ANNEX

Appendix HDatabase 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-1Coefficients 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