What type of exhaust system specifically helps control exposure to welding fume?

A Local Exhaust System is designed specifically to control exposure to welding fumes by removing harmful contaminants directly from the source, such as the weld zone, before they can disperse into the work environment. This type of system includes components such as hoods, ductwork, and blowers to effectively capture and exhaust the fumes, thus minimizing the inhalation risk for welders.

In contrast, a Portable Ventilation System is generally used in temporary settings and may not be as effective in consistently removing fumes from the source. A General Exhaust System provides overall air exchange in a space but typically does not target the specific areas where welding fumes are generated, which can lead to inadequate removal of hazardous materials. A Direct Vent System might redirect harmful gases outside, but it does not focus specifically on fume collection at the source, making it less effective for managing welding fume exposure compared to a Local Exhaust System.