Safety Precautions
Danger: Natural gas is highly flammable. Failure to observe the following safety precautions could lead to the ignition of the natural gas, which could cause serious bodily injury or death.
Follow these safety precautions when operating or repairing a natural gas vehicle.
-
Do not start the engine if a natural gas leak is detected.
-
Never cut or weld on the CNG fuel cylinders. Severe bodily injury or fire could result.
-
Do not transfer CNG from one vehicle to another, as a buildup of static electricity could cause a spark and ignite the fuel.
-
Do not attempt to cut any fuel supply piping components.
-
CNG is highly flammable. Avoid open flames or sparks near a natural gas vehicle.
-
Permit no smoking or other ignition sources within thirty feet of a natural gas vehicle.
-
Have COv 2vfire extinguishers (ABC minimum) located in a highly visible and easily accessible location.
-
Always purge the fuel lines before performing maintenance or repairs on a natural gas fuel system. To purge the lines, close the manual fuel shutoff valve, and start the engine. Let the vehicle idle until the fuel lines are empty and the engine stops.
-
Always use a natural gas detector to test the system for leaks, whether an odor is present or not. Routinely inspect the fuel filtering and regulating mechanisms, and the fuel lines. A bubble solution can be used to pinpoint the exact location of leaks.
-
Always tighten fasteners and fuel connections to the required torque specification. Overtightening or undertightening could cause leaks.
-
Close the fuel shutoff valve(s) before performing maintenance and repairs.
-
Do not bring a natural gas vehicle indoors unless the workshop is equipped with a methane detection and ventilation system. Do not store a natural gas vehicle indoors for an extended period of time.
In Case of Emergency
If a vehicle has sustained damage or a leak has been discovered:
- Turn the ignition switch off, set the parking brake, and disconnect the battery.
- Remove all ignition sources from the area surrounding the vehicle.
- If it is safe to do so, close all fuel shutoff valves.
- Open the vehicle doors to introduce fresh air.
- Use a natural gas detector to identify leaks in the fuel system.