Where must the ventilation system in repair garages be controlled?

The ventilation system in repair garages must be controlled at the entrance to the garage to ensure the safety and health of workers and customers inside the facility. This location allows for effective management of airflow and the removal of harmful fumes or gases produced by vehicles. By controlling ventilation at the entrance, operators can help to quickly circulate fresh air into the garage while simultaneously expelling contaminated air, reducing the risk of harmful concentrations of carbon monoxide or volatile organic compounds accumulating inside the workspace.

Controlling ventilation at the entrance rather than within the garage or at other locations ensures that the air quality is monitored and adjusted as vehicles enter or leave. It allows for a proactive approach to managing potential hazards associated with vehicle repairs, such as the escape of exhaust fumes during idle periods.

Furthermore, managing ventilation at the roof level tends to be less effective for immediate air quality concerns, as it does not address the level of exposure that workers may face in the garage itself. In summary, controlling the ventilation system at the entrance creates a safer environment for personnel and promotes better overall air quality within the garage.