This model breaks the project life cycle into four distinct stages: business planning, pre-project planning, execute project, and operate facility. The project planning phase includes the first two stages with a focus on stage 2 with these four steps:
- Organize for pre-project planning
- Select project alternatives
- Develop a project definition package
- Decide whether to proceed with project
The tasks are represented by the functional boxes in the pre-project planning model that is explained in the research. (SD-94, p.1)