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    CSA Group publishes recommended practice for CNG storage and delivery systems for road vehicles

    At the 2014 Clean Vehicle Education Foundation Critical Issues workshop, participants indicated that industry is lacking an up to date ‘best practices document’ for the design, installation, testing, and maintenance of compressed natural gas (CNG) fuel storage and delivery systems. Although the existing installation codes provide good minimum safety requirements, the representatives at the workshop felt a more comprehensive document would benefit industry.

    In 2016, a CNG fuel system standard was also included as a priority on the US Department of Energy and Natural Resources Canada’s Natural Gas Vehicle Work Plan in support of the Regulatory Cooperation Council.

    To meet this need, CSA Group recently published a bi-national recommended practice, CSA NGV 6.1 Compressed Natural Gas (CNG) fuel storage and delivery systems for road vehicles, for the North American natural gas vehicle industry. NGV 6.1 provides a Failure Modes and Effects Analysis (FMEA) design approach with guidance and performance based design requirements for CNG fuel storage and delivery systems for road vehicles. 

    CSA NGV 6.1 complements CSA Group’s engagement with industry over the past three decades on CNG vehicle component issues including: research and development support, standards development, certification and testing, container inspection, and container end of life. The document provides guidance for the system designer and integrator that includes design requirements and process recommendations.

    “The release of CSA NGV 6.1 demonstrates the maturity and sustainability of the CNG vehicle market, and the commitment to quality and safety throughout the natural gas vehicle industry,” notes John Jordan, Technical Representative, Standards of Agility Fuel Solutions and Co-chair of CSA Group’s CNG Fuel storage and delivery system for road vehicles Technical Subcommittee (NGV 6.1). “This recommended practice was truly a collaborative effort from throughout our industry, including but not limited to participation from OEM manufacturers, component manufacturers and government regulators.”

    Dan Bowerson, Director, Technology and Development, NGV America and Co-chair of NGV 6.1 reiterates, “NGV 6.1 fills a gap that the NGV industry has been missing for years. By using system engineering practices and starting with a system level FMEA, the NGV 6.1 Technical Committee was able to focus on safety needs of the CNG fuel storage and handling systems. The Technical Committee developed a recommended practice that will be useful for companies or individuals involved in the design and installation of CNG systems and components.”

    Source: usgasvehicles

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