Over the past few decades, gas companies have been developing a number of new gaseous mixtures for a vast array of applications in industries ranging from food to welding through to the medical, refrigerant and electronic ones, to name but a few.
However important these industries may be, they pale into insignificance with the tremendous speed and progress made in the area of fuel gases for the automotive industry. The earlier, 20th century, rush into the use of liquefied petroleum gas (LPG) for automotive applications, has been superseded by the rush in recent times into the exploitation of natural gas both compressed (CNG) and liquefied (LNG) and now even into hydrogen (H2).
Such is the drive for CNG and H2 that dedicated regulations and standards committees have been set up especially to meet this hunger, in order to accelerate the developmental phase for their auto applications. Here, Regulation 110 was brought in within Europe for CNG vehicles. At ISO, committee ISO TC197 was established for hydrogen, while Working Group 17 at ISO TC58/SC3 was devoted to on-board CNG cylinders.
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