(BAT) Reference Document for the Production of Chlor-alkali ...

Chapter 3
Table 3.21: Emissions of noise from chlor-alkali plants in EU-27 and EFTA countries in
2008/2009
Origin of noise emission Measurement point Noise level in dB
Entire plant Outside the site boundaries
32 – 35 ( 1 )
41 – 48 ( 2 )
Rectifier and transformer NI 78.2
Salt storage Conveyor 85.1 – 95.7
Brine filtration NI 76.1
Brine pump NI 76.7 – 89.6
Brine agitator NI 83.4 – 83.9
Between electrolysers inside building 80.5
Cell room
Roof 64.0
Ground floor, outside building 77.5
Window 71.5
Chlorine compression
Inside closed building
Q 85
92.1
93
Hydrogen compression Inside building
88
90
Air compression Inside closed building 70.4
Sodium hydroxide concentration pumps NI 88
Centrifuge in caustic evaporation unit Inside closed building 86.0
Sulphate drying Inside closed building 74.6
Mercury distillation Window 74.4 – 86.7
Pump station cooling towers Inside closed building 92.4
( 1 ) Emission limit value during the night 40 dB(A).
( 2 ) Day and night measurements during 30 minutes.
NB: NI = No information provided.
Source: [ 57, EIPPCB 2011 ]
Directive 2002/49/EC relates to the assessment and management of environmental noise [ 148,
Directive 2002/49/EC 2002 ] while Directive 2003/10/EC sets exposure limit and exposure
action values for workers protection against noise [ 149, Directive 2003/10/EC 2003 ].
WORKING DRAFT IN PROGRESS
TB/EIPPCB/CAK_Draft_1 December 2011 103