What is abnormal operating condition
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I am currently working on a thesis, and I would like to use this opportunity to verify whether my assumptions regarding abnormal operating conditions are correct. In chemical processes, the transition from a normal phase to an accident phase can be divided into a normal phase, a phase that can be controlled by control systems such as DCS, a phase where control systems like DCS determine that it is necessary to activate the emergency shutdown system but the situation can still be brought back to normal through adjustments, a phase requiring an emergency shutdown, and an accident phase. This is my definition; I hope everyone will discuss it. If my definition is incorrect, I hope you can explain why. Thank you!
The abnormal operating conditions mentioned by LZ refer to situations where there are deviations from the control parameters specified in the process operation procedures; whereas operations that are carried out strictly in accordance with the requirements of our process operation procedures can be considered normal operating conditions