Ventilation systems are almost always recommended as a method for collecting air contaminants created by laser cutting operations. Exhaust ventilation can protect workers from serious health hazards, control odors, and minimize cleanup problems. In fact, many laser systems come supplied with exhaust ventilation systems. The purpose of this paper is to review the important parameters necessary for designing exhaust ventilation systems, and to point out “new” considerations that must also be considered before such a system is installed. These “new” considerations involve the U.S. EPA, an agency that inspires respect for its purpose and fear for its regulatory power.
These “new” EPA issues are air pollution permitting and hazardous waste management. Generally, the amount of air contaminants created with laser cutting will be minimal in comparison to other methods, largely due to the accuracy of laser cutting. However, it is now more likely than ever that air pollution permitting and installation of control equipment will be necessary as part of any installation.
Since air pollution control devices collect and concentrate air contaminants, the collected materials must also be managed properly. If they meet EPA’s criteria, the materials must be considered hazardous waste, and need to be managed and disposed of in accordance with hazardous waste regulations.