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FD CEN ISO/TR 19664 - Réponse des individus aux vibrations
Recommandations et terminologie pour les instruments et l'équipement d'évaluation de l'exposition quotidienne aux vibrations sur le lieu de travail selon les exigences de santé et de sécurité L'évaluation de l'exposition des individus aux vibrations transmises à la fois au niveau du système main-bras et au niveau de l'ensemble du corps, sur le lieu de travail, repose sur l'évaluation combinée des amplitudes de vibration et des temps d'exposition. Plusieurs types d'instruments et sources de...
Occupational biomechanical risk factors for surgically treated ulnar nerve entrapment in a prospective study of male construction workers
Evidence was provided for forceful hand-grip work, with and without vibration, as a risk factor for ulnar nerve entrapment (UNE) surgery in a large cohort of Swedish construction workers. Several individual biomechanical factors comprising such work were associated with increased risk of UNE, including: increased grip force, upper extremity load, frequency of hand-held tool use, and hand arm vibration. Source: Jackson, J. A., Olsson, D., Punnett, L., Burdorf, A., Järvholm, B. et Wahlström, J. (2018). Scandinavian journal of work, environment & health . http://dx.doi.org/10.5271/sjweh...
Physiopathologie du syndrome de Raynaud d'origine vibratoire
Près d'un salarié sur cinq déclare être exposé aux vibrations au moins un quart de son temps de travail dans l'Union européenne. Le syndrome des vibrations main-bras susceptible d'en résulter est une pathologie complexe, dont la physiopathologie n'est pas encore totalement connue, associant des signes neurologiques, vasculaires et/ou ostéo-articulaires. Des travaux de recherche visent à mieux connaître la relation entre l'exposition aux vibrations mainbras et leurs effets sur les troubles angioneurotiques du...
Influence des efforts de poussée-préhension et des gants anti-vibratiles sur le transfert des vibrations à la main
Un dispositif expérimental a été mis en place par l'INRS pour mesurer et analyser les effets mécaniques locaux des vibrations transmises au système main/doigts. Ce banc de cartographie d'accélération pourrait être utilisé pour tester et hiérarchiser les performances de solutions anti-vibratiles et celles de matériaux amortissants. Source: http://www.hst.fr/dms/hst/data/articles/HST/TI-NT-50/nt50.pdf
Caractérisation du syndrome du marteau hypothénarien chez les travailleurs utilisant des outils manuels et exposés aux vibrations main-bras
Les travailleurs utilisant des outils portatifs vibrants et/ou des outils manuels (sans vibrations) sont à risque de développer le syndrome du marteau hypothénarien (SMH) et s'exposent ainsi à de lourdes conséquences pour la santé, dont l'amputation des doigts. En effet, l'artère cubitale de la paume de la main est située en superficie et n'est pas suffisamment protégée par des tissus (par exemple, des muscles). Elle est ainsi particulièrement vulnérable aux coups et vibrations ainsi qu'aux traumatismes...
Les vibrations mains-bras
Plus d'un travailleur sur dix est régulièrement exposé aux vibrations transmises aux membres supérieurs. Celles-ci peuvent être responsables de lésions graves et irréversibles. Ces dernières années ont été marquées par la simplification de l'évaluation des risques et le développement de solutions de prévention. Source: (2016) Travail et sécurité , (778) http://www.travail-et-securite.fr/ts/dossier/.html
Étude en laboratoire d’un système de faible coût permettant de mesurer les forces de couplage à l’interface main-poignée d’outils portatifs vibrants
L'évaluation de l'exposition aux vibrations transmises au système main-bras et des lésions qui peuvent en résulter lors de l'utilisation d'outils portatifs motorisés repose actuellement sur les principes directeurs de la norme ISO 5349-1. Les dispositions de la norme ne tiennent pas compte, cependant, de l'effet des forces de couplage à l'interface main-poignée, alors que de nombreuses études ont démontré l'importance de ces forces dans la transmission des vibrations au système main-bras. Cela...
Transcriptional Pathways Altered in Response to Vibration in a Model of Hand-Arm Vibration Syndrome
Objective: The aim of this study was to use an established model of vibration-induced injury to assess frequency-dependent changes in transcript expression in skin, artery, and nerve tissues. Methods: Transcript expression in tissues from control and vibration-exposed rats (4h/day for 10 days at 62.5, 125, or 250?Hz; 49m/s2, rms) was measured. Transcripts affected by vibration were used in bioinformatics analyses to identify molecular- and disease-related pathways associated with exposure to vibration. Results: Analyses revealed that cancer-related pathways showed frequency-dependent changes in...
A critical review of evidence related to hand-arm vibration syndrome and the extent of exposure to vibration
This report describes a systematic literature review on the nature of the exposure-response relationship between hand-transmitted vibration and the elements of hand-arm vibration syndrome (HAVS), ie the vascular, neurosensory and musculoskeletal components. Annex C of ISO 5349-1:2001 contains an exposure-response relationship for vascular HAVS, yet this review of the literature has not found any strong evidence of a precise quantitative relationship between exposure to vibration and health outcomes, either for vascular or neurosensory HAVS. There is some evidence that suggests possible limited...
Relationships of neurosensory disorders and reduced work ability to alternative frequency weightings of hand-transmitted vibration
Objective: This cohort study aims to compare the performance of alternative frequency weightings of hand-transmitted vibration (HTV) for the assessment of the exposure–response relationships for neurosensory disorders and reduced work ability among HTV-exposed workers. Methods: In a 3-year follow up study, the occurrence of neurosensory symptoms and reduced work ability, and the response to quantitative sensory testing (grip force, manipulative dexterity, touch sensation) were investigated in 249 HTV-exposed workers and 138 healthy controls. Among the HTV-exposed workers, the sensory outcomes...
Caractérisation du syndrome du marteau hypothénarien chez les travailleurs utilisant des outils manuels
Les travailleurs utilisant des outils portatifs vibrants et/ou des outils manuels (sans vibrations) sont à risque de développer le syndrome du marteau hypothénarien (SMH) et s'exposent ainsi à de lourdes conséquences pour la santé, dont l'amputation des doigts (Thompson et House, 2006; Honma et collab., 2000; Kaji et collab., 1993). En effet, l'artère cubitale de la paume de la main est située en superficie et n'est pas suffisamment protégée par des tissus (par exemple, des muscles). Elle est ainsi particulièrement...
Predicting and controlling risks from human exposures to vibration and mechanical shock
Flag waving and flag weaving At work or in leisure activities, many people are exposed to vibration or mechanical shocks associated with risks of injury or disease. This paper identifies information that can be used to decide whether there may be a risk from exposure to hand-transmitted vibration or whole-body vibration and shock, and suggests actions that can control the risks. The complex and time-varying nature of human exposures to vibration and shock, the complexity of the different disorders and uncertainty as to the mechanisms of injury and the factors influencing injury have prevented the...
Outils vibrants
Paramètres biomécaniques et sensorimoteurs affectant la réponse biodynamique du système main-bras L'exposition aux vibrations est une préoccupation importante au regard de la prévention des troubles musculo-squelettiques aux membres supérieurs. Les vibrations main-bras sont spécifiquement reconnues pour être la cause du syndrome des vibrations, une maladie atteignant les doigts et la main en matière vasculaire, musculo-squelettique et neurosensoriel. De longues durées et de fortes intensités de vibration peuvent...
Associations of work activities requiring pinch or hand grip or exposure to hand-arm vibration with finger and wrist osteoarthritis
A systematic review Objective : We systematically reviewed the epidemiologic evidence linking finger and wrist osteoarthritis (OA) with work activities requiring pinch or hand grip or exposure to hand-arm vibration. Methods : PubMed and Embase databases were searched up to June 2013. We selected studies providing quantitative risk estimates of radiographic diagnosed finger and/or wrist joint OA (hand OA) in relation to work activities involving pinch or hand grip or exposure to hand-arm vibration. We used specific criteria to evaluate completeness of reporting, potential confounding, and bias....
Retrofit anti-vibration devices
A study of their effectiveness and influence on hand-arm vibration exposure This project set out to try to determine what benefits, if any, could be gained in terms of reducing vibration exposure by retrofitting different types of anti-vibration device to different hand-held machines. Four types of device were selected for laboratory investigation: anti-vibration handles, spring balances/tensioners, a vibration reducing flange and chisel sleeves. The results from all the different devices used in this project, with the exception of the chisel sleeves, demonstrated that an end user cannot be confident...
Calculette vibration mains bras
Cette calculette au format Excel permet d'évaluer l'exposition quotidienne aux vibrations transmises aux membres supérieurs. Sans avoir besoin de réaliser des mesures complexes, elle permet d'estimer rapidement l'exposition vibratoire journalière transmise par les machines portatives ou guidées à la main, et ceci même si l'opérateur utilise plusieurs équipements dans une même journée. Les résultats donnés par la calculette permettent de situer les niveaux d'exposition d'un opérateur...
Comparative analysis of exposure limit values of vibrating hand-held tools
In the European Union, one of every four workers claims to be exposed to vibration for up to 2 h of his/her working day. The use of vibrating hand-held tools is the most common cause of vibration-related injury in workers. Of all sectors of professional activity, the construction industry has the highest number of workers affected by vibration. European Directive 2002/44/EC on the minimum health and safety requirements regarding worker exposure to risks from physical agents (e.g. vibration) limits exposure to vibration. This study analysed the exposure level of construction workers to hand-arm...
Nodal control of grass trimmer handle vibration
Imposing node technique is applied to the grass trimmer shaft in order to achieve very low vibration (node) at the handle location. The optimum tuning frequencies of the two tuned vibration absorbers (TVAs) attached at 0.74L and 0.85L along the shaft of the grass trimmer are determined using the imposing node technique. Transverse deflection, experimental modal analysis and operating deflection shape analysis of the grass trimmer were carried out, and the results indicated that nearly zero deflection (node) was induced at the position very close the loop handle location. Moreover, the vibration...
Comparative analysis of exposure limit values of vibrating hand-held tools
In the European Union, one of every four workers claims to be exposed to vibration for up to 2 h of his/her working day. The use of vibrating hand-held tools is the most common cause of vibration-related injury in workers. Of all sectors of professional activity, the construction industry has the highest number of workers affected by vibration. European Directive 2002/44/EC on the minimum health and safety requirements regarding worker exposure to risks from physical agents (e.g. vibration) limits exposure to vibration.This study analysed the exposure level of construction workers to hand-arm vibration...
An ongoing challenge to increase workplace awareness and attention to the risks of vibration exposure
Although the risks associated with vibration exposure have been known for a long time, the importance of risk prevention has increased in Europe since the implementation of the Machine Directives in 1989 (1989/392/EC) and the Vibration Directive in 2002 (2002/44/CE). These Directives challenged manufacturers to design low-vibration tools, and employers to manage the site specific risks of vibration exposure. Field experience has shown that many companies using vibrating tools have never carried out a risk-management program, and that they continue to ignore their responsibilities in the Vibration...
Uptake and quality of health surveillance for hand-arm vibration and noise exposure - A telephone based survey among dutyholders
Health surveillance (HS) is the systematic supervision of workers looking for early signs of work-related ill health in employees exposed to certain hazards. Health surveillance for hand-arm vibration (HAV) is largely based on the collecting of appropriate symptoms in individual workers, while quantitative pure-tone audiometry is a large element of HS activity for noise. This report details a telephone-based questionnaire study on the uptake and quality of HS for the hazards of noise and HAV. The study was undertaken during 2009-2010 and was centred on an agreed number of industry sectors, where...
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...
The vibrotactile perception threshold changes were greatest after simultaneous exposure to both WBV and HAV
This article presents the results of laboratory tests on the combined effect of whole-body vibration (WBV) and hand–arm vibration (HAV). The reactions of subjects exposed to various combinations of vibration were recorded. The vibrotactile perception threshold (VPT) test identified changes caused by exposure to vibration. Ten male subjects met the criteria of the study. There were 4 series of tests: a reference test and tests after exposure to HAV, WBV, and after simultaneous exposure to HAV and WBV. An analysis of the results (6000 ascending and descending VPTs) showed that the changes in...
Characterization of Frequency-Dependent Responses of the Vascular System to Repetitive Vibration
Objective: Occupational exposure to hand-transmitted vibration can result in damage to nerves and sensory loss. The goal of this study was to assess the frequency-dependent effects of repeated bouts of vibration on sensory nerve function and associated changes in nerves. Methods: The tails of rats were exposed to vibration at 62.5, 125, or 250 Hz (constant acceleration of 49 m/s2) for 10 days. The effects on sensory nerve function, nerve morphology, and transcript expression in ventral tail nerves were measured. Results: Vibration at all frequencies had effects on nerve function and physiology...
12e conférence internationale 'effets sur l'homme des vibrations transmises par les machines tenues ou guidées à la main'
Co-organisée par les homologues canadiens et américains de l'INRS et des universitaires, cette conférence a rassemblé à Ottawa (Canada) en juin 2011 une centaine d'experts d'Amérique, d'Asie et d'Europe. En introduction du congrès, les organisateurs ont demandé à l'INRS de faire le point sur l'évolution de la prévention des vibrations ces 40 dernières années en Europe. La soixantaine de communications concernaient la clinique, les effets physiologiques et biodynamiques, l'épidémiologie...
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