The aim for this study was to increase delivery reliability in large machine or structure delivery projects. The subject is still almost completely unstudied. Pragmatically the aim was to collect problems that cause loss of time and resources and therefore decrease of quality, to see if there are good practices or solutions to these projects and to test them in actual projects to see if they actually work and to get some data or evaluations about the saved resources.

It took a much longer time than planned to complete this study, but this was rather a good thing for the project. This way it gave time to gather more experience-based knowledge, to see various practices in various projects, and most of all, gave time to try out the small improvements that make the difference.

The method of having experience-based knowledge and other studies side by side brought depth and a good comparison to this study even though the other studies were not exactly about this topic.

It was rather astonishing to notice that though there are hundreds and thousands studies about JIT (just in time) factory improvements and supply chain management for manufacturing industry, very little interest was given to delivery projects. The interviews revealed that every entity in this branch of business worries about some of these issues every now and then, but nobody had never given it a systematical approach.

Quite remarkable is that the problems and solutions are the same in several different kinds of delivery projects. It is also interesting is that these problems are not usually one-of-a-kind and good practices are at least known, but still unused. Even small changes can make significant savings to project.

The solutions introduced in this study have been proven efficient and that by implementing even some of them in use, a fair amount of resources can be saved. Therefore the study can be considered to be a success. Most of the actions are implemented to practice and thus the results can be considered reliable.

Yet, there are still a great deal of possibilities to continue to study this matter and to go deeper in details as this study is at the general level.