Voices: Plant InSites

Process Equipment: Properly Manage Over-Design

Too much margin can compromise the performance of equipment

By Andrew Sloley, contributing editor
Jan 25, 2019

Data errors and uncertainty undermine the accuracy of design calculations. Additionally, the correlations into which we plug these data have assumptions, simplifications and tolerances. So, to ensure the equipment or plant works, engineers often include an over-design margin. This always adds some cost — and can introduce operating problems as well.

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