Within mining, structural assets are not always included as part of formal criticality or risk assessment processes during design. Beyond typical structural asset inspection (usually every 4–5 years) these assets are often overlooked when it comes to ongoing formal inspection and maintenance programs for other critical assets in the plant. However, mining exposures can be highly corrosive for structures and there have been documented collapses where corrosion has played a causal role. The level of corrosion severity is a function of many interrelated factors, reactive cultures, climate, proximity to the coast, quality of process water, chemical characteristics of the ore body, design material, and coating selection, etc. This paper will present case study-based experience with different sites to allow discussion of the trends in structural corrosion risk and will recommend a structured pathway forward based on corrosion management best practices.

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Structural Asset Corrosion in Mining Exposures: Exploring Risk Trends and the Importance of Good Data

  • K. Sandhi,
  • N. Diaz,
  • M. Wei

摘要

Within mining, structural assets are not always included as part of formal criticality or risk assessment processes during design. Beyond typical structural asset inspection (usually every 4–5 years) these assets are often overlooked when it comes to ongoing formal inspection and maintenance programs for other critical assets in the plant. However, mining exposures can be highly corrosive for structures and there have been documented collapses where corrosion has played a causal role. The level of corrosion severity is a function of many interrelated factors, reactive cultures, climate, proximity to the coast, quality of process water, chemical characteristics of the ore body, design material, and coating selection, etc. This paper will present case study-based experience with different sites to allow discussion of the trends in structural corrosion risk and will recommend a structured pathway forward based on corrosion management best practices.