Appendix H Database for industrial source
This appendix presents a few examples for input values for some industrial noise sources that may be used to calculate industrial noise following the method described in 2.4 Industrial noise. As industrial noise sources are extremely specific for each industrial site, appropriate values are obtained from local, national or international databases or measurements as appropriate.
Table H-1
Coefficients LW, LW' and ΔLW,dir,xyz (x, y, z) for sound power
| ΔLW,dir,xyz (x, y, z)=0 LW' is expressed as sound power per metre for line source, or per squared metre for area source. | ||||||||||
| Description | Type of source | Source directivity | 63 | 125 | 250 | 500 | 1 000 | 2 000 | 4 000 | 8 000 |
|---|---|---|---|---|---|---|---|---|---|---|
| Grit blasting — outside — with nozzle | PointSource | FreeField | 108,77 | 110,37 | 112,77 | 107,77 | 104,37 | 98,07 | 97,07 | 86,97 |
| Rotary kiln | LineSource | FreeField | 79,27 | 84,17 | 86,67 | 89,27 | 93,07 | 93,47 | 92,07 | 87,77 |
| Ship yard | AreaSource | HemiSpherical | 67,17 | 69,07 | 74,57 | 62,17 | 63,97 | 66,77 | 70,97 | 68,07 |
| Gas terminal | AreaSource | HemiSpherical | 74,17 | 70,07 | 65,57 | 64,17 | 59,97 | 57,77 | 51,97 | 56,07 |