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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2010 — Environment

Impressive reduction in water consumption at Baie-Comeau

The raw water that enters the plant is used either in the process, mainly in the Casthouse, or treated to be used as potable water for the various departments and for drinking. Raw water consumption in 2009 was 57% lower than in 2005, that is nearly one million cubic meters less – a major reduction to say the least!
To achieve this impressive result, several projects were carried out the last few months by the Maintenance team’s Production Services department:
  • Reconditioning of the cooler exchangers on the two compressors;
  • Repair of several permanent leaks, defective valves and breaches within the network;
  • Installation of a closed-loop system for the water used by the friction welder at the stud mill;
  • Improved tracking for the back-up cooler for the North compressors cooling system.
A work team has been created to pursue these improvement initiatives. Their focus is on calculating and assessing the amount of water consumed by various pieces of equipment and sectors within the plant. The goal: identifying new opportunities to reduce.
By applying cutting-edge solutions, we are able to adequately comply with new water management regulations as well as Alcoa’s water consumption strategy. But, best of all, our efforts have meant that several millions of litres of water will remain in local lakes and rivers.

From left to right, from the Maintenance team’s Production Services department: Marcel Bouffard, Michel Gough, Nicolas Minville, Nathalie Bellerive (Environment Sector), Guy Létourneau and Luc Bélanger