Do CNG refueling station compressors generally require a backup unit?

In situations where continuous operation is required with no downtime for maintenance, the equipment should have a backup unit.

Are sub-stations, standard stations, and master stations all the same?

When setting up backup equipment, the key factors to consider are the application scenario, its importance, and the maintenance schedule. If a device is damaged or under maintenance, affecting its use or posing safety risks, there must be a backup device. As for whether backup compressors are installed in the sub-stations, standard stations, and main stations of CNG filling stations, the relevant standards for CNG filling stations should be referred to.

There are relevant guidelines for the selection principles of backup machines; you can refer to them

It depends on the situation, as well as on the context in which the application is used. If it’s required that there be no interruptions, and if the equipment tends to fail frequently, it’s advisable to have a backup unit. If the unit has few malfunctions and the application requirements are not high, it may be possible to refrain from installing one considering costs; however, professional personnel should be hired to manage the compressor

Assuming that no backup unit is installed, there is no safety risk for CNG stations; therefore, there is no requirement for operators to consider installing a backup unit in order to ensure long-term stable operation. Personal opinion: For satellite stations, this consideration may not be necessary, as the shutdown of individual satellite stations will not affect the entire system (unless the gas supply pressure is very high, in which case it’s a different matter). For example, in certain areas and at certain times, mandates were issued requiring guaranteed supply, which in turn forced enterprises to ensure the operation of their sub-stations); moreover, due to space constraints, it is difficult to have backup units for sub-stations. As for main stations, operators usually consider having backup units, as a shutdown of a main station would cause significant losses, whether from the perspective of the gas supply source or the market. :Q

There is usually a backup unit, one in use and one as backup