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Welcome to the CNGchat Safety Forum

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  • Welcome to the CNGchat Safety Forum

    Natural gas vehicles and stations are extremely safe when established standards are followed. In the United States this industry has produced an admirable safety track record. Nevertheless, as CNG is an extremely high pressure gaseous fuel it is critical that all technicians working with this fuel be properly trained and certified and that all vehicles, components, and practices conform to established standards. At 3600 psi things can get very dangerous - very quickly!

    Codes & Standards
    In the United States the National Fire Protection Association publishes Pamphlet #52 -- the VEHICULAR GASEOUS FUEL SYSTEMS CODE which can be downloaded here for a small fee:

    As NFPA-52 is copyrighted we encourage members of our online community to quote only specific sections as applicable to the online questions posed. In addition, the State of Texas has its own CNG / LNG regulation which is not copyrighted, and can be found here:

    I have also attached a PDF version of the Texas regulation to this post. You will find that the Texas regulation closely meets NFPA-52 and is a useful reference for those who want to save the $50. Technicians outside of Texas who work on natural gas vehicles and station equipment are well advised to invest in NFPA-52, however, as many states have adopted this code as law:

    Technician Qualification
    Nationally, the CSA Standards group provides a certification path for technicians to be tested in natural gas vehicle safety and cylinder (tank) inspections. US Department of Transportation regulations require that CNG cylinders be inspected each 36,000 miles or 3 years, whichever comes first. To find a CSA certified technician near you head over to the CSA web site here:

    Some states (especially TX, OK) require technicians who work on NGVs and the automotive facility to be licensed. Other states including UT require CSA certification. Those who hold CSA credentials are welcome to join our private CSA forum at CNGchat where we discuss the code, proposed updates, and other technical matters. Please notify me or another Admin via a private message to open this up for you.

    There are many organizations which provide technician and operator training for NGVs. A good jumping off point in your search should be the Clean Vehicle Education Foundation, a lean non-profit organization which promotes NGVs and safety standards.

    Is my vehicle safe?
    A great reference to review the core safety elements of a natural gas vehicle is this video provided by the Utah Highway Patrol to its safety inspectors:

    We look forward to your questions here at the CNGchat Safety Forum. There are many experts who frequent here who will be able to provide insight from their collective decades of experience.
    Attached Files
    Last edited by John Mitton; 09-03-2012, 12:13 PM.