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Voltas Limited AC-Plant – Rudrapur

Case Study: Voltas Limited AC-Plant – Rudrapur

Acoustic Solutions for Manufacturing Environments by MMTPL

Project Overview

Client

Voltas Limited (Tata Enterprise)

Location

Rudrapur, India

Scope

Noise reduction in manufacturing plant

Total Area Covered

600 m²

Objective

Minimize industrial machinery noise in the AC manufacturing facility and enhance the acoustic environment for operational efficiency and worker comfort.

Acoustic Challenges

1

High-Noise Machinery: HVAC and compressor equipment producing continuous airborne noise impacting plant operations.

2

Echo & Reverberation: Hard reflective surfaces within the plant amplified noise levels.

3

Compliance Requirement: Reduce noise exposure to meet industrial health and safety standards (< 85 dB).

Solutions Implemented by MMTPL

Pyramid Acoustic Foam Panels

Specification: NRC 0.90

Design: 2" Pyramid profile for effective mid-high frequency absorption.

Application: Wall and ceiling treatment across noisy production areas.

Function: Reduced internal echo and reverberation, improving sound clarity and lowering overall noise levels.

SoundBlanket® MLV (6 mm)

Performance: STC 34 – Effective airborne noise blocking barrier.

Application: Installed on partition walls adjacent to offices and quieter plant zones.

Function: Created a dense acoustic barrier to isolate noisy zones within the plant.

Execution Scale

Total Area Treated

600 m², combining absorption (pyramid foam) and isolation (MLV 6 mm).

Zones Covered

Production floor walls
Adjacent partitions near administrative spaces.

Results

Noise Reduction

Significant drop in internal reverberation time (RT60).

Airborne noise blocked between plant floor and adjoining workspaces.

Acoustic Performance

Composite performance achieved STC 50+ walls and NRC-controlled interior acoustics.

Worker Comfort

Improved speech clarity, reduced noise fatigue, and compliance with OSHA industrial standards.

Materials Summary

Pyramid Acoustic Foams

NRC 0.90, 2" thickness, for high-efficiency sound absorption.

SoundBlanket® MLV (6 mm)

STC 34, for airborne noise control.

Coverage Area

600 m²

Significance of the Project

This project for Voltas Limited showcases MMTPL’s expertise in blending sound absorption and sound isolation techniques for industrial spaces, delivering health-compliant, efficient acoustic environments in manufacturing plants

Voltas Limited AC-Plant – Rudrapur: Project at a Glance
ClientVoltas Limited (Tata Enterprise)
LocationRudrapur, India
ScopeNoise reduction in manufacturing plant
Total Area Covered600 m²
ObjectiveMinimize industrial machinery noise in the AC manufacturing facility and enhance the acoustic environment for operational efficiency and worker comfort.
ApplicationWall and ceiling treatment across noisy production areas.
Coverage Area600 m² Significance of the Project This project for Voltas Limited showcases MMTPL’s expertise in blending sound absorption and sound isolation techniques for industrial spaces, delivering health-compliant, efficient acoustic environments in manufacturing plants

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Frequently Asked Questions

What was the scope at the Voltas AC plant in Rudrapur?

600 m2 of noise reduction across an air conditioner manufacturing facility, addressing continuous airborne noise from HVAC and compressor equipment, reverberation from hard reflective surfaces, and a compliance requirement to keep exposure below 85 dB.

What was installed?

Pyramid acoustic foam panels at NRC 0.90, in a 2 inch pyramid profile for mid and high frequency absorption, applied to wall and ceiling surfaces across the noisy production zones.

Why does absorption help on a plant floor if it does not block noise?

Because much of the level on a plant floor is reverberant rather than direct. Sound reflects repeatedly off hard surfaces and accumulates. Adding absorption removes that build-up, which lowers the measured level away from the machines even though the machines themselves are unchanged.

What are the limits of absorption in an industrial space?

It reduces the reverberant field, not the direct sound close to a machine. An operator standing at a compressor is dominated by direct noise, so exposure there is addressed with enclosures, barriers or distance. Absorption is what protects the rest of the floor.

How is compliance below 85 dB verified?

By measurement before and after, at the positions the assessment covers. Industrial acoustic work is specified against a measured target, which is why the source level and the required reduction are established first. Send the drawings, the room volumes and the target NRC or STC, and the system is specified against those figures with test reports issued alongside the supply.

Who manufactures industrial acoustic foam in India?

MMTPL (Mahabir Multi Tech Private Limited) manufactures the full range at its Palwal plant in Haryana, India, and supplies architects, consultants and turnkey contractors in India and 25+ export markets.