Vehicle Service Bays & Fire Stations
Mechanic facilities, fire stations, tire shops, oil-change stations, bus depots, and other vehicle or fleet maintenance bays have special exhaust gas hazards. Employees typically drive cars and trucks into an enclosed space where they can be serviced or repaired. While the vehicles are not typically running for a long period of time, the fact that vehicles may have inconsistent maintenance history or may be in disrepair makes the exhaust gas concentration difficult to predict.
The main hazardous components of these exhaust gases are carbon monoxide (CO) and nitrogen dioxide (NO2). These areas should be monitored by appropriate CO and NO2 sensors that will activate exhaust ventilation, alert employees when hazards cannot be cleared by ventilation, and ensure that employee exposure is always below the relevant permissible exposure limits.
If your facility services compressed natural gas vehicles (CNG) a methane sensor is also recommended to detect any leakage of combustible gas from the tank of a vehicle being serviced.
Relevant Code Citations:
Varies by local code enforcement interpretation. Most local agencies will view these areas as and apply codes similar to enclosed parking garages of enclosed loading docks.