Safety management of LNG point supply stations

Natural gas is an important resource in China's current industrial production and people's life. Its overall supply scale and application range have been continuously expanded, and it has become one of the essential resources in social development. Pipeline gas supply has gradually spread from large and medium cities to small cities. However, due to the large investment in natural gas pipelines and the long construction period, before the completion of the pipeline network, some small regional gas supply stations or point-to-point gas supply stations took the lead in occupying the market. Become the main mode of gas supply. The safety management of a gas company directly determines the safety and reliability of the supply station in its supply chain.
 
The storage of cryogenic liquefied natural gas has strict requirements on temperature, and the saturated vapor pressure is required to be close to the normal pressure of atmospheric temperature. Whether it is the storage and transportation of LNG storage tanks and the process of use, the critical point of its temperature must be ensured. At the same time, in the process of storage and transportation in the LNG supply station, it is necessary to ensure that the materials of the LNG tank equipment meet the low-temperature performance, to avoid occurrence in low-temperature environments, and the occurrence of brittle fracture shrinkage, otherwise it will cause the leakage of LNG. Bring certain risks to natural gas supply stations. The combustion range of LNG is 6% -13%, and the combustion speed of LNG is about 0.3m / s. If it is in a sealed environment, LNG and steam will explode due to combustion; but in an open environment, LNG will explode. And steam is less likely to explode. LNG vapors are flammable when exposed to open flames, and can easily spread to places with oxygen.
 
The natural gas point supply station has many characteristics such as simple process and low cost. Gas companies generally design the point supply station as an unattended station, and often in the operation management process, the safety management of the point supply station is particularly important. The risks of safety management are mainly reflected in the incomplete safety management rules and regulations, the standardization and standardization of the work of the supply station is not specific enough, the safety management responsibility system is not implemented, the relevant internal and external operator safety training is not in place, and the safety inspection and hidden danger handling is not timely There are many risks such as the scope of accident emergency treatment and emergency measures that are not effective in a timely manner.
 
The above is the safety analysis of natural gas point supply stations brought by LNG storage tank manufacturers.