Phasing and organisation

As mentioned in Section 10.1, a typical project might be split into the following phases Feasibility 

Definition and Preliminary Design Detailed Design Procurement Construction Commissioning Review 

How should it look How can it be built What will it cost  

The first three phases listed above are sometimes defined collectively as the pre-project stage. This is the stage in which ideas are developed and tested, but before large funding commitments are made. 

In the feasibility phase the project is tested as a concept. Is it technically feasible and is it economically viable There may be a number of ways to perform a particular task (such as develop an oil field) and these have to be judged against economic criteria, availability of resources, and risk. At this stage estimates of cost and income (production) profiles will carry a considerable uncertainty range, but are used to filter out unrealistic options. Several options may remain under consideration at the end of a feasibility study. 

---