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Aide au choix d'un dispositif de protection sensible
Aide-mémoire technique Le risque mécanique est indissociable de l'utilisation d'une machine fixe. La mise en place de mesures de prévention peut mener l'utilisateur ou le concepteur à mettre en place des dispositifs de protection sensibles (SPE) soit dès la conception, soit a posteriori sur les machines en service. Afin d'aider les utilisateurs et les concepteurs à choisir une solution adaptée à leur besoin, ce document présente une méthode de choix de ces équipements. Il propose également des informations...
Forklift truck reverse sensor systems assessment
Counterbalance forklift trucks (FLTs) are widely used in a variety of industry sectors for material handling. Incidents involving FLTs are typically vehicle/pedestrian, vehicle/vehicle, or vehicle/structure collisions. Of these, vehicle/pedestrian incidents have the most potential for reportable injury and around 500 incidents a year involving moving FLTs are reported to HSE. Measures to improve or augment the operator's field of vision can include: mirrors and CCTV systems (which rely on the operator's observations) and sensor systems (including ultrasonic, radar, and Radio Frequency Identification...
Méthode de choix d'un dispositif de protection sensible pour sécuriser une machine
Pour réduire les risques mécaniques liés à l'utilisation des machines fixes, l'utilisateur ou le concepteur peut avoir recours à des équipements de protection sensibles. Mais comment faire son choix parmi tous les dispositifs disponibles? Une méthode mise au point par l'INRS offre des éléments de réponses pour sélectionner la protection la mieux adaptée à la mise en sécurité de la machine. Source: Thiay, David (2016). Hygiène et Sécurité du Tra vail, 242, 52...
Prévenir les collisions engins-piétons
Dispositifs d'avertissement Afin de réduire le nombre d'accidents de personnes à proximité des engins mobiles, certaines mesures techniques comme l'implantation de détecteurs de personnes peuvent s'avérer nécessaires. Ce guide propose une démarche pour définir le besoin avant toute installation d'un système de détection puis présente cinq technologies de détection : ultrasons, marqueurs radioélectriques, analyse d'images, radar, laser. Source: http://www.inrs.fr/media.html?refINRS...
On the use of low-cost radar networks for collision warning systems aboard dumpers
The use of dumpers is one of the main causes of accidents in construction sites, many of them with fatal consequences. These kinds of work machines have many blind angles that complicate the driving task due to their large size and volume. To guarantee safety conditions is necessary to use automatic aid systems that can detect and locate the different objects and people in a work area. One promising solution is a radar network based on low-cost radar transceivers aboard the dumper. The complete system is specified to operate with a very low false alarm rate to avoid unnecessary stops of the dumper...
Sécurité des équipements de travail : prévention des risques mécaniques
Ce document traite des mesures de prévention contre les risques mécaniques. Il a pour objet de faciliter leur choix. Il présente des exemples de moyens de protection connus à ce jour, dont on peut s'inspirer pour supprimer ou réduire les risques mécaniques engendrés par les machines. Les deux premiers chapitres de ce recueil reprennent les principales définitions et résument la démarche à suivre pour le choix des mesures de prévention. Les troisième et quatrième chapitres sont dédiés...
Balancing the Pros and Cons of Machine Guarding Technologies
Despite having been introduced in the 1950s, safety mats remain an effective tool in machine guarding programs. The down home American adage, "If it ain't broke, don't fix it," seems like it must date back to colonial times. In fact, the phrase was popularized in the 1970s, but its widespread use makes it seem older than it really is. In that sense, the phrase is a bit like safety mats. Introduced in the 1950s, safety mats became such a common tool in industrial machine guarding that some people believe they date back to the Industrial Revolution. Not quite. Despite the introduction...
Robotic testing of radio frequency devices designed for industrial safety
An experimental setup is proposed to test the performance of safety devices based on radio frequency technology. The setup specifically tests devices designed for improving safety in dangerous areas of small size, such as those surrounding power press brakes. Tested here is a radio frequency identification (RFID) prototype, whose main objective is to prevent accidents by sending a stop signal to a machine when a worker's wrist, bearing an RFID tag, gets too close to the dangerous area. An ABB IRB 2400L robot is used as a reference system; this system is capable of providing millimeter accuracy...
Robotic testing of radio frequency devices designed for industrial safety
An experimental setup is proposed to test the performance of safety devices based on radio frequency technology. The setup specifically tests devices designed for improving safety in dangerous areas of small size, such as those surrounding power press brakes. Tested here is a radio frequency identification (RFID) prototype, whose main objective is to prevent accidents by sending a stop signal to a machine when a worker's wrist, bearing an RFID tag, gets too close to the dangerous area. source:Safety Science, volume 50, issue 7 http://www.sciencedirect.com/science/article/pii/S0925753512000823
A visual warning system to reduce struck-by or pinning accidents involving mobile mining equipment
This paper describes an experiment to examine whether a visual warning system can improve detection of moving machine hazards that could result in struck-by or pinning accidents. Thirty-six participants, twelve each in one of three age groups, participated in the study. A visual warning system capable of providing four different modes of warning was installed on a continuous mining machine that is used to mine coal. The speed of detecting various machine movements was recorded with and without the visual warning system. The average speed of detection for forward and reverse machine movements was...
The internet of things (IOT) and cloud computing (CC) based tailings dam monitoring and pre-alarm system in mines
Tailings disposal is a significant consideration for the mining industry, with the majority of the ore processed in most mining operations ending up as tailings. Several tailings dam failure accidents have occurred during the past few years and mine tailings dam failures, which are disastrous with the serious damage and the loss of lives, are occurring at relatively high rates. To improve the tailings dam safety, a tailings dam monitoring and pre-alarm system (TDMPAS) based on the internet of things (IOT) and cloud computing (CC) is accomplished with the abilities of real-time monitoring of the...
Mobile Equipment Safety System
Many workplace fatalities and serious injuries occur when workers are struck by or caught in heavy mobile equipment, such as forklifts, log loaders, dump trucks and bulldozers. A key factor is the poor visibility that equipment operators often have, which makes it difficult to see people on the ground. This project developed a wireless system that can detect and issue warnings when a machine approaches workers or certain objects, and shut down or slow the machinery if it gets too close. In year one, the sensor technology was refined, and a prototype of the device was built, installed in a forklift...

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