During the construction phase of a project, it is usual for an independent reviewer to be engaged jointly by the government party and the private party. As discussed in section 10.5, the independent reviewer's role varies between projects - it can be limited to confirming that all commissioning tests have been done and passed, or could be as broad as reviewing all detailed designs for compliance with standards and specifications. If the State-initiated modification occurs during the construction phase, the independent reviewer will still be engaged and the modification should be included in the commissioning tests.
During the service delivery phase, in the event of a State-initiated modification or larger augmentation requiring capital works the need for an independent reviewer should be considered on a case-by-case basis. The value of the capital works, the materiality of the works to the service delivery, and how the works are funded/financed are relevant considerations.