In this 42:32 video from the Emerson Exchange Grapevine conference, Momentive Specialty Chemicals' Jan de Rijke discusses how often a DCS Project Manager is faced with a situation after the FEED-study that investment estimates far exceed initial guesstimates.

It is impossible to get final approval, since senior management does not want to spent that amount of money. On the other hand the plants do not want to reduce the scope of the project, they need the functionality. The suppliers have been squeezed and there is nothing to gain there anymore either. The only thing that a DCS Project Manager can do is to organize a Value Engineering Workshop.