Occupational Health Research at NIOSH The National Institute for Occupational Safety and Health (NIOSH) is the U.S. federal agency that conducts research and makes recommendations for preventing work-related injuries, illnesses, and deaths.1 The work by NIOSH protects the safety and health of the nation’s 155 million workers.2 NIOSH provides the only dedicated federal investment for research ne...

Welding fume is generated during welding activities and a known cancer-causing hazard for those working in the industry. Worker exposure has been shown to regularly exceed applicable workplace standard, control measures are required reduce worker exposure. The aim of this study compare effectiveness prevent workers. To achieve aim, three common (local exhaust ventilation (LEV), powered air puri...

The influence of welding arc regime on the fumes formation is studied by numerical modeling via description separate processes inside space charge regions near electrodes in with consumable electrode. comprises calculation temperature profiles for electrons and heavy component, distribution gas components’ number densities, particles’ mean free pathes, electric potential field, heat transfer fr...