The core disciplines of an industrial control system: the logic solver, the operator interface, the field devices that measure the process, and the panel that ties them together.
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Municipal water and wastewater is where most of this control work lands. Process context first, then the control strategy that serves it.
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Organized by symptom, not by product. Start with what you can observe, work through what to check first, and narrow it down without guessing.
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Reference material for the documents a control system is designed, built, and handed over with.
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Operational technology security for control systems, written for the people who actually maintain them.
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Step-by-step procedures for the tasks that come up on real jobs. Each one is written to be worked through with the equipment in front of you.
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Longer-form technical writing, published as it is finished and revised as field experience corrects it.
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Software Eric Sullivan is building on his own time. These are personal projects, not products of any employer.
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Water & Wastewater
Mixed Liquor Suspended Solids
The concentration of suspended solids in an aeration basin, a primary indicator of the biological population in an activated sludge process.
Trended against RAS and WAS rates, it is how an operator tells whether the process is being pushed or starved.
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