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Natural Gas Vehicle Cylinder Safety, Training and Inspection Program

Have Your CNG Cylinders Been Properly Inspected?
WHY DO MY CNG CYLINDERS NEED TO BE INSPECTED? WHAT IS A QUALIFIED CNG CYLINDER INSPECTION? WHERE CAN I FIND A QUALIFIED CNG CYLINDER INSPECTOR? HOW CAN I BECOME A CNG CYLINDER INSPECTOR? IS SCHOLARSHIP ASSISTANCE AVAILABLE?

Why do my CNG cylinders need to be inspected?

Like a gasoline-or diesel fueled-vehicle, a Compressed Natural Gas vehicle’s fuel system should be inspected periodically. In fact, the US Department of Transportation (FMVSS 304) requires this statement on the label of all CNG cylinders used on motor vehicles:

What is a qualified CNG cylinder inspection?

Inspections performed by service stations or state agencies may not include a detailed CNG cylinder visual inspection, as outlined in a standard developed by natural gas vehicle industry engineers. Following this standard, a qualified inspector will note cuts, cracks, gouges, abrasions, discoloration, broken fibers, loose brackets, damaged gaskets or isolators, heat damage or other problems and recommend proper action to assure fuel system safety.

A qualified inspector must have:

  • knowledge of the types of containers used in CNG vehicle systems, and damage allowances for each type, and
  • understanding of inspection requirements, tests, procedures, and
  • the container manufacturer’s current inspection guidelines readily available.

A qualified CNG cylinder inspector also must:

  • have a minimum of 2 years experience conducting container inspections, or
  • be supervised by someone with 2 years experience, or
  • be approved by the container manufacturer, or
  • be certified as an inspector by an organization with NGV training centers, an “authority having jurisdiction” or a nationally recognized certification testing organization.
Where can I find a qualified CNG cylinder inspector?

If your fleet does not have a qualified inspector, some CNG vehicle manufacturers, local gas utilities and cylinder manufacturers offer cylinder inspection services by qualified inspectors. If yours do not, a list of CSA-certified inspectors is available by clicking here. CSA is the only nationally recognized organization certifying CNG cylinder inspectors in the US and Canada. Key in your state or province name (spelled out, not abbreviated), hit “Search” and a list will come up. Click on a name for that person’s contact information.

How can I become a certified CNG cylinder inspector?

If you would like to be trained CNG cylinder inspector, these organizations provide training for the CSA certification test:

To become CSA America Certified inspector, certification tests are offered as a Computer-based exam at facilities located throughout the U.S. These facilities will provide on-demand exam sessions allowing the flexibility to take the exam when and where you choose.

For more information, please contact CSA America’s Personnel Certification Coordinator at 216-524-4990 or email personnel-certification@csa-america.org

Is scholarship assistance available?

Questions? – Call or email John Dimmick, Director of Technology, Clean Vehicle Education Foundation, 262-549-1894.


 

 

 





  
  

Documents of Interest
Critical Fall CNG Station Checks

SANDIA
REPORT

Guidelines for Maintenance Facility Modification

Advice for Preparing NGVs for Repair in Existing Liquid Fuel Maintenance Facilities

Advice to Owners of CNG Vehicles after Accidents

Safety Advice for Defueling CNG Vehicles and Decommissioning and Disposal of CNG Cylinders

Compressed Natural Gas Transit Bus Experience Study

Convert Your Vehicle to Compressed Natural Gas - Safely

Lessons from NGVs to the Hydrogen Vehicle Industry

NGV Cylinder Safety, Training and Inspection Program

Natural Gas Vehicle Codes and Standards

Available NGVs
and Engines

CNG Fuel System Inspector Study Guide

Considerations for building a Fuel Flexible Service Garage

Transit Users Group Series Hybrid WEBINAR

Fatal Accident Removing Cylinder Solenoid Valve

CNG Cylinder End of Life
CNG Cylinder Inspections
NFPA 52 2013 Announcement



Technical Bulletins

Tech Bulletin 1
PRDs
Tech Bulletin 2
Safety
Tech Bulletin 4
Container Inspection
Tech Bulletin 5
Comdyne Cylinder Safety Warning
Tech Bulletin 6
Safety Advisory
Tech Bulletin 7
Natural Gas Metering
Tech Bulletin 8
Failures of Stainless Steel Braid Hoses
Tech Bulletin 9
Service Pressure Safety Alert

Tech Bulletin 10
Reliable Temperature Compensation Is Critical to CNG Vehicle Safety



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Resources and Tools