happened during the project life cycle are:
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Gate Review is commissioned by the sponsoring organisations as part of their
governance structure. It is carried out at the end of the Concept and
definitions phases. It is important as it enables sponsors to decide the
viability of the project and whether it should be completed or terminated (go
or no-go decision). For example, gate review for a deep sewage
tunnelling project to replace sewage pumping stations indicated the extremely
high costs for the construction of the project that are not justified against
the gained benefits, therefore sponsors decided to terminate the project.