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Hydrogen storage tanks: testing, certification, codes & standards

Updated: Nov 6, 2022



High-pressure tanks (250 bar) have been used safely in compressed natural gas vehicles for many years. Improved versions of these tanks made of high-strength composite materials are now used to store hydrogen at higher pressures (350 and 700 bar) to achieve a greater range in hydrogen-fueled mobility. High-pressure hydrogen tanks are designed not to rupture and are held to rigorous performance requirements. This article summarizes major regulations, codes, and standards in different aspects of hydrogen tank storage. The article further dives into the testing and certification process of hydrogen tanks.

Regulations, Codes, and Standards (RCS)

There has been extensive work evaluating regulations, codes, and standards (RCS) for the emerging fuel cell market, such as the infrastructure required to support fuel cell electric vehicles. However, there has not been a similar RCS evaluation and development process for these larger systems. This section highlights the key ideas behind RCS.


  • Legally binding, developed through a national administrative process or international agreement

  • Typically incorporate by reference safety codes and standards

  • Developed in advance of commercialization to protect public safety