Automating procedures within control systems can serve to make your operators more effective and more consistent. With studies showing more than 40% of all plant incidents stemming from some form of human error, it makes sense to give automation a larger role in day-to-day operations.
There are two main drivers for partial stroking of valves in safety systems: the desire to extend manual test intervals to as long as possible; and to reduce the amount of redundant hardware required for higher safety integrity levels. Like most things in life, it all boils down to one thing: trying to save money.
As economical separation of contaminants from natural gas becomes increasingly important, simulation eases the design of innovative module to remove carbon dioxide. Membranes offer potential advantages over other methods.
Paul J. Rubas and Kevin R. Geurts, ExxonMobil Upstream Research Co.