Reference number
ISO 18086:2019
© ISO 2024
International Standard
ISO 18086:2019
Corrosion of metals and alloys — Determination of AC corrosion — Protection criteria
Edition 2
2019-12
Preview
недоступно на русском языке
Опубликовано (Версия 2, 2019)

Тезис

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).

Общая информация

  • Текущий статус
     : Опубликовано
    Дата публикации
     : 2019-12
    Этап
    : Систематический пересмотр международного стандарта [90.20]
  • Версия
     : 2
  • Технический комитет :
    ISO/TC 156
    ICS :
    77.060 
  • RSS обновления

Жизненный цикл

Цели в области устойчивого развития

Данный стандарт разработан для достижения следующих Цель устойчивого развития

9
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