New construction, extension and retrofitting of gas networks frequently pose multiple challenges linked to choosing the locations for pressure reducing and metering stations. The challenges can include the need to acquire land viable for a pressure reducing and metering station. Sometimes there is no suitable location for the station in areas of intensive settlement.
Other challenges in the construction of traditional pressure reducing and metering stations include the station’s enclosure and perimeter fencing, which can reduce the aesthetic value of the local landscape. This disqualifies building pressure reducing and metering stations near heritage features or in parks, unless local authorities approve the project.
Noise, an unavoidable nuisance generated by the operation of every pressure reducing and metering station, is also a problem. It may negatively affect the neighbourhood and spark protests of the local community before the project is built.
Those challenges can be solved by installing new pressure reducing and metering stations – and moving the existing ones – underground. It can be done with underground pressure reducing modules for NG networks. The underground modules require much less land than a conventional pressure reducing and metering station.
The operating noise emission levels are low (less than 40 dB). A great benefit for pressure reducing and metering stations installed in urban areas is that underground NG pressure reducing modules can be installed within a pre-existing dense settlement and without disturbing the landscape. An underground installation also helps reduce the project costs, especially in large cities where land is very expensive.