Corrosion of metals and alloys. Determination of AC corrosion. Protection criteria

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-01-2021

Publisher

British Standards Institution

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 ISO15589‑1 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 16,7Hz and 60Hz and the evaluation of AC corrosion likelihood.

This document deals with the possibility of AC corrosion of metallic pipelines due to ACinterferences 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., EN50443).

Committee	GEL/603
DocumentType	Standard
Pages	48
PublisherName	British Standards Institution
Status	Current
Supersedes	BS EN ISO 18086:2017