Natural Gas Vehicle Institute (NGVi)

Natural Gas Vehicle Institute (NGVi)

NGV Essentials and Safety Practices Training



With a focus on safety, this one-day course teaches technicians and support team members the fundamentals of working with natural gas as a vehicle fuel and both CNG and LNG fuel systems. Natural gas behaves differently than gasoline or diesel fuels and, on CNG vehicles, portions of the fuel system operate at extremely high pressures (3,600 psi). LNG vehicles use cryogenic (-260 degrees Fahrenheit) fuel systems. While both types of fuel systems are very safe, they require unique components and special safety procedures for all levels of routine maintenance, diagnostics and repair.

  • Technicians who will perform basic preventive maintenance on natural gas vehicles (oil changes, tire rotations, etc.)
  • Technicians who will perform mandated CNG fuel system inspections
  • Technicians who will perform NGV diagnostics and repair procedures
  • All employees involved in NGV fleet operations
  • Fleet or dealer service managers and supervisors
  • Corporate/agency safety managers
  • Risk management staff

  • Describe the properties and characteristics of natural gas.
  • Identify the differences between natural gas and gasoline and diesel fuels.
  • Identify all major low- and high-pressure CNG and LNG fuel system components; describe their operation and safety features.
  • Describe the differences between dedicated, bi-fuel, and dual-fuel NGVs.
  • Identify and employ safety precautions and techniques when servicing natural gas powered vehicles.
  • Be familiar with CNG and LNG fueling station equipment, safety devices, operation and fueling procedures.
  • Identify CNG and LNG defueling methods and the related safety precautions.

  • Module 1: Properties and Characteristics of Natural Gas
  • Module 2: Function and Operation of CNG Fuel System Components and Safety Procedures
  • Module 3: CNG Fueling Station Equipment and Operation
  • Module 4: CNG Depressurizing and Defueling
  • Module 5: Liquefied Natural Gas (LNG) and LNG Vehicles
  • Module 6: LNG Fueling and Defueling

Instructional staff members of colleges, universities, private training organizations, fleets, dealers or manufacturers are not candidates for this course, but have numerous options for bringing NGVi’s training classes to their campuses or facilities.

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