Page 53 - CNG/ LNG ESP Participant Guide 2024
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Module 6: CNG Depressurizing and Defueling
Lesson 6.5: Safety Practices When Defueling CNG Vehicles
Always Follow ▪ Each defueling system is different
Manufacturer ▪ Always follow specific procedures for defueling provided by your system manufacturer
Procedures
Only Defuel Defueling may only be performed outdoors.
Outdoors
Avoid Ignition Never perform defueling while smoking, or in the presence of other ignition sources.
Sources
Notify Other When defueling a CNG vehicle, you should notify your co-workers or others in the area
Workers so they are aware of the process and can maintain a safe distance from the defueling
event.
Grounding is Vehicles being defueled MUST be grounded to earth.
Required
Personal Protective At a minimum, you should wear safety glasses when defueling CNG vehicles.
Equipment Your company may have other PPE requirements.
Fire Extinguishers Fire extinguishers should be present in the defueling area and the person performing the
defueling should be trained in how to use them.
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