LEV

(LEV), or local exhaust ventilation is an important device to use in factories or any workplace where they are toxic fumes and or saw dust and fine particles in the air. This device acts as a huge vacuum sucking up and filtering the debris to a box outside the building or factory.  However, having the fan on while you are running you equipment is not the only thing you have to do to insure that it works effectively. The worker must make sure that the ventilation hood or pipe is placed around one and a half feet away from the work station, or the width of the tube. If the workers are still not sure have them watch the smoke or debris and see if all of it is being sucked up in the tube. This method also works best if the tube can be laid down on the table and placed at and angle, as having it right about your head will make the debris come into the breathing zone. One common mistake that people make is not using a local exhaust ventilation system when they are welding or working outside. Working outside does decrease your exposure but you still run the risk of inhaling toxic fumes still or other hazardous particles. This is why it is still recommended to use a local exhaust ventilation system while working outside. If you have a tent set up outside this is applies as well. Some consequences of not using a local exhaust ventilation system including lung scaring, asthma, and even cancer. With the local exhaust ventilation system you need to make sure that your suction is high enough that it catches all of the debris otherwise you need to relocate it closer or get a unit that has higher air flow.