Operating public gas valves without authorization. The gas pipeline is used as a load-bearing support or grounding lead. Installation and use of gas burning appliances that do not meet the requirements of gas source. Unauthorized installation, modification and removal of indoor gas facilities and gas metering devices. Use or store gas in places without safety conditions. Change the use of gas or switch to gas supply. If you are found, you will be warned. If you make such a mistake again next time, you may be punished according to the seriousness of the case. So you should obey the rules and don't go beyond them, or you will be punished by the rules.