Legal analysis: When the total weight of liquefied petroleum gas cylinders stored in restaurants exceeds 111kg (equivalent to two 51kg or seven 15kg cylinders), a special gas cylinder room should be set up. When the total weight of stored bottles is less than 421kg, the gas cylinder room can be set in a single-story special room adjacent to gas-using buildings (except residential buildings, important public buildings and high-rise civil buildings and podium buildings), and the special room shall comply with the provisions of Code for Design of LPG Supply Engineering (GB51142). When the total weight of stored bottles is more than 421kg, or if the bottles are forced to gasify, the gas cylinder room shall be set in an independent single-storey building with a distance of not less than 11m from other civil buildings. It is forbidden to have open flames and pile up inflammable and explosive articles in the room where gas cylinders are stored.

legal basis: article 38 of the law of the people's Republic of China on the prevention and control of air pollution, the people's government of a city may demarcate and publish a no-burn zone for highly polluting fuels, and gradually expand the scope of the no-burn zone for highly polluting fuels according to the requirements for improving the quality of the atmospheric environment. The catalogue of highly polluting fuels shall be determined by the competent department of ecological environment of the State Council. In the no-burn zone, it is forbidden to sell and burn highly polluting fuels; It is forbidden to build or expand facilities that burn highly polluting fuels. If they have been completed, they should switch to natural gas, shale gas, liquefied petroleum gas, electricity or other clean energy sources within the time limit stipulated by the city people's government.