Which paths can transmit sound?
The acoustic specialist considers panels, doors, seams, ventilation openings and exhaust paths. The drafter must show how each approved treatment is built and connected.
| Path | Drawing input | Review question |
|---|---|---|
| Panel | Approved buildup | Is continuity shown? |
| Door | Seal and latch detail | Does access preserve treatment? |
| Air inlet | Silencer and free area | Does cooling still work? |
| Exhaust | Silencer and route | Is the interface coordinated? |
How should performance be tested?
ISO 8528-10:2022 provides generator set noise measurement methods, while ISO 3744:2025 covers sound power determination for suitable sources and environments. The project needs a selected criterion and specialist-approved test plan.
Sources: International Organization for Standardization: ISO 8528-10:2022, Measurement of airborne noise, International Organization for Standardization: ISO 3744:2025, Determination of sound power levels
Common questions
What else should the bid team know?
Is one dB value enough to compare offers?
No. Compare operating condition, metric, distance or location and measurement method.
Can larger louvers improve cooling without effect on noise?
Changing an air opening can affect both systems. The mechanical and acoustic specialists should review it together.
Does this page certify any enclosure?
No. It is a coordination guide, not a performance certificate.
Primary sources
- Application Manual: Liquid Cooled Generator Sets, ventilation chapterCummins
- Ambient Capability of Enclosed Generator SetsCaterpillar
- ISO 8528-10:2022, Measurement of airborne noiseInternational Organization for Standardization
- ISO 3744:2025, Determination of sound power levelsInternational Organization for Standardization