Welding department redesign and upgrade for controlling welding fumes in a vocational college in Eastern Tennessee.
Exhaust fan and canopy hoods for each weld station. Homemade grinding bench.
Students’ breathing zone was not protected as the weld smoke would rise to the canopy hood through the breathing zone. Not enough air flow to adequately capture weld smoke and grinding dust.
Air Purification Inc. recommended a Micro Air Model RP8-2 12,000 CFM cartridge collector, 12 Airflow Systems telescoping source capture arms for each welding booth, and three Airflow Systems E-Z arms for their larger work tables. One E-Z Arm installed with 10′ boom arm for reaching throughout open area in the welding lab. By using source capture arms, the students no longer have to breathe the welding fumes. Arms are positioned as needed to completely protect their breathing zone.
Additionally, three spark arrestors were installed in the duct work before the RP8-2 collector for added safety and fire protection. Exhaust from the RP8-2 collector is ducted with a “y” valve. This allows us to return the clean heated air in the wintertime to the welding lab, saving the school on heating expenses. This valve also allows us to keep the air outside during the summer months. In addition to the weld smoke system, Air Purification, Inc. also installed an Airflow Systems downdraft table for their grinding applications. The downdraft table is split in half with a dividing wall, allowing two students to grind at the same time on the same table.
This complete system will keep the welding lab safer and looking new and clean. All equipment used in this school is heavy duty industrial air cleaning equipment. Their students are now being exposed to the same equipment they will be using in a welding position.