Project Overview
This 92,000 sq ft colocation data center in Northern Virginia operates high-density server racks and multiple CRAH cooling units. As rack density increased, continuous broadband noise from server fans and cooling systems pushed workstation noise levels above OSHA permissible exposure limits. The operator needed a non-disruptive acoustic upgrade to protect on-site technicians and meet occupational health audit requirements, with zero impact on cooling airflow and equipment uptime.
Key Acoustic Challenges
- Low-mid frequency noise from cooling systems propagates across open equipment halls, reducing on-site communication clarity
- Acoustic materials must be non-shedding, dust-resistant and compatible with strict data center cleanliness protocols
- All installation work must be completed during rolling maintenance windows with no interruption to live server operations
Solution Delivered
Modular MLV damping sound barriers were installed along high-noise cooling unit perimeters and main equipment aisles. Each barrier delivers up to 27dB STC per layer, blocking direct noise radiation to technician workstations while maintaining unobstructed airflow. The main equipment hall ceiling was fitted with high-density fiberglass acoustic panels with hardened sealed surfaces to reduce overall hall reverberation without releasing fibers or particulates. All panels were pre-cut to exact dimensions off-site, and installed overnight in phased shifts to avoid operational disruption.
Measurable Outcomes
- Technician workstation noise levels reduced by 41%, falling fully within OSHA 8-hour TWA exposure limits
- On-site verbal communication clarity improved by 43%, reducing operational error risks
- Zero downtime recorded during the entire acoustic retrofit project
- All materials meet ASTM E84 Class A fire rating and data center cleanliness specifications
Industry Impact
This project demonstrates that targeted modular acoustics can deliver OSHA compliance for high-density data centers without sacrificing cooling performance or uptime — a key benchmark for colocation operators scaling rack density across North America.
