PERT/CPM diagram construction begins with identification of the time requirements for each activity. Planners then build a chart listing the prerequisite activities for each process.

Although the process of CPM estimation allows managers to break down complex tasks into simpler jobs, the levels to which the process can break down these tasks can make the critical path diagram ...

Critical path diagrams, which have evolved from logic diagrams, can help refiners optimize the timing of FCC start-ups. Those start-ups require that certain steps occur simultaneously ...