Being Proactive about Weld Fume Control

 

Keeping welding fumes to a minimum in the shop is essential for protecting people, property

and productivity.

 

There are several proactive steps you can take to ensure that your fume extraction equipment

is doing the best possible job.

 

• Schedule regular inspections and perform periodic service. Verify that dampers are in position, valves are working and pulse cleaning systems are functioning properly. Check pressure drop on filters to make sure it has not exceeded the manufacturer's recommended limit. Check compressed air pressure and purge the compressed air header, looking for signs of moisture. If you are located in a cold climate, make sure that your compressed air has a dew point that is below the lowest temperatures your equipment will be exposed to.
• Test your dust. If you're having issues or complaints, bring in an environmental engineer to perform air sample testing. This will allow you to pinpoint what pollutants are occurring and to determine whether you are below OSHA PEL thresholds. Also, if you haven't tested your dust for flammability and explosivity, NFPA guidelines call for you to do so. An environmental engineer or your fume collection equipment supplier can connect you with a lab that specializes in explosion testing.
• Find a qualified equipment supplier. If you are performing preventive inspections and basic maintenance but still encountering problems, chances are the fume extraction system is undersized or inadequately designed for the application. Bring in an air pollution control supplier who is experienced in welding filtration system applications; who is knowledgeable about OSHA, NFPA and EPA requirements; and who has the technical resources to develop an engineered solution to the problem. This supplier should also offer a full range of equipment so as to offer unbiased advice on the right type of system for your shop.