Purpose The purpose of this study to monitor the state of deep sewerage networks is a task of current interest in connection with the emergency and pre-emergency condition of a large part of sewerage systems in the cities of Ukraine. Design/methodology/approach To monitor the state, performance and reliability of deep sewer collectors, it is necessary to provide monitoring wells and, during the lifetime, to carry out planned inspection of groundwater levels in the wells and to timely identify areas of filtration of wastewater into the ground. Findings Monitoring the state of deep sewerage networks is a task of current interest in connection with the emergency and pre-emergency condition of a large part of sewerage systems in the cities of Ukraine. To monitor the state, performance and reliability of deep sewer collectors, it is necessary to provide monitoring wells, and during the lifetime, to carry out planned inspection of groundwater levels in the wells and to timely identify areas of filtration of wastewater into the ground. Originality/value Implementation of works on reconstruction and strengthening an emergency section will extend the service life of the sewer collector without reducing its capacity.

Other papers in this INPRO session address the possible user requirements for nuclear reactors and fuel cycles that might be applicable in the middle of this century. Each paper has dealt with a certain category of user requirements — safety, proliferation resistance, environmental impacts and material flows, and the broader infrastructure and institutional issues. These user requirements will need to be elaborated in terms of specific criteria applicable to the options and alternatives to be evaluated in different countries. A systematic approach to applying these criteria will also be required. Current technology assessment methods, however, are unlikely to be perfectly suited to the longer-term objective of establishing the directions, which will encourage the innovation we are seeking for the middle of this century. This paper will therefore identify methodological adjustments and extensions appropriate for this longer-term objective and present a possible “top down” approach for creating the necessary methodology.