Research needs for on-line pipeline replacement techniques

This paper presents suggested research needs associated with on-line pipeline replacement techniques, such as pipe bursting and pipe splitting. These research needs were compiled prior to, and then debated at, a workshop involving both academia and industry. The aim of the workshop was to assess whether the suggested needs were accurately stated, whether there were additions to make, and most importantly to attach a priority to the research needs. This was achieved by a process of debates and subsequent voting. The areas considered to be most important for research are highlighted in paper. It is concluded that although there has been extensive research into some of the more common types of on-line replacement techniques, for example pipe bursting, there is still a need for further research. The priority research identified from the workshop are in the areas of decision making tools, improved information on safe distances to adjacent utilities and techniques for minimising open excavation when disconnecting and reconnecting laterals.