Power systems single line diagrams standardizationProposal for a international horizontal standard

Evaluation of reliability, availability and capability of electric supply is left to skill and expertise of single engineers. Standardizations of single line diagrams integrated with predicted immunity of fault common causes, thanks to a faults analysis, could help to save culture of strategic aspects, spread good practice in different industrial disciplines and sectors, constitute a tool to certificate reliability of plants on the basis of shared criteria. A mark out of a possible standard is given.