Potential Solutions for Sound Attenuation in Gas Pipeline Transmission and Compression Stations
Gas pipelines and pipeline transmission have been consolidated throughout the last decades as the most conventional modality to transfer large quantities of natural gas over long distances. Still, as well as acquiring more centrality in geostrategic terms, pipeline networks have become even more complicated in technical ones, so needing the inclusion of additional distribution hubs and compression stations. Compressor stations constitute indeed a key component with a view to concentrate and move pressurized gas along the pipelines.
Moreover, gas compressor stations and pipeline networks occupy a vast area in national territories due to their supplying role. This combination of territorial presence and technical sophistication has led this infrastructure to prevail as one of the most harmful creators of chronic noise pollution.
Sources of noise and noise levels
Technically speaking, the longer the pipeline is, the bigger is the necessity of to increase the pressure used and to encompass additional compression stations. Due to such a variety of equipment placed on this infrastructure, gas pipeline complexes can easily become catalysts of excessive noise generation.
According to several international regulations, as we face a noise level between 79dB(A) and 85dB(A), the source is already violating health and safety standards. Exceeding such standard values, as compressor stations usually do with a noise level up to 100 dB(A), means making a pretty large number of people the subject of noise exposure. As a matter of fact, not only does this put at risk the safety of nearby neighbors – as well as the environment – but also the adjacent infrastructure hosting workers and specialized personnel.
Available solutions and methods of attenuation
The most fruitful strategy when it comes to gas transmission infrastructure is to address noise generation directly at its source. There are several solutions that can be employed to achieve attenuation and stay within safe noise parameters. Among them, multistage control valves can be applied to reduce trim discharge velocity and, consequently, reduce the scale of the noise generated.
However, In-Line Silencers represent the best solution proposed by Stopson Italiana to tackle the issue, which has already been chosen for the installation within the Trans-Adriatic Pipeline (TAP). These peculiar pieces are designed specifically to reduce the noise generated by valves and compressors in piping systems. This typology of Silencers allows to achieve noise attenuation only through reactive components, while do not include any section that would produce an absorbing action. Each Silencer provides an acoustic guarantee approximately equal to 30 dB(A).
The noise level from gas pipelines can be brought back to the increasingly stringent standards also by combining different soundproofing techniques, such as acoustic screens and acoustic insulation components.
Any company or institution in charge of manufacturing a gas pipeline complex can rely on Stopson Italiana to provide the system with an efficient soundproofing solution, so avoiding detrimental consequences for surrounding individuals and adjacent infrastructure.
Through our customer management, we can assure a screening consultation to evaluate the scope of your project: how many Silencers your complex needs and at which specific points along the pipeline should be installed to achieve the objectives set previously.