Osha Sampling For Welding Fumes. Prolonged exposure to welding fume may. All sampling results were below applicable OELs except for noise and MWFs.
When welding with a zinc-bearing base or filler metal OSHA requires employers to provide general or local exhaust ventilation systems. The health effects of welding fumes have been studied for a long time and great effort has been made to mitigate exposure to welding fumes. March 58 2007 to sample for acid mists MWFs elements from welding fumes and CrVI from chromic acid.
Typically sampling is performed according to 8-hour work shifts when comparing results to Occupational Safety and Health Administration OSHA exposure limits.
The following excerpt was taken from the OSHA Technical Manual Section II. And review the companys written health and safety programs. Therefore sampling should be done as normally would be done for any other contaminant ie in the breathing zone outside the ensemble. Many employees do not perform welding for the entire duration of their work shifts so it is important to know the length of time welders actually perform welding.