The project introduced technical improvements to an acoustic solution based on noise shielding systems, with the goal of reducing noise propagation toward the residential receivers located near the plant area.

Acoustic mitigation intervention for a railway maintenance facility

Stopson Italiana managed the supply of a noise barrier for the maintenance facility of Trenord S.r.l., a leading company in regional rail public transport.

The intervention was carried out at the Novate Milanese site and involved the acoustic protection of residential receivers located close to the pumping station and the fire-fighting water reserve.

Project objective

The aim of the project was the reduction of airborne noise propagation generated by a metal structure housing two electric circulation pumps, connected to several mechanical devices.

The solution was developed to improve acoustic comfort in the surrounding areas and ensure performance aligned with the targets required by the Customer.

Features of the Stopson Italiana noise barrier

The supply included the installation of sound-absorbing and sound-insulating aluminium panels,

with the following characteristics:

• barrier height: 4.5 m

• material: sound-absorbing and sound-insulating aluminium

• installation: fixed to the existing reinforced concrete foundation

This configuration was designed to ensure effective acoustic shielding in a sensitive infrastructure environment, where it was necessary to contain the noise generated by technological equipment.

Required acoustic performance and achieved results

One of the most relevant aspects of the project was the achievement of the required attenuation values near the receivers.

Required attenuation

• Receiver 1: 10 dB(A)

• Receiver 2: 4 dB(A)

Achieved attenuation

• Receiver 1: 10.6 dB(A)

• Receiver 2: 10.4 dB(A)

The achieved results confirm the effectiveness of the installed noise barrier, with values that met and exceeded the required performance, especially for the second receiver.

Stopson Italiana noise barriers: tailored solutions for infrastructure and industry

Stopson Italiana noise barriers are designed to meet high technical specifications and tailored application requirements. They stand out for design flexibility, build quality and the ability to adapt to different industrial and infrastructure contexts.

Available panel types

Stopson Italiana offers different panel solutions:

• in natural or painted aluminium, sound-absorbing and sound-insulating

• in painted steel, sound-absorbing and sound-insulating

• in corten steel, sound-absorbing and sound-insulating

• in wood, sound-absorbing and sound-insulating

• in glass/PMMA, sound-insulating

Application fields

Noise barriers are among the most effective solutions for reducing acoustic pollution generated by multiple sources, including:

• road and railway traffic

• construction sites

• industrial facilities

• cogeneration plants

• natural gas compression units

• pumps, fans, mills and presses

A project confirming the effectiveness of Stopson Italiana solutions

The intervention carried out at the Trenord maintenance facility in Novate Milanese confirms Stopson Italiana’s ability to develop effective and customized acoustic solutions, capable of accurately meeting customer requirements and site-specific conditions.

Thanks to a performance-oriented design approach, the installed barrier improved noise mitigation toward sensitive receivers, contributing to the acoustic quality of the area and the overall functionality of the facility.

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A strategic project for the U.S. market

A leading customer in the rotating machinery industry

The project involved the supply of in-line silencers for two-stage compressors for a well-known U.S. rotating machinery manufacturer, a major player in the global industrial scene.

Custom design to customer specifications

Each silencer is designed to meet precise acoustic, fluid dynamic, and mechanical requirements tailored to the operating characteristics of the compressors. The design has been optimized to ensure high performance in terms of noise abatement and structural reliability.

Performance and safety, a comprehensive engineering approach

Noise control under all operating conditions

The silencers were engineered with adequate safety margins to ensure effective noise attenuation, even under the most demanding operating conditions. Acoustic analyses played a key role in validating the expected performance.

Prevention of acoustic and mechanical resonances

Frequency analyses were conducted to avoid the occurrence of resonance phenomena, considering the rotational speeds of the compressors and the natural frequencies of the proposed assemblies. Optimization of geometry, stiffness, and mass distribution allowed the elimination of vibrational issues along the entire operating range.

Certified indoor cleaning

As with all products connected directly to compressors, advanced manufacturing techniques were used to ensure theabsence of particles greater than 100 microns. Internal cleanliness was certified by flux tests performed during final testing.

U-Stamp certification, a guarantee of quality and global compliance

What is U-Stamp Certification

U-Stamp certification is an official recognition issued by theAmerican Society of Mechanical Engineers (ASME) for pressure equipment built according to Section VIII of the ASME Code. It is a mandatory requirement for marketing such equipment in the U.S. market.

Technical and operational advantages

Thanks to this certification, every stage of the production process, from design to manufacturing and testing, follows strict and traceable procedures. Material, welding and inspection choices are made according to the strictest international standards, minimizing the risk of failure or malfunction.

Tracking and registration with the National Board

One of the main advantages of U-Stamp certification is the ability to register products with the U.S. National Board, an essential step for the legal installation of pressurized equipment in the United States.

Conclusion

The success of this first U-Stamp certified project demonstrates U-Stamp’s ability to offer advanced acoustic solutions that are safe and comply with the most stringent international regulations. A significant achievement that opens up new opportunities in the global industrial noise reduction market.

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