BS EN ISO 18086:2020 - Corrosion of Metals and Alloys: Determination of AC Corrosion and Protection Criteria

In the ever-evolving world of metallurgy and materials science, understanding the intricacies of corrosion is paramount. The BS EN ISO 18086:2020 standard is an essential resource for professionals dealing with the corrosion of metals and alloys, specifically focusing on the determination of AC (Alternating Current) corrosion and the criteria for protection.

Overview

Released on January 8, 2021, this comprehensive standard spans 48 pages and is a crucial document for engineers, researchers, and industry professionals who are involved in the protection of metallic structures from the detrimental effects of AC corrosion. The standard is identified by the ISBN 978 0 539 06890 0 and is recognized as a key reference in the field of corrosion science.

Understanding AC Corrosion

AC corrosion is a phenomenon that occurs when alternating current flows through a metallic structure, leading to accelerated degradation. This type of corrosion is particularly relevant in environments where metallic structures are in proximity to AC power lines or electrified railways. The BS EN ISO 18086:2020 standard provides a detailed methodology for assessing the risk of AC corrosion and offers guidelines for implementing effective protection strategies.

Key Features of the Standard

• Comprehensive Guidelines: The standard offers a thorough examination of the factors contributing to AC corrosion, including environmental conditions, material properties, and electrical parameters.
• Protection Criteria: It outlines specific criteria for the protection of metallic structures, ensuring their longevity and structural integrity.
• Practical Applications: The document includes practical examples and case studies that illustrate the application of the standard in real-world scenarios.
• International Recognition: As a part of the ISO (International Organization for Standardization) family, this standard is recognized globally, making it a valuable asset for international projects and collaborations.

Who Should Use This Standard?

The BS EN ISO 18086:2020 standard is indispensable for a wide range of professionals, including:

• Corrosion Engineers: Professionals tasked with designing and implementing corrosion protection systems will find this standard invaluable for ensuring compliance with international best practices.
• Materials Scientists: Researchers studying the effects of AC on different alloys can leverage the insights provided in this document to advance their work.
• Infrastructure Managers: Those responsible for the maintenance and safety of infrastructure such as pipelines, bridges, and railways will benefit from the protection criteria outlined in the standard.

Benefits of Implementing the Standard

Adopting the BS EN ISO 18086:2020 standard offers numerous benefits, including:

• Enhanced Safety: By adhering to the protection criteria, organizations can significantly reduce the risk of structural failures due to AC corrosion.
• Cost Savings: Preventing corrosion-related damage can lead to substantial savings in maintenance and repair costs over the lifespan of a structure.
• Regulatory Compliance: Many industries require compliance with international standards, and using this document ensures adherence to such regulations.
• Improved Performance: Structures protected against AC corrosion are likely to perform better and have a longer service life.

Conclusion

The BS EN ISO 18086:2020 standard is a vital tool for anyone involved in the field of corrosion protection. Its detailed guidelines and protection criteria provide a robust framework for understanding and mitigating the effects of AC corrosion on metals and alloys. By implementing the practices outlined in this standard, professionals can ensure the durability and safety of metallic structures, ultimately leading to more reliable and cost-effective infrastructure.

For those seeking to deepen their knowledge and expertise in corrosion science, this standard is an indispensable resource that offers both theoretical insights and practical applications. Embrace the guidance of BS EN ISO 18086:2020 and safeguard your projects against the challenges of AC corrosion.

BS EN ISO 18086:2020

This standard BS EN ISO 18086:2020 Corrosion of metals and alloys. Determination of AC corrosion. Protection criteria is classified in these ICS categories:

• 77.060 Corrosion of metals

This document specifies protection criteria for determining the AC corrosion risk of cathodically protected pipelines.

It is applicable to buried cathodically protected pipelines that are influenced by AC traction systems and/or AC power lines.

In the presence of AC interference, the protection criteria given in ISO 15589‑1 are not sufficient to demonstrate that the steel is being protected against corrosion.

This document provides limits, measurement procedures, mitigation measures, and information to deal with long-term AC interference for AC voltages at frequencies between 16,7 Hz and 60 Hz and the evaluation of AC corrosion likelihood.

This document deals with the possibility of AC corrosion of metallic pipelines due to AC interferences caused by conductive, inductive or capacitive coupling with AC power systems and the maximum tolerable limits of these interference effects. It takes into account the fact that this is a long-term effect, which occurs during normal operating conditions of the AC power system.

This document does not cover the safety issues associated with AC voltages on pipelines. These are covered in national standards and regulations (see, e.g., EN 50443).