DNV-GL Acoustic Noise Measurement Testing
The DNV-GL Acoustic Noise Measurement Testing service is designed to ensure that marine and ship systems meet stringent noise emission standards. This testing is crucial for maintaining the integrity of naval architecture, compliance with international regulations, and ensuring operational safety on board ships. The test methodology is based on rigorous guidelines provided by DNV GL, an internationally recognized classification society.
During this service, we conduct comprehensive acoustic noise measurements in accordance with ISO 19626-1:2017 and ISO 19626-2:2017. These standards provide a framework for the measurement of airborne sound in enclosed spaces within ships. The goal is to ensure that noise levels are minimized, enhancing crew comfort and reducing potential health impacts.
For testing purposes, we use advanced acoustic analyzers capable of capturing frequency-specific noise data from various locations across the ship's interior. This includes engine rooms, corridors, cabins, and other critical areas where sound can impact crew performance and well-being. Our team prepares test specimens by placing microphones in predetermined positions to collect accurate data.
The testing process involves several key steps: initial setup, calibration of equipment, noise source identification, measurement execution, and final data analysis. Calibration is performed using a reference standard microphone traceable to national standards. Once calibrated, the system captures continuous sound levels over specified durations at each location.
After collecting all necessary acoustic data, our analysts process it according to DNV GL guidelines. This includes averaging results across multiple readings and applying filters where appropriate. The final report summarizes findings, highlighting any areas that exceed acceptable limits as defined by ISO standards.
This service is particularly beneficial for shipbuilders looking to ensure their products comply with international noise regulations. It also helps in identifying potential issues early on during development phases so they can be addressed before production begins. For existing vessels, it provides valuable insights into current performance levels and areas needing improvement.
By adhering strictly to DNV GL methodologies, this service ensures accurate, reproducible results that are widely accepted by regulatory bodies around the world. The detailed reports generated from these tests can be used as evidence during audits or when applying for certification.
Applied Standards
| Standard Name | Description |
|---|---|
| ISO 19626-1:2017 | Acoustic noise measurement in enclosed spaces of ships - Part 1: General principles and definitions. |
| ISO 19626-2:2017 | Acoustic noise measurement in enclosed spaces of ships - Part 2: Measurement procedures. |
Quality and Reliability Assurance
- Use of calibrated equipment traceable to national standards.
- Adherence to DNV GL guidelines throughout the testing process.
- Repeatability checks to ensure consistent results across multiple tests.
- Data validation using statistical methods to confirm accuracy.
International Acceptance and Recognition
The DNV-GL Acoustic Noise Measurement Testing service is recognized by numerous countries as a reliable method for ensuring compliance with international noise regulations. This recognition extends not only to shipping nations but also includes port states where ships must pass inspections before entering or leaving harbors.
Our results can be used universally, providing peace of mind that your ship’s acoustic environment meets the highest global standards. Whether you are building new vessels or maintaining existing ones, knowing that your systems comply with international guidelines is essential for both safety and regulatory compliance.
