CGA C-6.4 Methods for External Visual Inspection of Natural Gas Vehicle (NGV) and Hydrogen Vehicle (HV) Fuel Containers and Their Installation

North America
United States
Application Type
  • Hydrogen & Fuel Cell Vehicle Applications
Compressed Gas Association
This publication provides information and procedures for the periodic visual examination and inspection of natural gas and hydrogen fuel containers and the condition of the installation. These containers are installed in vehicles qualified by the original equipment manufacturer (OEM) or aftermarket vehicle manufacturer to meet the following U.S. or Canadian standards: – ANSI NGV2, American National Standard for Natural Gas Vehicle Containers; – U.S. Department of Transportation (DOT) National Highway Traffic Safety Administration (NHTSA) FMVSS, Standard No. 304, Compressed Natural Gas Fuel Container Integrity; – Canadian Motor Vehicle Safety Regulations, Standard 301.2, CNG Fuel System Integrity; and – Canadian Standards Association (CSA) B51, Boiler, Pressure Vessel, and Pressure Piping Code.
Status Explanation
Published October 2012. Available at
Latest Published Date