation
This study had 3 goals: (1) Assess and compare saliva cortisol concentrations in the morning and evening in normal work day and leisure day in industrial workers, (2) assess the relationship between industrial noise exposure and salivary cortisol concentrations, and (3) assess the possibility of using salivary cortisol as a possible marker of noise-induced stress. No significant difference was obtained for morning cortisol levels between leisure day and working day samples. But, for evening cortisol concentrations, a strong significant difference was noted leisure day and working day. The evening...
Cardiovascular Risk in Rotogravure Industry
Objective: To verify whether the occupational hazards in the rotogravure industry can be associated with cardiovascular effects. Methods: We evaluated cardiovascular parameters and audiometric tests and analyzed noise, solvents, and shift work in 44 exposed and 44 unexposed workers. Results: Unlike unexposed workers, the rotogravure workers showed significant increase of mean systolic and diastolic blood pressure (BP) values (P = 0.019; P = 0.003), higher frequency of hypertension (P = 0.002) and electrocardiographic abnormalities (P = 0.0001), significant reduction or no variation of BP response...
Employees working in high noise environments are at a higher risk for high blood pressure and myocardial infarction.
The cardiovascular effects of noise have been the source of growing interest in recent years. This is because evidence has increased that noise affects cardiovascular health. The long-term effects of chronic noise exposure at high noise levels have been studied in animals, showing permanent vascular changes and alterations in the heart muscle, which indicate an increased risk of cardiovascular mortality. Although the effects tend to be diluted in the occupational studies due to the 'healthy worker effect', epidemiological studies carried out in the occupational field have shown that employees...
ICAR – Infrastructure commune en acoustique pour la recherche ÉTS-IRSST
La création du laboratoire ICAR s'inscrit naturellement dans la mission de l'ÉTS et de l'IRSST. Ces deux organisations résolument engagées dans la recherche et le développement affichent une longue tradition de collaboration. La mise en commun de leurs ressources respectives contribuera grandement au succès d'ICAR qui a aussi bénéficié d'une contribution financière de Développement économique Canada. La recherche scientifique sur le bruit exige des installations ultramodernes dans un environnement...

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