Superheat and differential pressure interlock design for refinery hydrogenation unit reactors
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Dear sea friends, are the over-temperature and over-pressure interlocks for hydrogenation reactors designed these days? If such interlocks are indeed used, should the temperature sensors and pressure gauges use one from each group or two from each group? Specifically, is it designed with an opening on the thermometer equipped with two transmitters, or something else? Those who are aware of this please join the discussion. It seems that many current designs do not include interlocks, but according to the list of hazardous processes that are to be subject to strict supervision in the initial phase, interlocks are required. I wonder how those working on site or in design firms approach this issue Thank you!
We have one pressure tapping point here; for temperature, it’s a readout of one value, for overpressure it’s a readout of two values. The same principle applies to the other cases where it’s a readout of two values out of three – there is one pressure tapping point, and three gauges in total