Serving Industries Across India
Noise & Vibration Control: Vibration Isolation Solutions in India
Vibration Isolation, Anti-Vibration Mounts & Industrial Noise Control for Machinery, HVAC Plant & Buildings
Summary: Noise and vibration control treats both airborne noise, the sound that travels through air, and structure-borne vibration, which travels through floors, walls and pipework and re-radiates as noise elsewhere. This page is written for plant engineers, MEP consultants and facility managers who need vibration isolation and noise control engineered together, so a problem is solved at its source.
SomNandi surveys the site, identifies whether the problem is airborne, structure-borne or both, and designs, supplies and installs the right combination of isolators, enclosures, barriers and silencers.
- Airborne noise and structure-borne vibration treated together
- Anti-vibration mounts and isolation pads selected to load and speed
- ISO certified manufacturer · 150+ projects delivered
SomNandi Industries provides noise and vibration control in India for factories, power plants, commercial buildings, hospitals and data centres. We combine vibration isolation, using anti-vibration mounts, isolation pads and vibration isolators selected for each machine, with airborne noise control such as acoustic enclosures, noise barriers and industrial silencers. Treating both paths together is what stops a noise problem from reappearing somewhere else in the building.
Why Machine Vibration Turns Into a Noise Problem
Pumps, compressors, chillers, DG sets, cooling tower fans and rooftop AHUs all vibrate as they run. When they are bolted directly to a floor slab or roof, that vibration travels through the structure and re-radiates as low-frequency noise in rooms far from the machine: a hum in an office below a plant room, a rumble in a hospital ward, or a boundary noise complaint that an enclosure alone cannot fix.
Vibration also loosens fixings, cracks pipework and shortens bearing life, so well-selected vibration isolators protect the equipment as well as the people around it.
What Is Vibration Isolation?
Vibration isolation places a resilient element between a machine and the structure it sits on, so the machine’s vibration is not passed into the building. The isolator, whether a rubber or neoprene pad, an anti-vibration mount or a spring isolator, is chosen so its natural frequency is well below the machine’s operating frequency. Isolation then works across the running speed range.
Isolation is paired with flexible connections on pipes and ducts. A perfectly isolated pump still transmits vibration if its pipework is rigidly connected to the wall.
Airborne Noise vs Structure-Borne Vibration: What Actually Changes?
Short answer: Airborne noise is stopped with mass, absorption and sealing: enclosures, barriers, silencers and louvers. Structure-borne vibration is stopped by breaking the mechanical path with isolators and flexible connectors. Solving one does not solve the other.
This is why a noise survey comes first. If the complaint is a low hum that persists after an acoustic enclosure is fitted, the path is usually through the structure, and isolation is the fix.
How Are Anti-Vibration Mounts Selected?
Short answer: By the machine’s weight and load distribution, its operating speed, the floor or roof it sits on, and how sensitive the space below is.
Rubber and neoprene vibration isolation pads suit lighter, higher-speed equipment and less sensitive locations. Spring isolators give the deflection needed for slower, heavier machines and for rooftop plant above occupied rooms. Getting the deflection right is what decides whether the isolation actually works.
Engineering Design and Construction Approach
SomNandi’s noise and vibration projects run through six stages: a site noise and vibration survey at the source, the structure and the boundary; diagnosis of the transmission paths; target setting against CPCB and occupancy limits; design of the isolation and airborne treatment package; supply and installation by our own team; and verification against the agreed target.
Field Notes: Where Noise and Vibration Projects Go Wrong
Two mistakes come up repeatedly. First, airborne treatment is installed for what is really a structure-borne problem, so an expensive enclosure goes in and the low-frequency hum remains. Second, isolators are fitted but bypassed: rigid pipe connections, conduit or a grouted base short-circuit the mounts, and the vibration carries on into the structure.
Technical Specifications Overview
| Technical Parameter | Standard Solution | Performance Advantage |
|---|---|---|
| Vibration Isolation | Rubber / neoprene pads, anti-vibration mounts, spring isolators | Stops structure-borne noise at the source |
| Isolator Selection | Matched to machine weight, speed and supporting structure | Isolation that works across the running range |
| Connections | Flexible pipe and duct connectors | Prevents isolators being bypassed |
| Airborne Noise | Acoustic enclosures, barriers, silencers, louvers | Treats noise travelling through air |
| Assessment | Site noise and vibration survey | Right fix for the right path |
| Compliance Target | CPCB zone limits and workplace benchmarks | Boundary and occupant compliance |
| Scope | Design, supply and installation | Single point of responsibility |
Technical Data Sheet
| Parameter | Specification |
|---|---|
| Service | Noise & Vibration Control |
| Isolation Products | Isolation pads, anti-vibration mounts, spring isolators |
| Airborne Treatment | Enclosures, barriers, silencers, louvers |
| Typical Equipment | Pumps, compressors, chillers, DG sets, cooling tower fans, AHUs |
| Sectors | Industrial, commercial, healthcare, data centres |
| Survey | Noise and vibration measurement at source, structure and boundary |
| Scope | Design, supply and installation |
Specifications, Benefits, Applications and Installation Process for Noise & Vibration Control
Compliance With CPCB Noise Standards
Under the Noise Pollution (Regulation and Control) Rules, 2000, CPCB ambient noise limits are 75 dB(A) by day and 70 dB(A) by night in industrial areas, 65 and 55 dB(A) in commercial areas, 55 and 45 dB(A) in residential areas, and 50 and 40 dB(A) in silence zones around hospitals, schools and courts. Day time is 6 a.m. to 10 p.m. Inside the workplace, noise programmes are usually built around the widely used 90 dB(A) 8-hour exposure benchmark. SomNandi designs noise and vibration control to the limit that applies to your site.
Related Guides and Case Studies
Frequently Asked Questions
It is the treatment of both airborne noise and structure-borne vibration from machines, using isolators, enclosures, barriers and silencers together.
Placing a resilient element, such as a pad, mount or spring isolator, between a machine and the structure, so vibration is not passed into the building.
When the problem travels through the structure, usually a low hum in nearby rooms. Enclosures treat airborne noise; mounts treat structure-borne vibration. Many sites need both.
Rubber and neoprene pads suit lighter, faster machines; spring isolators suit heavier, slower equipment and rooftop plant over occupied space. Selection depends on weight, speed and structure.
Usually the isolation is bypassed by rigid pipes, conduit or a grouted base. Flexible connections are needed on every service.
Yes. Every project starts with a noise and vibration survey so the right path is treated.
Pumps, compressors, chillers, DG sets, cooling tower fans, AHUs, blowers and most rotating machinery.
Get a Noise and Vibration Survey from SomNandi Industries
Tell us which machines are causing the problem, where the noise or vibration is felt and your site's CPCB zone, and SomNandi's engineers will diagnose the transmission path and propose the right isolation and noise control package.