A common assumption is that everything will need to be disposed of during decommissioning. This is not always the case. There are three main options when dismantling:
In some cases, a platform or topsides can be re-used: either as a production facility or in an alternative way.
Where items cannot be reused, their components can often be recycled. This is one of the most common approaches to waste.
Some materials can’t be reused or recycled. These will need to be disposed of in landfill.