Ehdotuksen tiedot

This document describes technical measures to be carried out at crossings and parallelisms of buried metal pipelines influenced by HVDC systems. It provides guidance on how the design, construction, operation, maintenance, and decommissioning phases of HVDC systems affect buried metal pipelines. Electromagnetic, DC interference and thermal influences on pipeline coatings are described. Acceptable levels of interference are discussed. Guidance is provided for calculation methods to establish an acceptable separation distance between the pipeline and the source of interference. The following aspects are not covered in this document: Interference from other AC sources Contractual responsibilities Personnel safety.