Industrial Utility Efficiency    

Metals

One topic up for discussion in the metal fabrication industry is the assist gas used for laser cutting. The assist gas is fed into the laser head, and surrounds the laser as it cuts the work piece. The assist gas is intended to facilitate a smoother cut, increase cutting speeds and productivity, and to prevent discoloration, oxidation, scale, burred edges and other defects that can arise from the hot cutting temperatures. Since Nitrogen is an inert gas, it is used as an assist gas on many laser cutting systems to prevent oxygen from coming into contact with the metal while it’s being cut. Nitrogen is supplied to users in traditional cylinders, and with on-site nitrogen generation.
This steel processing facility has been operating for over one hundred years.  This facility is part of a large corporation with numerous plants around the world.  This audit focused on the compressed air system on one side of the Works which we will call the “North Plant”.