Non-destructive technologies for the maintenance of underground utilities

Public administrations have to guarantee and improve the utilities performance, while minimizing the financial and environmental costs, by means of methods and tools which optimize the process itself in order to carry out constant improvements within the level of the services delivered as well as of the infrastructure sustainability. In such a context, the development of non-destructive technologies for mapping, diagnosis and rehabilitation of underground infrastructures, assumes a relevant role since the need to operate interventions on existing infrastructures - minimizing at the same times the impact on urban functions and environment - find in these ones a satisfactory answer. In the present contribution, we will describe the main non-destructive diagnosis technologies in order to map a network as well as to develop its diagnostic process.