Upgrading vehicle maintenance facilities to safely accommodate natural gas, hydrogen, or propane service can be a deciding factor in whether an organization chooses to adopt one of these fuels for its fleet. Upgrading a garage for code compliance can be confusing, unnecessarily expensive, and time consuming.

GTI developed in-person workshops and online resources that guide how to upgrade maintenance garages for natural gas, hydrogen, and propane service. The workshops cover important topics, including gas detection, emergency ventilation, heating, alarm systems, and a review of fuel properties.

If you are interested in an online or in-person workshop, please contact altfuelgarageworkshops@gti.energy.


Bus and heavy-duty maintenance garage

Workshops include a half-day of classroom activity and learning tools, followed by a visit to an actual garage to see a completed upgrade or one in progress.

Materials from past workshops, reports, videos, case studies, best practices, and strategies for cost-effective code compliance are available on this website.



• Garage owners
• Fleet managers
• Safety officers
• Fire marshals
• Authorities having jurisdiction



Natural Gas
Clean Energy – Facilities Modification Services
Frontier Energy
Superior Energy Systems


CNG Vehicle Maintenance Garage Training
August 7, 2019
Hilton Garden Inn: NW American Plaza
Houston, TX 77040

  • Summarize applicable codes for NGV garages
  • Explain the Detect, Dilute, Extract strategy
  • Make recommendations on how to execute the strategy
  • Review additional recommended safety measures

Alternate Fuel Maintenance Facility General Diagram

Natural Gas, Propane, and Hydrogen fuels

Hover over each equipment name to view its photo.