METHOD AND SYSTEM FOR DETECTING ABNORMAL OPERATION IN A STIRRED VESSEL

摘要

A system and method for detecting abnormal situations associated with a stirred vessel in a process plant receives statistical data associated with a pressure within a stirred vessel. A pressure signal associated with the pressure in the vessel is filtered by a digital filter to isolate a frequency component corresponding to pressure changes caused by the movement of a blade of an agitator through a fluid. For example, a pressure sensor device disposed at least partially within the stirred vessel may generate the statistical data based on a pressure signal. The statistical data is analyzed to detect whether one or more abnormal situations associated with an agitator of the stirred vessel exist. For example, the statistical data may be analyzed to detect whether the agitator is broken/unbalanced, corroded, missing a blade or multiple blades, etc. If an abnormal situation is detected, an indicator of the abnormal situation may be generated.