The ageing management has a high relevance for the energy transition in the Seveso industry. Despite the expectation of the new technologies and the reduced reliance on traditional oil sectors, the ageing management is still a crucial issue, this is due to the slow replacement of petroleum-derived products. The use of green alternatives and the reconversion of existing plants point towards the need for early management of ageing in new low carbon technologies. In this context the potential of digital technologies support for a safe extending of equipment lifetime. The challenges posed by emerging digital technologies must be analysed to develop appropriate solutions and improve control activities. This paper explores the use of ontologies in the ageing management of Seveso facilities, particularly in activities with high cognitive content, such as incident analysis, risk assessment, maintenance management, and inspection planning. The aim of the work is to present a revised ontological model for the ageing management and the developed software tool, named OntoAgeingFishbone. This approach has been created for assessing the adequacy of ageing management programs and has been applied to a case study.
