145. Cost/Benefit Analysis is a relatively simple and widely used technique for deciding whether to make a change. As its name suggests, to use the technique simply add up the value of the benefits of a course of action, and subtract the costs associated with it.Costs are either one-off, or may be ongoing. Benefits are most often received over time. We build this effect of time into our analysis by calculating a payback period. This is the time it takes for the benefits of a change to repay its costs Selection and decision-making criteria for a Distributed Control Systems in the process industry - Results Using Filter: Q3 YES, Q7 DCS end user