The draft amendments to the Gas Cylinders Rules, 2016 were published on August 4, 2025 via notification G.S.R. 527(E), inviting objections/suggestions within 30 days. The government considered them and has now issued the final Fourth Amendment Rules, 2025.

In Rule 2, clause (xxviii) is substituted to redefine “gas cylinder” or “cylinder” as:

“any closed metal container having a volume exceeding five hundred mililitre but not exceeding one thousand liters intended for the storage and transport of compressed gas, including any liquefied petroleum gas container or liquefied natural gas container or compressed natural gas cylinder or compressed hydrogen gas cylinder fitted to a motor vehicle as its fuel tank but not including any other such container fitted to a special transport or undercarriage and includes a composite cylinder and cryogenic container; however, the water capacity of cylinder used for filling and storage of Compressed hydrogen gas, Compressed natural gas, nitrogen, compressed air may exceed one thousand liters up to three thousand liters provided the diameter of the nitrogen, compressed air cylinder does not exceed sixty centimeters and the diameter of Compressed hydrogen gas, Compressed natural gas cylinder does not exceed eighty centimeters.”