National Pollutant Release Inventory (NPRI) Emission Estimate Guide for Primary Aluminum Producers
- 1. Description of the Industry
- 2. Are you required to report to the NPRI?
- 3. Overview of this Guide
- 4. Description of Operations (Raw Materials, Products, Releases vs. Reporting Criteria)
- 5. Identification of sources of releases and off-site transfers
- 6. Estimating Air Emissions: Part 1
- 7. Estimating Air Emissions: Part 2
- 8. Estimating Releases to Water Bodies
- 9. Estimating Releases to Land
- 10. Estimating Off-site Transfers (Disposal and Recycling)
- 11. Glossary
- 12. References
2. Description of the industry
This section provides a description of the primary aluminium industry in Canada. Firstly, to avoid ambiguity when reading this guide, here is a brief definition of the terms used, as proposed by the NPRI.
Primary aluminium production: Aluminium produced directly from the electrolysis of alumina.
Primary aluminium processing: Refining aluminium by any process; rolling, drawing, casting, extruding and alloying of aluminium to produce basic shapes.
Note: These definitions may be modified over the years. Readers should therefore check the NPRI for the most recent definitions.
Primary aluminium production and processing industries that comply with the above definitions are listed under the following North American Industry Classification System (NAICS)* codes:
- 3313 - Alumina and Aluminum Production Processing
- 33131 - Alumina and Aluminum Production Processing
- 331313 - Primary Alumina and Aluminum Production
- 331317 - Aluminum Rolling, Drawing, Extruding and Alloying
Note: Other NAICS codes (2007) may also apply to this sector.
* Source: Statistics Canada, North American Industry Classification System (NAICS) 2007.
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