Case Studies

 
These case studies illustrate how Alcoa is acting upon its commitment to sustainable development throughout the world. We are pleased with this progress, but look forward to achieving even more.

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Soundproof booth at the casthouse
Soundproof booth at the casthouse
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Casthouse sealing booth
Casthouse sealing booth
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Sealing booth
Sealing booth
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New forklift
New forklift
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Silencer on the syphon cleaning system
Silencer on the syphon cleaning system
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NOISE:
Before = 111 dB
After = 85.6 dB
Reduction of 25.8 dB

Sawing station cabins 1
Sawing station cabins 1
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Sawing station cabins III
Sawing station cabins III
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2007 — Health and Safety

Reduced noise exposure at Deschambault

An aluminum smelter can be a noisy work environment and measures must be taken to protect employees from the negative effects of exposure to too many decibels.
 
At the Deschambault aluminum smelter, major projects were undertaken in two sectors to address this significant health and safety issue.  In the Anode Sealing sector, we built soundproof booths for our operators, hydraulic units were isolated and an anode stub straightener was installed.  Prior to the implementation of these measures, noise levels often exceeded Alcoa standards, which are between 82.6 dBA and 89.1 dBA.  There have been no exceedances recorded in this sector since the improvements.
 
At the casthouse, we installed a silencer on the syphon cleaning system and improved the soundproofing on the furnace workstation.  In addition, cabins were constructed at the sawing stations, enabling operators to gather computer data in a quieter environment, which fosters better concentration for this type of work.
 
In the same sector, improvements were also made at Shipping.  We replaced old forklifts with new, quieter ones, reducing noise levels for both operators and other workers.  Although there is still some work to be done to meet Alcoa’s noise level standards in this sector, these actions are a big step in the right direction.
 
These types of projects are broad in scope and often take several years to complete.  That said, the immediate benefits for employees make them a success from day one.