Vehicle Training Level 2 CNG Fuel System Inspector Training

Ensuring integrity of CNG fuel systems is a vital part of NGV safety.

While the National Highway Traffic Safety Administration (NHTSA) requires all on-board CNG storage cylinders to be visually inspected every three years or 36,000 miles, whichever comes first, or following any accident or fire, NGV industry best practice calls for inspection of the entire CNG fuel system. CNG fuel system inspections must be conducted by well-trained and qualified technicians.

Attending NGVi’s two-day CNG Fuel System Inspector Training:

  1. Helps ensure technicians are adequately trained to properly conduct CNG fuel system inspections according to all current codes and standards.
  2. Helps prepare technicians for the CNG Fuel System Inspector Certification Exam.

CNG Fuel System Inspector Certification Exam

Want maximum protection? NGVi’s CNG Fuel System Inspector Certification Exam delivers a rigorous, independent assessment of the knowledge, competency, and application of skills necessary for technicians to properly conduct CNG fuel system inspections, according to all applicable codes, standards, and industry best practices.

NGVi’s certification exam can be taken in conjunction with any CNG Fuel System Inspector training course. For more information, click here.


Level 1:  NGV Essentials and Safety Practices

Select a Course:

Riverside, CA December 5, 2018 Register
Scottsdale, AZ January 30, 2019 Register
Nashville, TN   Registration Coming Soon! February 27, 2019 Coming Soon!
Houston, TX   Registration Coming Soon! March 27, 2019 Coming Soon!

Who Should Attend:

  • Technicians responsible for performing CNG fuel system inspections
  • Technicians preparing to take the CNG Fuel System Certification exam
  • Technicians planning to renew their CNG Fuel System Certification
  • Experienced NGV technicians looking to refresh knowledge on CNG fuel system inspections
  • Fleet managers and supervisors
  • Corporate/agency safety managers
  • Risk management staff

Course Objectives:

  • Describe the properties and characteristics of natural gas.
  • Identify the four types of CNG cylinders, their construction methods, certification requirements, current and past manufacturers.
  • Identify the causes of cylinder failure.
  • Identify all codes and standards that apply to CNG cylinders and other fuel system components.
  • Identify all CNG high-pressure components and their purposes.
  • Identify and assess CNG cylinder and fuel system installations.
  • Interpret all information from a CNG cylinder label.
  • Describe the steps and methods to safely perform a CNG fuel system inspection in conformance with established standards.
  • Describe the final disposition process for CNG cylinders and fuel system components.
  • Describe the defueling options for CNG powered vehicles.

Course Outline:

Module 1 Introduction
Module 2 Properties and Safe Handling of Natural Gas
Module 3 NGV Codes and Standards (Overview)
Module 4 CNG Fuel System Components
Module 5 How to Inspect the Fuel Receptacle
Module 6 How to Inspect the Secondary Check Valve
Module 7 How to Inspect the Defueling System
Module 8 How to Inspect Cylinders and Shields
Module 9 How to Inspect Cylinder Valves, PRDs, and Vent Lines
Module 10 How to Inspect the Fuel System Isolation Valve
Module 11 How to Inspect the High-Pressure Coalescing Filter
Module 12 How to Inspect the Automatic Shutoff Solenoid Valve
Module 13 How to Inspect the Pressure Gauge
Module 14 How to Inspect the Pressure Regulator
Module 15 How to Inspect Fuel Lines
Module 16 Labeling (Other than Cylinder Labeling)
Module 17 Fuel System Final Disposition and Cylinder Disposal
Module 18 Safe Defueling Methods
Module 19 Cylinder Inspection Workshop


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. For more information, contact us at 800-510-6484.