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  • BSI
    BS EN ISO 18086:2020 Corrosion of metals and alloys. Determination of AC corrosion. Protection criteria
    Edition: 2021
    $473.45
    / user per year

Description of BS EN ISO 18086:2020 2021

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).



Standard NumberBS EN ISO 18086:2020
TitleCorrosion of metals and alloys. Determination of AC corrosion. Protection criteria
StatusDefinitive
Publication Date2021-01-08
ReplacesBS EN ISO 18086:2017
Identical National Standard OfISO 18086:2019, EN ISO 18086:2020
DescriptorsCorrosion tests, Corrosion, Non-destructive testing, Pitting corrosion, Defects, Visual inspection (testing), Alloys, Identification methods, Metals, Inspection
ICS77.060 Corrosion of metals
CommitteeGEL/603
ISBN978 0 539 06890 0
PublisherBSI
Pages48

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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