Instrumentation Troubleshooting: Do Simple Things Right!

Getting accurate pressure measurements is harder than it might seem.

pressure measurements mn

Occasionally I teach a seminar on troubleshooting. Attendees may include plant engineers or operators. At one such recent event, a participant commented the discussion was too simple and the points made were “just common sense.” I didn’t argue. However, a modified version of the well-known statement of Carl von Clausewitz in “On War” certainly applies: Everything is very simple in troubleshooting, but the simplest thing is difficult. So let’s look at a simple thing — taking pressure measurements — to see how to do it right. Let’s say we’re looking for possible fouling or plugging problems in a heat exchanger train. Troubleshooting here involves using…

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