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Why would humans find it impractical to manually control every part of a power plant or oil refinery?
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control system
Essential components of a typical closed-loop control system
It is impractical for humans to manually control every aspect of a power plant or oil refinery because these facilities are large, highly complex, and interconnected systems that require the coordinated operation of numerous individual control devices.1
The sheer scale of these operations makes manual oversight impossible for several reasons:
- Data Volume and Speed: A single process computer in a modern plant may monitor up to 2,000 parametersāsuch as temperature, pressure, and chemical concentrationāwith sampling intervals as short as two seconds. Humans cannot process or integrate this volume of data in real time to maintain optimal performance.2
- Complexity of Control: These facilities often involve hundreds of simultaneous feedback control loops. Computers can manage these loops and apply advanced control algorithms to optimize production far more effectively than human operators.2
- Safety and Response Time: Automated systems can detect unsafe or abnormal conditions and react to potential failures much faster than humans. This capability is essential for preventing accidents and ensuring the stability of the entire system.32
Ultimately, the existence and feasibility of these modern industrial systems depend entirely on automatic control directed by computers.1