Final answer:
The best approach to reducing the risks associated with the hazard of high exposure to styrene in the paint department is to implement engineering controls, such as improving the ventilation system and installing local exhaust ventilation (LEV) systems.
Step-by-step explanation:
Based on the hazard scenario provided, the best approach to reducing the risks associated with the hazard of high exposure to styrene in the paint department of an automotive parts production facility is to use the hierarchy of controls outlined by OSHA. The hierarchy of controls consists of five levels: elimination, substitution, engineering controls, administrative controls, and personal protective equipment (PPE). In this case, the most effective control measure would be to implement engineering controls by improving the ventilation system in the small room where the parts cleaning is performed.
This can be achieved by installing local exhaust ventilation (LEV) systems to remove the contaminated air and bring in fresh air from outside, thereby reducing the concentration of styrene in the air. Additionally, ensuring that the room has proper sealing and insulation can prevent the ingress of outside air that may contain styrene.