... modifications, and repairs are generally required.Because of the need to get the plant on-stream as soon as possible, the proc-ess design, plant design, plant construction and plant ... Figur e 1.1 , shows that detailed plant design starts before completing the process design, construction before completing the plant design, and finally, startup beginsCopyright ... more design data and possibly product for market research.a) Plan development program e) Correlate datab) Design pilot plant f) Revise flow diagramc) Supervise pilot -plant ...