DASM Institute – The Leading Unit in Noise Measurement and Acceptance of Noise Reduction Solutions for Industrial Factories

DASM Institute for Acoustic Materials Development and Application is proud to be a pioneer in the field of material testing and noise measurement, analysis, and acceptance of industrial noise reduction solutions. With a team of experienced engineers, modern equipment systems, and a scientific approach, DASM has been accompanying many large enterprises in controlling and optimizing the acoustic environment in factories.

Typical Project: Noise Measurement & Acceptance of Chiller Area Sound Barrier at Japanese Factory

Within the framework of continuous cooperation, DASM was invited by a leading Japanese manufacturing enterprise located in Thai Binh province to perform the acceptance of the sound barrier system – a noise reduction solution for the chiller area after successfully implementing the initial noise measurement and analysis phase.

Phase 1: Noise Measurement and Noise Analysis in the Chiller Area

In the initial phase, DASM measures the background noise level and generated levels at working positions adjacent to the chiller system, using equipment that meets international standards. The measured parameters are analyzed in detail, thereby providing enterprises with a scientific basis to develop appropriate noise treatment plans.

DASM Institute – Service for Measuring Sound Absorption Coefficient in Reverberation Rooms According to ISO 354 & ASTM C423 Standards

Adapter Noise Measurement According to ISO 3745-2012 Standard – Quality Inspection at DASM Institute

DASM – Providing Electronic Equipment Acoustic Testing Services – Laptop Keyboards According to International Standard ISO 7779

Phase 2: Acceptance of Noise Reduction Solutions – Industrial Sound Barriers

After the sound barrier system was installed, the enterprise continued to trust and invite DASM back to the site to perform acceptance testing and evaluate the noise reduction effectiveness. This is an important step to:

• Verify the actual noise treatment effectiveness compared to the design.
• Ensure a working environment that complies with standards.
• Establish acceptance dossiers for internal reporting and competent authorities.

Technical Standards Applied by DASM in Noise Measurement

DASM's noise measurement and evaluation process always closely follows national and international technical standards, ensuring legal compliance and high accuracy:

🔹 TCVN 3985:1999

National standard on allowable noise levels at the workplace.

This is an important standard in protecting workers' health, regulating the maximum allowable noise level exposed during working hours.

🔹 QCVN 26:2010/BTNMT

National technical regulation on environmental noise.

Applied in assessing the level of noise dispersion into the environment surrounding the factory.

🔹 TCVN 7878-1:2008 (ISO 1996-1:2003)

International standard on description, measurement, and assessment of environmental noise.

This is a set of standards providing detailed guidance on equipment, measurement conditions, and acoustic analysis methods.

Acceptance Process for Noise Reduction Solutions at DASM

DASM's acceptance process always ensures transparency, professionalism, and science:

1. Field survey after installing the noise reduction system
2. Re-measure noise levels at previously measured locations
3. Compare data before and after treatment
4. Evaluate noise reduction effectiveness
5. Draw up an acceptance minutes with signatures of relevant parties
6. Hand over complete technical reports for archiving and legal purposes

Why do enterprises continuously choose DASM's noise survey services?

Being invited to perform both phases – initial measurement, noise survey and evaluation and post-treatment acceptance, is clear evidence of trust in DASM's professional capacity, modern equipment, and reputation.

Reasons why enterprises trust DASM:

✅ Practical experience with many large industrial projects

✅ Team of engineers with deep expertise in acoustics

✅ Internationally standardized measuring equipment (IEC, ISO)

✅ Clear, easy-to-understand reports usable for regulatory authorities

✅ Fast feedback, dedicated technical support

Turnkey Noise Measurement and Evaluation Service at DASM

DASM provides comprehensive services, from measurement, analysis to consulting and acceptance of industrial noise reduction solutions:

Main technical services:

• Measurement of factory, industrial park, and office noise
• Frequency spectrum analysis, identifying main noise sources
• Acceptance testing of materials, sound absorption systems, sound insulation
• Acoustic design consulting for construction works, engine rooms, barriers, sound insulation walls
• Compliance assessment with QCVN, TCVN, ISO standards

Customer objects:

• Manufacturing plants (textiles, mechanics, electronics...)
• Industrial zones, export processing zones
• Industrial construction investors
• MEP construction and installation units
• Environmental consulting companies

Industrial noise is not only a technical issue but also relates to health, legality, and corporate image. Therefore, choosing a professional unit like DASM to perform noise measurement – survey and acceptance is a necessary step in the journey of building a modern, sustainable, and safe factory.

DASM Institute is committed to providing accurate – prompt – standard-compliant technical services, accompanying enterprises in effective noise control, meeting the strict requirements of the market and laws.