Acoustic Treament of a Hydroelectric Facility :
The Alum Works Alcan (Chute-des-Passes, 1999)
- Evaluation of noise levels
- Identification and characterization of noise sources
- Realization of projected models
- Evaluation of different potential acoustic treaments
- Preliminary evaluation of the treatment cost and identification of the optimal solution
- Set-up of the selected treaments
Cost : CAN$ 1.1 million
Results :
Before : 102-92 dB(A)
After : 87-84 dB(A)
Reduction : 15 dB
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Acoustic Treament of a Hydroelectric Facility :
The Alum Works Alcan (Chutes-Savane, 2002)
- Evaluation of noise levels
- Identification and characterization of noise sources
- Realization of projected models
- Evaluation of different potential acoustic treaments
- Preliminary evaluation of the treatment cost and identification of the optimal solution
- Set-up of the selected treaments
Cost : CAN$ 300,000
Results :
Before : 96-94 dB(A)
After : 79 dB(A)
Reduction : 15 dB
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Acoustic Treament of an Electric Rectifier Room :
Alum Works Alcan (Jonquière, 1998-1999)
- Determination of sound power levels of noise sources
- Elaboration of a projected acoustical model
- Determination of an optimal solution
Cost : CAN$ 30,000
Résultats
:
Before : 92 dB(A)
After : 84 dB(A)
Reduction : 8 dB
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Acoustic Treament of a Dust Collector :
Alcan Plant (Grande-Baie, 2001)
- Identification of the radiant area by sound intensity
- Conception of an enclosure
- Installation of the enclosure
Cost : CAN$ 12,000
Results :
Before : 85 dB(A)
After : 67 dB(A)
Reduction : 18 dB
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