[seren]

I remember an example from another nuclear site cleanup. If you work on a part potentially contaminated you cannot used a normal vacuum cleaner that will disperse some contaminated dust, so you need a special purpose device. Then you cannot dispose easily of the dust, so you need another process. Since the device is also critical you probably need some regular maintenance or tests, so you need someone to manage them.

So basically every single step is much more complex with the associated cost.